| Entries |
| Document | Title | Date |
|---|
| 20080196695 | EVENT-BASED DIRECT INJECTION ENGINE STARTING WITH A VARIABLE NUMBER OF INJECTIONS - A method for starting an internal combustion engine having direct fuel injection into a cylinder, comprising of only for a first combustion event under selected conditions during an engine start, directly injecting fuel to the cylinder at least twice, where each of said two injections at least partially occur during a compression stroke. | 08-21-2008 |
| 20080202473 | METHOD AND APPARATUS FOR RAPIDLY THAWING FROZEN NOX REDUCTANT - According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system. | 08-28-2008 |
| 20080202474 | Control system for general-purpose engine - In a system for controlling a general-purpose internal combustion engine having two cylinders each equipped with a throttle valve and a fuel injector, and a cooling fan that sucks in and blows air onto the cylinders, there are provided a throttle driver that drives the throttle valve of each cylinder to open/close, an injector driver that drives the injector of each cylinder to open and a controller that controls operation of the throttle driver and injector driver in such a way that the throttle opening and an amount of fuel to be injected are different for each cylinder, such that an engine speed becomes constant, thereby enabling to obtain desired output characteristics. | 08-28-2008 |
| 20080276908 | Throttle apparatus having electronic control means built-in - The present invention provides a throttle apparatus having an electronic control means built-in which uses an engine fuel supply system having a carburetor specification and is arranged for constructing a fuel injection system in accordance with an electronic control. | 11-13-2008 |
| 20080302338 | CONTROL METHOD OF A FUEL FEEDING SYSTEM IN A BI-FUEL INTERNAL COMBUSTION ENGINE - A control method of a fuel feeding system in a bi-fuel internal combustion engine; the feeding system presents: a least a first injector adapted to inject a first fuel type; a least a second injector adapted to inject a second fuel type; a common electronic control unit adapted to drive both injectors; and a switching device, which is controlled by the common electronic control unit and is adapted to electrically connect both injectors to the common electronic control unit by means of at least a first relay adapted to connect/disconnect the first injector to/from the common electronic control unit and by means of at least a second relay adapted to connect/disconnect the second injector to/from the common electronic control unit. | 12-11-2008 |
| 20090007888 | Combustion Control System Based On In-Cylinder Condition - Combustion control of a diesel engine is achieved, such that the engine has a monotonic relation between intake manifold pressure and engine torque. For a given engine speed, fuel injection parameters are primarily determined by intake manifold pressure. However, the determination of the fuel injection parameters is also secondarily based on correction factors such as oxygen concentration, intake manifold temperature, and coolant temperature. In effect, the fuel injection parameters reflect the in-cylinder gas mass. | 01-08-2009 |
| 20090025688 | FUEL INJECTION CONTROL APPARATUS - The fuel injection control apparatus includes a function of making a determination of whether learning conditions are satisfied to allow a fuel injection amount learning to be performed, a function of directing a commanded fuel injection amount in the fuel injection amount learning to a fuel injection valve if result of the determination is affirmative, a function of setting an upper limit value of an injection pressure in the fuel injection amount learning, a function of setting a target injection pressure in the fuel injection amount learning, a function of setting the injection pressure to the target injection pressure, a function of detecting an actual fuel injection amount, and a function of correcting an amount of fuel injected by the fuel injection valve on the basis of a difference between the commanded fuel injection amount and the actual fuel injection amount at the target injection pressure. | 01-29-2009 |
| 20090056675 | System and Method to Compensate for Variable Fuel Injector Characterization in a Direct Injection System - A method for controlling fuel injection timing of at least one fuel injector in a direct injection fuel delivery system of an internal combustion engine during a mode of engine operation where a plurality of fuel injection events are performed by the at least one fuel injector during a cylinder event is provide. The method includes, during a first fuel injector needle bounce condition following the end of injection of a first fuel injection event, sending a start of injection signal for a second fuel injection event at a first time, and during a second fuel injector needle bounce condition following the end of injection of the first fuel injection that differs from the first fuel injector needle bounce condition, sending the start of injection signal for the second fuel injection event at a second time that is earlier than the first time. | 03-05-2009 |
| 20090056676 | FUEL INJECTION DEVICE AND FUEL INJECTION SYSTEM - A fuel injection device includes a fuel injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel. A pressure sensor is located in a fuel passage, which extends from the pressure-accumulation vessel to a nozzle hole, and configured to detect pressure of the fuel. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel. A storage unit stores individual difference information, which indicates an injection characteristic of the fuel injection valve, the injection characteristic being obtained by an examination. The individual difference information is related to a fluctuation pattern of a portion of the fluctuation in detected pressure waveform of the pressure sensor. The fluctuation is attributed to one fuel injection through the nozzle hole. The portion of the fluctuation is subsequent to an end of the fuel injection. | 03-05-2009 |
| 20090241909 | Shot mode transition method for fuel injection system - A fuel injection system for a combustion engine is disclosed. The fuel injection system may have a fuel injector configured to inject fuel in one of a first shot mode and a second shot mode. Additionally, the fuel injection system may have a sensor configured to sense a parameter indicative of a desired rate of change of a supplied fuel quantity and generate a corresponding signal. The fuel injection system may also have a controller in communication with the fuel injector and the sensor. The controller may be configured to operate the fuel injector in one of the first shot mode and the second shot mode during an injection event, based on a count and the signal. | 10-01-2009 |
| 20100024776 | PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector. | 02-04-2010 |
| 20100059021 | FUEL INJECTION SYSTEM AND METHOD FOR ASCERTAINING A NEEDLE STROKE STOP IN A FUEL INJECTOR - In fuel injection system having at least one fuel injector and a control unit for triggering the injector, each injector has a piezoelectric actuator, a nozzle element having at least one nozzle opening and at least one movable nozzle needle for selectively closing and opening the at least one nozzle opening, a hydraulic coupling element, which is connected between the piezoelectric actuator and the nozzle needle, and at least one stroke stop, against which the nozzle needle rests in its completely open and/or completely closed position. To be better able to ascertain when the stroke stop is reached in such injectors, the needle stroke stop is ascertained during an energization pause of the piezoelectric actuator by analyzing a voltage signal applied to the piezoelectric actuator. Oscillations of the voltage signal during the energization pause are preferably analyzed. To this end, regression lines are drawn through the voltage characteristic, a correlation coefficient of the regression lines to the voltage characteristic is ascertained and a needle stroke stop is detected on the basis of the correlation coefficient. | 03-11-2010 |
| 20100059022 | Method, Device, and System for Operating an Internal Combustion Engine - A device and a method for operating an internal combustion engine having at least one cylinder and a tank ventilation system with a line designed to provide pneumatic communication between the tank ventilation system and the at least one cylinder. The line has at least one sensor for determining a hydrocarbon content of a gas flow. A determination, as a function of a measurement signal from the sensor, of a hydrocarbon content of a gas flow flowing from the tank ventilation system to the at least one cylinder is performed. At least one characteristic variable for a fuel quantity to be metered is determined as a function of the determined hydrocarbon content. A metering of fuel into the cylinder is determined as a function of the at least one determined characteristic variable. | 03-11-2010 |
| 20100095936 | METHOD AND CONTROL DEVICE FOR CONTROLLING A FUEL INJECTOR - A method for controlling a fuel injector, having a piezoelectric actuator, for an internal combustion engine. The method includes a step of controlling the actuator using an actuator current signal for a fuel injection, an actual actuator voltage being ascertained during the fuel injection. After a comparison of whether the actual actuator voltage is greater than an actuator voltage threshold value, if the actual actuator voltage is greater than the actuator voltage threshold value, the actuator current signal is controlled for an additional fuel injection, in such a way that the actual actuator voltage approaches a setpoint actuator voltage, during the additional fuel injection. Also a computer program product for carrying out the method, and a control device for controlling a piezoelectric actuator of a fuel injector for an internal combustion engine are also provided. | 04-22-2010 |
| 20100162999 | Method and device for controlling an internal combustion engine - A device and a method for controlling an internal combustion engine are provided, in which the fuel quantity to be injected is controlled as a function of a Lambda signal. A setpoint value for the Lambda signal is specified on the basis of at least one maximally permitted exhaust-gas temperature value. | 07-01-2010 |
| 20100163000 | APPARATUS AND METHOD FOR CONTROLLING A FUEL INJECTOR UNDER ABNORMAL CONDITIONS - A control device ( | 07-01-2010 |
| 20100170478 | DETERMINING AND CORRECTING THE PHASING OF THE ANGULAR POSITION OF A FOUR-STROKE INTERNAL COMBUSTION ENGINE WITH INDIRECT INJECTION AND TIME-CONTROLLED SEQUENTIAL REINJECTION/SEQUENTIAL INJECTION CUTOFF - A method for determining the phasing of the angular position of a four-stroke internal combustion engine with indirect injection and time-controlled sequential reinjection/sequential injection cutoff, characterized in that it includes, with the engine running, the following steps:
| 07-08-2010 |
| 20100192914 | METHOD AND DEVICE FOR OPERATING AN INJECTION VALVE - In a method and a device for operating an injection valve, a relevant time (t_ACT) is determined during a catch phase (PH_CATCH) when the electromagnetic actuator reaches a predetermined fraction value of the electric current, which value is smaller than a maximum current value, and a fraction of interval (T_FRAC) since the start of the respective catch phase (PH_CATCH) is determined depending thereon and the injection valve is diagnosed depending on the fraction of interval (T_FRAC) and the predetermined minimum and maximum threshold interval values (THD_T_MIN, THD_T_MAX). | 08-05-2010 |
| 20100252003 | INJECTOR - An injector has a body that defines a high-pressure passage for passing high-pressure fuel to an injection hole inside, a needle that is accommodated in the body and that opens and closes the injection hole, an electric actuator that causes the needle to perform the opening and closing action, a lead wire that is arranged in a lead wire insertion hole formed in the body and that supplies an electric power to the electric actuator, and a fuel pressure sensor that is fixed to the body and that senses pressure of the high-pressure fuel. An outlet hole, via which the lead wire extends from the lead wire insertion hole to an outside of the body, is located at a position closer to the injection hole than the fuel pressure sensor is. | 10-07-2010 |
| 20100258088 | SPEED AND POSITION SENSING DEVICE FOR EMD TWO-CYCLE DIESEL ENGINES - A device is disclosed for sensing the speed of an EMD 567/645/710 two-cycle diesel engine having a crankcase, electronic fuel injectors and an electronic control system for controlling the electronic fuel injectors. The device includes a spline shaft sized for insertion into the crankcase of the engine so that the spline shaft rotates with the engine, a gear operably secured to the spline shaft to rotate with the spline shaft and sized to rotate with the engine in a 1:1 ratio, and at least one electronic sensor located adjacent the gear to sense rotation of the gear. The at least one electronic sensor is connectable to the electronic control system to provide electronic signals to the electronic control system for determining when to inject fuel with the electronic fuel injectors. Also disclosed is a method for retrofitting the engine and a kit for retrofitting the engine. | 10-14-2010 |
| 20100263633 | FUEL INJECTION VALVE AND FUEL INJECTION APPARATUS - The injector body | 10-21-2010 |
| 20100275885 | Method for Determining an Opening Voltage of a Piezoelectric Injector - A method for determining an opening voltage of an injector having a piezo actuator, in particular an injector of an internal combustion engine, in which an output voltage is applied at the piezo actuator in the closed state of the injector, and the voltage is lowered by energizing the piezo actuator so as to open the injector. The energy supply is interrupted at a holding voltage and the voltage change present at the piezo actuator is then measured over the time, the reaching of the opening voltage being inferred in the case of a voltage rise. | 11-04-2010 |
| 20100288236 | DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING SAME - In a direct injection spark ignition internal combustion engine that performs an Atkinson cycle operation in which the time to close intake valves is retarded, the tumble flow in the engine cylinder is intensified by fuel injected from a fuel injection valve during a time period from an intake stroke bottom dead center to closing of the intake valves. | 11-18-2010 |
| 20100307456 | METHOD AND CONTROL UNIT FOR ELECTRIC CONTROL OF AN ACTUATOR OF AN INJECTION VALVE - A method for the electric control of an actuator of an injection valve in an injection facility for an internal combustion engine has the following steps: specifying a target value for a controlled variable (E) of the actuator, pilot controlling the controlled variable (E) according to a pilot control characteristic that is specified by an axis section (OffsCal, Offs-Real) and a characteristic gradient, wherein as part of the pilot control corresponding to the specified target value according to the pilot control characteristic a control variable for the electric control of the actuator is determined, and readjustment of the pilot control characteristic, wherein a control deviation (ΔE) is ascertained as part of the readjustment and the pilot control characteristic is adapted as a function of the control deviation (ΔE). It is proposed that as part of the readjustment the axis section of the pilot control characteristic is set. | 12-09-2010 |
| 20100307457 | FUEL INJECTION CONTROLLER - A fuel injection controller includes an ECU controlling an operation of a fuel injector based on a characteristic data of the fuel injector, an EEPROM provided to the injector, and an EEPROM provided to the ECU. Identification information by which the fuel injector is individually identified is stored in both of the EEPROMs. It is determined whether the identification information stored in the injector-side EEPROM is identical to the identification information stored in the ECU-side EEPROM. Based on this determination result, it can be determined whether the injector and/or the ECU are exchanged to new one. | 12-09-2010 |
| 20110000465 | METHOD AND DEVICE FOR CONTROLLING AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A method for controlling an injection system of an internal combustion engine, a fuel injection being performed using at least one piezoelectric actuator which acts directly or transmittedly on a nozzle needle of an injector, and an activation voltage determining the actuator operation being corrected as a function of a pressure wave influence of the fuel injection, provides that the pressure waves applied to the nozzle needle and caused by an injection are ascertained by measuring the actuator voltage during an injection break and the actuator voltage of a following injection is modulated in accordance with the pressure waves on the nozzle needle. | 01-06-2011 |
| 20110000466 | Multi-Layer Piezoelectric Element, Method for Manufacturing The Same, Injection Apparatus and Fuel Injection System - A multi-layer piezoelectric element that has high durability with capability to operable continuously under higher voltage and higher pressure over a long period of time, a method for manufacturing the same, an injection apparatus and a fuel injection system are provided. | 01-06-2011 |
| 20110005495 | PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate) the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector. | 01-13-2011 |
| 20110079199 | METHOD FOR DETECTING DEVIATIONS OF INJECTION QUANTITIES AND FOR CORRECTING THE INJECTION QUANTITY, AND INJECTION SYSTEM - A method provides for detecting deviations of injection quantities for injections into internal combustion engines, as carried out for example by common-rail systems. At least one deviation of at least one injection quantity is detected by determining at least one deviation, from a predefined value in each case, of at least one value of at least one variable controlling an actuator of the injector and/or indicating at least one state of the actuator. | 04-07-2011 |
| 20110100330 | FUEL INJECTION CONTROL APPARATUS - A fuel injection control apparatus for controlling a fuel injection valve including an arithmetic processing section that determines whether a necessary fuel amount is injectable or not within a fuel injectable range from a first fuel injection start timing, computes a second fuel injection start timing in which the necessary fuel amount is injectable within the fuel injectable range in the case that it is not injectable, and controls the fuel injection valve at the computed second fuel injection start timing so as to start fuel injection. | 05-05-2011 |
| 20110100331 | FUEL INJECTION CONTROLLING SYSTEM OF INTERNAL COMBUSTION ENGINE - A fuel injection controlling system includes an accelerator manipulator. An accelerator manipulated variable detection sensor is configured to detect a manipulated variable of the accelerator manipulator. A rotation speed sensor is configured to detect a rotation speed of an engine. A throttle valve drive motor is configured to open and close the throttle valve in response to the manipulated variable. A controller is configured to control the throttle valve drive motor and to compute basic injection time (Ti) of fuel. A memory is configured to memorize, as a carbon adhesion judgment value (IXREF), a throttle opening degree (θTH) at a moment when a rotation speed (Ne) detected with the rotation speed sensor reaches a target idle rotation speed (NeIdle) by increasing the throttle opening degree (θTH). A corrector is configured to correct Ti with IXREF to correct an air-fuel ratio toward a leaner side as IXREF increases. | 05-05-2011 |
| 20110120420 | Method for determining a characteristics map of the injection quantity via an electric variable of an electrically triggered fuel injector - A method for determining a characteristics map of the injection quantity (Q) via an electric variable (U | 05-26-2011 |
| 20110132330 | System and Method for Injecting Fuel to a Gaseous Fueled Engine - A method for controlling injection timing for a gaseous fuel injector is described. In one example, the fuel injector is opened with a saturating fuel injector at a predetermined crankshaft angular position. In one embodiment, the predetermined crankshaft angular position corresponds to at least one crankshaft angular position where battery voltage increases during engine cranking. | 06-09-2011 |
| 20110132331 | VACUUM SUPPLY SYSTEM - A method of operating a boosted engine system is described in which an ejector coupled with a fuel vapor purging system can generate vacuum during both purging and non-purging conditions, and during both boosted and non-boosted conditions. The vacuum can therefore be used to power vacuum actuated brakes, and/or other vacuum actuators, irrespective of the purging conditions, and irrespective of boost levels. | 06-09-2011 |
| 20110139124 | Method for operating at least one injector of an internal combustion engine - A method for operating at least one injector of an internal combustion engine, in which a voltage applied to the injector is varied, and a rotational speed pattern of the internal combustion engine is ascertained as a function of the voltage, a setpoint voltage, suitable for operating the at least one injector, corresponding to that varied applied voltage for which a peak arises in a spectrum of the rotational speed pattern. | 06-16-2011 |
| 20110155105 | Control Unit of Fuel Injector - An injection control unit of a fuel is provided, which prevents generation of a nozzle deposit of a fuel injector. In a control unit of a fuel injector capable of controlling a lift height that is a distance between a valve body and a valve seat, after start of fuel injection and before end of the fuel injection, after the lift height is controlled to a first height, a period in which the lift height is controlled to a second height which is lower than the first height is provided for a predetermined period. According to such a configuration, when the lift height of the valve body is lowered to the second height after the fuel is injected at the first height, a fuel velocity in the vicinity of an inner wall of an injection port is increased due to an inertial force of the fuel and reduction in an opening area. By a fuel flow at a high velocity, a contamination substance adhering to a wall surface is washed away. | 06-30-2011 |
| 20110180040 | SWITCH-MODE SYNTHETIC POWER INDUCTOR - A fuel delivery system for a vehicle includes a fuel injector that meters fuel flow and provides for pre-heating fuel to aid combustion. A control circuit including a synthetic inductor drives a heated element within the fuel flow. | 07-28-2011 |
| 20110180041 | GENSET ENGINE USING AN ELECTRONIC FUEL INJECTION SYSTEM INTEGRATING AN ALCOHOL SENSOR - An open or closed loop EFI system integrating an alcohol sensor is provided on a genset engine. The EFI system provides acceptable engine performance and efficiency when using fuels or fuel blends over a wide band and when starting from a cold state, i.e., starting the engine after the engine has not run for a relatively long period of time. The alcohol sensor enables acceptable operation while the genset engine is cold. The alcohol sensor sends data to the electronic control unit (ECU) and this data, as well as data provided by other sensors that may be available such as an air flow sensor, is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the fuel injector which sends the correct amount of atomized fuel to mix with the air flow to be combusted. The fuel mixture, at the requested AFR, enables the engine to start and operate efficiently from a cold state even if the fuel blend has been changed from a previous operation of the engine. | 07-28-2011 |
| 20110180042 | GENSET THAT USES AN OPEN LOOP ELECTRONIC FUEL INJECTION SYSTEM AND OPERATES ON GASEOUS FUELS - A genset engine that operates on an open loop EFI system and runs on gaseous fuels is described. The integration of various air sensors, including for example a manifold air temperature (MAT) sensor, a manifold absolute pressure (MAP) sensor, or an air flow sensor(s), can provide optimal engine performance when using gaseous fuels and when starting from a cold state. The sensors employed send data to the electronic control unit (ECU) and such data is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the injector and the injector sends the requested amount of gaseous fuel to mix with the air flow to be combusted. This provides the engine with a gaseous fuel and air mixture that is at the requested relative AFR and the engine is able to start and meet performance. | 07-28-2011 |
| 20110180043 | GENSET ENGINE WITH AN ELECTRONIC FUEL INJECTION SYSTEM INTEGRATING ELECTRICAL SENSING AND CRANK POSITION SENSING - An open or closed loop EFI system, integrated on a genset engine or any internal combustion engine, with an electrical sensor and crank position sensor is described. Since a genset engine's exhaust emissions and general performance are a function of spark timing, integration of electrical and crank position sensors on a genset engine provides optimal engine performance and efficiency when the electrical draws fluctuate. The electrical sensor and crank position sensor send data to the electronic control unit (ECU), and this data is used to determine the optimal air-to-fuel ratio (AFR) and optimal spark timing. The ECU varies the spark timing in accordance with the speed and load of the engine and actuates the fuel injector to send the correct amount of atomized fuel to mix with the air flow to be combusted allowing the engine to meet performance. | 07-28-2011 |
| 20110180044 | METHOD AND DEVICE FOR CORRECTING A TEMPERATURE-DEPENDENT LENGTH CHANGE OF AN ACTUATOR UNIT DISPOSED IN THE HOUSING OF A FUEL INJECTOR - A method and a device correct a temperature-dependent length change of an actuator unit ( | 07-28-2011 |
| 20110203553 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device which can reduce an exhaust amount of unburned HC at a time of start of an internal combustion engine using a fuel containing alcohol is provided. The control device controls closing timing of an exhaust valve and opening timing of an intake valve so as to close the exhaust valve at a timing at an advance side from an intake top dead center and enlarge a minus overlap until the intake valve is opened after the exhaust valve is closed in accordance with the alcohol concentration of the fuel, for a predetermined time period (hereinafter, a first predetermined time period) at a time of start. The control device controls fuel injection timing so as to start fuel injection in the minus overlap for a second predetermined time period at the time of start which is included in the first predetermined time period. | 08-25-2011 |
| 20110283975 | CIRCUIT ARRANGEMENT FOR CONTROLLING AN INJECTION VALVE - A circuit arrangement controls at least one injection valve, in particular a solenoid injection valve, for an internal combustion engine. The circuit includes a supply potential connection, a reference potential connection; one or more solenoids; a controllable voltage boosting circuit for generating from the first voltage a second voltage that is higher than the first voltage. The voltage boosting circuit is connected at a first input to the supply potential connection and at a first output to the solenoids by means of a respective first controllable semiconductor switching element. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. The control circuit applies the first or the second voltage to the first coil connection of exactly one solenoid depending on an actuation state of one of the injection valves. | 11-24-2011 |
| 20110308498 | Method and control device for operating an internal combustion engine - In a method for controlling operation of an internal combustion engine using a control device, a setpoint value of a first fuel injection quantity is specified for a first combustion cycle, and the first fuel injection quantity is injected. A combustion pressure is ascertained during the first combustion cycle, and in a further step, a setpoint value of a second fuel injection quantity is ascertained for a second combustion cycle based on the combustion pressure. | 12-22-2011 |
| 20110308499 | METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE - Each cylinder bank of the internal combustion engine is assigned in each case one injection event memory (EES), an injection determining process (EEP) and an injection execution process (EAP). In the respective injection determining process (EEP), desired injection events (EE) are determined for the associated cylinder bank. These injection events are stored in succession in the respectively associated injection event memory (EES). In the respective injection execution process (EAP), injection events (EE) are retrieved in succession from the associated injection event memory (EES) and executed in a sequence in which they were stored in the associated injection event memory (EES) by the associated injection determining process (EEP) (FIFO: first in first out). The in each case next injection event (EE) is executed only after the end of an execution of the in each case previously executed injection event (EE). | 12-22-2011 |
| 20110315123 | PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector. | 12-29-2011 |
| 20120055449 | HYSTERESIS-TYPE ELECTRONIC CONTROLLING DEVICE FOR FUEL INJECTORS AND ASSOCIATED METHOD - A hysteresis-type electronic controlling device is provided for fuel injectors that includes, but is not limited to a power driving unit for driving the fuel injectors with an electric signal, a control stage connected to the power driving unit and a sensing stage fed by the power driving unit and feeding the control stage, the device has a feedback frequency control stage for measuring a waveform period of the signal feeding the fuel injectors; the feedback frequency control stage is fed by the control stage with an electric signal. A fuel injector control method is also provided that includes, but is not limited to driving fuel injectors with an electric signal coming from a power driving unit fed by a control stage , sensing the signal with a sensing stage, and measuring a waveform period of the signal through the feedback frequency control stage. | 03-08-2012 |
| 20120125295 | ENGINE CONTROLLER - An ECU detects a shaft torque in a specified torque detection range defined for each cylinder. The shaft torque is generated due to a combustion of the fuel and is applied to a crankshaft of the engine. The ECU computes a crank angle position as an actual peak position at which a combustion torque is peak. The ECU stores a previously determined maximum torque position which corresponds to a crank angle position at which a combustion torque becomes peak. Based on the actual peak position and the previously stored maximum torque position, an igniter controls an ignition timing. | 05-24-2012 |
| 20120125296 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A control apparatus for an internal combustion engine includes a booster, a first controller, and a second controller. The booster is configured to increase an output voltage of a battery to a drive voltage of a fuel injection unit of the internal combustion engine. The first controller has a first initialization time after boot of the first controller. The first controller is configured to control the booster to increase the output voltage to the drive voltage at start-up of the internal combustion engine. The second controller has a second initialization time after boot of the second controller. The second initialization time is longer than the first initialization time of the first controller. The second controller is configured to control the booster to increase the output voltage to the drive voltage after the start-up of the internal combustion engine is completed. | 05-24-2012 |
| 20120152207 | METHOD FOR OPERATING A FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE, AND CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE - In a method for operating a fuel injector, a transition range of the characteristics curve of the injector is detected individually and adapted continuously, so that a monotonous characteristics curve is formed, with whose aid high metering precision of the injector is achieved. | 06-21-2012 |
| 20120180763 | MULTIPLE FUEL INJECTION SYSTEMS AND METHODS - A desired pulse width module determines a desired length of a single pulse of fuel for a combustion cycle of a cylinder of an engine. A multiple pulses module determines a number of pulses (N) for the combustion cycle, wherein N is an integer greater than 1. A fraction determination module determines N fractional values for the N pulses, respectively. An injector control module generates individual lengths for the N pulses based on the N fractional values, respectively, and based on the desired length. A fuel actuator module opens a fuel injector that injects fuel into the cylinder during the combustion cycle in N pulses having the individual lengths, respectively. | 07-19-2012 |
| 20120234298 | CLASSIFICATION METHOD FOR AN INJECTOR, CALIBRATION METHOD FOR A CHARACTERISTIC MAP OF AN INJECTOR, AND TEST BENCH DEVICE FOR AN INJECTOR - A classification method for an injector may include: actuating the injector by means of a predefinable test control signal, detecting a quantity of liquid dispensed by the injector on the basis of the test control signal, classifying the injector as a function of the detected dispensed quantity of liquid, and determining a required control signal on the basis of the classification of the injector considering a reduced injector stroke. A calibration method for a characteristic map of an injector, and a test bench device for performing the injector classification method are also provided. | 09-20-2012 |
| 20120255523 | DUAL FUEL INJECTOR AND ENGINE USING SAME - A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature, a second coil and a lever. The dual solenoid actuator has a non-injection configuration at which the first armature is in an un-energized position, the second armature is at un-energized position and the lever is at a first angular orientation. A dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position, the second armature is at the un-energized position and the lever is at the first angular orientation. The dual solenoid actuator has a second fuel injection configuration at which the second fuel inlet is fluidly connected to the second set of nozzle outlets, the first armature is at the un-energized position, the second armature is at an energized position and the lever is at a second angular orientation. The dual solenoid actuator may also include a combined fuel injection configuration. | 10-11-2012 |
| 20120266846 | Dual fuel diesel engine system - A dual fuel system and method for an engine including a liquid fuel supply subsystem for supplying liquid fuel to the engine and an electronic control module configured to control, via one or more liquid fuel control signals, the amount of liquid fuel supplied to the engine based on one or more sensor signals. A gaseous fuel supply subsystem is configured to supply gaseous fuel to the engine and an electronic controller subsystem responsive to liquid fuel control signal(s) is configured to determine, based on the liquid fuel control signals, a modified amount of liquid fuel and an amount of gaseous fuel to be supplied to the engine for dual fuel operation. | 10-25-2012 |
| 20120266847 | Method and System for Pre-Ignition Control - Methods and systems are provided for addressing cylinder pre-ignition by adjusting a spray angle of fuel injected into a cylinder responsive to an indication of pre-ignition. A spray pattern of fuel injected in the cylinder is varied based on a cylinder pre-ignition count to reduce cylinder wall impingement of injected fuel while improving air-fuel mixing in the cylinder. | 10-25-2012 |
| 20130000606 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel injection control system for an internal combustion engine is provided which is designed to perform pilot injection of fuel into the engine through a fuel injector prior to main injection. The system monitors a combustion state parameter representing a combustion state of the fuel within a combustion chamber of the engine which has been sprayed in the event of the pilot injection. When the combustion state parameter is determined as lying out of a stable combustion range where the fuel is to burn stably, the system changes the number of pilot injections to be executed prior to the main injection and/or the quantity of the fuel to be sprayed in each pilot injection, thereby enhancing the ignitability of the fuel in the pilot injection. | 01-03-2013 |
| 20130019842 | FLOW RATE ESTIMATION FOR PIEZO-ELECTRIC FUEL INJECTION - Improving tradeoffs between noise, fuel consumption, and emissions in future diesel engines are facilitated by the development of increasingly flexible fuel injection systems which can deliver more complex injection profiles. Piezoelectric injectors have the ability to deliver multiple, tightly spaced injections in each cycle. Closed-loop control is useful for this technology, and is assisted by on-line estimation of the injected fuel flow rate to be realized. Estimator results are compared against both open-loop simulation and experimental data for a variety of profiles at different rail pressures, and show improvement, particularly for more complex multi-pulse profiles. Internal states of the estimator are used to evaluate pulse-to-pulse interaction phenomena. Some embodiments include the use of estimations of actual transient fuel pulses, and the use of such estimations to achieve closed-loop control of the quantity of fuel injected in a pulse, and the dwell time between adjacent fuel pulses. | 01-24-2013 |
| 20130074809 | DEVICE AND METHOD FOR CONTROLLING START OF COMPRESSION SELF-IGNITION ENGINE - A start control device includes a compression self-ignition engine, fuel injection valve, piston stop position detector, starter motor, and controller for stopping the engine when an automatic stop condition is satisfied, and thereafter, when a restart condition is satisfied and a compression-stroke-in-stop cylinder piston stop position is within a stop position range on a bottom dead center side, restarting the engine by injecting fuel into the compression-stroke-in-stop cylinder while applying torque to the engine. In restarting the engine, when the restart condition is not based on driver request, when the compression-stroke-in-stop cylinder piston stop position is within the stop position range, the controller restarts the engine, injecting fuel into an intake-stroke-in-stop cylinder on an intake stroke, when the cylinder reaches the compression stroke. When the restart condition is based on driver request, the controller restarts the engine, injecting fuel into the compression-stroke-in-stop cylinder. | 03-28-2013 |
| 20130098336 | METHOD AND SYSTEM FOR PRE-IGNITION CONTROL - Methods are provided for controlling an engine in response to a pre-ignition event. A pre-ignition threshold and a pre-ignition mitigating action are adjusted based on a rate of change of cylinder aircharge. As a result, pre-ignition events occurring during transient engine operating conditions are detected and addressed different from pre-ignition events occurring during steady-state engine operating conditions. | 04-25-2013 |
| 20130112172 | Fuel Injection Control Device for Internal Combustion Engine - Disclosed is an fuel injection control device for an internal combustion engine, including a high-voltage generating circuit for generating a high voltage exceeding a battery voltage, which is a voltage for driving an injector, the battery voltage and high voltage being used to supply a hold current Ih, as well as a valve-opening current Ip as a driving current, to the injector, the control device allowing a fuel injection pulse signal to be output to one cylinder in a plurality of fuel injection timings during one combustion cycle, wherein, after the high voltage is consumed by driving the injector and decreases, a time required for the high-voltage generating circuit to restore high voltage to a predetermined value is calculated, and wherein, when driving control for any other injector is demanded during restoration time, injection is controlled by correcting at least one of fuel injection timing and fuel injection pulse width. | 05-09-2013 |
| 20130133624 | TWO-CYCLE ENGINE - Disclosed herein is a two-cycle engine that includes an exhaust port which is opened and closed at one end portion in a longitudinal direction of a cylinder; a scavenging port which is opened and closed at the other end portion in the longitudinal direction of the cylinder; and a fuel injection port which injects a fuel into the cylinder provided between the exhaust port and the scavenging port, wherein the fuel begins to be injected in a state in which at least any one of the exhaust port and the scavenging port is opened. | 05-30-2013 |
| 20130139791 | DRIVE UNIT OF FUEL INJECTION DEVICE - In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source. | 06-06-2013 |
| 20130167808 | FUEL-INJECTION SYSTEM FOR AN INTERNAL-COMBUSTION ENGINE - A fuel-injection system for an internal-combustion engine has at least one fuel injector with a fuel-metering servo valve provided with an open/close element, which is movable in response to the action of an electric actuator; and an electronic control unit which issues to the electric actuator two electrical commands, one for carrying out a pilot injection and one for carrying out a main injection; the two electrical commands being separated by an electrical dwell time such that the main injection starts, without solution of continuity with the pilot injection, when an open/close needle for carrying out fuel injections into a cylinder of the internal-combustion engine remains at a lift value in which the fuel flow rate is negligible; in particular, the second electrical command is issued during a rebound of the open/close element on the valve seat. | 07-04-2013 |
| 20130167809 | METHOD AND DEVICE FOR OPERATING A FUEL INJECTION SYSTEM - In a method for operating a fuel injection system for an internal combustion engine of a motor vehicle, an output signal of a pressure sensor which characterizes a fuel pressure in a pressure accumulator is evaluated. An undesirably high fuel pressure in the pressure accumulator and/or a fault in the fuel injection system is/are inferred at the time when the output signal assumes a maximally possible value for at least a predefinable monitoring period. | 07-04-2013 |
| 20130192566 | CONTROL SYSTEM HAVING CONFIGURABLE AUXILIARY POWER MODULE - A control system is disclosed for use with an engine. The control system may have a power source and a main control module configured to receive power from the power source and direct control signals to at least one component of the engine. The control system may also have an auxiliary power module that is selectively connectable to the main control module and to the power source. The auxiliary power module may be configured to receive power from the power source and direct control signals through the main control module to the at least one component of the engine. | 08-01-2013 |
| 20130206111 | Method and Device for Operating a High-Pressure Accumulator Fuel Injection System for an Internal Combustion Engine - A method is disclosed for operating a high-pressure accumulator fuel injection system for an internal combustion engine of a motor vehicle which has a stop-start automatic function by way of which the internal combustion engine can be switched off and restarted afterwards independent of the intervention of the driver of the motor vehicle, the fuel being conveyed to the high-pressure accumulator as needed by means of a high-pressure pump and the pressure of the fuel being adjusted on the pressure side by means of a pressure control valve which is electrically actuated and open when de- energized. According to the method, the supply with power of the pressure control valve is adapted to the prevailing pressure in the high-pressure accumulator during a stop phase within a stop-start cycle. | 08-15-2013 |
| 20130213362 | FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - The fuel injection apparatus includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio of an internal combustion engine is a control target air-fuel ratio based on an alcohol concentration of the blended fuel to be supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined low fuel pressure when a request is issued for desorbing alcohol adsorbed on the adsorbent. | 08-22-2013 |
| 20130220278 | FUEL GAS SUPPLY METHOD AND SUPPLY UNIT FOR GAS ENGINE - In an gas engine provided with a gas supply pipe | 08-29-2013 |
| 20130233281 | CONTROL DEVICE OF DIESEL ENGINE WITH TURBOCHARGER - A control device of a diesel engine is provided. The diesel engine includes an injector for injecting fuel into a cylinder, and a turbocharger for compressing intake air by using exhaust energy. The control device includes a calculating module for setting a basic injection timing determined according to an operating state of the engine, as a timing of injecting the fuel from the injector, and an injection control module for injecting the fuel from the injector at the set basic injection timing at least while the engine is in a steady operation. | 09-12-2013 |
| 20130233282 | METHOD FOR OPERATING AN INJECTION SYSTEM - In a method for operating an injection system for a combustion engine, in an operating situation in which fuel is not requested by combustion engine, a valve is operated during at least one time interval in such a way that no fuel injection takes place, a valve element being moved in relation to at least one valve body by operating the valve. | 09-12-2013 |
| 20130239929 | Method for Actuating a Piezo Injector of a Fuel Injection System - A method for actuating a piezoelectric actuator and a piezo injector of a fuel injection system having a nozzle needle which can be moved between the closed position and an open position by the piezoelectric actuator are disclosed. Current is applied to the piezoelectric actuator from a source for the duration of a charging time as a function of a required quantity of fuel, in order to move the nozzle needle into its opened position for a time period which is dependent on the required quantity of fuel. The charging time is selected according to the following relationships: t | 09-19-2013 |
| 20130255640 | Fuel Injection Valve and Fuel Injection System - A fuel injection valve which has: swirl chambers each having an inner wall whose curvature is gradually increased from upstream to downstream along fuel flow; passages for swirling motion, the passages permitting introduction of fuel into the swirl chambers; fuel injection holes opening into the swirl chambers and including at least two narrow-angle injection holes and a wide-angle injection hole from which at least two narrow-angle sprays and a wide-angle spray are respectively ejected; and an orifice plate provided with the injection holes. The narrow-angle injection holes are spaced a given distance from the center of the orifice plate. The wide-angle injection hole is formed on a line perpendicularly intersecting a line segment that interconnects the centers of the narrow-angle injection holes. | 10-03-2013 |
| 20130298875 | METHOD FOR OPERATING A MOTOR VEHICLE - A method for operating a motor vehicle having a hybrid drive which includes an internal combustion engine having an injection system and an electric motor, in which in an operating situation, in which the motor vehicle is driven by the electric motor and the internal combustion engine is turned off, a level of the fuel pressure in the injection system is increased by the electric motor to prepare a start of the internal combustion engine. | 11-14-2013 |
| 20130298876 | HEAVY DUTY PRESSURE INJECTION TIME PRESSURE FUEL INJECTION SYSTEM - A fuel injection system that includes an electronic controller that senses engine speed, calculates energy required by an engine existing control unit based upon a signal sent to one or more diesel injection pressure and timing actuators and a plurality of gaseous fuel injectors that respond to commands from the electronic controller and inject gaseous fuel through an injection tube installed in an intake adapter plate fixed between an intake manifold and an engine block. The fuel injection system also includes an on and off switch assembly equipped with a self-diagnostic capability that lights an LED light when a fault in the port injector system is sensed and a blended fuel injector control unit installed between an ECM and a plurality of diesel fuel injectors. | 11-14-2013 |
| 20130298877 | ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE - An electronically controlled fuel injection valve can independently control the time to inject fuel and the amount of fuel to be injected in response to a control signal sent from the operating condition of an engine unlike a traditional mechanical fuel injection valve, and employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection. The electronically controlled fuel injection valve prevents a nozzle part from being constantly subjected to high pressure due to the nozzle part being not supplied with fuel when fuel is not injected, prevents a large amount of fuel from leaking into a combustion chamber when a part such as a needle is damaged, and simplifies the structure of a second flow path, thereby facilitating fabrication. | 11-14-2013 |
| 20130306034 | METHOD AND DEVICE FOR ACTUATING AN INJECTOR IN A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A device and a method for actuating an injector in a fuel-injection system of an internal combustion engine are described. Using a first calibration method and based on a control parameter, an injector parameter which characterizes the injection process is determined. Starting from this injector parameter, a first feature is determined for calibrating the injector. A second calibration method determines a second feature for calibrating the injector, based on an engine parameter. The first calibration method is monitored on the basis of the second feature. | 11-21-2013 |
| 20130312708 | SYSTEM FOR FUEL INJECTION CONTROL IN AN INTERNAL COMBUSTION ENGINE - A system for fuel injection control in internal combustion engine is provided. Fuel is injected during exhaust stroke from a fuel injector for port injection upstream of an intake valve. In-cylinder temperature as the engine cylinder undergoes compression is predicted. Fuel is injected during intake stroke from the fuel injector to supply fuel to the inside of the cylinder upon determining that the predicated in-cylinder temperature is greater than a temperature beyond which pre-ignition is expected to happen. | 11-28-2013 |
| 20130312709 | METHOD FOR OPERATING A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the actuator is supplied a voltage and/or a current during an activation period. The control valve is set into a lifting motion by the actuator. The injector is opened and closed by the nozzle needle, using the lifting motion of the control valve. A further time period is ascertained. The further time period ends at the closing time of the nozzle needle. A function is ascertained, which links the activation period to the further time period. A shortest activation period, for which the nozzle needle opens and produces an injection, is ascertained with the aid of the function. An opening delay period (d | 11-28-2013 |
| 20130327299 | SYSTEM FOR CONTROLLING COMBUSTION CONDITION IN VEHICLE ENGINE - In a system, a fuel supply increasing unit increases, upon determination that abnormal combustion takes place in at least one cylinder, a quantity of fuel to be supplied into the at least one cylinder in comparison to a quantity of fuel to be supplied into the same cylinder in which no abnormal combustion takes place. A vibration determiner determines whether a level of vibrations of a vehicle has reached a predetermined level. A disabling unit disables, upon determination that the level of vibrations of the vehicle has reached the predetermined level while the fuel supply increasing unit is increasing the quantity of fuel to be supplied into the at least one cylinder, the fuel supply increasing unit from increasing the quantity of fuel to be supplied into the at least one cylinder. | 12-12-2013 |
| 20130327300 | FUEL PRESSURE WAVEFORM ACQUISITION DEVICE - A fuel injection system has a fuel injector and a fuel pressure sensor. An ECU acquires a pressure waveform detected by the fuel pressure sensor during performing a multi-stage injection as a detected waveform at the time of the multi-stage injection, memorizes a model waveform, which is used as a standard of the pressure waveform when an injection that is preceding an target injection is performed without performing the target injection when any one of an injection of a second stage or later of an injection is considered as the target injection among multi-stage injections, and extracts the pressure waveform resulting from the target injection by deducting the model waveform from the detected waveform at the multi-stage injection. The ECU corrects the model waveform used for extraction by a ratio according to a maximum injection rate in the injection of the preceding stage. | 12-12-2013 |
| 20130327301 | Injection Device - An injection device for an internal combustion engine includes a piezo actuator for moving a valve piston, and a control unit for actuating the piezo actuator. The control unit supplies electrical pulses having different pulse energy to the piezo actuator and determines a return stroke between the piezo actuator and valve piston or a time delay caused by the return stroke. The control unit selects the pulse energies such that a maximum excursion of a movement of the piezo actuator caused by at least one pulse is smaller than the return stroke, whereas a maximum excursion of a piezo actuator movement caused by another pulse(s) is greater than the return stroke, after each of the pulses detects a frequency spectrum of a voltage signal at the piezo actuator during the movement caused by the respective pulse, and determines the return stroke or time delay based on these frequency spectra. | 12-12-2013 |
| 20130340716 | CLOSED LOOP CONTROL FUEL INJECTION METHOD - A closed loop control fuel injection method allows an injection amount and injection timing to be obtained, in such a way that an HRR (Heat Release Rate) is calculated from a combustion pressure signal of a combustion pressure sensor after a related pilot fuel amount is injected in a state in which an engine is warmed up, and to be adjusted according to command values, thereby removing inaccuracy of closed loop calibration and risks due to the excess of EM control caused when simply using a combustion pressure diagram, through predefined stable conditions. | 12-26-2013 |
| 20130340717 | Methods and systems for conversion of single-fuel engine to multiple-fuel engine with diesel oxidation catalyst - Engine conversion systems for converting an internal combustion engine from a single to a multiple-fuel engine are described. After engine conversion, an electronic control unit (ECU), can control amounts of a first fuel (for example, diesel) and amounts of a second fuel (for example, propane) that are provided to combustion chambers within the engine while operating in a multiple-fuel mode. The conversion system can include a diesel oxidation catalyst to reduce undesired exhaust emissions of the engine, and backpressure sensors for maintaining engine exhaust backpressure within a pre-conversion range of exhaust backpressures. The conversion systems can be configured for converting engines with mechanically-controlled or electronically-controlled fuel systems. The ECU can be configured to transition from operating in a multiple-fuel mode to a single-fuel mode if the ECU detects conditions that prevent the supply of predetermined amounts of the first and second fuels for detected operating conditions. | 12-26-2013 |
| 20130340718 | DIRECT INJECTION EVENT-BASED ENGINE STARTING - A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event. | 12-26-2013 |
| 20130340719 | METHOD FOR OPERATING AN INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - In a method for operating an injection system for an internal combustion engine having a combustion chamber, in a first method step, a first inlet valve to the combustion chamber is opened and fuel is injected into the combustion chamber through the open first inlet valve by a first injector, and in the first method step, a second inlet valve to the combustion chamber is furthermore opened and fuel is injected into the combustion chamber through the open second inlet valve by a second injector, and in a second method step, additional fuel is subsequently injected into the combustion chamber through the still open first inlet valve by the first injector. | 12-26-2013 |
| 20130340720 | FUEL INJECTION DEVICE - A fuel injection device is provided with a fuel injection valve to inject fuel into a combustion chamber of an engine, and an electronic control unit to operate the fuel injection valve to inject the fuel in multiple separate injections. The electronic control unit controls a timing of a first fuel injection by the fuel injection valve to carry out the first fuel injection on the retard side with respect to a timing when a premix duration immediately after the first fuel injection is minimum, and controls a timing of a second fuel injection by the fuel injection valve in such a manner that a heat release rate waveform produced by the first fuel injection and the second fuel injection carried out thereafter has a double-peaked shape. | 12-26-2013 |
| 20140000566 | INJECTOR NOZZLE COKING COMPENSATION STRATEGY | 01-02-2014 |
| 20140014069 | FUEL INJECTION DEVICE - A fuel injection device is equipped with a fuel injection valve that is mounted in an engine body and injects fuel containing air bubbles, and void fraction adjustment means that changes a void fraction of the fuel that is to be injected from the fuel injection valve. The void ratio adjustment means increases the fuel pressure of the fuel to be injected from the fuel injection valve when an increase of the void fraction is requested. The void fraction adjustment means adjusts the void fraction of the fuel by changing temperature of the fuel to be injected from the fuel injection valve. By appropriately controlling the void fraction, both fuel atomization and securement of the net amount of fuel can be achieved. | 01-16-2014 |
| 20140026859 | Reactivity Controlled Compression Ignition Engine with Exhaust Gas Recirculation - An internal combustion engine is configured to utilize a reactivity controlled compression ignition process and an exhaust gas recirculation (“EGR”) system. The EGR system directs a portion of the exhaust gasses from the exhaust system to the air intake system. The engine system is adapted to introduce a first fuel charge having a first reactivity to a combustion chamber at a first time during the intake-compression cycle of the engine. The engine system is also adapted to introduce a second fuel charge having a second reactivity at a second time during the intake-compression cycle to generate stratified regions of different reactivity in the combustion chamber. A controller operatively associated with the engine can monitor one or more operating parameters and can adjust either the EGR system and/or the second introduction of the second fuel charge based in part upon the operating parameter. | 01-30-2014 |
| 20140026860 | Apparatus and Method for Controlling Internal-Combustion Engine - An apparatus and a method control an internal-combustion engine with a fuel injection valve for injecting fuel into an inlet port. In fuel injection control, injection field pressure at injection start timing is estimated from engine rotation speed and injection starting timing of the fuel injection valve. Since flow rate of the fuel injection valve fluctuates when a fuel accumulating space between a valve body and injection holes of the fuel injection valve changes by injection field pressure, a correction value to correct flow rate fluctuations is calculated based on injection field pressure at injection start timing. Fuel injection by the fuel injection valve is controlled by setting the result of adding the correction value to an injection pulse width calculated from intake air flow, engine rotation speed, etc., to final injection pulse width. Air-fuel ratio error is thereby reduced even when injection field pressure at injection timing changes. | 01-30-2014 |
| 20140034025 | FUEL INJECTION CONTROL APPARATUS - In a fuel injection control apparatus, an injector is driven to open its valve by supplying a coil of the injector with a current during a high-level period of a power supply command signal outputted from a microcomputer. A valve-closing time of the injector is detected based on a coil current, which decreases from a fall time of the power supply command signal. By comparing the coil current with plural equally-divided comparison threshold values by comparators, times are detected when the coil current decreases to the comparison threshold values, respectively. The valve-closing time is detected based on time differences among the detected times. | 02-06-2014 |
| 20140041637 | CONTROL METHOD FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE - The method for controlling the operation of an internal combustion engine comprises at least two operating modes. In a first operating mode, the intake valve is closed at a first predetermined crank angle, in accordance with the Miller cycle, before the piston reaches bottom dead center during the intake stroke for reducing pressure in the cylinder, and fuel is injected using first fuel injection means optimized for large amounts of fuel. In a second operating mode the intake valve is closed at a second predetermined crank angle, in accordance with conventional intake valve closing timing, after or slightly before the piston has passed bottom dead center, and fuel is injected using second fuel injection means optimized for small amounts of fuel. The invention also concerns an internal combustion engine. | 02-13-2014 |
| 20140048045 | INJECTION TIMING - Various systems and methods for determining a start of fuel injection including a gaseous fuel in an internal combustion engine are provided. In one embodiment, an end of gas injection, a duration of gas injection, and a start of gas injection in an induction pipe of a cylinder of an internal combustion engine is determined based on one or more operating parameters. An earliest possible start of gas injection is further determined, and if the start of gas injection is before the earliest possible start of gas injection, at least one of the one or more operating parameters is modified such that the start of gas injection does not occur before the earliest possible start of gas injection. | 02-20-2014 |
| 20140048046 | METHOD AND DEVICE FOR CONTROLLING PILOT INJECTION TIMING WHEN ABNORMALITY OCCURS IN COMBUSTION DIAGNOSIS SIGNAL RELATING TO ENGINE - The present invention includes: an injection timing correction unit | 02-20-2014 |
| 20140048047 | FUEL SUPPLY CONTROL DEVICE AND CONTROL METHOD FOR ENGINE - In an engine that includes a liquid fuel injector and a gaseous fuel injector connected to an intake pipe via a fuel passage and that switches fuel supplied into intake air between liquid fuel and gaseous fuel, an electronic control unit increases fuel in an amount required to fill the fuel passage with gaseous fuel at the time of initial fuel injection from the gaseous fuel injector after switching from liquid fuel to gaseous fuel, | 02-20-2014 |
| 20140053813 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - Provided is a control apparatus for an internal combustion engine, which can adequately perform the control of a fuel injection amount even when an abnormality, a disconnection or the like of a fuel pressure sensor occurs and thereby accurate fuel pressure information is not able to be obtained. | 02-27-2014 |
| 20140060489 | SPARK-IGNITION DIRECT INJECTION ENGINE - A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller operates the engine to perform compression-ignition combustion within a first operating range, and controls the ignition plug to operate the engine to perform spark-ignition combustion within a second operating range. Within a specific part of the first range, the controller sets the fuel pressure to 30 MPa or above, and retards the compression ignition to after a compression top dead center by controlling the injection valve to inject fuel into a cylinder in a period from a late stage of compression stroke to an early stage of expansion stroke. Below the specific part, the controller controls the fuel injection valve to inject the fuel into the cylinder in a period from intake stroke to a mid-stage of the compression stroke. | 03-06-2014 |
| 20140060490 | SPARK-IGNITION DIRECT INJECTION ENGINE - A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel pressure to 30 MPa or above, the fuel injection valve injects fuel between late stage of compression stroke and early stage of expansion stroke, and the ignition plug performs spark-ignition after the fuel injection completes. Within a high engine speed operating range of the high engine load range, the fuel injection valve injects fuel between intake stroke to mid-stage of compression stroke, and the ignition plug performs the spark-ignition. The ignition timing is changed according to an octane number, the changing width of the ignition timing is shorter within the low engine speed range than the high engine speed range. | 03-06-2014 |
| 20140060491 | FUEL INJECTION CONTROL DEVICE FOR SADDLE-RIDE TYPE VEHICLE - A fuel injection control device includes a throttle opening read timing setter that sets the timing at which a throttle opening is read. The setter is triggered to detect the throttle opening used for calculation of a basic injection amount by the start of calculation timing of the basic injection amount (FICAL) if the FICAL is at the position corresponding to a toothless part of a crank pulsar rotor. The setter detects the throttle opening based on crank pulse interrupt according to a crank pulse if the FICAL is at a position other than the position corresponding to the toothless part. | 03-06-2014 |
| 20140060492 | METHOD FOR MODIFYING A VEHICLE TO RECEIVE AND UTILIZE A SECONDARY FUEL - A method for modifying a vehicle to receive and utilize a secondary fuel is provided, as well as the modified vehicle. The vehicle prior to modification can use a primary fuel, and comprises signal transmitter for supplying a signal having a pulse width that varies to vary the quantity of primary fuel provided. The method involves installing a secondary fuel supply module for supplying to the engine a secondary fuel different from the primary fuel, the secondary fuel supply module comprising a secondary fuel injector. The secondary fuel supply module is configured such that the signal transmitter transmits the signal having the pulse width with the duration to the secondary fuel injector to control the secondary fuel injector to provide a suitable quantity of fuel to the engine. | 03-06-2014 |
| 20140060493 | SPARK-IGNITION DIRECT INJECTION ENGINE - A spark-ignition engine is provided. The engine includes an engine body, a fuel injection valve, an ignition plug, an EGR introduction system, and a controller for operating the engine body by controlling the fuel injection valve, the ignition plug, and the EGR introduction system. The controller controls to combust mixture gas by compressing to self-ignite within a compression self-ignition combustion applying range, and to combust the mixture gas by a spark-ignition using the ignition plug within a spark-ignition combustion applying range. Substantially throughout the spark-ignition combustion applying range, the controller controls the EGR introduction system to introduce cooled EGR gas, and within the compression self-ignition applying range, the controller controls the EGR introduction system to introduce hot EGR gas. The controller controls the EGR introduction system to introduce the hot EGR gas and the cooled EGR gas within a low engine load part of the spark-ignition combustion applying range. | 03-06-2014 |
| 20140060494 | On-Vehicle Compressed Natural Gas System With In-Cabin Display - A compressed natural gas (CNG) fueling system includes a CNG reservoir that can be mounted to a vehicle, a sensor arrangement that can sense an environmental condition in a vicinity of the vehicle and a condition associated with the reservoir, an electronically configurable display that can be mounted within a cabin of the vehicle, and an electronic control unit (ECU) operatively arranged with the sensor arrangement and display. The ECU generates output for the display based on the sensed conditions to provide information about the CNG fueling system. | 03-06-2014 |
| 20140060495 | METHOD OF COMPENSATING FOR INJECTOR AGING - A method of controlling a fuel injector is provided. Engine speed is monitored. Engine torque output is monitored. It is determined if the engine speed is within one of a plurality of predefined engine speed ranges. It is determined if the engine torque output is within one of a plurality of predefined engine torque output ranges. One of a plurality of injector coking factors is assigned based on the determined predefined engine speed range and the determined predefined engine torque output range. A total injector coking factor is calculated based upon total operating time within each of the plurality of injector coking factors. A duration of a fuel injection is increased based upon the calculated total injector coking factor. | 03-06-2014 |
| 20140069389 | FUEL INJECTION CONTROLLER - A fuel injection controller is provided with a detection control portion which detects a valve-opening time. The detection control portion supplies the low valve-opening voltage to the fuel injector from a low voltage supply. An electric current flowing through a coil is gradually increased. When the fuel injector is fully opened, an inflection point appears on a waveform of an electric current. A valve-open detecting portion detects the inflection point and identifies a valve-opening time. A correction-amount computing portion computes a correction amount of a fuel injection quantity due to an error of the valve-opening time. In a succeeding fuel injection, the correction portion corrects an electric supply period. As a result, the error of the fuel injection quantity due to an error of valve-opening time is corrected. | 03-13-2014 |
| 20140069390 | FUEL INJECTION CONTROLLER - A fuel injection controller supplies a valve-opening voltage VF | 03-13-2014 |
| 20140069391 | FUEL INJECTION CONTROLLER - A fuel injection controller has terminals which can be connected to the coil of the fuel injector. A first valve-open control portion supplies the valve-opening voltage to the terminals for opening the fuel injector. The first valve-open control portion stops supplying the electric supply to the coil before the fuel injector is positioned at a full-open position. Before the fuel injector is fully dosed, a small injection quantity can be obtained. A demagnetization portion forms a demagnetization circuit for demagnetizing the magnetism remaining in the coil. A normal-injection portion controls the fuel injector at full-open position. | 03-13-2014 |
| 20140069392 | STRATEGY FOR FUELING A DIESEL ENGINE - A compression ignition engine ( | 03-13-2014 |
| 20140069393 | FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - In a fuel injection apparatus for an internal combustion engine, capable of changing a pressure of fuel that is supplied to a fuel injection valve ( | 03-13-2014 |
| 20140096746 | Actuator Unit, In Particular For Injecting A Fuel Into A Combustion Chamber Of An Internal Combustion Engine - An actuator unit for injecting fuel into a combustion chamber of an internal combustion engine includes an electrically conductive excitation winding, a ferromagnetic circuit having a ferromagnetic return, and a moveable armature. The armature is held in an idle position by a holding force of a spring element. A current flowing through the excitation winding produces (a) a magnetic holding force acting on the armature in the same direction as the spring holding force provided by the spring element, and (b) a magnetic motive force acting on the armature in the opposite direction as the magnetic holding force and spring holding force. The armature can be moved to a working position in which the armature adjoins the ferromagnetic return by increasing the current through the excitation winding above a predetermined value that results in the magnetic motive force exceeding the magnetic holding force combined with the spring holding force. | 04-10-2014 |
| 20140123954 | FUEL AMOUNT DISTRIBUTION METHOD FOR ENGINE WITH DUAL INJECTOR AND APPARATUS THEREFOR - It is possible to improve volatility of fuel in a fuel-gas mixture and improve the combustion performance of an engine by appropriately distributing the amount of fuel that is injected from two injectors disposed in two intake port, in a dual injector engine. | 05-08-2014 |
| 20140123955 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery pressure of a low pressure fuel pump is caused to decrease when an amount of change per unit time of an integral term shows a decreasing tendency or zero, whereas the delivery pressure of the low pressure fuel pump is caused to increase when the amount of change per unit time of the integral term shows an increasing tendency. In cases where an increase in the integral term resulting from a change in the target delivery pressure of the high pressure fuel pump has occurred, the increase in the delivery pressure of the low pressure fuel pump is prohibited. | 05-08-2014 |
| 20140123956 | CONTROL DEVICE FOR DIRECT INJECTION ENGINE - The present invention provides a control device for a direct injection engine, capable of reducing the amount of fuel adhesion on a piston crown and a cylinder bore wall surface and improving homogeneity of a fuel-air mixture inside the cylinder, thereby reducing the particulate number of emitted PM. The fuel injection is inhibited for a period in which a lift position of an intake valve is within a predetermined range in a single combustion cycle, more specifically, during the period in which the lift position of the intake valve is located from a middle lift position to the vicinity of a maximum lift position. | 05-08-2014 |
| 20140130779 | Wideband Oxygen Sensing Method and Apparatus - A method of determining an air:fuel ratio based on information from an oxygen sensor exposed to exhaust gases of a combustion process, and related systems. A constant current is supplied to an oxygen sensor that has both an n-type sensing circuit and a p-type sensing circuit that share a common electrode. The currents in the respective sensing circuits is determined and a temperature value representative of a temperature of the oxygen sensor is determined. Then, an air:fuel ratio is determined based on the determined currents and the temperature value. The combustion process may then be controlled based on the air:fuel ratio. The air:fuel ratio may be determined, using the same oxygen sensor, across a range of air:fuel values in both the rich and lean regions; as such, the oxygen sensor may act as a wideband oxygen sensor. | 05-15-2014 |
| 20140174406 | CONTROL SYSTEM FOR AN ENGINE WITH EGR FLOW - A system associated with an internal combustion engine is disclosed. The system may be configured to inject fuel at a current fuel injection flow rate and to direct exhaust at a current EGR flow rate. A controller may be configured to determine a maximum fuel injection flow rate and a maximum EGR flow rate based on a first and second group of operating parameters, wherein the first and second group may comprise at least common operating parameter including an oxygen-to-fuel ratio limit. Additionally, the controller may set the current fuel injection flow rate to the maximum fuel injection if a fuel injection flow request, associated with a fuel injector, is greater than the maximum fuel injection flow rate and set the current EGR flow rate to the maximum EGR flow rate if an EGR flow request, associated with an EGR valve, is greater than the maximum EGR flow rate. | 06-26-2014 |
| 20140182559 | Gaseous Fuel System, Direct Injection Gas Engine System, and Method - The disclosure describes an engine system having liquid and gaseous fuel systems, each of which injects fuel directly into an engine cylinder. A controller controls the pumping of a liquefied natural gas (LNG) in the gaseous fuel system using variable speeds for reciprocally moving a pumping piston of a pumping element with a drive assembly. The controller adjustably controls the drive assembly of the pump system to vary a time period for the pump cycle based upon a comparison of a pressure measured in the accumulator and a target pressure condition. When the accumulator pressure satisfies the target pressure condition, the controller is adapted to control the drive assembly such that the pumping element is in a creep mode in which the pumping piston continues to move, but produces no more than a nominal amount of compressed LNG. | 07-03-2014 |
| 20140182560 | VARIABLE SPEED DUAL FUELED ENGINE AND ELECTRICAL POWER MANAGEMENT APPARATUS AND METHODS - A fuel system is provided for use with a variable speed dual fuel engine. The fuel system comprises a first fuel injector configured for supplying diesel fuel to the engine, a second fuel injector configured for supplying natural gas to the engine, and a fuel controller configured to implement a diesel injection schedule and a natural gas injection schedule based on at least a fuel map, an optimal engine speed and a current engine speed. | 07-03-2014 |
| 20140190453 | Method to Detect Partial Failure of Direct-Injection Boost Voltage - A power supply diagnostic circuit includes a switching power supply that generates a voltage for powering a fuel injector. An injector control module selectively applies the voltage to the fuel injector and monitors a resultant electrical current flow through the fuel injector. The switching power supply includes a dual path circuit comprising two inductors, two MOSFETs, and two diodes. The injector control module determines whether one path of the dual path circuit is defective based on the electrical current flow. | 07-10-2014 |
| 20140216413 | METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE, AND VEHICLE EQUIPPED WITH SAME - A method for controlling an internal combustion engine, an internal combustion engine, and a vehicle equipped with the same which reduce roll vibrations due to a power plant including a multi-cylinder internal combustion engine and a support apparatus during start of the internal combustion engine without impairing its startability. A control apparatus of a multi-cylinder internal combustion engine includes: a device for determining whether or not a rotational speed of the engine is within a resonance-rotational-speed region around a resonance rotational speed at which resonance occurs due to the rotational speed, a power plant including the engine, and rubber mounts of the power plant; and a device for controlling injectors such that fuel injection amounts of respective cylinders become uneven when the rotational speed is within the resonance-rotational-speed region. | 08-07-2014 |
| 20140216414 | CONTROL UNIT FOR INTERNAL COMBUSTION ENGINE - A control unit for an internal combustion engine includes a load detector to detect a load on the engine, an injection volume calculator to calculate a cylinder injection volume indicating a volume of fuel injected from a direct injector, a first controller to perform a first control for increasing the frequency of the injection by the direct injector upon a reduction in the cylinder injection volume, a second controller to perform a second control for increasing a port injection volume indicating a volume of fuel injected from a port injector upon a reduction in the cylinder injection volume, and a switching controller to switch between the first control with the first controller and the second control with the second controller depending on the load. | 08-07-2014 |
| 20140230792 | CONTROL UNIT FOR INTERNAL COMBUSTION ENGINE - Provided is a control unit ( | 08-21-2014 |
| 20140230793 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS - In a dual-fuel injection operation, when a fuel injection time by a direct injector as determined on the basis of a direct fuel pressure is less than a minimum value, a dual-injection is performed with a duel injection rate such that the amount of fuel injected by the direct injector is greater than when the dual-injection is performed with a duel injection rate which is determined in accordance with an engine operation state. Thus, the amount of fuel injected by the direct injector is increased, so that the high-temperature fuel that has remained in a high-pressure fuel pipe connected to the injector is rapidly injected and consumed. As a result, the direct fuel pressure can be rapidly lowered, whereby the fuel injection time by the direct injector for implementing an amount of fuel injection in accordance with a direct injection command value can be rapidly increased to the minimum value. | 08-21-2014 |
| 20140238354 | FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM - A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold. | 08-28-2014 |
| 20140251279 | CONTROL OF THE INJECTION OF FUEL UPON COMBUSTION ENGINE START-UP - A method for controlling injection of fuel upon start-up of a combustion engine including determining a set point quantity of fuel on start up, which is dependent on a difference between a set point acceleration of the engine and an instantaneous acceleration of the engine. An electronic control unit and a motor vehicle can execute the method. | 09-11-2014 |
| 20140251280 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - A control apparatus that controls a fuel supply system of an internal combustion engine of a vehicle, the fuel supply system including a low-pressure fuel supply mechanism that injects low-pressure fuel into an intake port of the internal combustion engine, and a high-pressure fuel supply mechanism that injects high-pressure fuel into a cylinder of the internal combustion engine, includes a control portion that controls a supply of fuel to the internal combustion engine from the fuel supply system. Immediately after the vehicle stops, when the internal combustion engine satisfies a predetermined condition, the controller idles the internal combustion engine by supplying the high-pressure fuel to the internal combustion engine by the high-pressure fuel supply mechanism, and after stopping the supply of fuel by the high-pressure fuel supply mechanism, idles the internal combustion engine by supplying the low-pressure fuel to the internal combustion engine by the low-pressure fuel supply mechanism. | 09-11-2014 |
| 20140251281 | FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - When injecting fuel from a direct injector and a port injector such that a requested fuel injection amount for an internal combustion engine is reached, the direct injector is driven in the following manner. That is, target fuel injection amounts are set on the basis of the engine operating state in order from the fuel injection with the highest priority among fuel injection in a compression stroke, fuel injection in the late stage of an intake stroke, and fuel injection in the early stage of the intake stroke in the direct injector, and the abovementioned setting continues until the total value of the target fuel injection amounts reaches the requested fuel injection amount. Moreover, the direct injector is driven in such a manner that the target fuel injection amounts for each of the abovementioned fuel injections set in this manner are obtained. | 09-11-2014 |
| 20140283792 | SYSTEM, METHOD, AND APPARATUS FOR FUEL INJECTION CONTROL - A method includes determining a stored injection relationship that includes a number of fuel performance parameters. In one form the fuel performance parameters are related to a particular shape, and may be related to a particular operating condition. The method includes determining a fuel performance outcome during a fuel injection event, and updating the stored injection relationship in response to the fuel performance outcome. The fuel performance outcome can be an injected fuel quantity. | 09-25-2014 |
| 20140290624 | FUEL INJECTION CONTROL SYSTEM - A fuel injection control system includes an engine speed detector, a throttle opening degree detector, a fuel injection device, a fuel injection controller, a fuel injection number determining device, and a fuel injection mode setting device. The engine speed detector is configured to detect an engine speed (NE). The throttle opening degree detector is configured to detect a throttle opening degree (TH). The fuel injection device is configured to inject fuel. The fuel injection controller is configured to calculate, based on an injection amount map, a fuel injection amount of the fuel to be injected from the fuel injection device and is configured to control the fuel injection device to inject the fuel according to the calculated fuel injection amount. | 10-02-2014 |
| 20140299104 | SYSTEM AND METHOD FOR ESTIMATING THE RICHNESS OF THE GASEOUS MIXTURE IN THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE POWER PLANT - A system for estimating richness of a gaseous mixture in a combustion chamber of an internal combustion engine of a motor vehicle power plant, including a mechanism injecting an additional combustible gas into a fresh air intake circuit of the engine, a mechanism measuring concentrations of the additional gas in the fresh air intake circuit and in an engine exhaust gas circuit respectively, a mechanism determining a ratio between the measured concentration of the additional gas in the intake circuit and the measured concentration of the additional gas in the exhaust circuit, and a mechanism estimating the richness of the gaseous mixture in the combustion chamber of the engine from the determined ratio. | 10-09-2014 |
| 20140299105 | Methods for Low Temperature Combustion and Engines Using the Same - This invention discloses a method for low temperature combustion using at least two fuels with low and high boiling points being directly injected into engine combustion chamber separately and sequentially with two different spray patterns, wherein the low boiling point fuel can be quickly vaporized to form a low temperature zone for containing fuel jet combustion of high boiling point fuels. An internal combustion engine using the disclosed low temperature combustion method is also provided. | 10-09-2014 |
| 20140299106 | Autonomous Multi-Fuel Engine Using Gaseous Fuels - An engine uses gaseous fuel from an intermittent fuel source and a backup fuel source. A fuel supply and control system includes intermittent and backup fuel supply lines, a sensor, a flow control device, and an engine controller. The intermittent and backup fuel supply lines deliver gaseous fuel from the intermittent and backup fuel sources to the engine. The sensor detects fluctuations in gaseous fuel availability within the intermittent fuel supply line and outputs a signal responsive to the fluctuations. The flow control device selectively enables gaseous fuel to the engine from either the intermittent fuel source or the backup fuel source. The engine controller receives the signal from the sensor and, responsive to the received signal, operates the flow control device to select between the intermittent fuel source and the backup fuel source as the supply of gaseous fuel to the engine. | 10-09-2014 |
| 20140299107 | CONTROL SYSTEM AND CONTROL METHOD OF SPARK IGNITION GASOLINE ENGINE - An engine body includes a cylinder with a geometrical compression ratio of 15 or higher, and is supplied with fuel containing at least gasoline. When an operating mode of the engine body is in a high load range, a controller (i.e., a PCM | 10-09-2014 |
| 20140311457 | Controller for an Injection System - A controller for an injection system having a plurality of fuel injectors includes a map controller. From a desired injection value, the map controller generates a control value for actuating a fuel injector with reference to a specified map. A determination unit determines the actual injection value for at least one injection made, and an adaption unit uses results from the determination unit in order to adapt actuation of the fuel injectors. The adaption unit determines an adaption value for injector actuation from the at least one actual injection value. In engine operation, the adaption unit receives the control values generated by the map controller as input. From this input, the adaption unit generates adapted actuation values as output by applying a mathematical function to the control values generated by the map controller. The at least one adaption value is included in the first mathematical function as parameter. | 10-23-2014 |
| 20140311458 | ENGINE EXHAUST PURIFICATION DEVICE - An engine exhaust purification device includes a filter, a burner, and a control unit. The filter is arranged in an engine exhaust pipe. The burner burns fuel injected from a fuel injection nozzle and heats exhaust to increase the temperature of the filter at an upstream side of the filter in the exhaust pipe. A period including a single fuel injection period and a single injection stop period is set as a single injection cycle. The fuel injection period is a period injecting fuel a number of times at a predetermined frequency. The injection stop period is a variable period that stops fuel injection. The control unit controls the fuel injection nozzle so that the fuel injection nozzle injects the fuel according to the injection cycle. The control unit is configured to lengthen the injection stop period as the temperature of the filter increases. | 10-23-2014 |
| 20140311459 | FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - When a given learning performance condition is met, a partial lift injection for opening a fuel injector is performed by an injection pulse which brings about a partial lift state in which a lift quantity of a valve body of the fuel injector does not reach a full lift position, and an integrated value of a drive current is calculated which flows through a drive coil of the fuel injector after an injection pulse of the partial lift injection is turned off. An inductance of the drive coil is calculated in consideration of a direct current superposition characteristic of the drive coil on the basis of the integrated value of the drive current, whereby the inductance of the drive coil is calculated with high accuracy. Then, the lift quantity of the valve body is estimated on the basis of the inductance, whereby the lift quantity of the valve body is estimated with high accuracy. The injection pulse of the partial lift injection is corrected on the basis of the lift quantity, whereby the injection pulse of the partial lift injection is corrected with high accuracy. | 10-23-2014 |
| 20140311460 | FUEL SUPPLY CONTROL APPARATUS FOR BI-FUEL INTERNAL COMBUSTION ENGINE, AND METHOD OF SWITCHING FUEL IN BI-FUEL INTERNAL COMBUSTION ENGINE - When switching the fuel to be used for engine operation from gasoline to CNG, in a state where CNG is supplied experimentally to one cylinder serving as a judgment object and gasoline is supplied to other cylinders, whether or not CNG can be supplied to the cylinder serving as a judgment object is judged based on an amount of change ΔPc in fuel pressure inside a CNG delivery pipe (Step S | 10-23-2014 |
| 20140318498 | SYSTEM AND METHOD FOR INJECTOR COKING DIAGNOSTICS AND MITIGATION - A system and method for compensating for, or alleviating accumulation of, coking residues on fuel injectors is disclosed. The method includes adjusting an engine operating parameter based on a shift in a fuel injector current profile during an initial current rise of injector activation. | 10-30-2014 |
| 20140318499 | FUEL INJECTION DEVICE FOR ENGINE OF MOTORCYCLE - A motorcycle engine having cylinders arranged in parallel in a vehicle width direction, an air cleaner, a fuel tank arranged above the engine to cover the air cleaner, and a fuel injection device. The fuel injection device includes an electronic control throttle body unit electrically controlling a throttle body of the engine; an intake passage of down draft intake structure connecting the air cleaner and a combustion chamber of the engine in each of the cylinders; fuel injectors provided at the intake passage including a first fuel injector located on an intake downstream side and a second fuel injector located on an intake upstream side; and a drive motor of the electronic control throttle body unit arranged between the intake passage and the fuel tank and arranged on a same side as the first fuel injector and the second fuel injector and between the first and second fuel injectors. | 10-30-2014 |
| 20140318500 | FUEL PROPERTY DETERMINATION SYSTEM FOR VEHICLE - An object of the present invention is to provide a technology with which when a gaseous fuel is supplied into a fuel tank of a vehicle with an internal combustion engine that uses gaseous fuel, properties of the supplied gaseous fuel can be determined promptly. To achieve the object, the fuel property determination system for a vehicle equipped with an internal combustion engine using gaseous fuel according to the present invention is adapted to calculate, when gaseous fuel is supplied to the fuel tank, the gas constant of the supplied gaseous fuel using a cross sectional area of a passage for delivering gaseous fuel to the fuel tank from a filler port and a change in the pressure in the fuel tank as parameters and to calculate the concentration of inert gases contained in the gaseous fuel using the gas constant as a parameter. | 10-30-2014 |
| 20140318501 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An objective of the present invention is to stabilize the fuel injection amount for each cylinder and to execute fuel injection control accurately in a single-pressure-feed dual-injection type alcohol fuel injection system. An engine includes two injection valves and and a single-pressure-feed dual-injection type fuel supply system. The fuel supply system is configured such that fuel is injected sequentially in two cylinders during the pressure-feed-interval period from the execution of one fuel pressure-feed operation to the execution of the next fuel pressure-feed operation. If the alcohol concentration in the fuel is higher than a predetermined determination value γ at a startup operation time, an ECU executes only a cylinder injection for the first of the two cylinders described above, and executes both an intake passage injection and a cylinder injection for the second cylinder. Thus, even if the fuel pressure decreases due to the fuel injection for the first cylinder, the required fuel injection amount can be reserved for the second cylinder. | 10-30-2014 |
| 20140326218 | Method For Determining A Position Of A Lock Element Of An Injection Valve For An Internal Combustion Engine - A method for determining a position of a lock element of an injection valve for an internal combustion engine includes moving the lock element in the direction of a locked position in a closing movement in order to lock the injection valve, subsequently measuring a closure time at which the lock element arrives in the locked position, determining a time difference between the closure time and a preceding starting time of the closing movement, and determining, based on the time difference, a position which the lock element has assumed at the starting time of the closing movement. | 11-06-2014 |
| 20140331973 | INTERNAL COMBUSTION ENGINE - An internal combustion engine includes first and second fuel injection valves, a valve actuating device and an ECU. The ECU sets a distribution ratio of the first fuel injection valve to 100% when an accumulation amount Spfi is larger than a predetermined value Xpfi in a predetermined case. The predetermined case is a case where the valve actuating device closes the exhaust valve on an advance side with respect to an exhaust top dead center and a state where a minus overlap is formed between the intake valve and the exhaust valve is established and a case where the distribution ratio of the second fuel injection valve is set to 100%. | 11-13-2014 |
| 20140338640 | Method for learning a minimum actuation duration of fuel injectors of an internal combustion engine - A method for learning and determining a minimum injector-specific electric actuation duration for at least one fuel injector of an internal combustion engine of a motor vehicle. Starting with a predefined electric actuation duration which definitely does not result in an injection, the electric actuation duration is gradually increased in each engine stop and/or in each engine start in successive engine stops and/or in successive engine starts of the internal combustion engine up to an actuation duration in which an injection with a combustion occurs, and then this actuation duration may be determined as the minimum electric actuation duration. The invention also relates to a corresponding device. | 11-20-2014 |
| 20140345571 | Determining the Opening Behavior of a Fuel Injector by Means of an Electrical Test Excitation Without Magnetic Saturation - A method for determining an opening behavior of a combustion engine fuel injector having a coil drive includes: applying to a coil of the coil drive an electrical test excitation that is weaker than an electrical standard excitation applied to the coil during normal operation of the engine, such that an opening position of the fuel injector is achieved at a point at which the coil drive is not in magnetic saturation; measuring the chronological progression of an electrical variable of the coil; determining a first point in time at which the fuel injector reaches its opening position under the influence of the electrical test excitation, based on the measured chronological progression of the electrical variable, and determining a second point in time at which the fuel injector would reach its opening position under the influence of the electrical standard excitation, based on the determined first point in time. | 11-27-2014 |
| 20140352667 | Fluid Injector For a Combustion Engine - A fluid injector for a combustion engine includes a central longitudinal axis, an injection valve housing with an injection valve cavity, a valve needle axially movable within the injection valve cavity, and an electromagnetic actuator unit that actuates the valve needle. The electromagnetic actuator unit includes a pole piece fixedly coupled to the injection valve housing and an armature axially movable within the injection valve cavity and operable to displace the valve needle. The pole piece has a first contact surface and the armature has a second contact surface which are directed opposite each other, wherein one of the two contact surfaces is designed to have a contact angle of less than 90° with a given fluid,and wherein the other of the two contact surfaces is designed to have a contact angle of at least 90° with the given fluid. | 12-04-2014 |
| 20150013646 | Multifunctional fluid level and quality sensing device - A multifunctional fluid level and quality sensing device including a fluid level sensor and a capacitive sensor for detecting fluid level, fluid quality, errors in the sensing device, and issues in a fluid delivery system. In detecting fluid level, impedance of the capacitive sensor is used in improving sensing performance of the fluid level sensor, while in detecting fluid quality and errors in the sensing device, an expected impedance range with an upper boundary value and a lower boundary value is calculated, and a fault is generated when the measured impedance value is out of the expected impedance range. The fluid level and quality sensing device can also be used in a fluid delivery system for detecting system issues, and the results can be used for further isolating errors in the system. Operating status of higher level system provides more information for this purpose. | 01-15-2015 |
| 20150013647 | Method for Operating a Fuel Injection System with Fuel Injection Valve Regulation to Increase the Quantitative Accuracy, and a Fuel Injection System - A method for operating a fuel injection system of an internal combustion engine uses a piezo actuator that includes, in addition to the active piezo region used to actuate the servo valve, a passive piezo region that acts as a force sensor. A force measurement is performed using this force sensor during the injection phase or in the injection pause, and a correction variable for controlling the piezo actuator is determined from the deviation between the actual force progression and a target progression, in order to regulate the injection process in this manner. A fuel injection system configured to perform such a method is also disclosed. | 01-15-2015 |
| 20150027414 | FUEL INJECTION CONTROLLER - A fuel injection controller controls a fuel injector which injects a fuel directly into a cylinder of an engine. The fuel injection controller conducts a correction to increase a fuel injection quantity injected from the fuel injector according to a fuel-adhered quantity which is an amount of the fuel adhered to an opened intake valve. Thus, even when the fuel is adhered to the intake valve, an appropriate amount of the fuel can be injected into the cylinder. | 01-29-2015 |
| 20150053183 | METHOD FOR IMPROVING CLOSELY-SPACED MULTIPLE-INJECTION PERFORMANCE FROM SOLENOID ACTUATED FUEL INJECTORS - A method for controlling an electromagnetically-activated fuel injector includes, when a plurality of fuel injection events are close-spaced during an engine cycle, monitoring a respective desired injected fuel mass for each of the plurality of fuel injection events. A desired current wave form is selected from a plurality of current waveforms whereat each respective desired injected fuel mass is achieved based on at least one of the fuel injection events. The fuel injector is controlled using the desired current waveform. | 02-26-2015 |
| 20150053184 | SYSTEM AND METHOD FOR ADJUSTING ON-TIME CALIBRATION OF A FUEL INJECTOR IN INTERNAL COMBUSTION ENGINE - The disclosure provides a system and method for determining an amount of fuel injected or delivered by a single fuel injector in an internal combustion engine by generating one fuel injection event after the engine has stopped operating. The fuel delivered is statistically analyzed in comparison with a commanded fuel delivery amounts to determine the suitability of fuel injector on-time calibration for the analyzed fuel injector. If the fuel delivered deviates from the commanded amount of fuel delivery by a predetermined value, the fuel injector on-time calibration for the analyzed fuel injector is changed. | 02-26-2015 |
| 20150096539 | METHOD FOR CONTROLLING AT LEAST ONE PIEZOELECTRIC ACTUATOR OF A FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE - A method for controlling a piezoelectric actuator of a fuel injector of an internal combustion engine of a vehicle, the actuator acting on valve elements to open or close the injector, respectively enabling or stopping the injection of fuel into a combustion chamber of the engine, includes the steps of:
| 04-09-2015 |
| 20150128909 | METHOD AND APPARATUS FOR CONTROLLING OPERATION OF AN INTERNAL COMBUSTION ENGINE OPERATING IN HCCI COMBUSTION MODE - An internal combustion engine is configured to operate in a homogeneous-charge compression-ignition combustion mode. A method for operating the internal combustion engine includes determining a desired effective charge dilution for a cylinder charge for a cylinder firing event. A desired air/fuel ratio, a desired intake air mass and a desired intake oxygen are determined to achieve the desired effective charge dilution for a combustion event. The desired air/fuel ratio is adjusted based upon a difference between the desired intake oxygen and the actual intake oxygen, and engine operation is controlled to achieve the adjusted desired air/fuel ratio. | 05-14-2015 |
| 20150128910 | Method for Operating a Fuel Injection System and Fuel Injection System Comprising Fuel Injection Valves with a Piezo Direct-Drive - A method for operating a fuel injection system includes detecting the pressure prevailing in a pressure accumulator using a fuel injection valve piezo actuator that includes, in addition to the active piezo region used to actuate the closing element, a passive piezo region that acts as a pressure sensor. Using this pressure sensor, the closing element force acting on the passive piezo region, and therefore the pressure prevailing in the pressure accumulator, can be determined. | 05-14-2015 |
| 20150330344 | HIGH PRESSURE, HIGH SPEED REGULATING SWITCH VALVE - The present disclosure provides a fuel injector for an internal combustion engine with a fuel injector body having a valve chamber, a first conduit in fluid communication with the valve chamber for a first flow of fuel having a first pressure, and a second conduit in fluid communication with the valve chamber for a second flow of fuel having a second pressure. The fuel injector further includes a valve member configured to move between the first conduit and the second conduit. Additionally, an actuator of the fuel injector is configured to move the valve member during a fuel injection cycle. The fuel injector is configured to operate in at least three modes. | 11-19-2015 |
| 20150369163 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE AND CORRESPONDING INTERNAL COMBUSTION ENGINE - A method for operating an internal combustion engine having at least one fuel injection valve for introducing fuel into a combustion chamber of the internal combustion engine, the valve being supplied with a specified current intensity in order to adjust a specified flow cross-section of a fuel fluidic connection in the combustion chamber. The maximum specified current intensity during normal operation is equal to a first current intensity and during a release operation is equal to a second, higher current intensity. | 12-24-2015 |
| 20150377170 | Air-Fuel Parameter Control System, Method and Controller for Compensating Fuel Film Dynamics - An air-fuel parameter control system includes an injector, an air-fuel parameter sensor, a fuel film parameter calculation module, an air-fuel parameter prediction module and a fuel injection calibration module. The injector injects fuel into an intake manifold. The air-fuel parameter sensor detects a detected air-fuel parameter in an exhaust pipe. The fuel film parameter calculation module calculates a fuel film parameter relating to a fuel film accumulated the intake manifold based on the detected air-fuel parameter, an amount of the injected fuel and an amount of air flowing into the engine. The air-fuel parameter prediction module predicts a predicted air-fuel parameter based on the detected air-fuel parameter and the fuel film parameter. The fuel injection calibration module calibrates the amount of the injected fuel based on a difference between a reference air-fuel parameter and the predicted air-fuel parameter. | 12-31-2015 |
| 20160003182 | Control Device for Internal Combustion Engine - A control device is provided which prevents a temperature increase within an ECU by suppressing heat generation in the ECU without using a new cooling device such as a blow fan. In one step, an open valve voltage target value is calculated. An open valve voltage is a voltage applied to a fuel injection valve when opening the fuel injection valve. As the number of times of the multi-stage injections increases, an opportunity to boost the open valve voltage increases, heat is generated in the open valve voltage boosting section, a temperature within the ECU excessively increases, and there is a concern that an electronic component within the ECU malfunctions or fails. Thus, a temperature sensor is provided on an inside of the ECU and if an ECU temperature is high, it is determined that heat is generated in the open valve voltage generating section and the open valve voltage target value is reduced. | 01-07-2016 |
| 20160032860 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINES - A control device for an internal combustion engine which includes one of the port injection fuel injection valve and the cylinder injection fuel injection valve that serves as a main fuel injection valve, the other of the fuel injection valves that serves as an auxiliary fuel injection valve arranged to be auxiliarily operated in a specified engine driving condition, and which is configured to perform a switching of an injection and a stop of the auxiliary fuel injection valve in accordance with an engine driving condition, the control device includes: the control device being configured to switch the injection and the stop of the auxiliary fuel injection valve in a state where an air-fuel ratio by an injection amount of the fuel by the main fuel injection valve is thicker than a stoichiometric air-fuel ratio. | 02-04-2016 |
| 20160053704 | Method And Device For Injecting Fuel Into An Internal Combustion Engine - An injection system for an injection system includes at least one injection valve for injecting fuel into an internal combustion engine. A closing element of the injection valve is moved in recurring injection cycles such that the closing element hits an upper stop at an actual opening time and/or hits a closing position at an actual closing time and thereby triggers a characteristic signal of a sensor element of the injection valve, wherein a signal course of the sensor element over time is detected and a part of the signal course contained in a searching time period of the injection system is examined, wherein a searching method is performed in subsequent injection cycles if the characteristic signal is not detected in said part of the signal course over time. | 02-25-2016 |
| 20160076477 | Fuel Injector - A dual-mode fuel injector has an internal part containing a variable volume chamber space which fills with fuel at common rail pressure and a plunger which is operable to force fuel out of the variable volume chamber space and to be injected out of the nozzle through the injection orifices at amplified pressure greater than common rail pressure. The plunger and the internal part have respective surfaces which come into mutual abutment during filling of the variable volume chamber space with fuel at common rail pressure and which, when in mutual abutment, create a seal which seals fuel in the variable volume chamber space against escape from the variable volume chamber space past the seal. | 03-17-2016 |
| 20160084214 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS - An internal combustion engine control apparatus includes: an ignition coil including a primary coil and a secondary coil that are magnetically coupled to each other; a first switch element for turning on and off a current to the primary coil; and a spark plug, for igniting an air-fuel mixture in an internal combustion engine by using a spark discharge caused by switching the first switch element from the ON state to the OFF state. The internal combustion engine control apparatus is configured to: determine occurrence of one of an abnormality in a discharge voltage and a misfire of the spark plug, when the calculated time duration in which a voltage of the primary coil after the switching of the first switch element from the ON state to the OFF state is above a predetermined comparison reference voltage does not fall within an allowable range. | 03-24-2016 |
| 20160115894 | FUEL INJECTOR OF INTERNAL COMBUSTION ENGINE AND FUEL INJECTION METHOD THEREOF - A fuel injector for an internal combustion engine includes a fuel injection valve, a heater, and a controller. The fuel injection valve is configured to supply fuel to the internal combustion engine. The heater is configured to heat the fuel in the fuel injection valve. The controller is configured to: control the fuel injection valve to stop supplying the fuel to the internal combustion engine, control the heater to execute or stop heating the fuel in the fuel injection valve, and control the fuel injection valve to prohibit the stop of supplying the fuel during execution of the heating by the heater. | 04-28-2016 |
| 20160115896 | FUEL INJECTION DEVICE - When a main injection is performed, a first timing that is a time earlier than a second timing is selected as the valve opening starting timing, and a first period that is the period of time shorter than a second period is selected as the control period. Also, when a pilot injection is performed, the second timing that is the time later than the first timing is selected as the valve opening starting timing, and the second period that is the time longer than the first period is selected as the control period. Thus, in an injector with increased valve opening responsiveness, the valve opening behavior of a control valve of the injector in fuel injection with a minute injection quantity can be stabilized without replacing a control device, particularly an EDU with that of a large current specification. | 04-28-2016 |
| 20160115921 | INJECTOR WAVEFORM - A system for controlling the displacement of a spool in a spool valve of a fuel injector. One or more coils may be employed to move the spool between closed and open positions in the fuel injector. The shape of the current waveform used to generate a magnetic field in one or more coils for displacing the spool may vary depending on engine operating conditions. Moreover, the shape of the current waveform applied to coils in the fuel injector may be different for engine operating conditions. Such differences in waveform shape may at least assist, in real time, with the engine obtaining improved engine emissions and/or otherwise obtaining fuel injection goals. | 04-28-2016 |
| 20160123245 | INTERNAL COMBUSTION ENGINE CONTROL DEVICE - An internal combustion engine control device for a dual-injection internal combustion engine acquires first and second increase values, which are fuel increase ratios according to respective alcohol concentrations of a fuel injected by cylinder injection and a fuel injected by port injection. The control device determines a basic total injection amount of fuel that should be supplied to each cylinder in the case where the alcohol concentration of the fuel is zero. An amount of fuel injected from a cylinder injection valve is determined as if the alcohol concentration of the fuel were zero. A total injection amount is to correspond to an amount in accordance with the basic total injection amount and both, the first increase value and the second increase value, so that the increase in injected fuel amount is borne by port injection. | 05-05-2016 |
| 20160123268 | ENGINE CONTROL DEVICE - An engine control device for an engine provided with a supercharger, including a cylinder injection valve and a port injection valve. The device includes an injection controller that controls injections of fuel through the cylinder injection valve and through the port injection valve, on the basis of at least a load on an engine. The injection controller, in a low load operating state, causes the fuel to be injected through the port injection valve; in an intermediate load operating state, causes the fuel to be injected through the cylinder injection valve during an intake stroke, and causes the fuel to be injected through the port injection valve; and in a high load operating state, causes the fuel to be injected through the cylinder injection valve at least during an intake stroke and during a compression stroke. | 05-05-2016 |
| 20160131049 | METHOD FOR CONTROLLING FUEL SWITCHING IN BI-FUEL VEHICLE - A method for controlling fuel switching of a fuel switching system in a vehicle via a controller configured to receive one or more measured signals in order to issue a fuel shortage warning or in order to control fuel switching is disclosed. The system includes an LPG rail pressure sensor for measuring a pressure in an LPG rail, and a bombe pressure sensor for measuring a pressure in the bombe. The method includes a first LPG rail pressure determining step of determining whether the pressure in the LPG rail is lower than a second reference value or not and a first bombe pressure determining step of determining whether the pressure in the bombe is lower than a third reference value or not. If at least one of the first pressure determining steps is positive, the method further includes switching the fuel to gasoline. | 05-12-2016 |
| 20160131055 | SYSTEM AND METHOD FOR DETERMINING THE REID VAPOR PRESSURE OF FUEL COMBUSTED BY AN ENGINE AND FOR CONTROLLING FUEL DELIVERY TO CYLINDERS OF THE ENGINE BASED ON THE REID VAPOR PRESSURE - A system according to the principles of the present disclosure includes a Reid vapor pressure (RVP) module and a fuel control module. The RVP module determines a Reid vapor pressure of fuel combusted by an engine based on a hydrocarbon concentration measured by a hydrocarbon sensor disposed in a fuel system of the engine. The fuel control module controls at least one of a fuel injector of the engine, a purge valve in an evaporative emissions (EVAP) system of the engine, and a vent valve in the EVAP system of the engine to adjust an amount of fuel delivered to cylinders of the engine based on the Reid vapor pressure. | 05-12-2016 |
| 20160138511 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - Provided is a control device for an internal combustion engine which can suppress a relative variation in the fuel injection amount for each cylinder. A drive pulse width to drive the fuel injection valve for injecting the fuel is calculated according to a driving state of the internal combustion engine, any one or both of a valve-opening response delay time and a valve-closing response delay time with respect to a drive pulse signal of the fuel injection valve for each fuel injection value are calculated, and the drive pulse width is corrected to make an injection amount of each fuel injection valve matched to a predetermined injection amount based on any one or both of the valve-opening response delay time and the valve-closing response delay time calculated for each fuel injection valve. | 05-19-2016 |
| 20160146123 | FUEL SWITCHING CONTROL METHOD FOR BI-FUEL VEHICLE - A fuel switching control method for a bi-fuel vehicle includes a residual fuel amount measurement step measuring a first fuel level. A fuel amount comparison step checks whether the measured first fuel amount is lower than a first reference value. A fuel injection amount comparison step checks whether an accumulated amount of injected fuel is lower than a second reference value. A mileage comparison step checks whether the accumulated mileage is lower than a third reference value. A pressure comparison step checks whether pressures in a first fuel supply rail and first fuel tank are higher than fourth and fifth reference values, respectively. A pressure variation comparison step checks whether pressure variations in the first fuel supply rail and first fuel tank are lower than sixth and seventh reference values, respectively. A second fuel mode drive step switches from a first fuel mode to a second fuel mode. | 05-26-2016 |
| 20160146125 | COMBUSTION-NOISE CONTROLLING METHOD FOR DIESEL ENGINE - A combustion-noise controlling method for a diesel engine includes: setting a target value for a vibration peak using one or more control variables needed for driving a vehicle, diagnosing a combustion noise of the engine based on the target value, and checking whether the diagnostic value for the combustion noise is higher than a reference value previously input to a controller. Combustion is performed depending on a result of the checking. A vibration signal of the engine is measured, and a vibration peak value depending on the measured vibration signal is obtained. A feedback control step includes obtaining a correction value by performing an arithmetic operation using the target value and the vibration peak value. A pilot fuel quantity is controlled according to the correction value. | 05-26-2016 |
| 20160186683 | METHOD AND APPARATUS FOR CONTROLLING INJECTOR DRIVING - A method for controlling a injector driving of the present invention may include the steps of: blocking fuel supply when it is a first start or first ignition-on of a vehicle, driving an injector for a predetermined time; and studying and controlling an opening time of the injector such that the opening time of the injector according to the properties of the injector follows a reference opening time. | 06-30-2016 |
| 20160195034 | ENGINE | 07-07-2016 |
| 20160201628 | Actuating Drive For An Injection Valve, And Injection Valve | 07-14-2016 |
| 20160252035 | FUEL INJECTION CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE | 09-01-2016 |
| 20160252064 | Fuel Injector | 09-01-2016 |
| 20170234260 | CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE | 08-17-2017 |
| 20190145335 | METHOD OF CONTROLLING A SOLENOID ACTUATED FUEL INJECTOR | 05-16-2019 |
| 20190145341 | Gasoline Particulate Reduction Using Optimized Port And Direct Injection | 05-16-2019 |
| 20220136453 | METHOD FOR OPERATING A TWO STROKE ENGINE - A method for operating the two stroke engine provides that the fuel valve is controlled after the starting process in at least a quasi-steady state such that, on the basis of uninterruptedly successive blocks of successive revolutions of the crankshaft, the fuel valve is opened and closed exactly once within each block. Each block includes from two to twenty revolutions of the crankshaft. The fuel valve is opened over a crankshaft angle (α) of more than 360° within one block in at least one operating state. A control device is provided for controlling the fuel valve. A quasi-steady state of the two stroke engine is a state in which the throttle element is adjusted by less than 10% of the maximum adjustment of the throttle element over a crankshaft angle (α) of 360°. | 05-05-2022 |
