Class / Patent application number | Description | Number of patent applications / Date published |
701106000 | Artificial intelligence (e.g., fuzzy logic) | 39 |
20080221781 | METHOD AND APPARATUS FOR CONTROLLING FUEL INJECTION IN A HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE - A multi-cylinder internal combustion engine is operative in a controlled auto-ignition combustion mode. The operation includes monitoring engine operation, and globally adapting fueling for all the cylinders based upon an engine intake mass air flow and an air/fuel ratio. The fueling for each cylinder is individually adapted based upon states of a combustion parameter for all the cylinders. | 09-11-2008 |
20080228379 | Method and device for detecting the fuel quality in an internal combustion engine - A device and a method for detecting the fuel quality in an internal combustion engine, especially a Diesel internal combustion engine. At particular operating states, in at least one cylinder, a start of injection is changed based on a starting value, and it is checked whether combustion takes place. Based on whether a combustion takes place or not, a combustion limit is ascertained and used as a measure for the quality of the fuel. | 09-18-2008 |
20080249697 | EMISSIONS SENSORS FOR FUEL CONTROL IN ENGINES - A system for controlling fuel to an engine to minimize emissions in an exhaust of the engine. There may be a controller connected to an actuator, for example a fuel control actuator, of the engine and to emissions sensors, such as an NOx and/or PM sensor, proximate to an exhaust output of the engine. The controller, for example a speed controller, may have an input connected to an output of a pedal or desired speed setting mechanism. A speed sensor at a power output of the engine may be connected to an input of the controller. | 10-09-2008 |
20080275626 | Vehicle and Control Method of Vehicle - In a vehicle equipped with both an engine and a motor as the driving power source, in the event of incompletion of learning a control demand for regulation of an idling rotation speed of the engine, intermittent operation prohibition control of the invention permits intermittent operation of the engine under the setting of a gearshift lever to a parking position. The intermittent operation prohibition control of the invention prohibits the intermittent operation of the engine, on the other hand, under the setting of the gearshift lever to a drive position. This arrangement avoids the continuous operation of the engine against the driver's expectation, while prohibiting the intermittent operation of the engine to ensure the opportunity of learning the control demand for regulation of the idling rotation speed of the engine. | 11-06-2008 |
20090030590 | FUEL INJECTION CONTROL APPARATUS DESIGNED TO COMPENSATE FOR DEVIATION OF QUANTITY OF FUEL SPRAYED FROM FUEL INJECTOR - A fuel injection control apparatus for an internal combustion engine is provided. A controller directs a fuel injector to spray a learning injection quantity of fuel and determines a resulting increase in speed of the engine. The controller determines the quantity of the fuel actually sprayed from the fuel injector based on the increase in speed of the engine and calculates a correction factor which compensates for a difference between the learning injection quantity and the actual injection quantity. The controller also determines a variation in load acting on a driving member of a torque transmission mechanism. When such a variation is great undesirably, the controller stops spraying the learning injection quantity. The controller may determine the increase in speed of the engine based on the degree of the variation in load. This ensures the accuracy in calculating the correction factor regardless of the variation in load. | 01-29-2009 |
20090030591 | Method and Device for Operating an Internal Combustion Engine Having Lambda Control - When the lambda controller is active (LAM ACT), in the cold operating state (STATE COLD) and in the presence of a predefined first condition, a present cold adaptation value (AD COLD AV) is determined and the present cold adaptation value (AD COLD AV) is assigned a valid cold adaptation value (AD COLD VLD). When the lambda controller is active (LAM ACT), in the warm operating state (STATE WARM) and in the presence of a predefined second condition, a present warm adaptation value (AD WARM AV) is determined and assigned a valid warm adaptation value (AD WARM VLD). In addition, the valid cold adaptation value (AD COLD VLD) is adapted in the presence of a predefined third condition as a function of a difference (AD WARM DELTA) between the valid warm adaptation value (AD WARM VLD) and the present warm adaptation value (AD WARM AV). | 01-29-2009 |
20090063022 | FUEL INJECTION SYSTEM WITH LEARNING CONTROL TO COMPENSATE FOR ACTUAL-TO-TARGET INJECTION QUANTITY - A fuel injection system designed to execute a learning operation to spray fuel through fuel injectors at each of given pressures of the fuel to determine the quantity of fuel sprayed actually from each of the fuel injectors (i.e., an actual injection quantity) into an internal combustion engine. The system calculates a deviation of each of the actual injection quantities from a target quantity to determine an injection correction value required to eliminate such a deviation. The system determines whether each of the injection correction values has an error or not and analyzes the mode in which the errors appear at the injection correction values to specify types of malfunction occurring in the system. The system relearns ones of the injection correction values as determined to have the errors. | 03-05-2009 |
20090082946 | FUEL INJECTION SYSTEM LEARNING AVERAGE OF INJECTION QUANTITIES FOR CORRECTING INJECTION CHARACTERISTIC OF FUEL INJECTOR - A fuel injection system designed to execute a learning operation to spray fuel through a fuel injector in a cycle to calculate an average of actual injection quantities for correcting an injection duration so as to minimize a deviation of the average from a target quantity. The system samples the actual injection quantities for a given period of time made up of a first and a second time section. In each of the first and second time sections, the system decides whether each of the actual injection quantities is suitable for use in calculating the average or not. When a desired number of the actual injection quantities decided to be suitable for the calculation of the average has been derived in the first time section, the system proceeds to the second time section to calculate the average. This enhances the accuracy in determining the quantity of fuel actually sprayed from the fuel injector. | 03-26-2009 |
20090099757 | INTERNAL COMBUSTION ENGINE SYSTEM, VEHICLE EQUIPPED WITH INTERNAL COMBUSTION ENGINE SYSTEM, AND CONTROL METHOD OF INTERNAL COMBUSTION ENGINE SYSTEM - Upon satisfaction of an idle learning condition, the internal combustion engine system of the invention successively performs learning of an idle control amount and learning of a most delayed angle control amount in this sequence. Upon satisfaction of a most delayed angle learning condition, on the other hand, the internal combustion engine system successively performs learning of the most delayed angle control amount and learning of the idle control amount in this sequence. This arrangement effectively reduces the total time required for completion of learning both the idle control amount and the most delayed angle control amount, compared with the conventional procedure of individually learning only one control amount corresponding to the satisfied learning condition. | 04-16-2009 |
20090118987 | Air-fuel ratio control apparatus - An air-fuel ratio control apparatus is applied to an internal combustion engine including a variable lift mechanism which changes a lift amount of an intake valve. An oxygen sensor, which outputs a signal indicating an oxygen concentration in exhaust gas, is provided downstream of an exhaust gas purification catalyst in an exhaust passage of the internal combustion engine. Air-fuel ratio control is performed to correct the fuel injection amount command value using the correction amount that is set based on the value output from the oxygen sensor. The relationship among the deviation of the correction amount from its reference value, the learned small lift value, the learned medium lift value, and the lift amount is learned. The learned deviation value is calculated based on the lift amount, using the learned relationship. Then, the fuel injection amount command value is corrected by the correction amount including the calculated learned deviation value. | 05-07-2009 |
20090132152 | FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM USING THE SAME - A fuel injector performs a main injection and a pilot injection prior to the main injection. A fuel injection controller detects an ignition timing of a fuel injected at the main injection, detects a driving condition of the internal combustion engine, and varies a pilot injection quantity of the pilot injection when the driving condition is stable. Furthermore, the controller detects a variation in ignition timing due to a variation in the pilot injection quantity, and learns the pilot injection quantity based on the variation in ignition timing due to the variation in the pilot injection quantity. | 05-21-2009 |
20090138181 | Fuel Injection Control Apparatus and Control Method of Internal Combustion Engine - A fuel injection correction coefficient for a first fuel injection valve and a second fuel injection valve with respect to a second fuel injection proportion in a second combustion is learned (step | 05-28-2009 |
20090177370 | ESTIMATION APPARATUS OF ALCOHOL COMPONENT AMOUNT IN FUEL - An estimation apparatus includes: a learning prohibition unit, configured to prohibit a learning unit from executing a learning control and retain a learning value, which is set just before prohibiting, as a fixed learning value which is a fixed value, when the fuel component amount estimation condition is satisfied; an air-fuel ratio correction amount computation unit, configured to compute a correction amount of the air-fuel ratio based on the feedback correction value and the fixed learning value, when the fuel component amount estimation condition is satisfied; an injection correction value change rate computation unit, configured to compute a change rate of the correction amount; an alcohol component correction value computation unit, configured to compute an alcohol component correction value based on the change rate; and an alcohol component amount estimation unit, configured to estimate an alcohol component amount in fuel based on the alcohol component correction value. | 07-09-2009 |
20090182487 | METHOD FOR ADJUSTING A LOOKUP TABLE AND A SYSTEM FOR CONTROLLING AN INJECTOR OF A CYLINDER IN A COMBUSTION ENGINE - A method for adjusting a lookup table that includes preset on-time values for an injector of an engine linked to fuel injection quantity values (δ). The following steps are executed in a situation when the output shaft of the engine is disconnected from the output shaft of the gearbox. A torque loss value (T | 07-16-2009 |
20090187330 | METHOD AND DEVICE FOR MONITORING AN ENGINE CONTROL UNIT - A method for plausibilization of an engine control function for an internal combustion engine includes: provision of injection parameters with which an injection of fuel into cylinders of the internal combustion engine is controlled on the basis of a torque that is to be realized; estimation of an actual torque of the internal combustion engine as a function of the injection parameters; and evaluation of the actual torque as a function of the torque that is to be realized, in order to plausibilize the engine control function. | 07-23-2009 |
20090192698 | METHOD FOR AUTOMATICALLY CONTROLLING A STATIONARY GAS ENGINE - A method for automatically controlling a stationary gas engine, where an engine speed control deviation is computed from a set engine speed (nSL) and an actual engine speed (nIST), and a set torque is determined as a correcting variable from the speed control deviation by a speed controller, where a set volume flow is determined as a function of the set torque to establish a mixture throttle angle (DKW | 07-30-2009 |
20090292452 | CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE - The control apparatus for an internal combustion engine includes a throttle opening learning value calculation unit for calculating a throttle opening learning value based on a deviation between a target throttle opening and a learning throttle opening, controls the throttle opening by a learning corrected target throttle opening obtained by correcting the target throttle opening with the throttle opening learning value, and updates and stores a real-time learning value and a long time learning value based on a magnitude relation between values respectively obtained by adding the long time learning value to throttle openings respectively indicated by two effective opening area axis points of a correlation map, between which lies an actual effective opening area, and an actual throttle opening when the throttle opening learning value composed of the real-time learning value and the long time learning value is to be calculated. | 11-26-2009 |
20090299611 | FUEL INJECTION CONTROLLER FOR INTERNAL COMBUSTION ENGINE - When a specified learning executing condition is established, a command furl injection quantity ratio (CFIQ-ratio) between two fuel injectors is compulsorily changed and a fuel injection quantity error of each fuel injector is learned respectively based on the CFIQ-ratio and an air-fuel-ratio feedback correction value. Based on the learning value of fuel injection quantity error, a fuel injection period of each fuel injector is respectively corrected, whereby each fuel injection quantity error of two fuel injectors is respectively corrected with respect to each cylinder. Thereby, a ratio of fuel injection quantity between two fuel injectors is accurately controlled. | 12-03-2009 |
20090319157 | LEARNING DEVICE AND FUEL INJECTION SYSTEM - A learning device changes each of multiple parameters to an increased side and to a decreased side with respect to a reference value set for each of the multiple parameters. The learning device calculates an approximation degree for each combination of the changes of the multiple parameters. The learning device performs update by using the combination of the changes providing the highest approximation degree among the approximation degrees as the combination of the updated reference values when an update end condition is not satisfied. The update end condition is a condition that the approximation degree at the reference values is higher than any of the approximation degrees after the change. The learning device decides the reference values as learning values of the multiple parameters when the update end condition is satisfied. | 12-24-2009 |
20090319158 | POWER OUTPUT APPARATUS, CONTROL METHOD THEREOF, AND VEHICLE - A power output apparatus for outputting power to a drive shaft includes a control unit that controls an internal combustion engine to perform an idle operation at a predetermined rotation speed, executes idle control amount learning, in which an idle control amount serving as a control amount obtained during the control is learned in accordance with establishment of a predetermined learning condition, within a range in which a rotation speed of the drive shaft is lower than a first speed, when the idle control amount learning is incomplete, and executes again the idle control amount learning within a range in which the rotation speed of the drive shaft is lower than a second speed, which is lower than the first speed, when the idle control amount learning is complete. | 12-24-2009 |
20100145597 | METHOD AND APPARATUS FOR CHARACTERIZING FUEL INJECTOR PERFORMANCE TO REDUCE VARIABILITY IN FUEL INJECTION - A method for equalizing fuel injector flows among a plurality of fuel injectors in an internal combustion engine including the steps of a) characterizing the electrical and/or mechanical performance of each fuel injector; b) imprinting characterization data on each fuel injector; c) reading the imprinted data into a control computer, preferably at the time of engine assembly or sub-assembly; and d) using the characterization data in an algorithm to adjust at least one electrical parameter such as hold current, peak current, and boost time for each fuel injector in an assembled engine during each fuel injection cycle. | 06-10-2010 |
20100191443 | METHOD FOR THE DETERMINATION OF AN INJECTED FUEL MASS OF A PREINJECTION - A method for the determination of a fuel mass of a pre-injection injected into at least one combustion chamber of an internal combustion engine by means of at least one injection under high pressure is characterized in that a corrective variable is determined for the pre-injection by means of a comparison between a measure for the actual amount of injected fuel of at least one test post-injection carried out for a predetermined target amount of a desired pre-injection due to a measure, and the measure for the target amount. | 07-29-2010 |
20100235072 | CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE - An evaporated fuel gas concentration learning section A | 09-16-2010 |
20100235073 | SBS LOGICAL BIO-DIESEL SENSOR - A logical sensor method is provided for internal combustion engines (Compression Ignited or Spark Ignited) based on a software algorithm (SBS). This algorithm identifies the mixture diesel/bio-diesel present in a vehicle's fuel tank and adapts the engine control strategy as a function of the fraction of FAME (Fatty Acid Methyl Esters) vegetal-based oil or oil produced from organic waste blended into a crude oil based diesel fuel (average chemical formula C | 09-16-2010 |
20100286894 | METHOD AND DEVICE FOR ADAPTING AN INJECTION CHARACTERISTIC CURVE - When the internal combustion engine is in an injection-free operating mode, a selected injector is open for injecting a small fuel amount, whereby at least one working cycle with injector control follows or precedes one cycle without control, a differential of two subsequent segment times of the cylinder associated with the selected injector or another variable, that reproduces a temporal crankshaft angle speed modification, is determined as a measurement value respectively for the cycle with and without control, and a relation is formed between the values of the cycles with or without control and used to correct the injection characteristic curve. The engine operates with active ignition and the value for the cycle with control is tested by taking into account ignition faults and the relation is only used to correct the curve if the value in the cycle with control significantly deviates from the one without control. | 11-11-2010 |
20100305835 | VARIABLE VALVE TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A variable valve timing control apparatus for an internal combustion engine having a crankshaft and a camshaft, the variable valve timing control apparatus including a hydraulic variable valve timing device, an intermediate lock mechanism, and an oil pressure control device. The control apparatus learns an intermediate lock position to obtain a learning value of the intermediate lock position when the intermediate lock mechanism locks the VCT phase at the intermediate lock position. The control apparatus computes an actual VCT phase based on the learning value of the intermediate lock position. The control apparatus computes a target VCT phase in accordance with an operational condition of the engine based on the learning value of the intermediate lock position. The control apparatus controls a control amount of the oil pressure control device such that the actual VCT phase becomes the target VCT phase. | 12-02-2010 |
20100305836 | FUEL INJECTION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINES - When performing a learning control of a fuel injection quantity, a fuel injection control apparatus adds a pilot fuel injection during the working state of a diesel engine when a learning data item (as a fuel injection amount correction value) is calculated per cylinder and fuel pressure. The apparatus compares, based on a combustion stroke of a target cylinder, a work load obtained during an ordinary fuel injection with a work load obtained during the pilot fuel injection. The apparatus calculates a learning data item for the target cylinder in order to correct an actual fuel injection quantity in the target cylinder with the learning data item so that the actual fuel injection quantity approaches a target fuel injection quantity. | 12-02-2010 |
20100312459 | INTERNAL COMBUSTION ENGINE CONTROLLER - A controller ( | 12-09-2010 |
20100324803 | DATA STORAGE DEVICE - Data indicating a sudden change in a bulk modulus of fuel and data indicating a usage state and a usage environment of an injector as of occurrence of an injection abnormality are stored in EEPROM mounted in the injector. Thus, it can be analyzed whether a cause of a defect such as the injection abnormality is use of inferior fuel based on the data related to the bulk modulus. In addition, it can be analyzed whether the cause of the defect such as the injection abnormality is a severe usage state and a severe usage environment based on the data related to the usage state and the usage environment. Thus, the data useful for analyzing the cause of the defect related to the fuel injection can be provided. | 12-23-2010 |
20100332110 | VARIABLE VALVE TIMING CONTROL APPARATUS AND METHOD FOR CONTROLLING VARIABLE VALVE TIMING DEVICE - A control device projects a lock pin to lock a VCT phase in an intermediate lock phase when a lock request occurs. A learning unit learns one of a most retarded phase, a most advanced phase, and an intermediate lock phase, as a reference phase. A control unit sets a target phase according to the reference phase and controls the control device. A monitor unit determines that the VCT phase has passed through the intermediate lock phase when the lock request occurs before completion of learning of the reference phase, and when a change in the VCT phase becomes greater than a threshold. The threshold is set to be greater than a sum of i) a design value of a phase difference between the intermediate lock phase and one of the most retarded phase and the most advanced phase and ii) a range of a product variation of the phase difference. | 12-30-2010 |
20110010078 | METHOD FOR THE SELF-LEARNING OF THE VARIATION OF A NOMINAL FUNCTIONING FEATURE OF A HIGH PRESSURE VARIABLE DELIVERY PUMP IN AN INTERNAL COMBUSTION ENGINE - A method for the self-learning of the variation of a nominal functioning feature of a high pressure pump in an internal combustion engine, which pump feeds fuel to a common rail and is controlled by a solenoid valve depending on an objective pressure inside the common rail and by using the nominal functioning feature which provides a delivery of fuel; in cut-off conditions of the engine, the method includes determining the value of the pressure leaks due to blow-by in the common rail; measuring the real pressure of the fuel inside the common rail; actuating the high pressure pump by controlling the solenoid valve with a predetermined closing angle; measuring the real pressure of the fuel inside the common rail again; determining a pressure deviation between the real pressure and an expected pressure of the fuel, and correcting the nominal functioning feature according to this deviation. | 01-13-2011 |
20110029220 | Intake system control device and method - an intake system control device includes: an acquisition section that acquires an operation condition of an engine; a steady-state value determination section that determines input and output steady-state values for an intake system of the engine based on the acquired operation condition; a gain determination section that determines a gain for a state space model; and a first input calculation section that calculates the intake system input from the acquired operation condition, the input steady-state value, the output steady-state value, and an intake system output by using the state space model having the determined gain. | 02-03-2011 |
20110035134 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus for a valve timing adjusting unit that adjusts valve timing of an engine. The control apparatus learns a reference position. The control apparatus computes an actual phase based on the learned reference position. The control apparatus computes a target phase based on an engine operational state. The control apparatus controls a hydraulic actuator to perform a phase control based on a difference between the target phase and the actual phase. The control apparatus determines whether the lock mechanism is under an abnormal state. When the control apparatus determines that the lock mechanism is under the abnormal state, the control apparatus is prohibited from performing the phase control that uses the reference position. | 02-10-2011 |
20110060515 | FUEL INJECTION DEVICE OF INTERNAL COMBUSTION ENGINE - A learning value for correcting a basic injection pulse such that an actual air-fuel ratio approximates to a target air-fuel ratio is calculated individually for each injection time number, which is decided according to an operation state of an engine. Thus, even if the number of occurrence(s) of invalid injection time changes with the injection time number and the invalid injection time changes with time, the appropriate learning value can be calculated for each injection time number. If injection from an injector is performed according to an injection pulse corrected with the learning value, the change of the invalid injection time can be absorbed and accuracy of a fuel injection quantity can be improved. | 03-10-2011 |
20110137541 | METHOD FOR REAL-TIME, SELF-LEARNING IDENTIFICATION OF FUEL INJECTORS DURING ENGINE OPERATION - A system and method for real-time, self-learning characterization of fuel injector performance during engine operation. The system includes an algorithm for an engine controller which allows the controller to learn the correlation between the fuel mass and pulse width for each injector in the engine in real time while the engine is running. The controller progressively perceives those pulse widths that achieve the desired fuel mass, while it can continuously adapt what it has learned based on various input variations, such as temperature and fuel rail pressure. The controller then uses the learned actual performance of each injector to command the pulse width required to achieve the desired quantity of fuel for each cylinder on each cycle. | 06-09-2011 |
20120245829 | Implementing a Computational Fluid Dynamics Model Using a Plurality of Computation Units - An apparatus includes a parallel computation unit including an input port and an output port and a one-dimensional computational fluid dynamics model. The input port is configured to sample at a time t | 09-27-2012 |
20130184974 | PROCESS FOR REDUCING ABNORMAL COMBUSTION WITHIN AN INTERNAL COMBUSTION ENGINE - The present invention provides a process for reducing abnormal combustion within a combustion chamber of the engine. The process can include simulation of the piston-driven internal combustion engine with oil droplets from the crankcase entering into the combustion chamber. In addition, the oil drops entering into the combustion chamber can be simulated as hot spots, as can simulation of fuel combustion within the combustion chamber. A probability of pre-ignition for at least a portion of the simulated hot spots as a function of the simulated fuel combustion and the simulated hot spots within the combustion chamber can be calculated and based on the calculation a combustion chamber parameter can be altered such that pre-ignition within the combustion chamber is reduced. | 07-18-2013 |
20140278010 | ENGINE KNOCK DETECTION SYSTEMS AND METHODS - A method includes: generating an indicator of present operating conditions of an engine; determining a first amount of noise based on vibration measured during a first plurality of combustion events of a cylinder; storing the first amount of noise and a first value of the indicator in a mapping based on a first engine speed and a first engine load; determining the first value of the indicator from the mapping based on a second engine speed and a second engine load; generating a trigger signal when the first value is different than a second value of the indicator; and, when the trigger signal is generated: determining a second amount of noise based on vibration measured during a second plurality of combustion events of the cylinder; and replacing the first amount of noise and the first value in the mapping with the second amount of noise and the second value. | 09-18-2014 |
20160097335 | IMethod and Device for Operating an Internal Combustion Engine - In a method and a device for operating an internal combustion engine, with at least one cylinder (Z | 04-07-2016 |