| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123679000 | Combined with engine condition responsive means | 16 |
| 20080283030 | METHOD TO DETERMINE A FUEL COMPOSITION - The invention concerns a method to determine the composition of a fuel from the components ethanol and gasoline of an internal combustion engine, wherein the fuel is supplied to the internal combustion engine by means of a fuel supply unit and via two fuel distributor rails; and the exhaust gas is discharged from the internal combustion engine by means of two exhaust gas manifolds of a first and a second exhaust gas system, which are separated from each other, wherein the first and second exhaust gas system have in each case at least one exhaust gas probe and wherein current changes in the ethanol content of the fuel are evaluated from the signal differences of lambda signals from the exhaust gas probes. With this method, a change in the ethanol content of the fuel can be detected, and an explicit condition for a change in fuel can be derived. Moreover, with the method, errors in the fuel-mixture can be distinguished from an altered fuel composition, which takes place after the tank has been filled (fueling). | 11-20-2008 |
| 20090133678 | METHOD FOR TAKING THE OUTGASSING OF FUEL FROM THE ENGINE OIL OF AN INTERNAL COMBUSTION ENGINE INTO ACCOUNT - The invention deals with a method for operating an internal combustion engine with engine oil as the lubricant, wherein a fuel mass flow outgassing from the engine oil is ascertained and is taken into account via a map-based pilot control during the metering of a quantity of fuel supplied to the internal combustion engine and wherein a fuel/air ratio supplied to the internal combustion engine is determined. Provision is made in the method according to the invention for a mass flow offset determined from the deviation of the fuel/air ratio supplied to the internal combustion engine from a nominal value to be taken into account when the metering of the quantity of fuel supplied to the internal combustion engine occurs during an effective duration of the map-based pilot control. The mass flow offset takes the deviation into account, which remained after the correction by a map-based pilot control of the quantity of fuel metered, on the basis of the modeled outgassing of fuel from the engine oil, and said mass flow offset balances the lambda controller in this way. The mass flow offset can by way of example have the effect of shortening the duration injection. The mixture deviations as a result of different boiling curves of the components of the fuel blend, which cannot be completely taken into account by the map-based pilot control under all operating conditions of the internal combustion engine, can in this way be compensated. | 05-28-2009 |
| 20140014081 | Diagnosis Method And Device For Operating An Internal Combustion Engine - A method is disclosed for performing an individual cylinder diagnosis with respect to pollutant emissions within a predefined operating range of an internal combustion engine, meeting at least one predefined condition. During the performing of the individual cylinder diagnosis, a forced activation, by means of which a predefined air/fuel ratio to be set is activated, is prescribed in a manner synchronous to the cylinder segment. The excitation is carried out such that each individual cylinder is subjected during subsequent working cycles to a mixture that is either richer or leaner in comparison to the predefined air/fuel ratio to be set due to the forced excitation. Depending on the forcibly activated air/fuel ratio to be set, the corresponding injection valves are actuated. | 01-16-2014 |
| 20150053190 | FUEL CONTROL FOR SPARK IGNITED ENGINE HAVING A PARTICULATE FILTER SYSTEM - A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine cylinder air-fuel is adjusted to allow soot to oxidize at an upstream particulate filter while exhaust gases are efficiently processed in a downstream catalyst. | 02-26-2015 |
| 20150068506 | MULTI-FUEL CONTROL SYSTEM AND METHOD - A system includes a controller operable to communicate with at least one sensor and an engine. The controller responds to one or more signals received from the sensor and influences engine operation based on determined engine operation threshold limits and information regarding a first fuel and a second, different fuel. The controller is configured to change or maintain engine operation based on the one or more signals compared to the threshold limits, and to change or maintain an engine fuel supply to control specific fuel consumption of at least one of the first and second fuels and to achieve values for the one or more signals in a determined range relative to the threshold limits. The one or more signals indicate an exhaust emissions parameter or at least one of pre-turbine temperature, fuel injection pressure, turbocharger rotational speed, peak firing pressure, rate of pressure rise, or knock intensity. | 03-12-2015 |
| 123680000 | Idling responsive | 2 |
| 20080295815 | Conservation of energy catalyst monitor field - A marine engine control system comprising a water jacket, an outlet sensor, and a control module. The water jacket directs a flow of water across a catalytic converter to cool the catalytic converter. The outlet sensor module measures an actual temperature of the water. The control module determines an expected temperature of the water when the catalytic converter is functional. | 12-04-2008 |
| 20100012105 | CONTROL METHOD OF EXHAUST EMISSION PURIFICATION SYSTEM AND EXHAUST EMISSION PURIFICATION SYSTEM - An exhaust emission purification system including a controller performing exhaust temperature rise control executing multistage delay injection control for raising the exhaust temperature, if the exhaust gas temperature is lower than a predetermined judgment temperature, and performing particulate matter combustion removal control executing post injection control, if the exhaust gas temperature becomes equal to or higher than the predetermined judgment temperature, when forced regeneration of a diesel particulate filter is carried out. Multistage delay injection control is forbidden when an idle operation state of an internal combustion engine is sustained for a predetermined judgment time and a power take-off is in operating state. The diesel particulate filter is thereby kept in a good state in a vehicle equipped for purifying particulate matter in exhaust gas by executing forced regeneration while avoiding variation in engine speed. | 01-21-2010 |
| 123681000 | Engine load responsive | 3 |
| 20090101125 | Method and Device for Controlling an Internal Combustion Engine When Changing Operating Modes - In a method for controlling an internal combustion engine ( | 04-23-2009 |
| 20130118461 | NOx FEEDBACK FOR COMBUSTION CONTROL - A method for controlling combustion in an engine is provided. The method comprises under a first condition, adjusting an EGR amount of a total cylinder charge in response to engine out NOx levels being below a first threshold. In this way, NOx levels may be used as feedback to control combustion stability. | 05-16-2013 |
| 20160069288 | METHODS AND SYSTEMS FOR IDENTIFYING INSUFFICIENT COMBUSTION BASED ON EXHAUST GAS CONTENT - Various methods and systems are provided for diagnosing a condition of a cylinder of an engine. In one example, a method includes adjusting recirculated exhaust gas responsive to a determined emission value and indicating insufficient combustion of one or more engine cylinders based on an amount by which the recirculated exhaust gas is adjusted. | 03-10-2016 |
| 123685000 | Starting or warmup responsive | 4 |
| 20090173323 | AIR-FUEL RATIO CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD OF THE SAME - An air-fuel ratio control system includes an air-fuel ratio sensor ( | 07-09-2009 |
| 20090217916 | ENHANCED CATALYST PERFORMACE BY ENGINE LOAD ADJUSTMENT - A method comprises operating an engine of a vehicle to provide output torque to an input of a torque converter, determining whether the engine is in a cold start condition, fixing an input shaft of a transmission when the engine is in the cold start condition, and coupling the input shaft of the transmission to an output of the torque converter. A control module comprises a combustion control module that operates an engine of a vehicle to provide output torque to an input of a torque converter, a NPD module that determines whether the engine is in a cold start condition, and a transmission control module that fixes an input shaft of a transmission when the engine is in the cold start condition, wherein the input shaft of the transmission is in communication with an output of the torque converter. | 09-03-2009 |
| 20100212644 | AIR-FUEL RATIO SENSOR EARLY ACTIVATION FEEDBACK SYSTEM AND METHOD - An air-fuel ratio sensor early activation feedback system and method includes an air-fuel ratio sensor for measuring an air-fuel ratio in an exhaust gas generated by an internal combustion engine and a heater for heating the air-fuel ratio sensor. A controller activates the heater prior to startup of the engine based on prior startup times for the engine. | 08-26-2010 |
| 20160010578 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE | 01-14-2016 |
| 123688000 | Inoperative sensor responsive | 1 |
| 20080196702 | DIAGNOSTIC METHOD AND CONTROL APPARATUS FOR GAS SENSOR - A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the interruption of the fuel supply; a response time period accumulating step of determining a response time period by accumulating a first time period that the sensor output value reaches from a first threshold value to a second threshold value after the detection of the interruption of the fuel supply, and a second time period that the sensor output value reaches from a third threshold value to a fourth threshold value after the detection of the restart of the fuel supply after the interruption of the fuel supply; and an abnormal state diagnosing section of determining an abnormal state of the gas sensor when the response time period is greater than a predetermined time period. | 08-21-2008 |
| 123689000 | Engine fluid or engine component temperature responsive | 1 |
| 20080210208 | Control Apparatus and Control Method for Internal Combustion Engine - A throttle operation is performed after an internal combustion engine is started. Then, temperature of a catalyst is obtained based on a signal output from a temperature sensor fitted to the catalyst. It is then determined whether the temperature obtained is equal to or higher than the activation temperature. If it is determined that the temperature of the catalyst has not reached the activation temperature, the throttle operation continues. On the other hand, if it is determined that the temperature of the catalyst is equal to or higher than the activation temperature, the non-throttle operation is performed instead of the throttle operation. | 09-04-2008 |
