| Patent application number | Description | Published |
|---|
| 20080234103 | FUEL QUALITY INDICATION FOR ADAPTIVE TRANSMISSION CONTROL - A control system and method for adaptively controlling transmission ratio shifting in an electronically controlled transmission. A refueling event is detected. After the detected refueling event, fuel consumption is monitored for a predetermined period during which a change in composition of fuel to the engine reaches or approaches a steady state. During the period, the rate of adapting transmission shift controls is modified to respond quicker to the change in shift characteristics induced by differences in torque produced by the engine. Implementing this method can improve transmission shift quality while the quality of fuel reaching an engine is in transition. | 09-25-2008 |
| 20090064663 | METHOD AND APPARATUS FOR DETERMINING TEMPERATURE IN A GAS FEEDSTREAM - An internal combustion engine includes an exhaust gas feedstream flowing past a gas sensing device disposed therein. The gas sensor includes an integrated electrical heating element which provides a resistance indicative of its temperature. An unknown input observer is used to determine the exhaust gas feedstream temperature based on the heating element temperature. | 03-12-2009 |
| 20090064976 | LEARN CORRECTION FEATURE FOR VIRTUAL FLEX FUEL SENSOR - A system for estimating fuel concentration comprises an ethanol estimating module that generates an ethanol estimate based on baseline closed loop corrections (CLC). A fuel system module controls fuel to an engine and generates a fuel system error. The ethanol estimating module selectively adjusts the baseline CLC and the ethanol estimate based on the fuel system error. A method for estimating fuel concentration comprises generating an ethanol estimate based on baseline closed loop corrections (CLC); controlling fuel to an engine and generating a fuel system error; and selectively adjusting said baseline CLC and said ethanol estimate based on said fuel system error. | 03-12-2009 |
| 20090071447 | VIRTUAL FUEL SENSOR FOR DUAL FUEL TANK APPLICATIONS - A method comprises detecting a status of a transfer pump for transferring fuel between a first fuel source and a second fuel source; receiving a fuel trim value and a vehicle operating parameter; and calculating a fuel composition of one of the first fuel source and second fuel source based on the fuel trim value, the transfer pump status and the vehicle operating parameter. A control module comprises a secondary pump transfer module detecting a status of a transfer pump for transferring fuel between a first fuel source and a second fuel source; and a fuel composition estimation module in communication with the secondary pump transfer module, receiving a fuel trim value and a vehicle operating parameter, and calculating a fuel composition of one of the first fuel source and second fuel source based on the fuel trim value, the transfer pump status, and the vehicle operating parameter. | 03-19-2009 |
| 20090150057 | OXYGEN SENSOR HEATER CONTROL STRATEGY - A heating module for an oxygen sensor comprises an estimated mass module, a cumulative mass module, and a temperature control module. The estimated mass module determines an estimated mass of intake air to remove condensation from an exhaust system after startup of an engine. The cumulative mass module determines a cumulative mass of intake air after the engine startup. The temperature control module adjusts a temperature of an oxygen sensor measuring oxygen in the exhaust system to a first predetermined temperature after the engine startup and adjusts the temperature to a second predetermined temperature when the cumulative air mass is greater than the estimated air mass, wherein the second predetermined temperature is greater than the first predetermined temperature. | 06-11-2009 |
| 20100066097 | METHOD TO ESTIMATE THE OUTPUT CURRENT OF AN AUTOMOTIVE GENERATOR (ALTERNATOR) - A control system of a vehicle comprises a current estimation module, a current sensor, and a current diagnostic module. The current estimation module determines an estimated output current of a generator of the vehicle based on an engine speed when the generator is operating in a steady-state condition. The current sensor measures an output current of the generator. The current diagnostic module diagnoses a condition of the current sensor based on the estimated output current and the measured output current. | 03-18-2010 |
| 20100083936 | Target wheel position detection systems - A control module for a vehicle includes a time recording module that stores timestamps that correspond to each of N teeth of a target wheel of the vehicle in memory. N is an integer. A position module generates M angular positions based on the timestamps. M is an integer greater than one. Each of the M angular positions corresponds to a space between adjacent ones of the N teeth. A position estimator determines position of the target wheel based on the M positions. | 04-08-2010 |
| 20100088010 | METHOD AND CONTROL SYSTEM FOR CONTROLLING AN ENGINE FUNCTION BASED ON CRAKSHAFT ACCELERATION - A method and control system for controlling an engine includes an instantaneous crankshaft acceleration determining module determining an instantaneous crankshaft acceleration. An engine parameter adjustment module adjusts an engine parameter in response to the instantaneous crankshaft acceleration. | 04-08-2010 |
| 20100228462 | METHOD AND SYSTEM FOR DETERMINING ENGINE BRAKE TORQUE IN REAL TIME - A method and system for controlling an engine function includes a deflection determination module generating a clutch deflection signal. The system further includes an engine function module controlling an engine function in response to the clutch deflection signal. The clutch deflection signal may be generated by sensors associated with the transmission shaft such as within the clutch housing or the friction disk. | 09-09-2010 |
| 20110038394 | METHOD AND APPARATUS FOR DETERMINING TEMPERATURE IN A GAS FEEDSTREAM - An internal combustion engine includes an exhaust gas feedstream flowing past a gas sensing device disposed therein. The gas sensor includes an integrated electrical heating element which provides a resistance indicative of its temperature. An unknown input observer is used to determine the exhaust gas feedstream temperature based on the heating element temperature. | 02-17-2011 |
