1
Michael Livshiz, Jeffrey M Kaiser, Bahram Younessi, Richard B Jess, Richard H Clutz: Engine torque control at high pressure ratio. GM Global Technology Operations, October 7, 2008: US07433775 (38 worldwide citation)

A method of controlling a torque output of an internal combustion engine includes determining a pressure ratio, determining a reference torque based on the pressure ratio and a torque request, calculating a desired throttle area based on the reference torque and regulating operation of the engine ba ...


2
Michael Livshiz, Jeffrey M Kaiser, Layne K Wiggins, John A Jacobs, Richard B Jess, James L Worthing: Torque based air per cylinder and volumetric efficiency determination. GM Global Technology Operations, October 21, 2008: US07440838 (26 worldwide citation)

A method of regulating operation of an internal combustion engine includes monitoring a manifold absolute pressure (MAP) of the engine, determining an engine torque based on the MAP, estimating an air per cylinder (APC) based on the torque, determining a volumetric efficiency of the engine based on ...


3
Mark D Carr, Joseph R Dulzo, Christopher R Graham, Richard B Jess, Ian J MacEwen, Onassis Matthews, Jeffrey A Sell, Michael J Svestka, Julian R Verdejo: Apparatus and methods for estimating vehicle fuel composition. General Motors Corporation, Christopher DeVries, January 9, 2007: US07159623 (14 worldwide citation)

A method of estimating composition of fuel in the fuel tank of a vehicle. A refuel event is detected. Fuel consumption is monitored during a plurality of stages after the refuel event. A plurality of fuel trim shift values are determined relative to the stages. The fuel trim shift values are used to ...


4
Wenbo Wang, Richard B Jess, David N Belton, Chris R Thelen, Jeffrey M Hutmacher, William Western, Ian J Macewen, Robert J Genslak: Fuel control for robust detection of catalytic converter oxygen storage capacity. September 14, 2010: US07793489 (13 worldwide citation)

An oxygen storage capacity (OSC) monitoring system for a vehicle having a catalytic converter includes an inlet oxygen sensor that generates an inlet sensor signal (ISS) based on an oxygen content of exhaust flowing into the catalytic converter. A control module receives the ISS, increases a closed ...


5
Stephen K Fulcher, Richard B Jess, Patrick L Risse, Stuart R Smith, James A Eng: Fuel control compensation for secondary air system flow variation. General Motors Corporation, Christopher DeVries, September 26, 2006: US07111454 (8 worldwide citation)

An engine control system and method maintains an optimum exhaust fuel to air ratio in an internal combustion engine. A secondary air injection (SAI) pressure is measured in an SAI system. The SAI pressure measurement is converted into an SAI flow value. A fuel compensation value is obtained based on ...


6
Igor Anilovich, Jeffry A Helmick, Richard B Jess, John W Siekkinen, Christopher E Whitney, Robert C Simon Jr: Post oxygen sensor performance diagnostic with minimum air flow. December 27, 2011: US08086392 (7 worldwide citation)

An engine control system includes an oxygen (O2) sensor diagnostic module that diagnoses an O2 sensor and requests a minimum air per cylinder (APC). A throttle actuator module controls a throttle to adjust a mass air flow based on the minimum APC.


7
Michael Livshiz, Jeffrey M Kaiser, Richard B Jess, Michael J Pitsch, Michael L Waterman, Pahngroc Oh: System and method for securing engine torque requests. November 26, 2013: US08594904 (7 worldwide citation)

A control system for an engine includes an engine torque request module, an engine torque response module, a torque command limit module, and an actuation module. The engine torque request module determines an engine torque request based on (i) an engine power request and (ii) a desired engine speed ...


8
Wenbo Wang, Richard B Jess, Lyle E Hamilton, Daniel G Bolstrum, Matthew J Roelle, John F Van Gilder, David N Belton, Richard W Amann, Fang Cheng J Fu: Method for on-board diagnosis of cold start emissions reduction control strategy. General Motors Corporation, Christopher DeVries, March 22, 2005: US06871136 (7 worldwide citation)

A method and control system for verifying cold start emissions reduction control in a vehicle using an internal combustion engine utilizes measured engine speed and commanded ignition timing to calculate an estimated actual engine-out thermal energy flow. An expected thermal energy flow is calculate ...


9
Chuan He, Richard B Jess, Jay Tolsma, GuoJun Shi, Jose L DeLeon, Kouji Sakumoto: Diesel oxidation catalyst (DOC) temperature sensor rationality diagnostic. GM Global Technology Operations, June 16, 2009: US07546761 (4 worldwide citation)

A temperature sensor rationality control system for an exhaust treatment system having an oxidation catalyst includes an oxidation catalyst inlet temperature sensor that generates an inlet temperature signal and an oxidation catalyst outlet temperature sensor that generates an outlet temperature sig ...


10
Richard B Jess, Paul A Bauerle, Christopher E Whitney, James L Worthing, Michael L Kociba: Negative wheel slip control systems and methods. November 13, 2012: US08311718 (4 worldwide citation)

An engine control system comprises a derivative module and a slip remediation module. The derivative module determines a mathematical derivative of a driven wheel speed of a vehicle. The slip remediation module, when the mathematical derivative is more negative than a predetermined deceleration, at ...