1
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 ...


2
Michael Livshiz, Jeffrey M Kaiser, Christopher E Whitney, John A Jacobs, Richard B Jess: Engine torque control. December 21, 2010: US07856304 (1 worldwide citation)

A method of achieving a desired torque output of an internal combustion engine includes determining a first air-per-cylinder (APC) value based on a first APC relationship and determining a second APC value based on a second APC relationship. An APC error is determined based on the second APC value. ...


3
Kevin T Sharples, Mark H Costin, Timothy J Hartrey, Christopher E Whitney, Bahram Younessi, Weixin Yan, Jeffrey M Kaiser, Richard B Jess, Joseph M Stempnik, John A Jacobs, Jinchun Peng, Leonard G Wozniak, Vivek Mehta, Bruce A Rogers: Securing throttle area in a coordinated torque control system. May 22, 2012: US08181627 (1 worldwide citation)

An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum ...


4
Kelly T Jozefowicz, John A Jacobs: Engine movement detection systems and methods. July 31, 2012: US08234055

A control system for an internal combustion engine is provided. The control system includes an engine movement module that selects from N engine rotation modes based on camshaft movement and crankshaft movement, where N is an integer greater than two, and where at least one of the N rotation modes i ...


5
Walter M Lazar II, John A Jacobs: Integrated sensing unit and method for determining vehicle wheel speed and tire pressure. GM GLOBAL TECHNOLOGY OPERATIONS, Reising Ethington P C, April 17, 2018: US09944134

An integrated sensing unit and method that involves wirelessly transmitting tire pressure sensor readings and wheel speed readings to a control module in a vehicle. Sensor circuitry for a tire pressure monitoring (TPM) system can be used with an inertial measurement unit (IMU) in an integrated sensi ...


6
John A Jacobs, Kelly T Jozefowicz: Reverse engine rotation detection system. May 18, 2010: US07717102

A method of determining reverse engine rotation includes calculating a ratio of on time to off time of a camshaft position signal during camshaft rotation, determining whether a predetermined camshaft state has been entered based on said ratio, comparing the most recently determined camshaft state w ...


7
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. General Motors Corporation, Legal Staff, May 29, 2008: US20080121211-A1

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 ...


8
Michael Livshiz, Jeffrey M Kaiser, Christopher E Whitney, John A Jacobs, Richard B Jess: Engine torque control. General Motors Corporation, Legal Staff, May 29, 2008: US20080121212-A1

A method of achieving a desired torque output of an internal combustion engine includes determining a first air-per-cylinder (APC) value based on a first APC relationship and determining a second APC value based on a second APC relationship. An APC error is determined based on the second APC value. ...


9
John A Jacobs, Kelly T Jozefowicz: Reverse engine rotation detection system. Gm Global Technology Operations, Harness Dickey & Pierce, March 5, 2009: US20090063004-A1

A method of determining reverse engine rotation includes calculating a ratio of on time to off time of a camshaft position signal during camshaft rotation, determining whether a predetermined camshaft state has been entered based on said ratio, comparing the most recently determined camshaft state w ...


10
Kelly T Jozefowicz, John A Jacobs: Engine movement detection systems and methods. Gm Global Technology Operations, Harness Dickey & Pierce, August 27, 2009: US20090216420-A1

A control system for an internal combustion engine is provided. The control system includes an engine movement module that selects from N engine rotation modes based on camshaft movement and crankshaft movement, where N is an integer greater than two, and where at least one of the N rotation modes i ...