Timothy J Hartrey

7228249, Jun 5, 2007

Nov 19, 2002

10/299293

Timothy John Hartrey - Brighton MI, US

General Motors Corporation - Detroit MI

G06F 17/00

702116, 702 94, 702104, 702107, 702150, 701 34

Methods and apparatus are provided which generate an error signal if a sensor is either anticipated to fail or fails. At least two sensors provide input signals having magnitudes that approximately correspond to a sensed event. A processor calculates an actual correlation error for the two signals. A processor then further calculates an estimated new correlation value based on the difference of a stored initial correlation value and the actual correlation error. After a predetermined number of estimated correlation values are calculated, the error signal is generated if the difference between an estimated correlation value and the actual correlation error exceeds a predetermined threshold.

7254472, Aug 7, 2007

Feb 9, 2005

11/054678

John F. Larsen - Campbellcroft, CA
Gene Dimarco - Cobourg, CA
Timothy J. Hartrey - Brighton MI, US
Tom C. Ender - Behtany, CA

General Motors Corporation - Detroit MI

B60T 8/00
F02D 35/00

701 54, 477107, 701 53

A method of preventing undesirable vehicle behavior in a vehicle torque control system that includes determining an expected axle torque based on a vehicle speed, a powerplant profile, an accelerator pedal position and/or a cruise control signal. The method also includes estimating an actual axle torque of a powerplant based on a powerplant maximum torque, a throttle position and powertrain inefficiencies and converting the expected axle torque to an expected acceleration and the actual axle torque to an actual acceleration based on a wheel radius and a road load. The method further includes regulating a torque output of a powerplant when a rate-of-change in a difference between the expected acceleration and the estimated actual acceleration is greater than a first threshold.

7366597, Apr 29, 2008

Jul 22, 2005

11/187523

Timothy J. Hartrey - Brighton MI, US
Mark H. Costin - Bloomfield Township MI, US

GM Global Technology Operations, Inc. - Detroit MI

G01M 17/00
G11C 29/12

701 31, 701 35, 714722, 702 58

A vehicle having a system for validating a variable signal for input to a processor-performed function. An input module receives the signal. A processor tests first and second storage locations of a memory. After testing, the processor stores the signal in the first and second storage locations to obtain first and second stored values. The processor compares the first and second stored values and tests the first stored value for any corruption associated with receipt of the signal by said input module. The processor inputs the first and second stored values to first and second paths for performing the function to obtain two function results, and compares the results.

7593806, Sep 22, 2009

Jul 29, 2008

12/181410

Christopher E. Whitney - Highland MI, US
Louis A. Avallone - Milford MI, US
Timothy J. Hartrey - Brighton MI, US
Mark D. Carr - Fenton MI, US
Vivek Mehta - Bloomfield Hills MI, US
Bahram Younessi - Farmington MI, US

F02D 41/00

701104

A control system for a vehicle includes a first counter that indicates a first count of a number of cylinders of an engine of the vehicle that are fueled. A second counter indicates a second count of the number of cylinders that are fueled. A control module determines a secure count based on the first count and the second count. The control module adjusts torque output of the engine based on the secure count.

7600161, Oct 6, 2009

Aug 13, 2004

10/918621

Mark H. Costin - Bloomfield Township MI, US
Timothy J. Hartrey - Brighton MI, US
Tyrus J. Valascho - Clarkston MI, US
Steven P. Sullivan - Ann Arbor MI, US
William Robert Mayhew - Ann Arbor MI, US
Ananth Krishnan - Ypsilanti MI, US
Jinchun Peng - Westland MI, US

GM Global Technology Operations, Inc. - Detroit MI

G06F 11/00

714100, 714720, 714722

A method of verifying the integrity of an arithmetic logic unit (ALU) of a control module includes inputting a first test value into one of a plurality of registers of the ALU and inputting a second test value into remaining registers of the plurality of registers. A first set of operations is performed between the one of the plurality of registers and each of the remaining registers to produce a first set of results. A fault is indicated when one of the first set of results varies from a first predetermined result.

7885746, Feb 8, 2011

Mar 24, 2006

11/389566

Ananth Krishnan - Ypsilanti MI, US
David A. Thatcher - Troy MI, US
Timothy J. Hartrey - Brighton MI, US

B60K 23/00

701 51, 180233

A transmission control system for a vehicle includes a first module that generates a first modified signal based on a first position of a driver input device and a second module that receives the first modified signal from the first module. The second module generates a second modified signal based on a second position of the driver input device and regulates operation of a transmission of the vehicle based on the first and second modified signals.

8050841, Nov 1, 2011

Oct 21, 2008

12/254926

Mark H. Costin - Bloomfield Township MI, US
Timothy J. Hartrey - Brighton MI, US
Layne K. Wiggins - Plymouth MI, US
Bryan D. Lehman - Fenton MI, US
Roberto De Paula - New Hudson MI, US
Joseph M. Stempnik - Warren MI, US

G06F 7/00

701 84, 701103, 701115, 123399, 123 9017, 123 9015, 123 9031

An air-per-cylinder (APC) security system for a vehicle comprises an APC determination module, an APC threshold determination module, and an APC diagnostic module. The APC determination module determines first and second APC values for first and second cylinders of an engine, respectively, based on mass airflow (MAF) into the engine. The APC threshold determination module determines an APC threshold based on the first APC value and a spark timing for the first cylinder. The APC diagnostic module selectively diagnoses a fault in the APC determination module when the second APC value is greater than a sum of the first APC value and the APC threshold.

8147378, Apr 3, 2012

Aug 20, 2008

12/194778

Christopher E. Whitney - Highland MI, US
Timothy J. Hartrey - Brighton MI, US
Todd R. Shupe - Milford MI, US
Ning Jin - Novi MI, US
Etsuko Muraji Stewart - Laingsburg MI, US
Richard B. Jess - Haslett MI, US

B60W 10/04

477115

An engine control system comprises a torque determination module, a limit determination module, a torque limit module, and a torque control module. The torque determination module determines a desired torque based on a desired engine speed. The limit determination module determines a torque limit based on one of an engine oil temperature and a transmission fluid temperature. The torque limit module determines a final torque based on the desired torque and the torque limit. The torque control module selectively determines a throttle area based on the final torque. A throttle valve is actuated based on the throttle area.