Jeffrey H Allen

US Patent:

6585621, Jul 1, 2003

Filed:

May 3, 2001

Appl. No.:

09/847080

Inventors:

Gregory Paul Matthews - West Bloomfield MI
Charles Henry Folkerts - Troy MI
Jeffrey James Allen - Brighton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16H 5924

US Classification:

477115, 477 21, 123198 F

Abstract:

A vehicle control system includes a variable displacement internal combustion engine, a transmission coupled to the variable displacement internal combustion engine, an intake manifold coupled to the variable displacement internal combustion engine, a throttle coupled to the intake manifold, an engine controller for controlling the throttle and the variable displacement internal combustion engine, and a transmission controller for controlling the transmission. The engine controller transfers a throttle position or load value to the transmission controller. This throttle position or load value is independent of the actual displacement of the variable displacement internal combustion engine.

US Patent:

7100565, Sep 5, 2006

Filed:

Feb 5, 2004

Appl. No.:

10/772845

Inventors:

Jeffrey J. Allen - Brighton MI, US
Alexander J. Roberts - Rochester MI, US
Thomas E. Bolander - Flint MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02D 7/00
F02D 41/04

US Classification:

123198F, 123399, 123481

Abstract:

A throttling and intake control system transitions between activated and deactivated modes in a displacement on demand engine. The throttling and intake control system includes an intake manifold pressure sensor that generates an intake manifold pressure signal and a controller that calculates a pressure window based on the manifold pressure and an engine speed signal. The controller transitions the engine from the activated mode to the deactivated mode when the measured intake manifold pressure is greater than the maximum limit of the pressure window. The controller transitions the engine from the deactivated mode to the activated mode when the intake manifold pressure is less than the lower limit of the pressure window.

US Patent:

7370521, May 13, 2008

Filed:

Oct 25, 2006

Appl. No.:

11/552610

Inventors:

Nils Sandmann - Gruenstadt, DE
Noboru Takahashi - Frankfurt am Main, DE
Douglas E. Trombley - Eppstein-Bremthal, DE
Jeffrey J. Allen - Bloomfield Hills MI, US
Dietmar Mueller - Riedstadt, DE
Thomas Wagner - Trebur, DE
Toshio Ichimasa - Zama, JP
Yoshiki Torii - Sagamihara, JP

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

G01M 15/00

US Classification:

73119A

Abstract:

A method of diagnosing a fuel injector of an engine system as contaminated is provided. The method comprises: recording a first fuel injection quantity; commanding a fuel rail pressure high; recording a second fuel injection quantity while the fuel rail pressure is high; and diagnosing the fuel injector as contaminated if the first fuel injection quantity is greater than the second fuel injection quantity.

US Patent:

20040069272, Apr 15, 2004

Filed:

Oct 10, 2002

Appl. No.:

10/268829

Inventors:

Jeffrey Allen - Brighton MI, US
Thomas Bolander - Flint MI, US

International Classification:

F02P005/00

US Classification:

123/406230, 123/481000

Abstract:

An engine control system in a vehicle including a variable displacement internal combustion engine, a speed sensor for detecting the speed of the variable displacement internal combustion engine, a controller for controlling the displacement of the variable displacement internal combustion engine, and where the controller varies the spark timing of the variable displacement engine based upon the detected speed during changes in the displacement of the variable displacement internal combustion engine.