Harold Martin

US Patent:

49517732, Aug 28, 1990

Filed:

Jul 25, 1989

Appl. No.:

7/385321

Inventors:

David C. Poirier - Troy MI
Mark T. Matheny - Canton MI
Harold M. Martin - Southfield MI
Gerald J. Wroblewski - Plymouth MI
Robert C. Simon - Novi MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 3100

US Classification:

180197

Abstract:

The ratio air and fuel mixture delivered to the fueled cylinders of an engine of a vehicle is controlled while selective cylinders of the engine are unfueled to reduce engine torque output to inhibit excessive wheel spin during vehicle acceleration. The air/fuel ratio of the mixture delivered to the fueled cylinders is increased as cylinders are selectively unfueled to reduce engine torque output and power enrichment to the fueled cylinders is inhibited when any cylinders are unfueled to reduce engine torque output for traction control and for a time period after all cylinders are again fueled.

US Patent:

49381849, Jul 3, 1990

Filed:

Sep 21, 1989

Appl. No.:

7/410436

Inventors:

Harold M. Martin - Southfield MI
Peter R. Crawford - Northville MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16N 3100

US Classification:

123195C

Abstract:

In a transversely mounted engine, oil intake efficiency is improved by a sloped baffle which funnels the returning engine oil to the oil intake in the oil pan, a small clearance between the baffle and the pan to retard oil surge beyond the baffle, a dam adjacent the oil intake port to inhibit the formation of a vortex that draws air into the port, and optimum placement of the intake in the pan.

US Patent:

47459018, May 24, 1988

Filed:

Feb 24, 1987

Appl. No.:

7/017769

Inventors:

Mark G. Reifenberger - Grosse Pointe Park MI
David C. Poirier - Troy MI
Michael A. Davis - Pontiac MI
Harold M. Martin - Southfield MI
Gary J. Brand - Novi MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02P 515
F02D 4110

US Classification:

123416

Abstract:

An engine control normally effective for regulating the fuel and spark timing to provide substantially optimum engine performance. Periods of heavy operator loading are identified and integrated over time to define engine operating conditions for which engine protection concerns predominate. At such time, the normal controls are overriden to operate the engine at a reduced performance level, thereby to protect the engine from preignition damage.