Richard C Hart

US Patent:

7090048, Aug 15, 2006

Filed:

Sep 26, 2003

Appl. No.:

10/672199

Inventors:

William C. Albertson - Clinton Township MI, US
Richard W. Hart - Oakland Township MI, US
Aziz Bakar - Pontiac MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F01N 7/10
F01N 1/02
F02B 27/02

US Classification:

181240, 181237, 181254, 181250, 60312, 60323, 60324

Abstract:

A system for attenuating exhaust noise from an engine with a first group of active cylinders and a second group of deactivatable cylinders includes a first exhaust manifold connected to the first group of active cylinders and a second exhaust manifold connected to the second group of deactivatable cylinders. The second exhaust manifold is connected to the first exhaust manifold such that the second exhaust manifold acts as a resonator to attenuate sound from the first group of active cylinders when the second group of cylinders is deactivated.

US Patent:

20060064232, Mar 23, 2006

Filed:

Sep 23, 2004

Appl. No.:

10/948687

Inventors:

Nathan Ampunan - West Bloomfield MI, US
Richard Hart - Oakland Township MI, US
Brent Fetherolf - Royal Oak MI, US
Lynn Totten - Haslett MI, US

International Classification:

G06F 19/00
B60T 7/16

US Classification:

701115000, 701104000, 180167000

Abstract:

A system for implementing a method, as embodied in a computer usable medium, for controlling a performance of the vehicle. Weather data and a vehicle location is received. At least one ambient condition factor is determined based on the received weather data and vehicle location. At least one vehicle function is adjusted based on the determined at least one ambient condition factor.

US Patent:

55379702, Jul 23, 1996

Filed:

Apr 19, 1994

Appl. No.:

8/229875

Inventors:

Richard W. Hart - Warren MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16J 104

US Classification:

1231934

Abstract:

An apparatus and method for determining the optimum outer dimensions of a piston are disclosed. The piston has a crown with a ring belt and a skirt depending therefrom. Openings in the ring belt are configured to receive abradable rod members having end portions which extend radially outwardly from the piston surface. The radial positions of the outer end portions of the rod members are adjustable so as to locate the rod ends closely adjacent to the walls of an associated engine cylinder. Upon operation of the piston within the cylinder the rods are abraded to reveal the optimum clearance of the piston, relative to the cylinder wall, at that location.

US Patent:

51726262, Dec 22, 1992

Filed:

Aug 22, 1991

Appl. No.:

7/748732

Inventors:

Richard W. Hart - Warren MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16J 100
F16J 104
F02F 300

US Classification:

92177

Abstract:

A piston with a skirt shaped to accommodate distortion by changing thermal and load conditions is further modified to increase stability and broaden load distribution to reduce contact forces and wear by providing maximum radii lines on either side of a longitudinal thrust plant with reduced radius regions forming apparent concavities therebetween.