Joel E Mowatt

US Patent:

6796546, Sep 28, 2004

Filed:

Jun 26, 2002

Appl. No.:

10/187273

Inventors:

Kevin R. Wayman - Greenwood IN
Drew A. Crafton - Mooresville IN
Joel E. Mowatt - Zionsville IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16K 326

US Classification:

251321

Abstract:

A valve assembly has a valve body with a bore formed therein. A valve spool is slidably disposed in the valve body. The valve spool has a plurality of valve lands that closely engage the valve bore to form substantially leak-free interfaces. The leading land has a diameter less than the land immediately adjacent thereto in a range of 0. 34 mm to 0. 17 mm, and a recess formed between the leading land and the first adjacent land. The recess has an inner diameter at least 0. 75 mm less than said diameter of said leading land.

US Patent:

7002267, Feb 21, 2006

Filed:

Feb 17, 2005

Appl. No.:

11/060083

Inventors:

James A. Raszkowski - Indianapolis IN, US
Edward L. Kaiser - Rochester Hills MI, US
Anthony P. Tata - Fenton MI, US
Kyle K. Kinsey - Fenton MI, US
Joel E. Mowatt - Zionsville IN, US
William S. Reed - Greenfield IN, US
Michael D. Foster - Carmel IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H02K 9/00

US Classification:

310 54, 310 52, 310 57, 310 89, 310254, 180 654, 180 656, 475 5

Abstract:

The present invention is drawn to a method and apparatus for cooling a hybrid transmission electric motor. More precisely, an annular chamber is formed between a housing for the electric motor and a transmission housing. Coolant is disposed in the annular chamber and is applied to the electric motor through a plurality of coolant apertures in the motor housing to cool the motor.

US Patent:

7002271, Feb 21, 2006

Filed:

Feb 22, 2005

Appl. No.:

11/063331

Inventors:

William S. Reed - Greenfield IN, US
Edward L. Kaiser - Rochester Hills MI, US
Joel E. Mowatt - Zionsville IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H02K 11/00

US Classification:

310 71, 180 652, 439 34, 475150

Abstract:

A preassembled wiring terminal subassembly for use in a hybrid electro-mechanical transmission includes a plurality of wires and a plurality of wire terminals each defining a respective attachment hole and being operatively connected to a respective one of the plurality of wires. The subassembly also includes a plurality of conductive rods each defining a hole, and a plurality of threaded fasteners each extending through the attachment hole of a respective wire terminal and through the hole of a respective rod. The terminals, rods, and threaded fasteners are sufficiently interconnected for movement as a unit during transmission assembly to facilitate the establishment of an electrical connection between a control unit and one or more motor/generators.

US Patent:

7129595, Oct 31, 2006

Filed:

Feb 22, 2005

Appl. No.:

11/063328

Inventors:

William S. Reed - Greenfield IN, US
James A. Raszkowski - Indianapolis IN, US
Edward L. Kaiser - Rochester Hills MI, US
Joel E. Mowatt - Zionsville IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02N 11/04

US Classification:

290 46, 174 50

Abstract:

An improved hybrid electro-mechanical vehicular transmission includes motor/generator modules assembled from like components. This is accomplished by providing “punch-out” tabs on the motor/generator module housing enabling the housing to be used on either the first or second motor/generator module within a hybrid electro-mechanical vehicular transmission, thus enabling like components to be used within both the first and second motor/generator module.

US Patent:

7150631, Dec 19, 2006

Filed:

Feb 22, 2005

Appl. No.:

11/062895

Inventors:

William S. Reed - Greenfield IN, US
Edward L. Kaiser - Rochester Hills MI, US
Joel E. Mowatt - Zionsville IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H01R 33/00

US Classification:

439 34, 439874

Abstract:

An electrical connector assembly for use in establishing electrical communication between a control module and a motor/generator in a hybrid electro-mechanical transmission includes an insulating wire isolator and nuts nonrotatably preassembled thereto. The electrical connector reduces the quantity of loose parts during transmission assembly. The nuts, being nonrotatably connected to the isolator, which in turn is affixed with respect to a motor housing, are able to accept torque from bolts without assisted retention.

US Patent:

7152724, Dec 26, 2006

Filed:

Feb 2, 2005

Appl. No.:

11/049626

Inventors:

William S. Reed - Greenfield IN, US
James A. Raszkowski - Indianapolis IN, US
Joel E. Mowatt - Zionsville IN, US
Bert D. Love - Brownsburg IN, US
Rick K. Daugherty - Clayton IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16H 57/02
F16H 57/10

US Classification:

1922195, 744115, 74606 R, 2940203, 29428

Abstract:

This invention relates to the housing of a hybrid electro-mechanical transmission consisting of park pawl system located in the end cover portion of the transmission housing. The end cover portion is configured to cover the park pawl system and allow access to the components of the park pawl system for assembly or service even as the end cover portion remains attached to the main housing of the transmission. An access cover and seal for the access opening in the end cover portion is also provided. The access opening is designed to be small enough so that the end cover portion can also provides structural support to a main housing portion during operation of the transmission. A method of selectively providing access to a park pawl system located in the end cover portion of a transmission housing is also provided.

US Patent:

7223202, May 29, 2007

Filed:

Feb 22, 2005

Appl. No.:

11/063329

Inventors:

Eric S. Tryon - Indianapolis IN, US
Joel E. Mowatt - Zionsville IN, US
Kenneth D. Schoch - Greenwood IN, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60W 30/20
F16D 3/14

US Classification:

477 5, 475 5, 192 5561, 192 7017, 192201, 192212, 192106 F

Abstract:

The present invention relates to a torsional damper for an electrically variable transmission. The torsional damper is equipped with a hydraulically actuable lock-out clutch to selectively directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. During higher speeds the centrifugal loading placed on oil in the torsional damper increases, which may cause the lock-out clutch to inappropriately engage. The present invention hydraulically balances the hydraulic actuator (or piston) driving the lock-out clutch to appropriately regulate lock-out clutch engagement.

US Patent:

7226384, Jun 5, 2007

Filed:

Feb 18, 2005

Appl. No.:

11/061106

Inventors:

Eric S. Tryon - Indianapolis IN, US
Joel E. Mowatt - Zionsville IN, US
James A. Raszkowski - Indianapolis IN, US
Richard L. Wagner - Quincy IN, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI
DaimlerChrysler AG - Stuttgart
DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

B60W 30/20
F16D 3/14

US Classification:

477 5, 475 5, 192 5561, 192 7017, 192201, 192212

Abstract:

The present invention relates to a torsional damper for an electrically-variable transmission. The torsional damper is equipped with a lock-out clutch to directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically-variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. The present invention also includes damper springs of variable rates to effectively attenuate distinctive or inconsistent torque fluctuations when the engine is operating in displacement-on-demand mode.