James F Hartz

US Patent:

8545367, Oct 1, 2013

Filed:

Jun 20, 2012

Appl. No.:

13/527953

Inventors:

James F. Hartz - Indianapolis IN, US
Nayan V. Patel - Indianapolis IN, US
Vernon D. Thompson - Brownsburg IN, US
Paul A. Richardson - Plainfield IN, US
Christopher A. Baker - Indianapolis IN, US
George S. Pelton - Indianapolis IN, US

Assignee:

Allison Transmission, Inc. - Indianapolis IN

International Classification:

B60W 10/02
F16H 3/72
F16H 47/04
F16D 33/00

US Classification:

477 5, 475 5, 475 83, 192 326

Abstract:

A hybrid system includes a hybrid module that is located between an engine and a transmission. The hybrid system includes an energy storage system for storing energy from and supplying energy to the hybrid module. An inverter transfers power between the energy storage system and the hybrid module. The hybrid system also includes a cooling system, a DC-DC converter, and a high voltage tap. The hybrid module is designed to recover energy, such as during braking, as well as power the vehicle. The hybrid module includes an electrical machine (eMachine) along with electrical and mechanical pumps for circulating fluid. A clutch provides the sole operative connection between the engine and the eMachine. The hybrid system further incorporates a power take off (PTO) unit that is configured to be powered by the engine and/or the eMachine.

US Patent:

46870717, Aug 18, 1987

Filed:

May 27, 1986

Appl. No.:

6/867222

Inventors:

James F. Hartz - Indianapolis IN
Rayman E. Bazilio - Indianapolis IN
Michael R. Ferguson - Brownsburg IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 1700

US Classification:

180 91

Abstract:

A mounting for the transmission of a track laying vehicle wherein the transmission is longitudinally installed and removed from a power-pack compartment in the hull of the vehicle. The mounting includes a pair of collars slidably disposed on bosses on opposite sides of the transmission case for movement between laterally inboard and outboard positions. As the transmission is pushed into the power-pack compartment, the collars are in the retracted positions. When the transmission achieves an installed position with the collars aligned on the sprocket axis of the hull, the collars are moved to the extended positions wherein an external bearing surface on each collar engages an internal cylindrical pilot surface on a web adapter rigidly attached to the adjacent hull wall. The transmission is supported at the sprocket axis through the collars.

US Patent:

47113286, Dec 8, 1987

Filed:

Dec 4, 1986

Appl. No.:

6/937836

Inventors:

Rayman E. Bazilio - Indianapolis IN
James F. Hartz - Indianapolis IN
Anthony R. Uliana - Brownsburg IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 5700
F16D 5702
F16D 3306
F16D 3300

US Classification:

188296

Abstract:

A hydrodynamic retarder has a centrally disposed chamber which is filled with hydraulic fluid and subjected to centrifugal forces. A valve mechanism, responsive to the operator, is opened by a control valve system when vehicle retarding action is requested to permit rapid filling of the retarder vane space from the centrally disposed chamber. The valve mechanism is also closed by the control valve system after a predetermined time. This accommodates fast filling of the retarder but does not permit air ingestion by the retarder. A passage, in the stationary housing portion of the retarder, is opened to the transmission pump circuit during retarding action to maintain the retarder pressure and fluid circulation for cooling. The central chamber has an air control valve to admit air to the chamber as the chamber empties of hydraulic fluid and to permit air exhaust therefrom when the chamber is refilled.

US Patent:

45483060, Oct 22, 1985

Filed:

Apr 30, 1984

Appl. No.:

6/605246

Inventors:

James F. Hartz - Indianapolis IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 1352

US Classification:

192 7028

Abstract:

A plate separator for a multiplate clutch includes a circular spine and integral bifurcations extending in opposite directions from the spine. The plate separator is disposed in an annulus defined by a pair of outer friction plates and an interposed inner friction plate. When the outer friction plates clamp the inner friction plate, the bifurcations flex at their junctures with the spine. When the inner friction plate is released, the bifurcations unflex to separate the outer plates from the inner plate.

US Patent:

45639132, Jan 14, 1986

Filed:

Jun 29, 1984

Appl. No.:

6/626441

Inventors:

James F. Hartz - Indianapolis IN
Harry E. Latshaw - Danville IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16H 5702

US Classification:

74606R

Abstract:

In a side-by-side engine and transmission assembly wherein the engine has a block defining a primary rotating group axis and the transmission has a drive output axis and a power input axis parallel thereto and laterally spaced therefrom, a connection between the engine and transmission includes a transfer case attached to the engine generally amidships thereof defining an engine power output axis parallel to and spaced from the primary rotating group axis, a pair of trunnions on the transfer case aligned on the engine power output axis, a pair of saddles on the transmission aligned on the transmission input axis, the trunnions being received in the saddles to connect the engine to the transmission with the engine power output and transmission power input axes coinciding, drive shaft means aligned on the coincident axes to conduct engine power from the transfer case to the transmission, and a torque reaction control connection between the engine and transmission remote from the coincident axes.

US Patent:

47667770, Aug 30, 1988

Filed:

Jun 5, 1986

Appl. No.:

6/874197

Inventors:

James F. Hartz - Indianapolis IN
Rayman E. Bazilio - Indianapolis IN
Glenn W. Adamson - Danville IN

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

F16H 5702

US Classification:

74606R

Abstract:

A mechanism for operatively connecting an engine and transmission within a ehicle. The mechanism includes a rotary cylinder-like structure 33 having spline lock elements adapted to mesh with spline lock elements carried by an end wall of the engine. A worm-worm wheel assembly or its equivalent is used to effect rotation of the cylinder; self-locking characteristic of the worm-worm wheel unit resists load forces tending to disturb the lock action. An annular housing structure is provided to seal the lock mechanisms from mud, snow, etc. in the ambient atmosphere.

US Patent:

42638267, Apr 28, 1981

Filed:

Mar 19, 1979

Appl. No.:

6/022047

Inventors:

James F. Hartz - Indianapolis IN
Reece R. Fuehrer - Danville IN
Elton L. Thompson - Indianapolis IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 2100

US Classification:

74868

Abstract:

A multispeed transmission having an automatic shift control system having an automatic shift valve which is biased for upshift by a force increasing with output speed of the transmission and is biased for downshift by a force increasing concurrently with torque demand, to provide upshifts at speeds increasing with torque demand and downshifts at lower speeds. The shift valve controls the supply of shift fluid pressure to the ratio-engaging devices to establish low and high ratio drives. A regulator valve increases the shift fluid pressure with an increasing lagging torque demand signal. A modulator valve is controlled by an engine fuel feed or throttle to provide a concurrent torque demand signal pressure concurrent with throttle movement for the shift valve. The lagging torque demand signal is more concurrent with engine torque and power, such as the gasifier pressure of a gas turbine engine, or the supercharger pressure of an internal combustion engine. The transmission is shifted immediately in response to torque demand, and the shift pressure is proportional to the engine torque and speed at the time of the shift.

US Patent:

47067853, Nov 17, 1987

Filed:

Nov 10, 1986

Appl. No.:

6/928861

Inventors:

James F. Hartz - Indianapolis IN

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16D 6514

US Classification:

188106F

Abstract:

A cross-drive transmission has a hydraulic brake apply system and a mechanical brake apply system actuated through the same rotary input shaft of the vehicle operator. Rotation of the input shaft rotates a cam which controls a brake control valve which causes a regulated brake apply pressure to be delivered to the hydraulic portion of the brake system for service brake actuation. The cam is moved angularly through a desired angular range which will normally deliver the maximum hydraulic pressure used to actuate the brakes. After the angle is achieved, further rotation of the input shaft causes the cam to enter a dwell phase which permits additional stroke of the mechanical brake apply system if required. This may be required at times because of inadequate hydraulic pressure available from a suitable hydraulic pressure source or the inability of the hydraulic brake apply system to achieve the required braking effort. The mechanical system is driven through a differential gear assembly with differential output members acting to drive the brake pack actuators.