Marc Terry Davis

US Patent:

55326714, Jul 2, 1996

Filed:

Sep 2, 1994

Appl. No.:

8/300249

Inventors:

Michael S. Bachman - New Boston MI
Marc R. Davis - Dearborn MI

International Classification:

B60Q 100

US Classification:

340438

Abstract:

The accelerator command signal from an accelerator pedal sensor of an electric vehicle is mapped to a generally lower value in view of a reduced state of charge of the traction battery of the vehicle. The mapping requires the driver of the vehicle to depress the accelerator pedal farther to provide an equivalent accelerator command to the controller which controls the traction motor of the vehicle. The driver is thus given intuitive indication that the powertrain of his vehicle has reduced propulsive capability.

US Patent:

56194358, Apr 8, 1997

Filed:

Nov 13, 1995

Appl. No.:

8/558950

Inventors:

Rajiva Prakash - Westland MI
Marc R. Davis - Dearborn MI
Christos A. Kambouris - Northville MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

H02P 540

US Classification:

364578

Abstract:

Provided is a method and apparatus for simulating the behavior and operation of a three-phase induction machine. The present invention provides for a digital simulating device for simulating the behavior and operation of three-phase induction machines in accordance with selected parameters. There is further provided a computer modeling method for behavioral and operational analysis which utilizes blocks and super-blocks connected with signals as in physical systems. The modeling method incorporates an algebraicly simplified set of equations in stationary 2-axes reference frame.

US Patent:

55370110, Jul 16, 1996

Filed:

Dec 22, 1994

Appl. No.:

8/362345

Inventors:

Michael S. Bachman - New Boston MI
Michael H. Standing - Plymouth MI
Marc R. Davis - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

H02P 154

US Classification:

318 99

Abstract:

An invention is disclosed which promotes even wear within a multiple-motor drivetrain. In one embodiment of the invention, a vehicle drivetrain includes two motors. The total torque to be provided by the motors is partitioned between the motors such that the total efficiency of the drivetrain is maximum. Such partitioning usually involves providing more torque from one motor than from the other. The motor selected to provide the greater torque does so until a predetermined number of differential torque-hours are accumulated between the two motors. The other motor is then selected to provide the greater torque, again until a predetermined number of differential torque-hours are accumulated. Excessive wear of one portion of the driveline is thus prevented.