Electric vehicle drive train with direct coupling transmission

Title: Electric vehicle drive train with direct coupling transmission

Full Record
Similar

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

Inventors:

Tankersley, Jerome B. ^[1]; Boothe, Richard W. ^[2]; Konrad, Charles E. ^[2]

(Fredericksburg, VA)
(Roanoke, VA)

Issue Date:: 1995-01-01

OSTI Identifier:: 869810

Assignee:: General Electric Company (Fairfield, CT) IDO

Patent Number(s):: US 5403244

Contract Number:: AC07-90ID13019

Research Org:: Ford Motor Co

Country of Publication:: United States

Language:: English

Subject:: electric; vehicle; drive; train; direct; coupling; transmission; motor; associated; speed; sensor; operable; reduction; mode; coupled; controller; responsive; operating; below; predetermined; value; reduces; regeneratively; braking; changing; increased; preferably; single; stage; planetary; gearbox; vehicle drive; direct coupled; speed sensor; speed reduction; electric vehicle; electric motor; predetermined value; single stage; planetary gear; motor speed; drive train; direct coupling; /477/180/

Full Text
File size N/AView Full Text

Similar records in DOepatents and OSTI.GOV collections:

Electric vehicle drive train with direct coupling transmission

Patent Tankersley, J.B. ; Boothe, R.W. ; Konrad, C.E.

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motormore »« less
April 1995
Electric vehicle drive train with contactor protection

Patent Konrad, Charles E. ; Benson, Ralph A.

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drivemore »« less
Full Text Available January 1994
Electric vehicle drive train with rollback detection and compensation

Patent Konrad, Charles E.

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehiclemore »« less
Full Text Available January 1994
Method and system for determining the torque required to launch a vehicle having a hybrid drive-train

Patent Hughes, Douglas A.

A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The systemmore »« less
Full Text Available April 2006
Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

Patent Tamai, Goro ; Zhou, Jing ; Weslati, Feisel

An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating costmore » for the hybrid electric vehicle.« less
Full Text Available September 2014