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Title: Electric vehicle drive train with direct coupling transmission

Abstract

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. 6 figures.

Inventors:
; ;
Issue Date:
Research Org.:
Ford Motor Co
OSTI Identifier:
35055
Patent Number(s):
5,403,244
Application Number:
PAN: 8-016,798
Assignee:
General Electric Co., Fairfield, CT (United States) IDO; SCA: 330602; PA: EDB-95:064065; SN: 95001365533
DOE Contract Number:  
AC07-90ID13019
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 4 Apr 1995
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; ELECTRIC-POWERED VEHICLES; MECHANICAL TRANSMISSIONS; DESIGN; SPEED REGULATORS; ELECTRIC MOTORS; CONTROL EQUIPMENT; REGENERATIVE BRAKING

Citation Formats

Tankersley, J.B., Boothe, R.W., and Konrad, C.E. Electric vehicle drive train with direct coupling transmission. United States: N. p., 1995. Web.
Tankersley, J.B., Boothe, R.W., & Konrad, C.E. Electric vehicle drive train with direct coupling transmission. United States.
Tankersley, J.B., Boothe, R.W., and Konrad, C.E. Tue . "Electric vehicle drive train with direct coupling transmission". United States.
@article{osti_35055,
title = {Electric vehicle drive train with direct coupling transmission},
author = {Tankersley, J.B. and Boothe, R.W. and Konrad, C.E.},
abstractNote = {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. 6 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {4}
}