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Title: Two-speed transaxle

Abstract

Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.

Inventors:
 [1]
  1. (Northville, MI)
Issue Date:
OSTI Identifier:
864029
Patent Number(s):
4296650
Assignee:
Eaton Corporation (Cleveland, OH) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
two-speed; transaxle; disclosed; drive; assembly; 10; electrically; powered; vehicle; 12; 16; transmission; 40; axle; differential; 46; disposed; unitary; housing; 38; oil-cooled; prime; mover; electric; motor; 14; driving; input; shaft; 42; adapter; 24; supporting; hydraulic; 172; providing; pressurized; oil; flow; cooling; lubricating; operating; clutch; 84; brake; 86; shift; ratios; allows; supported; positions; spring-applied; locks; low-speed; ratio; fail; pump; driven; 212; independent; transaxle housing; unitary housing; adapter assembly; speed ratio; assembly allows; electrically powered; prime mover; housing assembly; electric motor; input shaft; transmission input; two-speed ratios; two-speed transmission; axle differential; powered vehicle; oil flow; oil-cooled prime; providing pressurized; drive assembly; pressurized oil; low-speed ratio; drive axle; speed ratios; /475/188/192/

Citation Formats

Kalns, Ilmars. Two-speed transaxle. United States: N. p., 1981. Web.
Kalns, Ilmars. Two-speed transaxle. United States.
Kalns, Ilmars. Thu . "Two-speed transaxle". United States. https://www.osti.gov/servlets/purl/864029.
@article{osti_864029,
title = {Two-speed transaxle},
author = {Kalns, Ilmars},
abstractNote = {Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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