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Title: High reduction transaxle for electric vehicle

Abstract

A drivetrain (12) includes a transaxle assembly (16) for driving ground engaging wheels of a land vehicle powered by an AC motor. The transaxle includes a ratio change section having planetary gear sets (24, 26) and brake assemblies (28, 30). Sun gears (60, 62) of the gear sets are directly and continuously connected to an input drive shaft (38) driven by the motor. A first drive (78a) directly and continuously connects a planetary gear carrier (78) of gear sets (24) with a ring gear (68) of gear set (26). A second drive (80a) directly and continuously connects a planetary gear carrier (80) of gear set (26) with a sun gear (64) of a final speed reduction gear set (34) having a planetary gear carrier directly and continuously connected to a differential (22). Brakes (28, 30) are selectively engageable to respectively ground a ring gear 66 of gear set 24 and ring gear 68 of gear set 26.

Inventors:
 [1]
  1. Plymouth, MI
Issue Date:
Research Org.:
EATON CORP
OSTI Identifier:
866397
Patent Number(s):
4702125
Assignee:
Eaton Corporation (Cleveland, OH)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16H - GEARING
DOE Contract Number:  
AC07-84NV10366
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
reduction; transaxle; electric; vehicle; drivetrain; 12; assembly; 16; driving; ground; engaging; wheels; land; powered; motor; ratio; change; section; planetary; gear; sets; 24; 26; brake; assemblies; 28; 30; sun; gears; 60; 62; directly; continuously; connected; input; drive; shaft; 38; driven; 78a; connects; carrier; 78; 68; set; 80a; 80; 64; final; speed; 34; differential; 22; brakes; selectively; engageable; respectively; 66; speed reduction; ratio change; sun gear; electric vehicle; drive shaft; gear set; planetary gear; sun gears; change section; vehicle power; /475/

Citation Formats

Kalns, Ilmars. High reduction transaxle for electric vehicle. United States: N. p., 1987. Web.
Kalns, Ilmars. High reduction transaxle for electric vehicle. United States.
Kalns, Ilmars. Thu . "High reduction transaxle for electric vehicle". United States. https://www.osti.gov/servlets/purl/866397.
@article{osti_866397,
title = {High reduction transaxle for electric vehicle},
author = {Kalns, Ilmars},
abstractNote = {A drivetrain (12) includes a transaxle assembly (16) for driving ground engaging wheels of a land vehicle powered by an AC motor. The transaxle includes a ratio change section having planetary gear sets (24, 26) and brake assemblies (28, 30). Sun gears (60, 62) of the gear sets are directly and continuously connected to an input drive shaft (38) driven by the motor. A first drive (78a) directly and continuously connects a planetary gear carrier (78) of gear sets (24) with a ring gear (68) of gear set (26). A second drive (80a) directly and continuously connects a planetary gear carrier (80) of gear set (26) with a sun gear (64) of a final speed reduction gear set (34) having a planetary gear carrier directly and continuously connected to a differential (22). Brakes (28, 30) are selectively engageable to respectively ground a ring gear 66 of gear set 24 and ring gear 68 of gear set 26.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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