High reduction transaxle for electric vehicle

Details High reduction transaxle for electric vehicle High reduction transaxle for electric vehicle

1985-01-28

1987-10-27

Braun, Leslie

Machine element or mechanism

Elements

Gear casings

74768, F16H 3708

Patent

active

047021250

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.

REFERENCES:
patent: 3815445 (1974-06-01), Gorrell et al.
patent: 3863524 (1975-02-01), Mori et al.
patent: 4056988 (1977-11-01), Kubo et al.
patent: 4296650 (1981-10-01), Kalns
patent: 4434680 (1984-03-01), Riediger et al.
patent: 4479404 (1984-10-01), Stockton
patent: 4509389 (1985-04-01), Vahratian et al.
patent: 4528869 (1985-07-01), Kubo et al.
"A State of the Art DC Propulsion System", Electric Vehicle Council, Kelledes, W., 10/4/83.

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