Brevet : EP0901422 - GROUPE MOTOPROPULSEUR POUR VEHICULE A MOTEUR

Titre

GROUPE MOTOPROPULSEUR POUR VEHICULE A MOTEUR

N° et date de publication de la demande

EP0901422 - 17/03/1999

Type de la demande

A1

N° et date de dépôt

EP97926092.4 - 05/06/1997

N° et date de priorité

GB9611855 - 06/06/1996

Famille de brevets

WO9746406A1 ; GB2326858A ; ATE192709T1 ; EP0901422A1 ; DE69701979T2 ; US6030312A

Abrégé

PCT No. PCT/GB97/01515 Sec. 371 Date Nov. 30, 1998 Sec. 102(e) Date Nov. 30, 1998 PCT Filed Jun. 5, 1997 PCT Pub. No. WO97/46406 PCT Pub. Date Dec. 11, 1997A motor vehicle power train includes an engine (26) mounted longitudinally near the front of the vehicle and a transmission assembly (35) mounted intermediate front and rear differentials (17, 18). The transmission assembly is connected to the engine through an input propshaft (31), to the front differential through a front propshaft (37) and to the rear differential through a rear propshaft (38). The transmission assembly comprises a change speed transmission (28) which receives drive from the input propshaft and a hollow output shaft (49), a transfer transmission comprising a center differential (30) which is drivably connected to the hollow output shaft, has a front differential output shaft (54) for transmitting drive to the front propshaft and a rear differential output shaft (56) for transmitting drive to the rear propshaft, one of the differential output shafts (54) extending co-axially through the hollow output shaft. The transmission assembly also comprises an auxiliary output transmission (39) in the drive from the front differential output shaft to the front propshaft, the transmission assembly being arranged so that front and rear rotary outputs (37B, 38B) to the front and rear propshafts are axially offset from a rotary input (33) from the input propshaft, the front rotary output by an amount greater than that of the rear rotary output. The change speed transmission is conveniently adapted from a known automatic transmission for front wheel drive vehicles and can be connected using an input transmission (34).