Title:
TRANSMISSION SYSTEM FOR A HYBRID PROPULSION VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/168377
Kind Code:
A8
Abstract:
The transmission system comprises a mechanical gearbox (10) housed in a gear casing (16) and connecting means (12) for connecting the gearbox (10) to the electrical machine (ME) of the vehicle. The gearbox (10) comprises a single primary shaft (18) extending along a first axis (X), a plurality of driving gearwheels (34, 36, 38, 40, 42) carried by the primary shaft (18), and a coupling device (22) for connecting the primary shaft (18) for rotation with a crankshaft (24) of an internal combustion engine (MT) of the vehicle. The gearbox (10) further comprises a single secondary shaft (26) extending along a second axis (Y) arranged parallel to, and spaced from, the first axis (X), and a plurality of driven gearwheels (48, 50, 52, 54, 56) carried by the secondary shaft (26) and permanently meshing each with a respective driving gearwheel (48, 50, 52, 54, 56) to provide a respective gear. A first driving gearwheel (34) and an adjacent second driving gearwheel (36) form a double gearwheel (44) which is idly mounted on the primary shaft (18) and is connectable for rotation with this shaft through a first engagement sleeve (46). A first driven gearwheel (48) and an adjacent second driven gearwheel (50) permanently meshing with the first driving gearwheel (34) and with the second driving gearwheel (36),, respectively, are idly mounted on the secondary shaft (26) and are selectively connectable for rotation with this shaft by means of a second engagement sleeve (58). The connecting means (12) connect the electrical machine (ME) with the double gearwheel (44) and are arranged inside the gear casing (16).
Inventors:
CAVALLINO CARLO (IT)
ROSSI JACOPO (IT)
SCALICI GIORGIO (IT)
ROSSI JACOPO (IT)
SCALICI GIORGIO (IT)
Application Number:
PCT/IB2017/051844
Publication Date:
April 12, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
OERLIKON GRAZIANO SPA (IT)
International Classes:
B60K6/40; B60K6/36; B60K6/405; B60K6/48; B60K6/547; F16H3/089
Attorney, Agent or Firm:
RONDANO, Davide et al. (IT)
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