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EP0091406A2
Expired / Lapsed
EP
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Motor vehicle transmission system
Assignee: Italdesign Giugiaro SpA
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Filing: 1983-03-23
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Granted: —
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Expires: 2003-03-23
Abstract
Abstract A transmission system for a motor vehicle which has a transversely-mounted front engine (1), a gear box (2) also mounted transversely, and a differential (3) connecting the secondary shaft of the gear box to the two half axles (5) of the front wheels, includes an epicyclic reduction gear train (14) housed in the differential housing and connecting the secondary shaft of the gear box (2) to the planet carrier (10) of the differential, and a device (28) for selectively rendering the said epicyclic reduction gear train operative and inoperative.
Inventors
- 👤 Giovanni Candellero
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 11:06
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/64; F16H48/00; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A transmission system for a motor vehicle which has a transversely-mounted front engine, a gear box also disposed transversely, and a differential connecting the secondary shaft of the gear box to the two half-axles of the front wheels, characterised in that this system includes an epicyclic reduction gear train (14) housed in the housing of the differential (3) and connecting the secondary shaft of the gear box to the planet carrier (10) of the differential, and a device (28) for selectively rendering the said epicyclic reduction gear train (14) operative and inoperative.
Claim 2
Dependent Claim
92 words
A transmission system for a motor vehicle which has a transversely-mounted front engine, a gear box also disposed transversely, and a differential connecting the secondary shaft of the gear box to the two half-axles of the front wheels, characterised in that this system includes an epicyclic reduction gear train (14) housed in the housing of the differential (3) and connecting the secondary shaft of the gear box to the planet carrier (10) of the differential, and a device (28) for selectively rendering the said epicyclic reduction gear train (14) operative and inoperative.
Claim 3
Dependent Claim
84 words
A transmission system according to Claim 1, characterised in that the said epicyclic gear train (14) includes an internally-toothed crown wheel (15) carried by a gear wheel (16) which meshes with a corresponding pinion (4) keyed onto the secondary shaft of the gear box, a sun gear (21) rotatably mounted relative to the planet carrier (10) of the differential (3) and relative to the said gear wheel (16), and a series of planets (19) carried by the planet carrier (10) of the differential (3).
Claim 4
Dependent Claim
86 words
A transmission system according to Claim 2, characterised in that the device for rendering the epicyclic gear train (14) operative and inoperative includes a movable member (30) selectively displaceable between a first operative position, in which it renders the sun gear (21) rigid with the fixed structure (9) of the gear box, and a second inoperative position in which it renders the sun gear (21) rigid with the said gear wheel (16) meshing with the pinion (4) keyed onto the secondary shaft of the gear box.
Claim 5
Dependent Claim
21 words
A transmission system according to Claim 3, characterised in that the said control device (28) is constituted by a synchroniser device.
Claim 6
Dependent Claim
37 words
A transmission system according to any one of the preceding claims, characterised in that the planet carrier (10) of the differential (3) carries a bevel gear (33) for transmitting drive to the rear axle of the vehicle.
References Cited (Backward Citations)
No citation records indexed.
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