Apparatus for cooling clutches on a transmission shaft

Details Apparatus for cooling clutches on a transmission shaft Apparatus for cooling clutches on a transmission shaft

1998-01-21

2000-05-09

Marmor, Charles A

Planetary gear transmission systems or components

With lubricaton

19211335, 192 8715, 192 8717, F16H 5704

Patent

active

060596821

ABSTRACT:
A change-speed transmission in the power train of a motor vehicle has a planetary gearing and coaxial radially inner and outer disc clutches, namely a direct clutch and a reverse clutch. At least that clutch which is engaged (i.e., in use) is cooled by a lubricant for the planetary gearing, and the flow of coolant to the clutches is regulated by the axially movable pressure plate of one of the clutches. A jet pump conveys lubricant from the sump in the transmission case into an axially extending channel of the input shaft of the transmission, and such channel forms part of a system of passages which supply coolant at least to that clutch which is then in use to transmit torque from the input shaft to an output element of the transmission.

REFERENCES:
patent: 3301367 (1967-01-01), Yokel
patent: 3823801 (1974-07-01), Arnold
patent: 3834503 (1974-09-01), Maurer et al.
patent: 4010833 (1977-03-01), Brendel et al.
patent: 4905812 (1990-03-01), Shepperd
patent: 5169365 (1992-12-01), Friedmann
patent: 5667448 (1997-09-01), Friedmann

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