Vehicle clutch lube control system

Details Vehicle clutch lube control system Vehicle clutch lube control system

1985-05-02

1987-02-03

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192113B, F16D 1372, F16D 1374, F16D 2500

Patent

active

046404015

ABSTRACT:
A hydraulic control circuit controls flow of cooling or lube fluid to a pair of wet clutches, such as a traction clutch and a PTO clutch of an agricultural tractor. The control circuit intermittently and temporarily increases the lube flow as a function of the engagement states of the clutches. The control circuit includes a dual pilot-operated valve wherein one pilot is larger and receives clutch operating pressure. The smaller pilot receives system pressure via a check valve and fluid exits from the smaller pilot via a fluid restrictor.

REFERENCES:
patent: 2833385 (1958-05-01), Peterson et al.
patent: 3064779 (1962-11-01), Christenson
patent: 3351169 (1967-11-01), McIndoe
patent: 4520992 (1985-06-01), Sheffer
patent: 4540078 (1985-09-01), Wetrich
patent: 4557363 (1985-12-01), Golan

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