Automatic lubricant flow increase valve

Details Automatic lubricant flow increase valve Automatic lubricant flow increase valve

1975-07-14

1976-12-07

Wyche, Benjamin W.

192 clutches and power-stop control

Elements

Lubricating, insulating, or cooling

74467, F16D 1372

Patent

active

039957276

ABSTRACT:
A lubricant valve for use in a control system for an automatic transmission including a shift valve adapted to change ratio in the transmission mechanism by exhausting a first friction device of pressure and engaging a second friction device with pressure. The lubricant valve is connected to the shift valve and to lubricant distributing ports in the device for conducting lubricating oil to the friction plates. The lubricant valve is connected to an exhaust conduit for the first friction device whereby when pressure is exhausted through the exhaust conduit, as initiated by the shift valve when the second friction device is to be engaged, the initial high value of pressure in the exhaust conduit acts on the lubricant valve to move same to a position to connect additional pressure momentarily to the lubricant distributing ports in the second friction device whereby temporarily a large flow of fluid is provided to said clutch plates to provide increased heat dissipation for same during engagement.

REFERENCES:
patent: 2833385 (1958-05-01), Peterson et al.
patent: 3017006 (1962-01-01), Dence et al.
patent: 3301367 (1967-01-01), Yokel
patent: 3651904 (1972-03-01), Snoy et al.

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