Oil pressure control system for an automatic transmission system

Details Oil pressure control system for an automatic transmission system Oil pressure control system for an automatic transmission system

1975-07-30

1977-07-12

Scott, Samuel

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

B60K 4118

Patent

active

040346285

ABSTRACT:
An oil pressure control system for an automatic transmission system which includes a fluid torque converter, a transmission gear and friction engaging means adapted to be selectively supplied with line pressure for establishing a selected transmission engagement in said transmission gear, said friction engaging means being provided with a buffering accumulator which buffers its operating pressure, said accumulator comprising a fluid displacing element which is selectively supplied with different levels of oil pressure, preferably a torque converter pressure or a line pressure as a back pressure according to the operational condition of the oil pressure control system.

REFERENCES:
patent: 3146630 (1964-09-01), Ivey
patent: 3613484 (1971-10-01), Pierce et al.
patent: 3638771 (1972-02-01), Chana
patent: 3651714 (1972-03-01), Ohya et al.
patent: 3667323 (1972-06-01), Irie
patent: 3688608 (1972-09-01), Leach
patent: 3744348 (1973-07-01), Lemon

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