Accumulator/friction element arrangement for automatic transmiss

Details Accumulator/friction element arrangement for automatic transmiss Accumulator/friction element arrangement for automatic transmiss

1988-10-31

1989-09-19

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4116

Patent

active

048670146

ABSTRACT:
The stroking order of the band brake servo piston and the accumulator piston are reversed under high and low transmission loads, therefore reversing the pressure modifying effects provided by the same. This is achieved by selecting the various areas and springs which determined the resistance against which the piston must stroke under high and low load conditions (wherein the level of the line pressure changes), and the forces which drive the pistons against the resistances.

REFERENCES:
patent: 3623382 (1971-11-01), Chana
patent: 3842693 (1974-10-01), Oberpichler
patent: 3902380 (1975-09-01), Murakami
patent: 4347764 (1982-09-01), Lauven
patent: 4428258 (1984-01-01), Kubo et al.
patent: 4722250 (1988-02-01), Sumiya et al.
patent: 4722251 (1988-02-01), Sumiya et al.
patent: 4729265 (1988-03-01), Sugano
patent: 4776240 (1988-10-01), Miki

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