Flow accumulator and clutch control system for automatic...

Details Flow accumulator and clutch control system for automatic... Flow accumulator and clutch control system for automatic...

2011-07-19

2011-07-19

Lorence, Richard M. (Department: 3655)

192 clutches and power-stop control

Clutches

Operators

C192S10900B, C060S564000

Reexamination Certificate

active

07980374

ABSTRACT:
The present invention provides a flow accumulator and a clutch control system for an automatic transmission. The flow accumulator includes a dual area piston disposed in a complementary dual diameter cylinder. The small end of the piston is pressurized by fluid from a spool valve which supplies and exhausts fluid to the clutch. The large end of the piston displaces fluid into the clutch when the small end is pressurized. A flow restricting orifice is disposed in parallel with the flow accumulator between the spool valve and the clutch and a pair of check valves control fluid flow into and out of the larger diameter cylinder.

REFERENCES:
patent: 3762906 (1973-10-01), Dahlman et al.
patent: 3905459 (1975-09-01), Liebich
patent: 5301783 (1994-04-01), Malloy

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