Automatic transaxle control system

Details Automatic transaxle control system Automatic transaxle control system

1980-08-11

1983-11-08

Staab, Lawrence J.

Machine element or mechanism

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

Preselected indexed position

74868, B60K 4110

Patent

active

044135360

ABSTRACT:
An automatic control system for a multiple ratio power transmission mechanism having a hydrokinetic torque converter and multiple ratio gearing, the speed ration of which is controlled by selectively engageable clutches and brakes, the control system including a timing valve circuit that is effective to establish optimum timing between the clutch and brake engagement and release pattern during ratio changes at various driving torques and at various magnitudes of transmission throttle valve pressures, the latter being an indicator of the operator's demand for driving torque.

REFERENCES:
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patent: 3327554 (1967-06-01), Searles
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patent: 3393585 (1968-07-01), Pierce
patent: 3400612 (1968-09-01), Pierce
patent: 3590663 (1971-07-01), Yamaguchi
patent: 3593599 (1971-07-01), Dach
patent: 3613484 (1971-10-01), Pierce et al.
patent: 3895542 (1975-07-01), Miyauchi
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patent: 4014223 (1977-03-01), Pierce
patent: 4065985 (1978-01-01), Taga
patent: 4106369 (1978-08-01), Taga
patent: 4263826 (1981-04-01), Hartz et al.
patent: 4313354 (1982-02-01), Iwanaga et al.
patent: 4314488 (1982-02-01), Lauven

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