Gear shifting engagement shock control system

Details Gear shifting engagement shock control system Gear shifting engagement shock control system

1978-04-26

1980-09-30

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

B60K 4106, B60K 4108, B60K 4110

Patent

active

042248426

ABSTRACT:
To control shifting shock upon starting of a stopped vehicle with an automatic transmission and when shifting from neutral into a drive gear (first, or reverse), a signal representative of transmission input speed (therefore equally representative of engine output speed) is used, twice differentiated, to control a shift-shock control system when shifting between neutral and a drive gear. When the vehicle is moving above a predetermined speed, e.g. 7 km/h, the automatic shock control system is controlled by a twice differentiated signal derived from the output of the transmission and when shifting is to be commanded between first and second, and second and third (or other gears), respectively.

REFERENCES:
patent: 3688609 (1972-09-01), Friedline
patent: 3713355 (1973-01-01), Wakamatsu et al.
patent: 3719096 (1973-03-01), Sprague et al.
patent: 3747438 (1973-07-01), Toyoda et al.
patent: 3750495 (1973-08-01), Ito et al.
patent: 3752011 (1973-08-01), Casey et al.
patent: 3942393 (1976-03-01), Forster et al.
patent: 4073203 (1978-02-01), Wurst et al.

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