Automatic speed change control methods for self-movable vehicle

Details Automatic speed change control methods for self-movable vehicle Automatic speed change control methods for self-movable vehicle

1984-07-10

1986-09-30

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0073, 192 0076, 192 009, B60K 4128

Patent

active

046142584

ABSTRACT:
An automatic speed change control method for a self-movable vehicle wherein, during running of a self-movable vehicle of a type that a power of an engine is transmitted to driving wheels through a clutch and a finite-stage gear speed changer, a speed-change ratio is calculated from both an actual speed and an acceleration pedal stepping value, the clutch is disengaged after detecting the above speed change ratio having been equal to a next present speed-change ratio, next gears are meshed with a prescribed time delayed, characterized by that, only when the acceleration pedal stepping value is detected to be zero during running of the vehicle on a high-speed stage and at the same time the actual vehicle speed is larger than a prescribed preset vehicle speed at which a gear mode is to be changed to a low-speed stage, the gear mode is forcibly changed to the low-speed stage to enable an engine brake to function more effectively.

REFERENCES:
patent: 3881368 (1975-05-01), Furuhashi et al.
patent: 3903759 (1925-09-01), Hashimoto
patent: 4103764 (1978-08-01), Iijima
patent: 4350234 (1982-09-01), Suga et al.
patent: 4369676 (1983-01-01), Gaus
patent: 4393964 (1983-07-01), Kemper

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