Electronically controlled automatic transmission for vehicles

Details Electronically controlled automatic transmission for vehicles Electronically controlled automatic transmission for vehicles

1992-12-21

1994-10-04

Braun, Leslie A.

Machine element or mechanism

Gearing

Interchangeably locked

74473R, 74866, 477122, 477125, 475123, 475132, F16H 5900, B60K 2010, B60K 2004

Patent

active

053515706

ABSTRACT:
(1) Various gear states are selected by movement of a shift lever 2 in a longitudinal shift path 13 and the gear stage is automatically shifted from starting to the maximum gear stage in an automatic speed change position D, so that an operator can run a vehicle with increased safety and easy operation without operation of the shift lever 2. (2) When a push button switch 3 provided in the shift lever 1 is pressed during the automatic speed change running, the gear stage during the running is fixed, so that inadvertent automatic shift is prevented and an optimum speed stage is maintained when the work load on the vehicle's engine changes, for example when the vehicle encounters a slope or a change in load during in operation. (3) When the gear stage is fixed in the automatic speed change position D and the shift lever 2 is transversely moved in the transverse shift path 14, the operator can vary the stages while varying one stage a time with the operator's will. That is, the manual speed change or transmission can be selected regardless of the automatic speed change state. The operator can switch the transmission state to the automatic transmission state or the manual transmission state in accordance with various running states and operation states to thereby improve the operation efficiency of the operation vehicle.

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