Automatic control device for the gearshift of industrial vehicle

Details Automatic control device for the gearshift of industrial vehicle Automatic control device for the gearshift of industrial vehicle

1989-04-25

1991-02-12

Diehl, Dwight

Machine element or mechanism

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

Preselected indexed position

74335, B60K 4106

Patent

active

049914650

ABSTRACT:
An automatic control device for the gearshift of industrial vehicles, in particular of the type suitable for automatically controlling a two-speed gearshift with engagement under torque actuated by a hydraulic motor. In order to avoid undesirable rapid decelerations of the vehicle while shifting from the second to the first gear, an element for delaying the engagement of the related gear is inserted between the electronic control system, generating the activation pulses for the solenoids which actuate the engagement of the clutches related to the two gears, and at least the control solenoid of the first gear. The delay is preferably preset according to the characteristics of the vehicle and of the gearshift.

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patent: 4702127 (1987-10-01), Cote
patent: 4730519 (1988-03-01), Nakamura et al.
patent: 4796485 (1989-01-01), Ebina
patent: 4845621 (1989-07-01), Kawata et al.

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