Electronic powershift control system for an implement transmissi

Details Electronic powershift control system for an implement transmissi Electronic powershift control system for an implement transmissi

1988-10-11

1990-04-03

Diehl, Dwight G.

Machine element or mechanism

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

Preselected indexed position

74335, 3644241, B60K 4102

Patent

active

049130048

ABSTRACT:
An electronic powershift control system for an implement transmission having a plurality of selectively operated electrically controlled hydraulic powershift clutches. The system includes a manually positionable gear selector connected to electrical control circuitry. The electrical control circuitry receives input shift signals from the gear selector indicative of the shift desired and, in response, produces output shift signals for operating various hydraulic powershift clutches over a predetermined time to effect the desired shift. The electrical circuitry further incorporates a feed back loop which allows the circuitry to monitor shift performance effected during the desired shift and, if necessary, adjust the predetermined time of powershift clutch operation the next time the same shift is selected by the operator.

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patent: 4791568 (1988-12-01), Hiramatsu et al.
patent: 4799158 (1989-01-01), Patil

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