Shift control system for a hydromechanical tractor transmission

Details Shift control system for a hydromechanical tractor transmission Shift control system for a hydromechanical tractor transmission

1988-09-19

1990-01-09

Braun, Leslie A.

Machine element or mechanism

Gearing

Interchangeably locked

74335, F16H 506

Patent

active

048919993

ABSTRACT:
A shift control system for automatically shifting a multi-speed hydromechanical transmission one gear ratio at a time. The shift control system includes a cam element and an electronically controlled shifter assembly. The cam element is shiftable between distinct angular positions corresponding to different and distinct gear ratios for the transmission. The shifter assembly includes an actuator for imparting movement to the control element and a pair of stop assemblies. The stop assemblies limit angular movement of the cam element in incremental steps and, thereby, sequence transmission operation to one gear ratio at a time.

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patent: 4228694 (1980-10-01), Adam

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