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Controller of work vehicle

  • US 20090029826A1
  • Filed: 12/02/2005
  • Published: 01/29/2009
  • Est. Priority Date: 12/07/2004
  • Status: Active Grant
First Claim
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1. A control apparatus for a work vehicle provided with a hydraulic stepless transmission for transmitting power from an engine mounted on a traveling body equipped with travel wheels, a speed change pedal for changing a speed change ratio of the hydraulic stepless transmission, a forward drive clutch and a reverse drive clutch that transmit a transmission drive output from the hydraulic stepless transmission to the travel wheels, and a brake for braking the travel wheels, the control apparatus comprising:

  • a transmission sensor that detects a step-on amount of the speed change pedal;

    a transmission output unit rotation sensor that detects a revolution speed of the output shaft; and

    a controller;

    wherein the control apparatus conducting control so that any one of the forward drive clutch and reverse drive clutch is engaged in response to a step-on actuation of the speed change pedal when the transmission drive output detected by the transmission output unit rotation sensor is no greater than a forward-reverse drive switching speed, and that the brake of the travel wheels is released when the activation of any of the forward drive clutch and reverse drive clutch is confirmed.

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