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Speed control system for a prime mover

  • US 5,789,822 A
  • Filed: 08/12/1996
  • Issued: 08/04/1998
  • Est. Priority Date: 08/12/1996
  • Status: Expired due to Term
First Claim
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1. A speed control system for a prime mover having a main drive shaft extending therefrom mounted for rotation at a controlled rotational speed;

  • said system comprising;

    a main control valve mounted for longitudinal movement to selectively vary the amount of fluid to said prime mover to control the rotational speed of said main drive shaft; and

    a governor operatively connected to said main control valve to control the movement of said main control valve in response to the rotational speed of said main drive shaft;

    said governor having hydraulic fluid means operatively connected to said main control valve to effect movement of said main control valve and including a hydraulic fluid pump driven from said main drive shaft for the operation of said fluid means, and electronic control means responsive to the rotational speed of said main drive shaft and transmitting output signals to said hydraulic fluid means to effect movement of said main control valve to a predetermined position;

    said governor including an electric generator having a generator shaft driven from said main drive shaft to supply electrical energy to said electronic control means.

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