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Test apparatus and method for an engine mounted fuel pump

  • US 4,206,634 A
  • Filed: 09/06/1978
  • Issued: 06/10/1980
  • Est. Priority Date: 09/06/1978
  • Status: Expired due to Term
First Claim
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1. Apparatus for testing the fuel pump of an internal combustion engine equipped with a pressure-time type fuel supply system wherein the engine speed may be controlled by adjusting the pressure of fuel supplied to the engine through the fuel supply system, comprising(a) fuel inlet means adapted for fluid connection with the engine fuel pump for receiving the total fuel output of the fuel pump while the pump remains mounted on and mechanically driven by the engine;

  • (b) fuel outlet means fluidically connected with said fuel inlet means and adapted for fluid connection with the fuel supply system for supplying at least a portion of the fuel output of the engine fuel pump back to the fuel supply system for combustion in the engine;

    (c) pressure regulator means fluidically connected with said fuel inlet means and said fuel outlet means for selectively regulating the pressure of the fuel supplied to said outlet means to cause the engine to drive selectively the fuel pump at each one of a plurality of predetermined speeds; and

    (d) sensing means for measuring the delivery characteristics of the fuel pump at each of the plurality of predetermined speeds at which the fuel pump is driven.

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