×

Fuel control system for actuating injection means for controlling small fuel flows

  • US 4,530,332 A
  • Filed: 10/26/1983
  • Issued: 07/23/1985
  • Est. Priority Date: 10/26/1983
  • Status: Expired due to Fees
First Claim
Patent Images

1. A fuel control system for actuating injection means for controlling small fuel flows in a fuel injected engine having a plurality of cylinders comprising;

  • signal generating means responsive to a fuel demand condition of the engine for generating a demand signal proportional to the amount of fuel demanded by the engine;

    fuel pulse generating means responsive to said demand signal for generating fuel pulses for activating the injection means in a predetermined order of cylinder injection during each engine cycle according to the demands of the engine, said fuel pulses having a time width proportional to the amount of fuel to be injected into the engine;

    threshold means for generating a threshold signal indicating a small fuel flow demand for the engine;

    comparison means responsive to said demand signal and said threshold signal and operative for generating a pulse skipping signal when said demand signal is less than said threshold signal;

    counter means for counting said fuel pulses, said counter means operative to count to a predetermined number and reset said counter means to a beginning count value;

    means responsive to said beginning count value and said pulse skipping signal for generating a pulse skipping signal; and

    injection actuation means responsive to said fuel pulses and the absence of said pulse skipping signal for actuating the injection means and in the presence of said pulse skipping signal to skip actuating the injection means at a different time during each engine cycle in a predetermined order of skipping, opposite to said predetermined order of cylinder injection.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×