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Fuel pressure control method for an alternate-fuel engine

  • US 6,701,905 B1
  • Filed: 04/30/2003
  • Issued: 03/09/2004
  • Est. Priority Date: 04/30/2003
  • Status: Expired due to Term
First Claim
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1. A method of controlling a fuel pressure control mechanism in an alternate-fuel internal combustion engine where fuel is delivered to the engine for a duration that is scheduled to achieve a desired air/fuel ratio, the method comprising the steps of:

  • retrieving a calibrated base fuel pressure control value based on measured engine operating conditions;

    dynamically adjusting said base fuel pressure control value based on a deviation of an actual air/fuel ratio from said desired air/fuel ratio to form a fuel pressure command; and

    controlling said fuel pressure control mechanism in accordance with said fuel pressure command.

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