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Method for adjusting the fuel injection quantity of an internal combustion engine for regulating smooth operation

  • US 5,906,187 A
  • Filed: 06/04/1998
  • Issued: 05/25/1999
  • Est. Priority Date: 06/14/1997
  • Status: Expired due to Term
First Claim
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1. A method for adjusting the injection quantity of fuel in an internal combustion engine for regulating smooth operation comprising the following method steps:

  • (a) for each individual engine cylinder, recording a number of uneven operation smoothness values from the cylinder during an observation interval;

    (b) sorting the recorded uneven operation smoothness values individually for each cylinder according to their recorded magnitude;

    (c) determining, individually for each cylinder, whether the median uneven operation smoothness value according to the sorting is lower than, equal to, or higher than zero; and

    (d) increasing the fuel injection quantity individually for each cylinder if the median uneven operation smoothness value is lower than zero, or reducing the fuel injection quantity if the median uneven operation value is higher than zero.

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