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Learning control system for controlling an automotive engine

  • US 4,737,914 A
  • Filed: 07/22/1985
  • Issued: 04/12/1988
  • Est. Priority Date: 07/27/1984
  • Status: Expired due to Fees
First Claim
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1. A system for updating coefficients of data for controlling an automotive engine by the data, comprising:

  • first means for determining that engine operation is in steady state with respect to first and second variables of engine operation and for producing an output signal when the steady state is determined;

    second means for producing new coefficients to be used for updating in the steady state of the engine operation;

    means comprising a table storing a plurality of said coefficients, the table comprising;

    a two-dimensional table storing said coefficients and having addresses dependent on the first variable; and

    a three-dimensional table storing said coefficients and having addresses dependent on the first variable and the second variable, the addresses of the three-dimensional table corresponding to a light load operating range of the engine; and

    third means responsive to the output signal of the first means for updating the coefficients by changing the coefficients stored in respective of the tables at an address corresponding to that at least one of said first and second variables of the first means prevailing in the steady state.

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