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Combustion prediction and discrimination apparatus for an internal combustion engine and control apparatus therefor

  • US 5,093,792 A
  • Filed: 05/31/1989
  • Issued: 03/03/1992
  • Est. Priority Date: 05/31/1988
  • Status: Expired due to Fees
First Claim
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1. A combustion prediction and discrimination apparatus for an internal combustion engine comprising:

  • (a) means for detecting a crank angle to output a crank angle signal;

    (b) means for detecting a cylinder pressure to output a cylinder pressure signal;

    (c) means for selecting said cylinder pressure signal in correspondence with said crank angle signal detected in a part of the whole period of a burning condition to be predicted and discriminated; and

    (d) means for predicting and discriminating the burning condition having a network constituted by multi-connected operational elements, such that each of said multi-connected operational elements;

    (i) multiply each of a plurality of inputs to each of said multi-connected operational elements by weight;

    (ii) add the multiplied results; and

    (iii) output a non-linear transformation of the sum,wherein said weight is determined to cause the final output of said network to correspond to the burning condition to be predicted and discriminated on the basis of the information of said selected cylinder pressure signal, whereby the burning condition is predicted and discriminated on the basis of the magnitude of the final output obtained by one part of said cylinder pressure signal in correspondence with said crank angle signal.

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