Apparatus for detecting a crankshaft position at which maximum c

Details Apparatus for detecting a crankshaft position at which maximum c Apparatus for detecting a crankshaft position at which maximum c

1988-07-12

1990-11-13

Teska, Kevin J.

Boots, shoes, and leggings

123417, 123425, 36443108, F02P 514, G01N 700

Patent

active

049706675

ABSTRACT:
An apparatus for detecting a crankshaft angular position .theta..sub.pmax at which the cylinder pressure reaches its maximum level. The apparatus samples a cylinder pressure indication signal at a predetermined target crankshaft angular position and at crankshaft angular positions advanced and retarded by a predetermined number of degrees of crankshaft rotation so as to accumulate three sets of data. The sampled three sets of data are used to determine a binominal equation defining the cylinder pressure as a function of crankshaft angular position. The apparatus calculates a maximum cylinder pressure value and a corresponding crankshaft angular position .theta..sub.pmax from the determined binominal equation.

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