Misfire detection using a dynamic neural network with output fee

Details Misfire detection using a dynamic neural network with output fee Misfire detection using a dynamic neural network with output fee

1998-09-15

2000-10-17

McCall, Eric S.

Measuring and testing

Test stand

For engine

731173, G01D 1800

Patent

active

061314447

ABSTRACT:
A misfire detection apparatus and method for detecting misfire of an engine. The engine has an engine speed and a manifold absolute pressure. An engine signal preprocessing system is provided for determining: a fluctuation associated with the engine speed; an average associated with the engine speed; and an average associated with the manifold absolute pressure. A neural network determines a firing event signal based upon: the determined engine speed fluctuation; the determined engine speed average; and the determined manifold absolute pressure average. A misfire decision determinator detects a misfire of the engine based upon the determined firing event signal. A preferred embodiment also includes a dynamic neural network system with global output feedback.

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NASA's Jet Propulsion Laboratory, Pasadena, California, "Neuroprocessor for Detecting Misfire in an Automotive Engine", NASA Tech Briefs, Dec. 1997, pp. 60-61.

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