Method of and apparatus for analyzing internal combustion engine

Details Method of and apparatus for analyzing internal combustion engine Method of and apparatus for analyzing internal combustion engine

1992-01-24

1997-01-07

Voeltz, Emanuel T.

Boots, shoes, and leggings

731173, 123436, G01M 1500, G06F 1700

Patent

active

055923887

ABSTRACT:
Variations in the speed of an internal combustion engine are measured and the distribution of the variations is analyzed for asymmetry, which indicates engine misfire. A threshold is generated as a function of engine speed increases and compared with engine speed decreases to detect asymmetry in the distribution.

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