Misfire detection in an internal combustion engine using modifie

Details Misfire detection in an internal combustion engine using modifie Misfire detection in an internal combustion engine using modifie

1995-08-04

1996-08-06

Chilcot, Richard

Measuring and testing

Vehicle chassis

Steering

73116, 123419, 123436, 36443108, G01M 1500, F02P 515

Patent

active

055422918

ABSTRACT:
The invention estimates baseline acceleration expected from normal (i.e., non-misfiring) cylinders in an internal combustion engine even when the misfire rate reaches 50%. An offset median value is used to derive an average or gross acceleration value to provide a baseline rather than a true median. The offset median is the next largest value greater than the true median, so that the presence of 50% misfires does not degrade the determination of the baseline.

REFERENCES:
patent: 4711212 (1987-12-01), Haraguchi et al.
patent: 5044195 (1991-09-01), James et al.
patent: 5056360 (1991-10-01), Dosdall et al.
patent: 5095742 (1992-03-01), James et al.
patent: 5109695 (1992-05-01), James et al.
patent: 5305635 (1994-04-01), James et al.
patent: 5361629 (1994-11-01), McCombie
patent: 5394744 (1995-03-01), James et al.
Misfire Detection by Evaluating Crankshaft Speed-A Means to Comply with OBDII, by Mark Klenk, Winfried Moser, Werner Mueller & Wolfgang Wimmer, SAE Technical Paper Series, #930399.

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