Method for detecting combustion misfires in an internal combusti

Details Method for detecting combustion misfires in an internal combusti Method for detecting combustion misfires in an internal combusti

1998-06-01

2000-05-16

McCall, Eric S.

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

060620714

ABSTRACT:
A method for detecting combustion misfires in an internal combustion engine is based on the speed of rotation of the crankshaft. An unsteady running value is derived from measured cylinder segment times and subsequent correction of mechanical teeth defects. A disturbance caused by torsional oscillations of the crankshaft is taken into account by a cylinder-selective disturbance variable compensation dependent on load and speed of rotation.

REFERENCES:
patent: 5237504 (1993-08-01), Holmes et al.
patent: 5345817 (1994-09-01), Grenn et al.
patent: 5377537 (1995-01-01), James
patent: 5531108 (1996-07-01), Feldkamp et al.
patent: 5789658 (1998-08-01), Henn et al.

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