Method of detecting misfires in a multicylinder internal combust

Details Method of detecting misfires in a multicylinder internal combust Method of detecting misfires in a multicylinder internal combust

1996-05-17

1998-03-10

Dougherty, Elizabeth L.

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

057263523

ABSTRACT:
The invention is directed to a method for detecting combustion misfires in a multicylinder internal combustion engine. The method includes the steps of: detecting the time span ts(i) in which the crankshaft of the engine passes through a pregiven angular range (.phi.) for each ignition of the engine; computing a vector element Lut(i) for the rough running of the engine based on at least one detected time span ts(i) for each ignition (i) of the engine; forming a vector LUT(i) from at least two vector elements Lut(i), Lut(j) with the two vector elements Lut(i), Lut(j) being for each ignition (i); computing the spacing between the vector LUT(i) and at least one predetermined reference vector Rn and Ra; and, detecting a combustion misfire when the spacing satisfies a predetermined condition.

REFERENCES:
patent: 5200899 (1993-04-01), Ribbens et al.
patent: 5239473 (1993-08-01), Ribbens et al.
patent: 5495415 (1996-02-01), Ribbens et al.
patent: 5505079 (1996-04-01), Rossignol
patent: 5522258 (1996-06-01), Hafner
patent: 5576963 (1996-11-01), Ribbens et al.

Affiliated with

Also associated with

Rating

Method of detecting misfires in a multicylinder internal combust does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of detecting misfires in a multicylinder internal combust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting misfires in a multicylinder internal combust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-141161