Misfire detection device for an internal combustion engine

Details Misfire detection device for an internal combustion engine Misfire detection device for an internal combustion engine

1989-09-29

1991-01-29

Raevis, Robert

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

049877712

ABSTRACT:
A misfire detection device for an internal combustion engine comprises an ionic current detection circuit which detects an ionic current caused by ignition occurring at an ignition plug for a cylinder in a multi-cylinder internal combustion engine, a gate circuit which masks an output signal generated from the ionic current detection circuit only during an ignition sparking time, a comparing circuit which compares an ionic current signal passed through the gate circuit with a predetermined level, and a misfire detection circuit which detects the presence or the absence of a misfire and a misfired cylinder based on the output signal of the comparing circuit. The future supply of fuel to a misfired cylinder is controlled by a fuel supply control device.

REFERENCES:
patent: 3908366 (1975-09-01), Masaki
patent: 3924457 (1975-12-01), Oshima et al.
patent: 4003248 (1977-01-01), Leichle
patent: 4425891 (1984-01-01), Kashimura et al.
patent: 4886029 (1989-12-01), Lill et al.

Affiliated with

Also associated with

Rating

Misfire detection device for an internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Misfire detection device for an internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Misfire detection device for an internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-806833