Misfire detection using acoustic sensors

Details Misfire detection using acoustic sensors Misfire detection using acoustic sensors

2006-04-04

2006-04-04

McCall, Eric S. (Department: 2855)

Measuring and testing

Vehicle chassis

Steering

Reexamination Certificate

active

07021128

ABSTRACT:
A misfire detection system is provided including an internal combustion engine having a combustion chamber and an exhaust system in fluid communication with the combustion chamber. An acoustic sensor is associated with either the combustion chamber or the exhaust system for sensing noise. The controller receives a signal from the acoustic sensor for determining whether the noise is indicative of misfire. One or more acoustic sensors may be fluidly and/or mechanically coupled to the engine or other portion of the powertrain system. The acoustic sensor generates a signal having a frequency that may be compared to engine temperatures, speeds, and loads to determine whether a misfire event has occurred in one of the cylinders. The signature of the frequency may be determined and compared with a known set of frequencies for desired engine operation to determine whether a misfire has occurred.

REFERENCES:
patent: 4602507 (1986-07-01), Hayes
patent: 5115778 (1992-05-01), Holroyd
patent: 5763769 (1998-06-01), Kluzner
patent: 5935189 (1999-08-01), Park

Affiliated with

Also associated with

Rating

Misfire detection using acoustic sensors 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 using acoustic sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Misfire detection using acoustic sensors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3603836