Method of monitoring an internal combustion engine ignition syst

Details Method of monitoring an internal combustion engine ignition syst Method of monitoring an internal combustion engine ignition syst

1992-12-21

1994-08-02

Strecker, Gerard R.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

In situ testing of spark plug

324379, 324384, 731172, 36442403, F02P 1700, F02P 1102

Patent

active

053349385

ABSTRACT:
Monitoring apparatus is provided for the ignition system of an internal combustion engine such as is provided in a motor vehicle, which is capable of detecting a variety of malfunctions of ignition under a variety of engine operating ranges, so that the catalyst used in the exhaust system of the engine can be protected by setting lambda=0 and/or cutting off fuel injection to an inoperative cylinder, in as many instances of malfunction as possible. Various methods of monitoring are available and are correlated for selection in accordance with the different operating ranges of the engine. The ignition spark duration and the ignition discharge voltage are measured for individual sparks on the primary side of an ignition coil and are compared with limit values for correct ignition, these limit values being selected from a memory in accordance with the particular range of operating conditions in which the engine is operating. If the quality of malfunction detection is not good enough for individual ignition deficiencies to be reliably detected, deficiencies that are periodically recurrent or abnormally bunched are detected on a statistical basis.

REFERENCES:
patent: 4291383 (1981-09-01), Tedeschi et al.
patent: 4918389 (1990-04-01), Schleupen et al.

Affiliated with

Also associated with

Rating

Method of monitoring an internal combustion engine ignition syst 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 monitoring an internal combustion engine ignition syst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of monitoring an internal combustion engine ignition syst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-67237