Smoldering determination method of internal combustion engine

Details Smoldering determination method of internal combustion engine Smoldering determination method of internal combustion engine

2005-08-03

2008-11-18

McCall, Eric S (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Electrical system

C073S114770

Reexamination Certificate

active

07451640

ABSTRACT:
According to the present invention, in a spark ignition-type internal combustion engine which has a spark plug and mounted in a vehicle, an ion current generated in a combustion chamber through the spark plug after ignition is detected and smoldering of the spark plug is determined on the basis of the detected ion current. An operation state of the internal combustion engine is detected and smoldering of the spark plug is determined based on that the detected ion current satisfies a predetermined condition when the detected operation state falls within an operation determination range set corresponding to an operation range in which an intake port pressure close to an atmospheric pressure is achieved using predetermined engine speed as an upper limit and a predetermined intake port pressure as a lower limit.

REFERENCES:
patent: 5193514 (1993-03-01), Kobayashi et al.
patent: 5241937 (1993-09-01), Kanehiro et al.
patent: 5396176 (1995-03-01), Ishii et al.
patent: 6691555 (2004-02-01), Ohkama et al.
patent: 7348782 (2008-03-01), Ando
patent: 2002/0144544 (2002-10-01), Kesler
patent: 2003/0006774 (2003-01-01), Ohkama et al.
patent: 2003/0183195 (2003-10-01), Uchida et al.
patent: 2006/0238144 (2006-10-01), Ando
patent: 2008/0028842 (2008-02-01), Asano et al.
patent: 2008/0030197 (2008-02-01), Fukumura et al.
patent: 5-263745 (1993-10-01), None
patent: 11-36971 (1999-02-01), None
patent: 2003-286932 (2003-10-01), None
patent: 2004-108298 (2004-04-01), None

Affiliated with

Also associated with

Rating

Smoldering determination method of 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 Smoldering determination method of internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoldering determination method of internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4026402