Apparatus for detecting misfire in internal combustion engines f

Details Apparatus for detecting misfire in internal combustion engines f Apparatus for detecting misfire in internal combustion engines f

1993-09-27

1995-08-15

Chilcot, Jr., Richard E.

Measuring and testing

Vehicle chassis

Steering

36443108, G01M 1500

Patent

active

054409225

ABSTRACT:
An apparatus for detecting a misfire in an internal combustion engine includes a rotational signal outputting unit for outputting a rotational signal corresponding to a rotational position of the engine, an average rotational angular speed computing unit for computing an average rotational angular speed of the engine based on the rotational signal, a deviation computing unit for computing a deviation of a computation result of the average rotational angular speed computing unit at every predetermined rotational position, and a misfire determining unit for determining occurrence of a misfire based on a pattern of the relative magnitude of three consecutive values of the deviations obtained at every predetermined rotational position. Further, the misfire determining unit may use a difference of the deviation, which is computed separately, in place of the deviation itself.

REFERENCES:
patent: 4932379 (1990-06-01), Tang et al.
patent: 5035220 (1991-07-01), Uchinami et al.
patent: 5044195 (1991-09-01), James et al.
patent: 5105657 (1992-04-01), Nakaniwa
patent: 5109695 (1992-05-01), James et al.
patent: 5158059 (1992-10-01), Kuroda
patent: 5191788 (1993-03-01), Nishimura
patent: 5197325 (1993-03-01), Tamura et al.
patent: 5239473 (1993-08-01), Ribbens et al.
patent: 5263365 (1993-11-01), Muller et al.
patent: 5263453 (1993-11-01), Wakahara et al.
patent: 5275037 (1994-01-01), Nakayama et al.
patent: 5287282 (1994-02-01), Imai
patent: 5357790 (1994-10-01), Hosoya
SAE 900232--Methods of On-Board Misfire Detection--Gunter Plapp et al. pp. 9-19 (see Application p. 1).

Affiliated with

Also associated with

Rating

Apparatus for detecting misfire in internal combustion engines f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for detecting misfire in internal combustion engines f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting misfire in internal combustion engines f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2174484