Misfire detection system and method of median filtering

Details Misfire detection system and method of median filtering Misfire detection system and method of median filtering

2005-01-25

2005-01-25

Wolfe, Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S110000, C701S115000, C123S406240, C123S406330, C123S406600, C123S406640, C073S116070, C073S117020, C073S118040

Reexamination Certificate

active

06847882

ABSTRACT:
A processor having an embedded median filter routine, a method of median filtering using a vehicle's CPU, and a misfire detection system for an internal combustion engine with crankshaft acceleration detection means for determining crankshaft acceleration values. In general, the processor is configured to receive new acceleration values and includes a data structure with a data array containing a predetermined number of data fields storing acceleration values in magnitude order. The embedded median filtering routine is configured to identify an oldest in time acceleration value, identify a deletion position in the data array for the oldest in time acceleration value, identify an insertion position in the data array, move selected acceleration values in the data array to vacate the insertion position, insert the new acceleration value in the insertion position, and determine the median value of the acceleration values in the data array.

REFERENCES:
patent: 5109695 (1992-05-01), James et al.
patent: 5144568 (1992-09-01), Glover
patent: 5237862 (1993-08-01), Mangrulkar et al.
patent: 5515720 (1996-05-01), Remboski, Jr. et al.
patent: 5528931 (1996-06-01), James et al.
patent: 5542291 (1996-08-01), James
patent: 5610328 (1997-03-01), Magan et al.
patent: 5699253 (1997-12-01), Puskorius et al.
patent: 5708595 (1998-01-01), Connell
patent: 5841025 (1998-11-01), Remboski et al.
patent: 5862506 (1999-01-01), Lynch et al.
patent: 5906652 (1999-05-01), Remboski et al.
patent: 6018750 (2000-01-01), Connell et al.
patent: 6070567 (2000-06-01), Kakizaki et al.
patent: 6112149 (2000-08-01), Varady et al.
patent: 6115727 (2000-09-01), Schooler et al.
patent: 6178414 (2001-01-01), Beckmann et al.
patent: 6388444 (2002-05-01), Hahn et al.
patent: 20020063208 (2002-05-01), Hastings
patent: 0 858 158 (2000-05-01), None
patent: 0 818 887 (1998-10-01), None
patent: WO 9706483 (1999-02-01), None
patent: WO 9923547 (1999-05-01), None
P. Ekstrom, Embedded Systems Programming: Better Than Average, Nov. 2000 (10 pages).

Affiliated with

Also associated with

Rating

Misfire detection system and method of median filtering 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 system and method of median filtering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Misfire detection system and method of median filtering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3370614