Misfiring sensing apparatus

Details Misfiring sensing apparatus Misfiring sensing apparatus

1991-09-18

1994-08-09

Black, Thomas G.

Boots, shoes, and leggings

36443105, 36443107, 731173, G01M 1500

Patent

active

053372409

ABSTRACT:
A misfiring sensing apparatus for an internal combustion engine measures the length of time required for two periods during the operation of an engine, each of the periods corresponding to a predetermined number of degrees of rotation of the crankshaft of the engine and corresponding to prescribed positions of the pistons of the engine. The two periods are selected so that the ratio of the lengths of the two periods will change when one of the cylinders of the engine is misfiring. Misfiring is detected based on the value of the ratio. In one form of the invention, misfiring is sensed by comparing the ratio with a reference value. In another form of the invention, the ratio is used to calculate a value indicative of the current angular acceleration of the crankshaft of the engine, and the calculated value is compared with a reference value to determine whether knocking is taking place.

REFERENCES:
patent: 4179922 (1979-12-01), Bouverie et al.
patent: 4295363 (1981-10-01), Buck et al.
patent: 4951628 (1990-08-01), Matsuoka et al.
patent: 5041980 (1991-08-01), Maddock et al.
patent: 5044195 (1991-09-01), James et al.
patent: 5056360 (1991-10-01), Dosdall et al.
patent: 5076098 (1991-12-01), Miwa
patent: 5105657 (1992-04-01), Nakaniwa
patent: 5109695 (1992-05-01), James et al.
patent: 5111405 (1992-05-01), Maeda et al.
patent: 5168854 (1992-12-01), Hashimoto et al.

Affiliated with

Also associated with

Rating

Misfiring sensing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Misfiring sensing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Misfiring sensing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-221058