Individual cylinder combustion state detection from engine crank

Details Individual cylinder combustion state detection from engine crank Individual cylinder combustion state detection from engine crank

1997-05-16

2000-06-06

Argenbright, Tony M.

Internal-combustion engines

Spark ignition timing control

Electronic control

73116, 731173, 123436, 701110, F02D 4300, F02P 706

Patent

active

060705671

ABSTRACT:
Acceleration corresponding to individual cylinders can be measured by an apparatus. The apparatus comprises a crankshaft position sensor providing position signals, and a device including a programmed control unit. The device measures a first time period of rotation through a first rotation interval defined by first selected position signals separated by a first angle of rotation. It measures a second time period of rotation through a second rotation interval defined by second selected position signals separated by a second angle of rotation. It also measures a third time period of rotation between the first and second rotation intervals. Each of the first and second rotation intervals includes a selected power stroke. The first instantaneous speed is calculated as a function of the first measured time period and the second instantaneous speed is calculated as a function of the second measured time period. The device calculates a ratio of the difference between the first and second calculated instantaneous speeds to the third measured time period and determines the acceleration based on the calculated ratio.

REFERENCES:
patent: 3972230 (1976-08-01), Hanson et al.
patent: 4064747 (1977-12-01), Rackliffe et al.
patent: 4295363 (1981-10-01), Buck et al.
patent: 4532592 (1985-07-01), Citron et al.
patent: 4691288 (1987-09-01), Kay et al.
patent: 4697561 (1987-10-01), Citron
patent: 4932379 (1990-06-01), Tang et al.
patent: 4936277 (1990-06-01), Deutsch et al.
patent: 5016591 (1991-05-01), Nanyoshi et al.
patent: 5044194 (1991-09-01), James 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: 5088318 (1992-02-01), Osawa
patent: 5095742 (1992-03-01), James et al.
patent: 5105657 (1992-04-01), Nakaniwa
patent: 5109695 (1992-05-01), James et al.
patent: 5331848 (1994-07-01), Nakagawa et al.
patent: 5385129 (1995-01-01), Eyberg
patent: 5503007 (1996-04-01), Plee et al.
patent: 5574217 (1996-11-01), McCombie

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