Device for controlling ignition timing in internal combustion en

Details Device for controlling ignition timing in internal combustion en Device for controlling ignition timing in internal combustion en

1987-02-04

1989-02-07

Dolinar, Andrew M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

73 35, 73115, G01L 2322, F02P 5145

Patent

active

048024546

ABSTRACT:
A device for controlling ignition timing in an internal combustion engine comprises a pressure sensor disposed in the vicinity of each combustion chamber and is able to determine both the maximum cylinder pressure angle and the presence/absence of knocking from the output of the pressure sensor by means of a single circuit. The circuit further calculates the deviation of the maximum cylinder pressure angle from a target maximum-pressure angle and in response to the deviation compensates the basic ignition timing separately for each cylinder. The compensation of deviation is carried out in increments whose magnitude varies with the amount of deviation.

REFERENCES:
patent: 4413599 (1983-11-01), Shigematsu et al.
patent: 4466406 (1984-08-01), Hartung et al.
patent: 4481925 (1984-11-01), Karau et al.
patent: 4501137 (1985-02-01), Aoki et al.
patent: 4660535 (1987-04-01), Asano

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