Ignition timing controlling apparatus for internal combustion en

Details Ignition timing controlling apparatus for internal combustion en Ignition timing controlling apparatus for internal combustion en

1990-03-15

1991-11-12

Dolinar, Andrew M.

Internal-combustion engines

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

F02P 5145

Patent

active

050639021

ABSTRACT:
An ignition timing controlling apparatus which calculates a crank angle when the pressure building-up rate in a cylinder of an internal combustion engine is the maximum, and feedback-controls an ignition timing so as to make the deviation value between the crank angle and the target value thereof be zero. The apparatus does not feedback-control in the predetermined running region where the crank angle at which pressure building-up rate in the cylinder at the time of light loading, idling and so on is the maximum is unstabilized, and ignites a plug at a basic ignition timing determined by running state of the engine as well as makes the gain of feedback-control differ from each other according to whether the deviation is in the advanced angle side or delayed angle side, and is capable of controlling ignition timing so that the maximum torque can be obtained regardless of elapsing change and dispersion in manufacturing.

REFERENCES:
patent: 3875912 (1975-04-01), Bullo
patent: 4130097 (1978-12-01), Ford
patent: 4314534 (1982-02-01), Nakajima et al.
patent: 4466408 (1984-08-01), Cheklich
patent: 4531399 (1985-07-01), Aono

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