Ignition timing control system for internal combustion engines

Details Ignition timing control system for internal combustion engines Ignition timing control system for internal combustion engines

1985-10-15

1987-09-22

Wolfe, Jr., Willis R.

Internal-combustion engines

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

123435, 123179BG, F02P 514, F02P 4122

Patent

active

046947990

ABSTRACT:
An ignition timing control system for an internal combustion engine includes a crank angle detector for producing a first pulse signal indicative of a reference crank angle position of the crankshaft and a second pulse signal indicative of a crank angle position that changes constantly with rotation of the crankshaft, an ideal crank angle detector for producing an output signal based on the first and second pulse signals and indicative of an ideal crank angle position at which pressure internal of the engine cylinder attains a peak value, pressure sensing means for producing an output signal indicative of the peak pressure value, a phase difference detector for producing an output signal indicative of the phase difference between the ideal crank angle position signal and the peak pressure value signal, first ignition timing control means for producing an output signal indicative of optimum ignition timing which is in accordance with the phase difference output signal, and second ignition timing control means for controlling ignition timing to a fixed value during actuation of the engine starter.

REFERENCES:
patent: 4399802 (1983-08-01), Oshiage et al.
patent: 4422421 (1983-12-01), Ezoe
patent: 4481925 (1984-11-01), Karau et al.
patent: 4586474 (1986-05-01), Akasu
patent: 4596218 (1986-06-01), Karau et al.
patent: 4598680 (1986-07-01), Lanfer

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