Apparatus for closed-loop combustion control in internal combust

Details Apparatus for closed-loop combustion control in internal combust Apparatus for closed-loop combustion control in internal combust

1983-03-10

1984-08-21

Nelli, Raymond A.

Internal-combustion engines

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

123480, F02P 504

Patent

active

044664087

ABSTRACT:
Schematically disclosed is an engine control apparatus wherein cylinder psure is sensed before and after the top dead center position. Desired cylinder pressure curves are stored in a microcomputer for a range of engine speed-load combinations. By electrically comparing the actual pressure-time curve with the desired pressure curve for the existing speed-load combination it should be possible to generate an error signal representing deviation of actual engine performance from the desired performance, i.e., a permissible plus or minus band following the desired curve. The invention would provide a control action using only three parameters, namely engine speed, engine load and cylinder pressure.

REFERENCES:
patent: 3964443 (1976-06-01), Hartford
patent: 4153019 (1979-05-01), Laubenstein et al.
patent: 4250858 (1981-02-01), Jeenicke et al.
patent: 4290398 (1981-09-01), Hattori et al.
patent: 4327688 (1982-05-01), Lowther
patent: 4328779 (1982-05-01), Hattori et al.
patent: 4401079 (1983-08-01), Aoki et al.

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