Method and apparatus for closed-loop control of the operating mi

Details Method and apparatus for closed-loop control of the operating mi Method and apparatus for closed-loop control of the operating mi

1980-10-10

1983-08-30

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Alternate or simultaneous lean-rich

123489, 123568, 123589, F02D 3300

Patent

active

044010818

ABSTRACT:
A method is described for closed-loop control of the composition of the operating mixture coming to be combusted in an internal combustion engine, wherein operating mixtures are formed in the combustion chambers either simultaneously or sequentially, which differ from one another percentagewise by a predetermined amount of the air number .lambda.. The different exhaust gas compositions resulting from this difference are measured sequentially or simultaneously with the aid of one or two CO sensors and the average operating mixture composition is regulated such that a constant difference is established for the CO content in the exhaust gas. In the use of a quantity of recirculated exhaust gas to influence the operating mixture composition, an optimal composition of the exhaust gases is thereby established.

REFERENCES:
patent: 3745768 (1973-07-01), Zechnall et al.
patent: 3851632 (1974-12-01), Teshirogi et al.
patent: 3931813 (1976-01-01), Horie et al.
patent: 4068637 (1978-01-01), Takamiya
patent: 4125098 (1978-11-01), Kiyota
patent: 4134261 (1979-01-01), Iizuka et al.
patent: 4149502 (1979-04-01), Johnson et al.
patent: 4195604 (1980-04-01), Taplin

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