Feedback control of exhaust gas recirculation based on combustio

Details Feedback control of exhaust gas recirculation based on combustio Feedback control of exhaust gas recirculation based on combustio

1977-08-16

1980-02-05

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041867017

ABSTRACT:
To effect EGR in an internal combustion engine with the maintenance of adequate balance between the suppression of NO.sub.x formation and preservation of stable engine operation, the condition of combustion in the engine is taken as the basis of feedback control of the volume of recirculated exhaust gas so as to correct a deviation of the total amount of the recirculated exhaust gas and unexhausted combustion gas in the combustion chamber from a desired amount. The intensity of an ionic current produced upon combustion in each combustion chamber, the magnitude of mechanical vibration of the engine or the frequency of misfire in a combustion chamber is detected as an exact indication of the condition of combustion.

REFERENCES:
patent: 3872846 (1975-03-01), Taplin et al.
patent: 3977373 (1976-08-01), Sand
patent: 4008697 (1977-02-01), Konno

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