Method and apparatus for reducing NOx in internal combustion eng

Details Method and apparatus for reducing NOx in internal combustion eng Method and apparatus for reducing NOx in internal combustion eng

1985-01-29

1987-07-28

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123422, F02D 4110, F02D 4304

Patent

active

046825770

ABSTRACT:
A method of reducing the amount of nitrogen oxides (NOx) in an internal combustion engine in which the air/fuel ratio is controlled higher than a theoreticl air/fuel ratio during normal operation of a vehicle, characterized in that the air/fuel ratio is controlled lower than the theoretical air-fuel ratio for a predetermined period of time during acceleration from the start of acceleration, the control being effected by means for detecting an accelerated state of the vehicle, means for measuring the lapse of time during acceleration from the start of acceleration and means for performing an acceleration increment correction upon detection of acceleration.

REFERENCES:
patent: 4232642 (1980-11-01), Yamaguchi et al.
patent: 4245605 (1981-01-01), Rice et al.
patent: 4312314 (1982-01-01), McChesney et al.
patent: 4363307 (1982-12-01), Amano et al.
patent: 4408279 (1983-10-01), Imai et al.
patent: 4528961 (1985-07-01), Katoh et al.

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