Process for the control of oxides of nitrogen from internal comb

Details Process for the control of oxides of nitrogen from internal comb Process for the control of oxides of nitrogen from internal comb

1973-03-15

1977-10-11

Dority, Jr., Carroll B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123117R, F02P 504

Patent

active

040529665

ABSTRACT:
An improved process for the control of oxides of nitrogen in engine exhaust gases by retarding the spark timing according to a specific procedure producing extraordinary reductions without adverse driveability effects. The process involves the retarding of spark timing by (1) adjusting the basic timing and (2) disconnecting the vacuum advance mechanism of the ignition distributor.

REFERENCES:
patent: 2027507 (1936-01-01), Arthur
patent: 3385275 (1968-05-01), Burnia et al.
patent: 3515368 (1970-06-01), Kelly
patent: 3584521 (1971-06-01), Tooker et al.
patent: 3800767 (1974-04-01), Winkley
patent: 3895616 (1975-07-01), Steinke

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