Controlling apparatus for introduction air into exhaust pipe of

Details Controlling apparatus for introduction air into exhaust pipe of Controlling apparatus for introduction air into exhaust pipe of

1993-06-18

1996-02-27

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60284, F01N 322

Patent

active

054938589

ABSTRACT:
In an apparatus for controlling the introduction of air into an exhaust pipe of an internal combustion engine in which air is introduced from the intake side to the exhaust side to improve the efficiency of purifying exhaust gases, to prevent a decline in the purification efficiency of a catalyst in a state in which the exhaust gas temperature immediately after starting is low. A control valve 11 is provided in an air introducing pipe 9 for introducing air from the intake side to the exhaust side, and the control valve 11 is set in a shut-off state during starting or during starting and a predetermined time duration immediately after starting.

REFERENCES:
patent: 3503716 (1970-03-01), Berger
patent: 3751914 (1973-08-01), Pollock
patent: 3962867 (1976-06-01), Ikeura
patent: 4098078 (1978-07-01), Laurent

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