Exhaust emission control device

Details Exhaust emission control device Exhaust emission control device

1995-06-02

1997-07-22

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60284, 60299, F01N 328

Patent

active

056494211

ABSTRACT:
An exhaust emission control device includes an HC convening first catalytic converter mounted in close proximity to an engine, and an HC converting second catalytic converter connected to the first catalytic converter through an exhaust pipe. A time point of starting of HC conversion by the second catalytic converter is set between a time point of completion of HC adsorption in the second catalytic converter and a time point of completion of HC desorption from the second catalytic converter. Thus, it is possible to reduce the amount of HC desorbed.

REFERENCES:
patent: 5144800 (1992-09-01), Shioya
patent: 5163289 (1992-11-01), Bainbridge
patent: 5331810 (1994-07-01), Ingermann

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