Secondary air control apparatus for exhaust gas purifier

Details Secondary air control apparatus for exhaust gas purifier Secondary air control apparatus for exhaust gas purifier

1995-12-21

1997-10-14

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60284, 60289, 60290, 60301, F01N 322

Patent

active

056759681

ABSTRACT:
A secondary air control apparatus constituted by an exhaust gas purifier 32 of an engine 21, a feed quantity control valve 29 for feeding secondary air, a secondary air heating device 31, and a controller 35 for controlling the feed quantity of secondary air and the secondary air heating device 31. The quantity of secondary air to be fed is set in accordance with the operation conditions of an engine, and the secondary air to be fed is modulated in quantity and heated, so that it is possible to utilize the purifying effect of a catalyst efficiently.

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