System for exhaust gas purification and method for exhaust gas p

Details System for exhaust gas purification and method for exhaust gas p System for exhaust gas purification and method for exhaust gas p

1996-06-19

1999-03-23

Wolfe, Willis R.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60301, 422177, 4232132, F01N 328, F01N 310, B01J 802

Patent

active

058844732

ABSTRACT:
A system for exhaust gas purification disposed in the exhaust pipe of an internal combustion engine, includes followings (i) a catalyst giving an excellent light-off performance at low temperatures, including a carrier and a catalyst layer supported thereon, the catalyst layer including a precious metal and a substance having an electron donatability and/or a nitrogen dioxide absorbability and releasability, and (ii) an adsorbent comprising a carrier and an adsorbent layer having a hydrocarbon adsorbability, supported on the carrier. This system for exhaust gas purification can effectively purify the harmful substances contained in the exhaust gases discharged from internal combustion engines of automobiles, etc., particularly the hydrocarbons discharged in a large amount from a gasoline engine during cold start.

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Catalysis Today: "Development of Automotive Palladium Three-Way Catalysts," by Sekiba et al., 1994, pp. 113-126.

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