Method and apparatus for performance enhancement of the manifold

Details Method and apparatus for performance enhancement of the manifold Method and apparatus for performance enhancement of the manifold

1995-02-07

1997-11-11

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60289, 60297, F01N 328

Patent

active

056851456

ABSTRACT:
In an exhaust gas system comprising a hydrocarbon trap (28) and a downstream catalyst zone (30), a heat exchange catalyst member (10) is incorporated into the system to provide heat exchange between the exhaust gas and air that is pumped through the heat exchange catalyst member (10). The heated air is injected into the exhaust gas stream to facilitate the oxidation of hydrocarbons in the downstream catalyst zone. The heat exchange catalyst member (10) defines two separate flow paths therethrough, one of the flow paths containing a catalyst zone for the exhaust gas. In an alternative embodiment, the injected air is heated by a heat exchange trap (28') or by a separate heating element (62).

REFERENCES:
patent: 3828552 (1974-08-01), Nishiguchi
patent: 3910042 (1975-10-01), Yuge
patent: 5271906 (1993-12-01), Yuuki
patent: 5373696 (1994-12-01), Adamczyk

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