Lightweight exhaust manifold and exhaust pipe ducting for intern

Details Lightweight exhaust manifold and exhaust pipe ducting for intern Lightweight exhaust manifold and exhaust pipe ducting for intern

1997-03-05

1999-07-27

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

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

60323, F01N 300

Patent

active

059270705

ABSTRACT:
An improved exhaust system for an internal combustion gasoline-and/or diesel-fueled engine includes an engine exhaust manifold which has been fabricated from carbon-carbon composite materials in operative association with an exhaust pipe ducting which has been fabricated from carbon-carbon composite materials. When compared to conventional steel, cast iron, or ceramic-lined iron parts, the use of carbon-carbon composite exhaust-gas manifolds and exhaust pipe ducting reduces the overall weight of the engine, which allows for improved acceleration and fuel efficiency; permits operation at higher temperatures without a loss of strength; reduces the "through-the wall" heat loss, which increases engine cycle and turbocharger efficiency and ensures faster "light-off" of catalytic converters; and, with an optional thermal reactor, reduces emission of major pollutants, i.e. hydrocarbons and carbon monoxide.

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