Exhaust system for internal combustion engines

Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...

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60313, 60323, F01N 330

Patent

active

054718350

ABSTRACT:
An exhaust control system having a plurality of exhaust manifolds is configured and arranged such that combustion of exhaust gases flowing therethrough is unhibited to the extent that the concentration of major pollutants (CO, HC, NO.sub.x) exiting from the tail pipe and into the environment is substantially reduced. The exhaust system utilizes pairs of primary pipes defining an upstream portion of an exhaust manifold which are coupled to exhaust ports whose respective valves provide fluid flow communication to only one of the primary pipes at any moment in time. A secondary pipe defining an downstream portion of the exhaust manifold is coupled to the outlet of the primary pipes through a connector. One-way valves permit atmospheric air surrounding the exhaust manifold to be drawn into each primary pipe proximate its inlet, and into the secondary pipe proximate the connector.

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The Power "Y" Header, Mid-Range Makes the Difference, from Speed & Custom Dealer, pp. 37-38, Feb. 1973.

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