Exhaust gas cleaning system for an internal combustion engine

Details Exhaust gas cleaning system for an internal combustion engine Exhaust gas cleaning system for an internal combustion engine

1981-06-19

1983-11-29

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60305, F01N 334

Patent

active

044174420

ABSTRACT:
An exhaust gas cleaning system for an internal combustion engine having a cylinder head with a plurality of exhaust valve ports therein associated with respective exhaust valves and an exhaust passage for discharge of exhaust gases to an exhaust system. The exhaust passage is constituted by a manifold exhaust port which is connected to the exhaust system and a plurality of branch ports which branch from the manifold exhaust port and communicate with respective exhaust valve ports. A secondary air passage is directly connected to the respective branch exhaust ports for supplying secondary air thereto in immediate proximity to the exhaust valves. Each secondary air passage is composed of a manifold secondary air passage opening externally of the cylinder head and branch secondary air passages branching from the manifold secondary air passage and communicating with the branch exhaust ports.

REFERENCES:
patent: 3869859 (1975-03-01), Thornburgh
patent: 3965678 (1976-06-01), Shiki
patent: 4083184 (1978-04-01), Ushijima
patent: 4133175 (1979-01-01), Katoh

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