Exhaust gas cleaning system for multi-cylinder internal combusti

Details Exhaust gas cleaning system for multi-cylinder internal combusti Exhaust gas cleaning system for multi-cylinder internal combusti

1981-03-17

1983-06-14

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60305, 180219, F01N 322

Patent

active

043875653

ABSTRACT:
A motorcycle comprising a frame on which are mounted a fuel tank, a seat, front and rear wheels, and a multi-cylinder internal combustion engine disposed in a space defined by the fuel tank, seat and wheels. The engine has a plurality of exhaust ports open at the front of the engine connected to an exhaust system. An exhaust gas cleaning system is provided for the multi-cylinder internal combustion engine and comprises a reed valve assembly on the engine operating in response to pulsating exhaust pressure in the engine for selectively connecting an upstream secondary air passage connected to an inlet port of the reed valve assembly and a plurality of downstream secondary air passages of substantially equal length connected between outlet ports of the reed valve assembly and corresponding exhaust ports of the engine.

REFERENCES:
patent: 3869859 (1975-03-01), Thornburgh
patent: 4083184 (1978-04-01), Ushijima
patent: 4154058 (1979-05-01), Mase
patent: 4280582 (1981-07-01), Kouyama

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