Engine exhaust apparatus

Details Engine exhaust apparatus Engine exhaust apparatus

1993-12-21

1995-07-11

Lazarus, Ira S.

Power plants

Internal combustion engine with treatment or handling of...

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

60293, 60298, 60308, 181256, 181262, F01N 320

Patent

active

054310130

ABSTRACT:
An engine exhaust apparatus comprises a sound suppressing section for lowering the exhaust noise level as an exhaust gas discharged from the exhaust port passes through it. The exhaust apparatus is provided with an ejector section for introducing secondary air into the exhaust gas delivered from the sound suppressing section and mixing the gases, and a post-treatment section for purifying the gas mixture delivered from the ejector section. The exhaust gas discharged from an exhaust manifold gets into the ejector section through the sound suppressing section, and is then purified in the post-treatment section. Therefore, the ejector effect cannot be reduced by the sound suppressing section which is subject to high flow resistance. Thus, the exhaust noise level can be lowered with the ejector effect of the introduction of the secondary air improved considerably, and low cost and simple construction can be enjoyed.

REFERENCES:
patent: 3999383 (1976-12-01), Hanaoka
patent: 4099377 (1978-07-01), Yoshimura
patent: 4312313 (1982-01-01), McWhorter
patent: 4319452 (1982-03-01), Morita
patent: 4579194 (1986-04-01), Shiki
patent: 4590762 (1986-05-01), Mifuji
patent: 4894987 (1990-01-01), Harwood

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