Exhaust apparatus for a V-type internal combustion engine

Details Exhaust apparatus for a V-type internal combustion engine Exhaust apparatus for a V-type internal combustion engine

1987-01-29

1988-03-22

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60322, 60323, F01N 710, F01N 328

Patent

active

047319933

ABSTRACT:
An exhaust apparatus connected to a V-type internal combustion engine which is mounted in an engine compartment in a front part of a vehicle. The exhaust apparatus comprises a front exhaust manifold and a rear exhaust manifold connected to banks of the V-type engine respectively, an exhaust assembly connected to the exhaust manifolds and a catalytic converter interposed in the exhaust assembly. The wall thickness of the front exhaust manifold is made thinner than that of the rear exhaust manifold. By the thin front exhaust manifold, the heat capacity of the front exhaust path extending from the front exhaust manifold toward the catalytic converter is lessened, thereby suppressing the dropping of temperature of the exhaust gas flowing through the front exhaust path. As a result, the dropping of temperature of the exhaust gas reaching the catalytic converter is suppressed as a whole, and a catalyst in the catalytic converter is warmed up quickly to a required temperature.

REFERENCES:
patent: 4522282 (1985-06-01), Yamamoto
patent: 4653270 (1987-03-01), Takii

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