EXHAUST DEVICE OF MULTI-CYLINDER ENGINE

摘要

An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.

主权项

1. An exhaust device of a multi-cylinder engine that is arranged so that cylinder lines extend in a prescribed direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward of the engine, comprising:
in sequence from an upstream side of an exhaust gas flow,
a plurality of independent exhaust pipes corresponding to the cylinders,a single exhaust pipe which has collected all independent exhaust pipes, anda catalyst device, wherein, the single exhaust pipe includes two or more bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.