Title:
The exhaust of a multi-cylinder engine
Document Type and Number:
Japanese Patent JP6245123
Kind Code:
B2
Abstract:
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.
Inventors:
Shiro Kato
Tatsuya Koga
Sumi Shinji
Haruna Yanagida
Murao Norio
Tatsuya Koga
Sumi Shinji
Haruna Yanagida
Murao Norio
Application Number:
JP2014193663A
Publication Date:
December 13, 2017
Filing Date:
September 24, 2014
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F01N3/28; F01N13/08; F01N13/14; F02B27/04
Domestic Patent References:
| JP2011099415A | ||||
| JP2013079609A | ||||
| JP5010122A | ||||
| JP10018839A | ||||
| JP2006063938A | ||||
| JP2013057255A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato