Title:
EXHAUST DEVICE OF MULTI-CYLINDER ENGINE
Document Type and Number:
Japanese Patent JP2016050541
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve dispersibility of an exhaust gas from a multi-cylinder engine to a catalyst and the like in an exhaust emission control device, and to improve exhaust gas purification performance by substantially unifying a flow speed of the exhaust gas in the whole treatment carrier such as the catalyst.SOLUTION: Two collective pipe portions 31 are disposed on substantially symmetrical positions through a partitioning plate portion 33 of the linear cross-sectional shape disposed at the central portion, and respectively formed into the D-shaped cross-sectional shapes. The D-shaped cross-sectional shape is composed of a first linear portion 34, a pair of second linear portions 35 respectively connected to end portions of the first linear portion 34 substantially in parallel with each other, and a circular arc portion 36 connecting end portions at a side opposite to the first linear portion 34, of the pair of second linear portions 35.SELECTED DRAWING: Figure 4
Inventors:
SHIMOJI HIROKI
HOSHINO TSUKASA
YAMAMOTO AKIRA
YANAGIDA HARUNA
ENDO KOJI
HOSHINO TSUKASA
YAMAMOTO AKIRA
YANAGIDA HARUNA
ENDO KOJI
Application Number:
JP2014176996A
Publication Date:
April 11, 2016
Filing Date:
September 01, 2014
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F01N13/10; F01N3/24; F01N3/28; F01N13/00; F01N13/08
Domestic Patent References:
| JP2003262120A | 2003-09-19 | |||
| JP2008115711A | 2008-05-22 | |||
| JPH11148345A | 1999-06-02 | |||
| JP2002276357A | 2002-09-25 | |||
| JP2001003743A | 2001-01-09 | |||
| JP2012211557A | 2012-11-01 | |||
| JP2011169202A | 2011-09-01 |
Foreign References:
| EP1291500A2 | 2003-03-12 |
Attorney, Agent or Firm:
Maeda patent office