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Title:
EXHAUST SYSTEM
Document Type and Number:
Japanese Patent JP2009036085
Kind Code:
A
Abstract:

To provide an exhaust system preventing part of exhaust gas from entering a bypass passage when guiding the exhaust gas from a cylinder to an upstream side main passage, and improving the durability of a bypass catalytic converter while preventing abnormal noise and lowering in engine output.

The exhaust system includes the upstream side main passage 3, a downstream side main passage 4, a main catalytic converter 5, an upstream side bypass passage 6, a downstream side bypass passage 11, and the bypass catalytic converter 13. A flow passage switching valve 2 for guiding the whole amount of the exhaust gas discharged from the cylinder 1 to either the upstream side main passage 3 or the upstream side bypass passage 6, is provided in a branch position of the upstream side main passage 3 and the upstream side bypass passage 6.


Inventors:
Itou, Shigeaki
Application Number:
JP2007000200929
Publication Date:
February 19, 2009
Filing Date:
August 01, 2007
Export Citation:
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Assignee:
CALSONIC KANSEI CORP
International Classes:
F01N3/20; F01N13/08; F01N13/10
Attorney, Agent or Firm:
綾田 正道



 
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