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Patent Searching and Data


Title:
EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/187757
Kind Code:
A1
Abstract:
An exhaust device for an internal combustion engine housed in a vehicle having catalysts (42, 72) and mufflers (50, 80) that are provided in an exhaust pipe extending from the internal combustion engine. The exhaust device comprises: upstream exhaust gas sensors (55, 85) provided upstream from the catalysts (42, 72); and downstream exhaust gas sensors (56, 86) provided downstream from the catalysts (42, 72). The downstream exhaust gas sensors (56, 86) are provided in exhaust pipes (44, 74) extending outside from expansion chambers (E2, E3, F1) in the mufflers (50, 80). As a result, exhaust gas sensors can be easily attached downstream from exhaust pipe catalysts, without modifying the muffler case.

Inventors:
NAKAMURA, Masashi (LTD. 4-1 Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
SHIMIZU, Takahiko (LTD. 4-1 Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
Application Number:
JP2019/005677
Publication Date:
October 03, 2019
Filing Date:
February 15, 2019
Export Citation:
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Assignee:
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 〒1078556, JP)
International Classes:
F01N13/00; F01N3/00; F02D35/00
Foreign References:
JP2017150307A2017-08-31
JP2008063977A2008-03-21
JP2006112239A2006-04-27
JPS5638515A1981-04-13
Attorney, Agent or Firm:
KAMIZAWA, Junko et al. (EHARA & ASSOCIATES, 33-4 Hongo 1-chome, Bunkyo-k, Tokyo 33, 〒1130033, JP)
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