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Title:
SADDLE-RIDING-TYPE VEHICLE EXHAUST DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/152541
Kind Code:
A1
Abstract:
Provided is a saddle-riding-type vehicle exhaust device in which two oxygen sensors that make it possible to detect the deterioration of a catalyst device are provided in favorable positions. A saddle-riding-type vehicle exhaust device 20 having a pipe section 19 that passes below an engine E, guides discharged gas to the rear of the vehicle chassis, and houses a catalyst device C, and also having a muffler 26 connected to the rear end of the pipe section 19, wherein the pipe section 19 is provided with an upstream-side oxygen sensor U positioned on the upstream side of the catalyst device C and a downstream-side oxygen sensor D positioned on the downstream side of the catalyst device C. The pipe section 19 is further provided with an increased-diameter section 61, the diameter of which is increased in order to accommodate the catalyst device C. The downstream-side oxygen sensor D is provided in the increased-diameter section 61. When seen from a chassis-side planar view, the upstream-side oxygen sensor U and the downstream-side oxygen sensor D are located above the center-line Oc of the increased-diameter section 61 in the chassis. The increased-diameter section 61 is positioned below the cylinder block 43 of the engine E and to the front of the crankcase 52.

Inventors:
YAMASHITA Akihiro (LTD. 4-1 Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
NAGATSUYU Toshiya (LTD. 4-1 Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
TAJIRI Hideaki (LTD. 4-1 Chuo 1-chome, Wako-sh, Saitama 93, 〒3510193, JP)
MATSUI Yasumasa (LTD. 1-1 Minami-Aoyama 2-chome, Minato-k, Tokyo 56, 〒1078556, JP)
OISHI Yu (LTD. 1-1 Minami-Aoyama 2-chome, Minato-k, Tokyo 56, 〒1078556, JP)
Application Number:
JP2016/057468
Publication Date:
September 29, 2016
Filing Date:
March 09, 2016
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; B62M7/02; F01N3/20; F01N3/24; F01N13/08; F01N13/18; F02B61/02; F02B67/00; F02D35/00
Foreign References:
JP3143323U2008-07-17
JP2013014278A2013-01-24
JP2014227843A2014-12-08
JPH0673320U1994-10-18
JP2003193835A2003-07-09
JP2000274233A2000-10-03
JP2004301026A2004-10-28
Other References:
See also references of EP 3276137A4
Attorney, Agent or Firm:
SAKAMOTO Kiyotaka et al. (7F Lichfield-Nakano-sakaue, 35-6Chuo 1-Chome, Nakano-k, Tokyo 11, 〒1640011, JP)
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