Title:
MUFFLER FOR SMALL ENGINE
Document Type and Number:
WIPO Patent Application WO/2006/080441
Kind Code:
A1
Abstract:
A muffler for a small engine having a large muffling effect and exhaust gas purification effect, enabling the easy manufacturing of an exhaust gas purifier, and manufacturable at low cost. The muffler comprises a first expansion chamber (12) for exhaust gas having an exhaust gas inlet (11) connected to the exhaust port of the engine, a second expansion chamber (15) for exhaust gas partitioned from the first expansion chamber (12) through a partition plate (14) and communicating with the first expansion chamber (12) through a first air hole (13) in the partition plate (14), and a third expansion chamber (18) for exhaust gas partitioned from the second expansion chamber (15) through the partition plate (14) communicating with the second expansion chamber (15) through a second air hole (16) in the partition plate (14) and having an exhaust gas outlet (17). The muffler is characterized in that a first heat resistant mesh catalyst (19) is installed at the exhaust gas inlet (11), and the first exhaust gas purifier (20) formed by coating a catalyst for purifying the exhaust gas on a heat resistant knit fabric (20a) is installed at the first air hole (13) in the partition plate (14).
Inventors:
MUKAIDA HIDENORI (JP)
Application Number:
PCT/JP2006/301325
Publication Date:
August 03, 2006
Filing Date:
January 27, 2006
Export Citation:
Assignee:
HIRAOKA MFG CO LTD (JP)
MUKAIDA HIDENORI (JP)
MUKAIDA HIDENORI (JP)
International Classes:
F01N1/08; F01N1/00; F01N3/24; F01N3/28; F01N13/08
Foreign References:
| JP2000018028A | 2000-01-18 | |||
| JPH0589824U | 1993-12-07 | |||
| JP2001317325A | 2001-11-16 | |||
| JPH07506050A | 1995-07-06 | |||
| JP2002522685A | 2002-07-23 | |||
| JPH0564410U | 1993-08-27 | |||
| JPH02122111U | 1990-10-05 | |||
| JPS57193915U | 1982-12-08 | |||
| JPH0630416U | 1994-04-22 | |||
| JPH0462319U | 1992-05-28 | |||
| JPS58172010U | 1983-11-17 |
Attorney, Agent or Firm:
Isono, Michizo c/o Isono International Patent Office (Sabo Kaikan Annex 7-4, Hirakawa-cho 2-chom, Chiyoda-ku Tokyo, JP)
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