Title:
AIR-COOLED, SINGLE-CYLINDER INTERNAL COMBUSTION ENGINE, SADDLE-TYPE VEHICLE, AND METHOD FOR PRODUCING AIR-COOLED, SINGLE-CYLINDER INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/136535
Kind Code:
A1
Abstract:
A cylinder head body (100) constituting part of an air-cooled, single-cylinder internal combustion engine and integrally formed from an aluminum alloy by die-casting, wherein the aluminum alloy contains 8.0-12.0 wt%, inclusive, of Si, 0.5 wt% or less of Cu, 0.002-0.02 wt%, inclusive, of Sr, 0.2-0.5 wt%, inclusive, of Mg, 0.5-1.0 wt%, inclusive, of Fe, and 0.3-0.6 wt%, inclusive, of Mn. The thermal conductivity of the cylinder head body (100) at 100°C is 145 W/(m·K) or higher, and the Rockwell hardness of the cylinder head body (100) at room temperature is 70-90 HRF, inclusive.
Inventors:
SUZUKI TAKAHARU (JP)
Application Number:
PCT/JP2014/053073
Publication Date:
September 12, 2014
Filing Date:
February 10, 2014
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F02F1/24; B22D17/00; B22D21/04; F02F1/30
Foreign References:
| JPS61229962A | 1986-10-14 | |||
| JP2005139552A | 2005-06-02 | |||
| JPH09213131A | 1997-08-15 | |||
| JPH10318036A | 1998-12-02 | |||
| JPH1190604A | 1999-04-06 | |||
| JP2008274403A | 2008-11-13 | |||
| JP2009013480A | 2009-01-22 |
Attorney, Agent or Firm:
OKUDA SEIJI (JP)
Seiji Okuda (JP)
Seiji Okuda (JP)
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