Title:
CYLINDER HEAD, INTERNAL COMBUSTION ENGINE, AND METHOD FOR MANUFACTURING CYLINDER HEAD
Document Type and Number:
WIPO Patent Application WO/2019/065186
Kind Code:
A1
Abstract:
A cylinder head (1) according to an embodiment of the present invention is provided with: a cylinder head body (10) having an intake port (11) and an exhaust port (12), the cylinder head body being formed of an aluminum alloy; and a valve seat formed of an iron-based alloy and resistance-welded to a downstream end portion of the intake port (11). The valve seat (20) has at least one groove (21), which extends in the circumferential direction of the valve seat (20), on a portion contacting the cylinder head body (10).
Inventors:
SUZUKI TAKAHARU (JP)
Application Number:
PCT/JP2018/033464
Publication Date:
April 04, 2019
Filing Date:
September 10, 2018
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F01L3/22; B23K11/00; B23K11/20; B23K11/34; F02F1/24
Foreign References:
| JPH0913919A | 1997-01-14 | |||
| US20130061827A1 | 2013-03-14 | |||
| US20110203555A1 | 2011-08-25 | |||
| JPH0734965A | 1995-02-03 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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