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Patent Searching and Data


Title:
CONNECTING ROD, SINGLE-CYLINDER INTERNAL COMBUSTION ENGINE COMPRISING SAME, AND SADDLE TYPE VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/077904
Kind Code:
A1
Abstract:
Disclosed is a connecting rod (1) which comprises a rod main body (10), a small end part (20) that is provided on one end of the rod main body (10), and a large end part (30) that is provided on the other end of the rod main body (10). The connecting rod (1) is formed from an iron alloy, and has been subjected to a carbonitriding treatment or to a carburizing treatment and a nitriding treatment. The carbon content at a depth of 0.1 mm from the inner peripheral surface (30a) of the large end part (30) is 0.8-2.1 wt% (inclusive), and the nitrogen content at a depth of 0.1 mm from the inner peripheral surface (30a) of the large end part (30) is 0.03-0.19 wt% (inclusive). Consequently, the connecting rod is prevented from occurrence of flaking at the inner peripheral surface of the large end part, and has excellent fatigue strength.

Inventors:
KUBOTA TSUYOSHI (JP)
Application Number:
JP2010/071328
Publication Date:
June 30, 2011
Filing Date:
November 30, 2010
Export Citation:
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Assignee:
YAMAHA MOTOR CO LTD (?4388501, JP)
KUBOTA TSUYOSHI (?4388501, JP)
International Classes:
C23C8/32; C21D1/06; C21D1/70; C21D9/00; C22C38/00; C22C38/18; C22C38/22; C23C8/34; F16C7/02
Foreign References:
JP2000313949A2000-11-14
JP2009019639A2009-01-29
JPH1046286A1998-02-17
Attorney, Agent or Firm:
OKUDA Seiji (OKUDA & ASSOCIATES, 10th Floor Osaka Securities Exchange Bldg., 8-16, Kitahama 1-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
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