SINTERED CU ALLOY BEARING OF RECIRCULATION EXHAUST GAS FLOW RATE CONTROL VALVE, OR THE LIKE, OF EGR INTERNAL COMBUSTION ENGINE HAVING HIGH STRENGTH AND EXHIBITING EXCELLENT ABRASION RESISTANCE IN HIGH-TEMPERATURE ENVIRONMENT

Title:

Document Type and Number:

WIPO Patent Application WO/2006/022337

Kind Code:

A1

Abstract:

[PROBLEMS] To provide a sintered Cu alloy bearing of recirculation exhaust gas flow rate control valve of EGR internal combustion engine having high strength and exhibiting excellent abrasion resistance in high-temperature environment. [MEANS FOR SOLVING PROBLEMS] There is provided a bearing of austenite stainless steel reciprocating shaft for operation of a recirculation exhaust gas flow rate control valve of EGR internal combustion engine, which bearing is comprised of a sintered Cu alloy having a composition of, by mass, 10 to 30% Ni, 5 to 12% Sn, 3 to 10% C, 0.1 to 0.9% P and the balance of Cu and unavoidable impurities, or having such a structure that free graphite is dispersed and distributed in a basis of Cu-Ni-Sn-P solid solution.

Inventors:

SHIMIZU TERUO (JP)
MARUYAMA TUNEO (JP)

Application Number:

PCT/JP2005/015448

Publication Date:

March 02, 2006

Filing Date:

August 25, 2005

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)
SHIMIZU TERUO (JP)
MARUYAMA TUNEO (JP)

International Classes:

C22C9/06; B22F5/00; C22C1/05; C22C1/10; C22C9/02; F16C33/12; (IPC1-7): C22C9/06; B22F5/00; C22C1/05; C22C1/10; C22C9/02; F16C33/12

Foreign References:

JPH03232905A	1991-10-16
JP2000309807A	2000-11-07
JP2004068074A	2004-03-04
JP2001107162A	2001-04-17

Other References: