CRANKSHAFT FOR RECIPROCATING ENGINE - NIPPON STEEL & SUMITOMO METAL CORP

Title:

CRANKSHAFT FOR RECIPROCATING ENGINE

Document Type and Number:

WIPO Patent Application WO/2015/056440

Kind Code:

A1

Abstract:

A crankshaft is provided with a journal section (J) that serves as a central axis of rotation, a pin section (P) that is eccentric with respect to the journal section (J), and a crank arm section (A) that connects the journal section (J) and the pin section (P). All or part of the crank arm section (A) integrally comprises a counterweight section. An edge section (11) follows the outline of the surface of the crank arm section (A) on the journal section (J) side thereof, and a recessed section (10) is formed along the edge section (11) on the inner side thereof. As a result, it is possible to decrease the weight of the crankshaft and improve torsional rigidity while improving bending rigidity.

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Inventors:

ISHIHARA KOICHIRO (JP)
IMANISHI KENJI (JP)
YOSHINO KEN (JP)
YABUNO KUNIHIRO (JP)

Application Number:

PCT/JP2014/005198

Publication Date:

April 23, 2015

Filing Date:

October 14, 2014

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

F16C3/08

Foreign References:

US4356741A	1982-11-02
JP2010230027A	2010-10-14
JPH024018U	1990-01-11
JPH0411913U	1992-01-30
FR2162770A5	1973-07-20
JP2000320531A	2000-11-24
JP4998233B2	2012-08-15
JP2004538429A	2004-12-24
JP2004538430A	2004-12-24
JP2012007726A	2012-01-12
JP2010230027A	2010-10-14

Other References: