Title:
COMBINATION OF CYLINDER BORE AND PISTON RING
Document Type and Number:
WIPO Patent Application WO/2015/041215
Kind Code:
A1
Abstract:
[Problem] In order to provide a combination of a cylinder bore and a piston ring using a cylinder bore spraying technique that can utilize an aluminum alloy cast made by normal die casting, and that has exceptional scuffing resistance and abrasion resistance and low friction loss even in severe sliding conditions with an engine subjected to a high load, an iron-based sprayed film formed on a face of a cylinder bore of an internal combustion engine that slides against a piston ring is combined with a hard carbon film formed on an outer peripheral sliding face of the piston ring, the iron-based sprayed film having an Rpk value in a surface roughness curve of less than 0.20 μm, and the hard carbon film having an Rpk value in a surface roughness curve of less than 0.15 μm.
Inventors:
SHINOHARA AKIO (JP)
MORONUKI MASAKI (JP)
MORONUKI MASAKI (JP)
Application Number:
PCT/JP2014/074443
Publication Date:
March 26, 2015
Filing Date:
September 16, 2014
Export Citation:
Assignee:
RIKEN KK (JP)
International Classes:
F02F1/00; C23C4/06; C23C28/00; C23C28/04; F02F5/00; F16J9/26; F16J10/00
Foreign References:
| JP2004100645A | 2004-04-02 | |||
| JP2006144100A | 2006-06-08 | |||
| JP2006057674A | 2006-03-02 | |||
| JPH07243528A | 1995-09-19 | |||
| JP2006275269A | 2006-10-12 | |||
| JP2003286895A | 2003-10-10 | |||
| JP2005273654A | 2005-10-06 | |||
| JP2001280497A | 2001-10-10 | |||
| JP2004100645A | 2004-04-02 | |||
| JP2002235852A | 2002-08-23 | |||
| JP2010275581A | 2010-12-09 |
Other References:
See also references of EP 3048287A4
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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