CAST IRON CYLINDER LINER, AND INTERNAL COMBUSTION ENGINE

Title:

CAST IRON CYLINDER LINER, AND INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2020/022032

Kind Code:

A1

Abstract:

The present invention addresses the problem of reducing friction and imparting excellent seizure resistance. Provided is an internal combustion engine comprising: a cast iron cylinder liner having an inner circumferential sliding surface made of cast iron; and a cylinder bore having an inner circumferential sliding surface made of cast iron, wherein the inner circumferential sliding surface includes a region satisfying expressions (1)-(3) below. (1): Rvk/Rk≥1.0, (2): 0.08 μm≤Rk≤0.3 μm, (3) Rk-Rpk>0 (In expressions (1)-(3), Rk is the roughness depth in a core section according to JIS B0671-2:2002, Rpk is the protruding peak height according to JIS B0671-2:2002, and Rvk is the protruding valley depth according to JIS B0671-2:2002.)

Inventors:

KAWAI KIYOYUKI (JP)
AMAIKE SHINJI (JP)
NANGO TETSUYA (JP)
TAMAKI SEIJI (JP)
HOSHINO SEEROKU (JP)
SUZUKI WATARU (JP)
OIZUMI TAKASHI (JP)
YAGUCHI HIROSHI (JP)
SUZUKI TAKASHI (JP)

Application Number:

PCT/JP2019/026763

Publication Date:

January 30, 2020

Filing Date:

July 05, 2019

Export Citation:

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Assignee:

TPR CO LTD (JP)
TPR IND CO LTD (JP)

International Classes:

F02F1/00; F02F5/00; F16J10/00

Foreign References:

DE102007017977A1	2008-06-05
CN103341730A	2013-10-09
JP2018053898A	2018-04-05
JP2002295304A	2002-10-09
JP2017110804A	2017-06-22
JP2003286895A	2003-10-10
JP2004116707A	2004-04-15
JP4984214B2	2012-07-25
JP4954644B2	2012-06-20
JP2012012957A	2012-01-19
JP4678802B2	2011-04-27
JP2860537B2	1999-02-24

Other References: