Cast iron cylinder liner and internal combustion engine

Japan Patent

APP PUB NO JP-2020016186-A
SERIAL NO

2018139942

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Abstract

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To provide a cast iron cylinder liner which reduces friction and has excellent seizure resistance.SOLUTION: In an internal combustion engine comprising a cast iron cylinder liner including an inner peripheral sliding surface consisting of cast iron and a cylinder bore including an inner peripheral sliding surface consisting of cast iron, the inner peripheral sliding surface includes a region satisfying following formulas (1) to (3): formula (1) Rvk/Rk≥1.0; formula (2) 0.08 μm≤Rk≤0.3 μm; and formula (3) Rk-Rpk>0 [in the formulas (1) to (3), Rk is a level difference of a core part on the basis of JIS B0671-2:2002, Rpk is a protruding crest height on the basis of JIS B0671-2:2002, and Rvk is a protruding valley depth on the basis of JIS B0671-2:2002].SELECTED DRAWING: Figure 1

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Patent Owner(s)

Patent OwnerAddress
TPR CO LTDNot Provided

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Inventor(s)

Inventor Name Address
SUZUKI TAKASHI C/O KOITO SEISAKUSHO CO LTD SHIZUOKA FACTORY NO 500 KITAWAKI SHIMIZU SHIZUOKA
YAGUCHI HIROSHI 2723-1 KAMIISHIDA OHOKA NUMAZU-SHI SHIZUOKA-KEN
TAMAKI SEIJI -
SUZUKI WATARU -
KAWAI KIYOYUKI KABUSHIKI KAISHA TOSHIBA 1-1 SHIBAURA 1-CHOME MINATO-KU TOKYO 105
HOSHINO SEIROKU -
OIZUMI TAKASHI -
AMACHI SHINJI -
NANGO TETSUYA -

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