PISTON FOR INTERNAL COMBUSTION ENGINE - HITACHI AUTOMOTIVE SYSTEMS LTD

Title:

PISTON FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2019/058960

Kind Code:

A1

Abstract:

This piston for an internal combustion engine has a piston head, a pair of piston skirts, and a pair of side walls. Each of the side walls has a pin boss having a piston pin hole therein and is located between the pair of piston skirts. The central longitudinal axis of the piston is designated as a first axis, the axis of the piston pin holes is designated as a second axis, and a plane passing through the first axis and perpendicular to the second axis is designated as a reference plane. In a cross-section of a side wall, which is parallel to both the first axis and the second axis, the distance in the direction of the second axis between the reference plane and the outer peripheral surface of the side wall gradually increases in the direction of the first axis from the piston head side toward the intermediate portion of the side wall and gradually decreases from the intermediate portion to the side opposite the piston head.

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JPH0558857	[Name of device] Piston for diesel engine
WO/2013/184335	INTERNAL COMBUSTION ENGINE HAVING PISTON CONFIGURED FOR REDUCED PARTICULATE EMISSIONS, AND METHOD

Inventors:

HIGASA YUTO (JP)
FUNAHASHI TOSHIYUKI (JP)

Application Number:

PCT/JP2018/032793

Publication Date:

March 28, 2019

Filing Date:

September 05, 2018

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

International Classes:

F02F3/00; F16J1/04

Foreign References:

JP2011132809A	2011-07-07
KR20110098078A	2011-09-01
JP2015132248A	2015-07-23
JP2006057481A	2006-03-02
JP2012031814A	2012-02-16

Attorney, Agent or Firm:

ONO, Shinjiro et al. (JP)

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