HEAT-INSULATING MEMBER AND ENGINE COMBUSTION CHAMBER STRUCTURE

Title:

HEAT-INSULATING MEMBER AND ENGINE COMBUSTION CHAMBER STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2013/129430

Kind Code:

A1

Abstract:

Provided are a heat-insulating member for improving engine thermal efficiency and improving fuel consumption, and an engine combustion chamber structure. The heat-insulating member (1) includes a substrate (5), a heat-insulating porous layer (3), and a surface dense layer (2). The substrate (5), the heat-insulating porous layer (3), and the surface dense layer (2) are formed from ceramics. The surface dense layer (2) has a porosity of no more than 5%. The heat-insulating porous layer (3) has a greater porosity than the surface dense layer (2). The substrate (5) has sufficient mechanical strength to exist independently. The heat-insulating member (1) is fixed to a piston (14), by mechanical fixing such as screwing, or chemical fixing by brazing.

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Inventors:

TOMITA TAKAHIRO (JP)
ICHIMURA MIKIYA (JP)
HASHIMOTO SHIGEHARU (JP)

Application Number:

PCT/JP2013/055021

Publication Date:

September 06, 2013

Filing Date:

February 26, 2013

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)

International Classes:

C04B41/89; F01L3/02; F02F1/24; F02F3/00; F16J1/01

Foreign References:

JPH07300374A	1995-11-14
JP2008533349A	2008-08-21
JPH03281936A	1991-12-12
JPS61268850A	1986-11-28
JPH08284666A	1996-10-29
JP2010249008A	2010-11-04
JP2011052630A	2011-03-17
JPS63230947A	1988-09-27

Other References: