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1. CN110268151 - PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR

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Office
China
Application Number 201880009933.3
Application Date 02.02.2018
Publication Number 110268151
Publication Date 20.09.2019
Publication Kind A
IPC
F02F 3/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
10having surface coverings
12on piston heads
F02B 23/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
08with positive ignition
10with separate admission of air and fuel into cylinder
F02F 3/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
F02F 3/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
10having surface coverings
CPC
F02B 23/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
08with positive ignition
10with separate admission of air and fuel into cylinder
F02F 3/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons 
10having surface coverings
12on piston heads
F02B 23/0639
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
02with compression ignition
06the combustion space being arranged in working piston
0636the combustion space having a substantially flat and horizontal bottom
0639the combustion space having substantially the shape of a cylinder
F05C 2251/048
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
2251Material properties
04Thermal properties
048Heat transfer
Y02T 10/12
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
10Internal combustion engine [ICE] based vehicles
12Improving ICE efficiencies
F02F 2200/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
2200Manufacturing
Applicants HITACHI AUTOMOTIVE SYSTEMS LTD
日立汽车系统株式会社
Inventors SUKEGAWA YOSHIHIRO
助川义宽
TAKAHASHI NORIKAZU
高桥智一
SUGIMOTO ITTOU
杉本一等
Agents 上海华诚知识产权代理有限公司 31300
Priority Data 2017022274 09.02.2017 JP
Title
(EN) PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFOR
(ZH) 内燃机用活塞及其制造方法
front page image
Abstract
(EN) Provided is a piston for an internal combustion engine, the piston enabling both an improvement in heat efficiency and a reduction in emissions, and enabling the prevention of overheating of the piston to prevent the occurrence of knocking, pre-ignition, and a drop in air filling efficiency. This piston (100a) for an internal combustion engine constitutes a portion of a combustion chamber (9) of an internal combustion engine (200) and includes a substrate (103), a first film (101) provided on a section of the top surface of the substrate (103) contacting the combustion chamber (9), and a second film (102) provided on another section of the top surface. The piston for the internal combustion engine is characterized in that: the first film (101) has a lower heat conductivity and heat capacity than the substrate (103), and the second film (102) has a lower heat conductivity than the substrate (103) and a higher heat capacity than the first film (101).
(ZH) 本发明提供一种能够兼顾热效率的提高和污染物的减少、而且能防止活塞的过热而防止爆震、早燃的发生以及空气填充效率的降低的内燃机用活塞。本发明的内燃机用活塞(100a)构成内燃机(200)的燃烧室(9)的一部分，该活塞(100a)的特征在于，具有：基材(103)；第1膜(101)，其设置在基材(103)的与燃烧室(9)接触的顶面的一部分；以及第2膜(102)，其设置在顶面的其他部分,第1膜(101)的热导率及热容量小于基材(103)，第2膜(102)的热导率小于基材(103)，而且热容量大于第1膜(101)。
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