HIGH PRESSURE FUEL SUPPLY PUMP

PROBLEM TO BE SOLVED: To make wear and seizure hard to occur on the sliding faces of a sliding mechanism part of a high pressure fuel supply. SOLUTION: In the high pressure fuel supply pump, wear resistant and seizure resistant coatings are formed on member surfaces which slide in contact with each...

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Bibliographic Details
Main Authors SUGANAMI MASAYUKI, OGINUMA TAKANORI, NEMOTO MASAFUMI, FUJITA TOYOHISA, MUNAKATA AKIHIRO, HIMOTO TORU, KAGIYAMA ARATA
Format Patent
LanguageEnglish
Published 08.09.2011
Subjects
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To make wear and seizure hard to occur on the sliding faces of a sliding mechanism part of a high pressure fuel supply. SOLUTION: In the high pressure fuel supply pump, wear resistant and seizure resistant coatings are formed on member surfaces which slide in contact with each other. Specifically, in the high-pressure fuel supply pump, one of the sliding faces which slide in contact with each other has a hardened layer consisting of one of a nitrided layer and a carbonitrided layer, and the other sliding face opposing to the above sliding surface has a high-hardness carbon based coating. Preferably, Fe3N (a white compound layer) remains in the nitrided layer or the carbonitrided layer having no high-hardness carbon based coating. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20100039536