High pressure fuel pump for internal combustion engine

The invention provides a high pressure fuel pump which comprises: a reciprocating plunger (2); a pump body (1) in which a pressurization chamber (12) is formed; and a cylinder (20) which is fixed to the pump body (1) for slidably holding the plunger (2), and which is adapted to suck fuel into the pr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ODAKURA, HIROSHI, YAMADA, HIROYUKI, ONOSE, TORU, SAITO, ATSUJI, ABE, MASAMI, USUI, SATOSHI, KOTAKI, MASAYOSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a high pressure fuel pump which comprises: a reciprocating plunger (2); a pump body (1) in which a pressurization chamber (12) is formed; and a cylinder (20) which is fixed to the pump body (1) for slidably holding the plunger (2), and which is adapted to suck fuel into the pressurization chamber (12) through a suction valve (5) and to pressurize the sucked fuel to discharge the pressurized fuel from a discharge valve (6) in response to operation of the plunger (2). An annular groove is formed between sliding surfaces of the cylinder (20) and the plunger (2), and the plunger (2) is configured so that the plunger (2) is projected beyond an end portion of the cylinder (20) facing the pressurization chamber (12).