Attaching method of fuel rail assembly for direct-injection engine

The present invention provides an ATTACHING METHOD OF a FUEL RAIL ASSEMBLY FOR a DIRECT-INJECTION ENGINE. An injector (20) comprises a cylindrical body portion (21), a holding ring (23), and a small-diameter cylindrical portion (22), wherein the holding ring is arranged between a conical surface (21...

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Bibliographische Detailangaben
Hauptverfasser:	UOTANI YUZO, MIYATA TAKASHI, TAKASAKI NOBUAKI, YAMASHITA SHIGEKI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides an ATTACHING METHOD OF a FUEL RAIL ASSEMBLY FOR a DIRECT-INJECTION ENGINE. An injector (20) comprises a cylindrical body portion (21), a holding ring (23), and a small-diameter cylindrical portion (22), wherein the holding ring is arranged between a conical surface (21a) and the cylinder cover side seat portion (9) of a cylinder cover. There are provided an assembly forming step of forming a fuel rail assembly by inserting the injectors into respective cup portions via spring members for reaction force absorption, a press inserting step of pressing and inserting respective tip-side portions of the injectors by pressing pressure-receiving portions such that the respective spring members are compressed up to a middle compressive state thereof with a pressing movable apparatus which is capable of pressing the pressure-receiving portions of a fuel rail via respective pressing springs, and a fastening step of fastening plural boss portions concurrently to a cylinder head in a state i