SOLENOID-OPERATED FUEL INJECTION VALVE

• Main Authors: OWADA HISASHI, ISHIKAWA TORU
• Format: Patent
• Language: English
• Published: 24.04.2008
• 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

PROBLEM TO BE SOLVED: To absorb radial bending load caused by axial eccentricity between a mounting hole of an engine and a delivery pipe when mounting a cylinder fuel injection type injector to the engine. SOLUTION: A fuel lead-in pipe part 16 is disposed between a fuel lead-in port 26 of the injector 1 and an upper part (upstream) of a fixed core 15. A plurality of grooves 16a is formed at an intermediate part of the fuel lead-in pipe part 16 at a lower part (downstream) of a seal ring 18 and a backup ring 17 provided near the fuel lead-in port 26 to prevent a leakage of fuel from a connecting hole B of fuel piping. The radial bending load caused by axial eccentricity between the cylinder block mounting hole A and the delivery pipe B in mounting the engine is absorbed by a flexible part formed of the plurality of grooves 16a. A structure of not transmitting the radial bending load to a valve seat 22 and a movable valve 8 of the injector 1 is provided to form the injector stable in the injected fuel injection flow and spraying shape. COPYRIGHT: (C)2008,JPO&INPIT