FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel injector for an internal combustion engine. SOLUTION: The injector comprises a shell 2 having two facing terminal portions. The first terminal portion 4 has an inlet 7 for fuel to be supplied, and it is generally designed to extend to the outside of an engine. The second terminal portion 5 has a nozzle 9 communicated with the inlet, and it is designed to be stored in the engine. It has a smaller dimension than the first portion 4 in the direction of deformation. Besides, the injector 1 has an actuator 16 and a servo valve 15 stored in the first terminal portion. The servo valve has an opening/closing element 32. The opening/closing element is axially slidable on a seat portion 27 in a substantially fluid tight condition under the operation of the actuator while receiving the axial resultant pressure of fuel being nearly zero. An fuel inlet is formed sideways in an axially middle position between the actuator and the nozzle. COPYRIGHT: (C)2006,JPO&NCIPI