| 摘要 |
PROBLEM TO BE SOLVED: To prevent a start failure and an engine trouble caused by a defective air-fuel ratio caused by hardening and an increase of viscosity at a low temperature of a plasticizer and oil adhering on a surface of an injector seat. SOLUTION: In this injector, a flow rate adjusting screw 4 is disposed at the center of a coil holder 3 holding an electromagnetic coil 1 and disposed in an outer case 2, an injector valve element 6 is disposed at a lower end via a spring body 5 in an axial direction so as to be reciprocative, the injector valve element is moved up and down by turning the electromagnetic coil 1 on and off based on a command from an ECU via a lead wire connected to a connector 7, the injector valve element 6 is seated on and separated from an injector seat 11 of a valve seat 10 held by a valve seat holder 9 including a fuel path hole 8 oppositely disposed at a lower side, and fuel sent from a fuel inlet 12 is sent to the fuel path hole 8 intermittently at a prescribed interval. An electric heater 13 is provided at the valve seat 6. COPYRIGHT: (C)2010,JPO&INPIT |
