| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve stably injecting thin-film-like fuel. SOLUTION: The fuel injection valve includes: a valve seat having a fuel passage and a valve seat part therein; a valve member having an abutment part which can be seated on the valve seat part, wherein the abutment part is separated from/seated on the valve seat part to open/close the fuel passage; and an injection hole plate forming a fuel chamber, which communicates with the fuel passage, between the injection hole plate and the valve seat, and having a slit-like injection hole. When a length of a long-side direction of the slit-like injection hole is L, a short-side direction of the slit-like injection hole is S, and a height of the fuel chamber located immediately above the slit-like injection hole is H, relations of 1<L/S<12 and H/S<10 are satisfied. COPYRIGHT: (C)2011,JPO&INPIT |
