| 摘要 |
<p>[Object] To provide core supporting hole 31 which is also used for discharging gas during casting, at a central portion of cylinder head 1 by modifying arrangement of clamps 21. [Construction] Fuel injection valves 3 each inserted into injection valve mounting holes 2 are fixed to cylinder head 1 through bifurcated clamps 21. Clamps 21 each include base portion 22 brought into abut contact with and supported on middle bolt 14a which is disposed at the middle portion of cam bracket 13, bifurcated tip end portion 23 pressing fuel injection valve 3, and intermediate portion 24 fastened by bolt 25 having a tip end portion which is screwed into cylinder head 1. Four clamps 21 are arranged on a straight line along a direction of a row of cylinders. Respective clamps 21 corresponding to cylinders #1 and #2 and respective clamps 21 corresponding to cylinders #3 and #4 are arranged symmetrically with each other such that base portions 22 are disposed on an outside. Core supporting hole 31 is disposed at a central portion of cylinder head 1 which is free from coverage by clamp 21. With this construction, it is possible to effectively release gas.</p> |
