INJECTION DEVICE, INJECTION HOLE MEMBER MANUFACTURING DEVICE, AND INJECTION HOLE MEMBER MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an injection device having an injection hole member in which only an injection amount is regulated without changing an injection direction. SOLUTION: Injection holes 22 are formed in the flat plate part 21 of the injection hole member 20. The injection hole diameters of the injection holes are identical to each other, and gradually diverged from an inlet side toward an outlet side. In a virtual plane including injection hole axes 110 and orthogonal to the flat plate part 21, the inner wall surface 23 of the flat plate part forming the injection holes 22 and the virtual flat surface cross two injection hole crossing lines 114 and 116. The virtual flat surface and a fuel inlet side end face 24 forming the fluid inlet side end face of the flat plate part 21 cross two inlet crossing lines 120 and 122. An angleαformed by the injection hole crossing line 114 and the inlet crossing line 120 is an acute angle, and an angleβformed by the injection hole crossing line 116 and the inlet crossing line 122 is an acute angle. A recessed part 26 includes the inlet opening peripheral edges of the injection holes 22 on the inlet peripheral angleαside of the injection holes 22 in the flat plate part 21 and formed by press working. COPYRIGHT: (C)2004,JPO