Patent ID: 7337986

Claim:
A fuel injection valve comprising; a valve seat comprising a valve seat surface defining a conical flow path including a conical surface that gradually decreases in diameter in the direction of flow of fuel, and an injection port with a cylindrical surface including a central axis slanted with respect to the central axis of said conical flow path; a valve member having a substantially conical tip for contacting and separating with respect to said valve seat surface to control supply of fuel into said injection port; and an actuator for actuating said valve member, wherein, an intermediate flow path having a cylindrical surface coaxial to said conical flow path is provided between said conical flow path and said injection port; and a portion of said cylindrical surface of said injection port is connected to said conical surface of said conical flow path and another portion of said cylindrical surface of said injection port is connected to said cylindrical surface of said intermediate flow path; whereby generation of stagnation of flow of fuel is suppressed.