Patent ID: 6666389
Filing Date: 2003-12-23
Classification: F02M

Abstract:
A fuel injection valve comprising:a housing pipe; a body valve movable reciprocatingly and axially inside the housing pipe; and a body valve having a bottom wall constituting a valve seat with which the valve comes in contact and a side wall whose axial end is connected to a circumferential periphery of the bottom wall and the other axial end is fitted to and heat bonded to an end of the housing pipe, the side wall being provided midway between the axial end and the other axial end thereof with a recess that is formed in advance before the body valve and the housing pipe are heat bonded to each other and serves to prevent a deformation of the side wall due to heat generated by the heat bonding from being transmitted straight to the valve seat; wherein at least a part of the side wall of the body valve is exposed outside of the housing pipe, and the recess is formed on the side wall of the exposed part of the body valve so that the recess is not covered by the housing pipe.