Injection valve
AssigneeRobert Bosch GmbH
InventorsDieter Vogt, Ferdinand Reiter, Martin Maier
Life of this patent
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Abstract
A fuel injection valve and method in which a valve part consisting of a valve seat body and a support body with injection holes is pushed into a longitudinal orifice of a housing and firmly connected to a wall of the housing with the insertion depth determining the presetting of a valve needle lift. The precise setting of the valve needle lift is made on a fully assembled valve by deforming the valve part between fixing areas of the support body. The injection valve and the method of manufacture of the injection valve are particularly suitable for fuel injection units of mixture compressing engines with externally supplied ignition.
Claims14
A fuel injection valve for fuel injection units of an internal combustion engine, which comprises a housing having a cylindrical longitudinal orifice with a longitudinal axis, a valve seat body (18) supported in said orifice by a valve seat body support (21), said valve seat body including a valve guide orifice and a valve seat juxtaposed an axial passage in a bottom of said valve seat body, a tubular shaped valve needle, which extends within said housing coaxially with said longitudinal orifice, a valve closing body (7) secured on one end of said valve needle which is guided by said valve guide orifice in said valve seat body to seat on said valve seat, said support body (21) being provided with injection orifices (27) bounded by the axial passage within said valve seat body (18), said support body is firmly connected to a bottom surface of said valve seat body and said support body is secured along a circumference thereof to a wall of said longitudinal orifice of said housing.
Dependencies are inferred from the claim text.