Electromagnetically actuatable valve
AssigneeRobert Bosch GmbH
InventorHeinrich Knapp
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AssigneeRobert Bosch GmbH
InventorHeinrich Knapp
Estimating the term…
An electromagnetically actuatable valve is proposed, which serves in particular to inject fuel into the intake tube of internal combustion engines operating with fuel injection systems. The fuel injection valve includes a valve housing, a core, a magnetic coil and a cylindrical armature which is connected via a rod-like connecting part having a smaller cross section than the armature with a valve closing member embodied in the form of a ball. The valve closing member cooperates with a valve seat provided in a valve seat body. The radial guidance of the armature is effected by a narrow annular disk. The valve closing member is radially guided only by the valve seat in its closed position and by a stop in its open position. Downstream of the valve seat fuel guide bores lead into a preparation bore in the form of a blind bore, which has a diameter of approximately 1 mm.
An electromagnetically actuatable fuel injection valve, for fuel injection systems of internal combustion engines, comprising a valve housing having a linear axis, a core, a magnetic coil and a cylindrical armature radially guided by an annular disk, said armature being rigidly connected via a rod-like connecting part to a spherical valve closing member, said spherical valve closing member cooperates with a valve seat formed by an axially disposed valve seat body, said valve closing member being guided in its closing position by said rod-like connecting part and by said valve seat and in its open position during excitation of said magnetic coil by a stop means with a curved end surface substantially the same curvature of said valve closing member which limits an upward stroke movement of said valve closing member and further wherein said valve closing member is urged in a closing direction by a closing force of a closing spring seated on a spring plate means having an end surface with the curvature of said spherical valve closing member seated on a surface of said valve closing member juxtaposed said stop means.
Dependencies are inferred from the claim text.