Fuel injection valve
AssigneeRobert Bosch GmbH
InventorFerdinand Reiter
Life of this patent
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Abstract
A fuel injection valve for internal combustion engines is already known in which the valve seat body is produced by multiple complicated work processes. In the novel valve, a valve seat body of simple design that can be made economically is used. The valve seat body (16) is made from sheet metal by stamping and deep drawing and has a cup shape with a bottom (19) of the seat body and an annular edge (20) of the seat body. A valve seat (24) is formed in the bottom (19) of the seat body. An injection port disk (34) is joined by welding to the valve seat body (16). The fuel injection valve is especially suitable for fuel injection systems of mixture-compressing internal combustion engines with externally supplied ignition (FIG. 1).
Claims4
A fuel injection valve for internal combustion engines comprising a valve housing, a movable valve closing body, which cooperates with a valve seat (24) that is embodied on a valve seat body (16) and downstream merges with an outflow opening, the valve seat body (16), comprising sheet metal, has a cup-shape produced by deep drawing and has a bottom (19) of the seat body and an annular edge (20) of the seat body extending axially from said bottom (19), the valve seat (24) is formed on an upper bottom face (21), toward the annular edge (20) of the seat body, of the bottom (19) of the seat body, and said upper bottom face (21) is embodied as a flat surface between the annular edge (20).
Dependencies are inferred from the claim text.