Fuel-injection valve for internal combustion engines

Abstract

A fuel injection valve with a valve body (1), whose end oriented toward the combustion chamber is provided with a pressure chamber (26), which is connected to a supply conduit (7). The pressure chamber (26) is defined by a valve member (20) whose valve sealing surface (18) rests against a stationary valve seat (17) with an internal tension and can be lifted up from this valve seat by the pressure in the pressure chamber (26). Downstream of the unblocked opening cross section, there is at least one injection opening (12) into the combustion chamber of the engine. The valve member (20) is embodied as essentially disk-shaped and the valve sealing surface (18) is embodied in its radially outer edge region and can be lifted up from the valve seat (17) in an elastic manner. In its center region, the valve member (20) is prestressed toward its contact with the valve seat (17) by a securing element (22) on the valve body (1) (FIG. 2).

Dependencies are inferred from the claim text.