Stroke-controlled valve as a fuel metering device of an injection system for internal combustion engines

A lift-controlled valve as a fuel metering device of an injection system for an internal combustion engine, comprising:

• a valve body having a graduated coaxial recess;
• a valve seat formed in the graduated coaxial recess;
• a spring;
• a valve needle that is actuated axially against a resistance of the spring, the valve needle being situated in the graduated coaxial recess and interacting with the valve seat in order to control a fuel injection process;
• a high-pressure area connected to an assigned injection nozzle and located upstream from the valve seat;
• a low-pressure area located downstream from the valve seat opening out into a fuel return flow;
• and
• a low-pressure equalizing piston that coaxially adjoins the valve, the low-pressure equalizing piston being fixedly connected to the valve needle,
• wherein:
• a first control edge is formed on the low-pressure equalizing piston,
• the first control edge interacts with a second control edge on the graduated coaxial recess in an area of the fuel return flow in such a way that a throttle cross-section that is dependent on a lift is formed between the first control edge and the second control edge, and
• the first control edge and the second control edge are coordinated in such a way that the throttle cross-sectional area reaches a maximum value with the valve closed and a minimum value with the valve open.