Fuel metering pump for a heater, especially an additional heater or a parking heater of a motor vehicle

摘要

The present invention relates to a fuel metering pump (1) of prior art comprising a solenoid coil (2), an anchor (3), a delivery piston (4) and spring-loaded valves. According to the invention, the spring-loaded valves are embodied as an electrically controlled suction valve (5) and an electrically controlled delivery valve (6). The solenoid coil (2) is provided for the anchor (3) of the delivery piston (4), the anchor (7) of the suction valve (5) and the anchor of the delivery valve (6), whereby the masses, springs and hydraulic cross-sections of the component parts are dimensioned in such a manner that the valves switch more quickly than the delivery piston moves.