Overflow valve, in particular for use in a fuel injection system, high-pressure pump as well as the fuel injection system

摘要

The invention relates to an overflow valve, a high-pressure pump and a fuel injection system with a high-pressure pump (5) for generating an injection pressure, the pumps inlet pressure via an overflow valve (8) is adjustable, having an in a supply port (11) and return connection (12) provided with a valve housing (10) is arranged so as to be longitudinally displaceable piston unit (13) as a valve element with the return connection (12), and the rear by at least one in a spring chamber (15) of the valve housing (10) is accommodated in valve spring (14) for generating jerking motions, the spring space (15) with means for removing there is connected the penetration of fuel in the spring chamber (15) to generate a gas bubble.