Pressure relief valve for use with injection system of internal combustion engine, is provided with high-pressure pump, which has working chamber, which is connected with metering unit by suction valve

摘要

#CMT# #/CMT# The pressure relief valve (13) is provided with a low-pressure pump (2), a high pressure pump, a metering unit (12) and a high-pressure accumulator (17). The high-pressure pump has a working chamber (11), which is connected with a metering unit by a suction valve (20) and with the high-pressure accumulator by a check valve (16). An opening pressure of the overflow valve is higher than the sum of opening pressure of the suction valve and the check valve in pump idle condition. #CMT#USE : #/CMT# Pressure relief valve for use with an injection system of an internal combustion engine. #CMT#ADVANTAGE : #/CMT# The pressure relief valve is provided with a low-pressure pump, a high pressure pump, a metering unit and a high-pressure accumulator, where an opening pressure of the overflow valve is higher than the sum of opening pressure of the suction valve and the check valve in pump idle condition, and hence ensures safe filling of the high-pressure pump, and economical pressure relief valve. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a fuel injection device with a high pressure pump. 2 : Low-pressure pump 11 : Working chamber 12 : Metering unit 13 : Pressure relief valve 16 : Check valve 17 : High-pressure accumulator 20 : Suction valve.