What is a fuel pressure reducing valve?

Proportional valve for oil intake. Oil measurement unit, also known as proportional valve, Bosch measurement unit is abbreviated as ZME or MPROP, Delphi is abbreviated as IMV, and Denso is abbreviated as PCV. The high-pressure oil pump has an imported metering proportional valve, abbreviated as MPROP or ZME, to control the amount of oil entering the high-pressure oil rail.