FUEL PRESSURE RELIEF VALVE [SKYACTIV-D 2.2]
id0114z7707800
Purpose, Function
• If the pressure in the common rail exceeds a certain value, fuel is discharged to assure safety.
Construction
• The fuel pressure relief valve is installed to the common rail.
• The fuel pressure relief valve consists of a spring, ball, and plunger.
Operation
• According to the control signal from the PCM, the coil is energized and the plunger is operated to open the fuel passage.
• The fuel passage opens and the pressure in the common rail flows to the lower case side.