141 ENGINE2.2LDICOR Fig. 230 Pump inlet Pump Outlet Venturi Inlet metering valve Fuel temperature sensor Fig. 231 7. Fuel TemperatureSensor (FTS) (Fig. 231) This sensor monitors the temperature of fuel entering in the HP pump. The fuel temperature sensor measures fuel temperature on the pump hydraulic head in the low pressure circuit, between the transfer pump outlet and the inlet to the HP pumping stage. This sensor information issued tomodify rail pressure control, injection etc. 8. Inlet Metering Valve (IMV) (Fig. 231) This controls fuel flow into pumping element in order to control rail pressure. This sensor is in built with HP Pump. 9. Venturi (Fig. 231) It is an integral part of High pressure pump. It has inlet & outlet connections. One connection comes from injector back leak circuit & the other connection goes to the fuel tank (return Line), in between there is a "T" connector which goes to the fuel filter.
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