Hyundai i20 Quiz
Engine/Fuel Control System

Rail Pressure Sensor (RPS) Description and Operation

In this manual: Engine/Fuel Control System
General Information — 17Engine Mechanical System — 79Engine Electrical System — 50Emission Control System — 22Engine/Fuel Control System — 107Clutch System — 27MANUAL TRANSMISSION SYSTEM — 21Drive Shaft and Axle — 18Suspension System — 29Steering System — 21Restraint — 41Braking System — 53Body Work (Interior and Exterior) — 190Body Electrical System — 181Heating, Ventilation and Air Conditioning — 58
~1min read

Description

The Rail Pressure Sensor (RPS), installed on the fuel rail, measures the instantaneous fuel pressure in the delivery pipe. The sensing element (semiconductor element) built into the sensor converts the pressure signal into a voltage, which the ECM uses to accurately control the injection duration and quantity. Furthermore, if the actual rail pressure differs from the target rail pressure based on the sensor output signal, the ECM controls the rail pressure using the fuel pressure control valve.

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