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Which of the following components are installed on the fuel rail manifold?

a) Fuel pressure sensor
b) Fuel differential pressure switch
c) Fuel temperature sensor
d) Suction control valve

Answer :

In an automotive fuel system, the fuel rail manifold plays an essential role in distributing fuel to the engine's injectors. Various components are installed on the fuel rail manifold to monitor and control the system's performance.

The components specifically mentioned and their roles are as follows:

  1. Fuel Pressure Sensor: This is the correct answer. The fuel pressure sensor is typically installed on the fuel rail. It measures the pressure of the fuel within the rail and sends this information to the engine control unit (ECU). The ECU uses this data to adjust the fuel delivery and ensure optimal engine performance.

  2. Fuel Differential Pressure Switch: Although different types of pressure switches may be used in fuel systems, the differential pressure switch is not typically a part of the fuel rail manifold's standard components.

  3. Fuel Temperature Sensor: This sensor might be found in some fuel systems, but it is not commonly mounted directly on the fuel rail manifold. Its role is to measure the temperature of the fuel to ensure proper combustion.

  4. Suction Control Valve: This component is usually found in the fuel pump or high-pressure fuel pump assembly, not on the fuel rail manifold. It regulates the amount of fuel being supplied to the high-pressure section of the fuel pump, thereby influencing the rail pressure.

Therefore, among the given options, the component typically installed on the fuel rail manifold is a) Fuel pressure sensor. This sensor ensures that the system operates within the correct parameters by providing real-time data to manage fuel injection precisely.

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