SCV Suction Control Valves

Precise Fuel Flow Regulation

The SCV's primary function is to act as a metering device at the inlet of the high-pressure fuel pump. By adjusting its opening based on electronic signals from the Engine Control Unit (ECU), it precisely controls the volume of fuel allowed into the pump, directly determining the pumping capacity and the resulting pressure generated.

Dynamic Rail Pressure Control

This regulated fuel flow is the fundamental mechanism for controlling common rail pressure. By varying the fuel supply to the pump, the SCV enables the system to achieve the exact high pressure required by the ECU for different engine loads and speeds, ensuring optimal injector operation.

Ensuring Engine Performance and Efficiency

Through its precise control, the SCV ensures the engine receives the correct fuel pressure for clean and efficient combustion. This is vital for delivering optimal power, smooth operation across the entire RPM range, improved fuel economy, and lower emissions.