How does common rail pressure regulator work?
The pump maintains the rail pressure by continuously delivering fuel to the common rail. This pressure is monitored by a pressure sensor and the difference between the nominal rail pressure value and the measured one is the input signal for the controller.
What is rail pressure control?
The control of rail pressure is quite important in the common rail fuel system. Generally, the rail pressure control strategy is a combination of feedforward control and proportional–integral–derivative feedback control. A lumped parameter model of the common rail fuel system is built.
What regulates the fuel pressure?
The fuel pressure regulator is an engine management component that is found in one form or another on virtually all internal combustion engines. It is a component of the vehicle’s fuel system, and as it’s name implies, is responsible for regulating the pressure of the fuel flowing through the system.
How important is a fuel pressure regulator?
The fuel pressure regulator plays a key role in making sure that the air and fuel mixture within the system remains at the proper level. Without this working, the fuel pump would push too much fuel into the fuel injectors, causing them to fail and not letting enough fuel reach the desired target.
What does a pressure regulator do?
Pressure regulators reduce a supply (or inlet) pressure to a lower outlet pressure and work to maintain this outlet pressure despite fluctuations in the inlet pressure.
What is common rail pressure?
Common rail direct fuel injection is a direct fuel injection system for petrol and diesel engines. On diesel engines, it features a high-pressure (2,000 BAR – 29,000 PSI) fuel rail feeding individual solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors or pump nozzles.
What is a rail sensor?
The fuel rail sensor, commonly referred to as the fuel pressure sensor, is an engine management component that is commonly found on diesel, and some gasoline injected vehicles. It is a part of vehicle’s fuel system and designed to monitor the fuel pressure that is present at the fuel rail.
What is a fuel rail pressure regulator?
The fuel pressure regulator sees that the fuel rail builds up enough pressure to support the vehicle’s fuel injector system with the right amount of fuel. Without the fuel pressure regulator, the fuel will go straight through your car’s system and never reach the injectors.
What is the function of fuel regulator?
A fuel pressure regulator helps maintain the fuel pressure in the Electronic Fuel Injection System. If the system needs more fuel pressure, the fuel pressure regulator allows more fuel to go to the engine.
Do pressure regulators restrict flow?
Pressure regulators are not designed to control flow rates. Although pressure regulators used in flowing systems inherently affect the flow by controlling the pressure, they are not designed to act as flow controllers. Once the pressure reaches the setpoint, the regulator closes and no longer allows flow.
How does a pressure regulator work?
They consist of a spring actuated valve that is directly controlled by a diaphragm assembly. Energy or pressure from the flowing medium works to activate the diaphragm. The increasing downstream pressure acts on the diaphragm, which closes the valve plug by compressing the spring. This closes the valve.
