MPFI systems rely on several sensors to gather crucial data about the engine's operating conditions. It ensures that the injectors receive a consistent fuel supply for accurate fuel delivery. It achieves this by regulating the flow of fuel back to the fuel tank when the pressure exceeds the desired level. The fuel pressure regulator is responsible for maintaining a constant and optimal fuel pressure within the fuel rail. The fuel rail is typically mounted on the intake manifold and connected to the fuel pump and fuel filter. It acts as a distribution channel, ensuring equal fuel pressure to each injector. The fuel rail is a pipe-like component that supplies pressurised fuel to all the injectors. The ECU controls the opening and closing of these injectors based on the information received from the sensors. Each cylinder is equipped with an individual fuel injector that precisely delivers the required amount of fuel into the intake manifold or directly into the combustion chamber. Fuel Injectorsįuel injectors are the heart of the MPFI system. The ECU continuously monitors engine conditions, such as engine speed, intake air temperature, coolant temperature, throttle position, and exhaust gas oxygen content, to adjust the fuel delivery accordingly. It is a microprocessor-based device that receives input from various sensors and calculates the optimal fuel-air mixture for the engine. The Electronic Control Unit is the brain of the MPFI system. Here are the components of the MPFI system. Components of Multi-Point Fuel Injection System Unlike its predecessor, the Single-Point Fuel Injection (SPFI), MPFI utilises individual injectors for each cylinder, allowing for precise control over fuel delivery. Multi-Point Fuel Injection is an advanced technique of injecting fuel into the intake manifold or directly into individual cylinders of an internal combustion engine. What is Multi-Point Fuel Injection (MPFI) System?
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