What are the parts of an Electronic Fuel Injection System?
• Fuel Pump(s) – Delivers Pressurized fuel from tank up to injection valves (injectors) • Fuel Filter(s) – Cleans fuel and removes sediment, dirt, and water • Fuel Pressure Regulator – Sets and keeps fuel pressure at determined value to ensure even and constant delivery values • Fuel Rail – A hollow tube for fuel to flow through and ports for injectors to attach to • Fuel Injector – electrically triggered solenoid valve that opens and closes, turning on and off the supply of fuel to the engine • Throttle Valve – The “butterfly” flap controlled by accelerator linkage that regulates the air flow into an engine • Electronic Control Unit – The computer that controls the fuel injection system (ECU) The ECU receives inputs from various sensors and adjusts injector open time to allow more or less fuel to pass through the injectors. Injector open time is changed by the computer sending a longer or shorter electric pulse to the injector. • Air Flow Meter – A spring loaded flap mounted in the ai
