What are the components of a fuel injection system?
Abstract: The fuel injection system can be divided into low-pressure and high-pressure sides. The low-pressure components include the fuel tank, fuel supply pump and fuel filter. The high-pressure side components include a high pressure pump, accumulator, fuel injector and fuel injector nozzle.
What are the components of fuel system in petrol engine?
The basic fuel supply system in a petrol engine consists of a fuel tank, furl lines, fuel pump, fuel filters, air cleaner, carburetor and inlet manifold. The system responsible for preparing the correct mixture of air and fuel, and directing this mixture to each of the cylinders is known as “Induction System”.
What controls the fuel injection system?
Electronic Control Unit (ECU) The ECU is the brain of the operation. It uses engine RPM and signals from different sensors to meter the fuel. It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.
What is fuel injector system?
A fuel injection system is a mechatronic circuit that is the combination of mechanical and electronic circuits to supply fuel of ideal volume into the engine. Since the fuel injection system is such a vital component, engineers around the globe have evolved it to its most efficient and effective version.
What is the main component of fuel?
Many fuel gases are composed of hydrocarbons (such as methane or propane), hydrogen, carbon monoxide, or mixtures thereof.
How does the ECM control the fuel injection amount?
The ECU determines the amount of fuel to inject based on a number of sensor readings. Oxygen sensors tell the ECU whether the engine is running rich (too much fuel or too little oxygen) or running lean (too much oxygen or too little fuel) as compared to ideal conditions (known as stoichiometric).
What are the four basic types of fuel injection system?
The fuel injection types used in newer cars include four basic types:
- Single-point or throttle body injection.
- Port or multipoint fuel injection.
- Sequential fuel injection.
- Direct injection.
What are the two basic fuel injection systems?
Gas engines can use gasoline direct injection, where fuel is directly delivered into the internal combustion chamber. Indirect injection can also be use, where the fuel is mixed with air before the intake stroke.
What sensors are needed for EFI?
EFI Controls and Sensors
- Throttle Position Sensor (TPS) The TPS mounts to the end of the throttle shaft.
- Manifold Absolute Pressure (MAP) Sensor.
- Mass Air Flow (MAF) Sensor.
- Oxygen (O2) Sensor.
- Intake Air Temperature (IAT) Sensor.
- Engine Coolant Temperature (ECT) Sensor.
- Knock Sensor.
- Idle Air Control (IAC) Valve/Actuator.