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What is fuel injection control?
An electronic fuel injection control system adapted for combination with a fuel injection valve, which comprises means for regulating the valve opening pressure of the injection nozzle of the fuel injection valve, means for regulating the injection timing of the injection nozzle, means for detecting the operating …
How is fuel injection control done?
The amount of fuel injected is controlled by a flap valve located in the engine’s air intake. The fuel then squirts out into the inlet port in the cylinder head. Each injector contains a spring-loaded valve that is kept closed by its spring pressure. The valve only opens when the fuel is squirted in.
What determines the fuel quantity injected?
However, an estimated fuel injection quantity, which is a liquid rather than a vapor, is the only controlled variable for providing the correct amount of gasoline vapor. Therefore, the difference between the mass of injected liquid and the desired combustion vapor mass must be determined.
What are three types of fuel injection systems?
- Single-Point or Throttle-Body Injection.
- Port or Multipoint Fuel Injection.
- Sequential Fuel Injection.
- Direct Injection.
What is fuel injection system in diesel engine?
The fuel injection system lies at the very heart of the diesel engine. By pressurising and injecting the fuel, the system forces it into air that has been compressed to high pressure in the combustion chamber. The diesel fuel injection system consists of: injection nozzle – injects the fuel into the cylinder.
What are the different types of diesel fuel injection systems?
The main types of injection systems include pump-line-nozzle, unit injector, and common rail….Diesel combustion is highly influenced by:
- Injected fuel quantity,
- Start of injection,
- Exhaust gas recirculation (EGR) when applied,
- Charge air temperature and pressure.
What controls the operation of the injector?
The amount of fuel supplied to the engine is determined by the amount of time the fuel injector stays open. This is called the pulse width, and it is controlled by the ECU. The injectors are mounted in the intake manifold so that they spray fuel directly at the intake valves.
What is fuel injection quantity?
Injected fuel quantity is the amount of fuel delivered to an engine cylinder per power stroke. It is often expressed in mm3/stroke or mg/stroke. Injection duration is the period of time during which fuel enters the combustion chamber from the injector.
What is the type of injection system?
The main types of injection systems include pump-line-nozzle, unit injector, and common rail. Modern injection systems reach very high injection pressures, and utilize sophisticated electronic control methods.
How many types of fuel injection systems are there?
The three major types of fuel injection are known as throttle body injection, multiport injection, and direct injection.
What are the types of electronic fuel injection system?
Types of Fuel Injection Single-Point or Throttle Body Injection. Port or Multi-Point Fuel Injection. Sequential Fuel Injection. Direct Injection.