What is fuel injection system in diesel engine?
Abstract: The purpose of the fuel injection system is to deliver fuel into the engine cylinders, while precisely controlling the injection timing, fuel atomization, and other parameters. The main types of injection systems include pump-line-nozzle, unit injector, and common rail.
How does fuel injection system work?
A modern fuel injection system works by atomising the fuel at high pressure, mixing it with clean air as it passes the inlet manifold, before entering the combustion chamber of each cylinder. This often led to high emissions, poor fuel economy, misfiring engines, burnt valves and shorter engine life.
What are the basic requirements of a fuel injection system of a diesel engine?
iv) Proper atomization of fuel into very fine droplets. v) Proper spray pattern to ensure rapid mixing of fuel and air. vi) Uniform distribution of fuel droplets throughout the combustion chamber. viii) No lag during beginning and end of injection i.e., to eliminate dribbling of fuel droplets into the cylinder.
How does fuel injection work in a diesel engine?
Diesel fuel injection. The fuel injection system in petrolengined cars is always indirect, petrol being injected into the inlet manifold or inlet port rather than directly into the combustion chambers. This ensures that the fuel is well mixed with the air before it enters the chamber. Many diesel engines, however,…
When did they start using fuel injection in cars?
Mechanical fuel injection was used in the 1960s and 1970s by many manufacturers on their higher-performance sports cars and sports saloons. One type fitted to many British cars, including the Triumph TR6 PI and 2500 PI, was the Lucas PI system, which is a timed system.
What are the drawbacks of mechanical fuel injection?
These systems suffer from the drawbacks of being mechanically complex and having poor response to backing off the throttle. Mechanical systems have now been largely superseded by electronic fuel injection (known as EFi for short). This is thanks to the increasing reliability and decreasing costs of electronic control systems.
What kind of fuel pump does a Chevy diesel engine use?
Fuel pumps or fuel lift pumps draw fuel from the fuel tank and pump it into the fuel injection system. Fuel pumps must keep fuel flow constant when the engine is running. Chevrolet uses two types of pumps; a conventional mechani- cal/diaphram type and an electric type. The mechanical/diaphram type is found on the 6.2 and 5.7 liter diesel engines.
How does fuel injection work on a GMC diesel?
Fuel is drawn through the diesel fuel conditioning module (8), which combines a water separator, hand operated fuel prime pump, filter element and then through a fuel filter vacuum switch (9) to the fuel injection pump.
What is the GM diesel truck fuel pump defect?
Consumers who own vehicles installed with a Bosch CP4 fuel injection pump may be affected by a GM diesel truck fuel pump defect. What is the GM Diesel Truck Fuel Pump Defect?
Fuel pumps or fuel lift pumps draw fuel from the fuel tank and pump it into the fuel injection system. Fuel pumps must keep fuel flow constant when the engine is running. Chevrolet uses two types of pumps; a conventional mechani- cal/diaphram type and an electric type. The mechanical/diaphram type is found on the 6.2 and 5.7 liter diesel engines.
What is the code for a fuel injector failure?
If you are using a generic (not vehicle manufacturer specific) code reader; then you can expect to see codes beginning with P02. For example, a fault with an injector in cylinder one would give a code of P0201.