What is a diesel pre chamber?

What is a diesel pre chamber?

: an auxiliary space in which combustible gases are ignited and combustion started ahead of the main combustion chamber of a jet or gas engine The glow plug is an electrically operated device that protrudes into the precombustion chamber.

How does a prechamber work?

The prechamber concept helps with those first two by fostering much faster combustion. The faster the mixture burns, the less need to fire the spark plug early (while the piston is still on its way up) to get the entire mixture to burn. Firing the spark later while still burning all the fuel lowers the temperature.

What is prechamber combustion?

Every last ounce of power needs to be extracted, and prechamber combustion is the way to do it. It means the fuel is injected into a chamber above the main combustion chamber, where the spark plug also sits.

Is port injection better than direct injection?

Port injection provides a better, more stable air/fuel mixture at lower engine speeds, which results in smoother operation upon startup. At higher rpm, direct injection provides a greater cooling effect, allowing for more power and less chance of knock.

What is the purpose of pre combustion chamber in the diesel engine?

The purpose of the divided combustion chamber is to speed the combustion process, and to increase power output by increasing engine speed. The addition of a prechamber increases heat loss to the cooling system and thereby lowers engine efficiency. The engine requires glow plugs for starting.

What is Prechamber spark plug?

This spark plug is called prechamber spark plug. Inside the prechamber spark plug, the air-fuel mixture is ignitable by the ignition spark. Flame jets occurring due to the small holes in the prechamber then ignite the air-fuel mixture in the main combustion chamber, that would not catch fire using a regular spark plug.

What is the advantage of indirect fuel injection?

The advantages of the indirect injection (IDI) engine are its quieter combustion and a combustion system that is more amenable to high speed operation. The disadvantage of the IDI engine, is that the direct injection (DI) engine has a 10–15% lower fuel consumption.

What is combustion chamber in diesel engine?

A Combustion Chamber is the area within the Cylinder where the fuel/air mix is ignited. As the Piston compresses the fuel/air mix and makes contact with the Spark Plug, the mixture is combusted and pushed out of the Combustion Chamber in the form of energy.

Which is better GDI or MPFI?

A GDI system also has more flexibility regarding when in the combustion cycle the fuel is added. MPFI systems can only add fuel during the intake stroke of the piston, when the intake valve is open. GDI can add fuel whenever it needs to.

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