Why air injection system is used?

05/17/2020 Off By admin

Why air injection system is used?

An air injection system forces fresh air into the exhaust ports of the engine to reduce HC and CO emissions. The exhaust gases leaving an engine can contain unburned and partially burned fuel. Oxygen from the air injection system causes this fuel to continue to burn.

What is the difference between air injection and solid injection?

Air Injection System In this Injection system, the fuel will be injected into the cylinder by means of compressed air. So it needs an additional compression system for the Injection System. High viscosity fuel can be used which are comparatively less expensive than the fuel used by the Solid Injection System.

What is meant by air injection in diesel engine?

Air Injection System: In this system, fuel is forced into the cylinder by means of compressed air. This system is little used nowadays, because it requires a bulky multi-stage air compressor. This causes an increase in engine weight and reduces the brake power output further.

What is the use of air supply system in an IC engine?

An air supply system for a reciprocating internal combustion engine includes an air inlet and a mixing volute for receiving charge air from the air inlet. The mixing volute is configured to impart swirl in a first direction to charge air passing from the air inlet and into the volute.

How does air injection work?

Secondary air injection systems pump outside air into the exhaust stream so unburned fuel can be burned. Newer aspirated systems use the vacuum created by an exhaust pulse to pull air into the pipe. The latest systems use an electric motor to pump air. These systems are critical for the life of the catalytic converter.

What happens when air injected into veins?

When an air bubble enters a vein, it’s called a venous air embolism. When an air bubble enters an artery, it’s called an arterial air embolism. These air bubbles can travel to your brain, heart, or lungs and cause a heart attack, stroke, or respiratory failure. Air embolisms are rather rare.

Why don’t we use carburetors?

Most car manufacturers stopped using carburetors in the late 1980’s because newer technology was coming out, such as the fuel injector, that proved to be more efficient. There were only a few cars that continued to have carburetors, such as the Subaru Justy, until about the early 1990’s.

What are the three types of fuel injection systems?

What Are The Different Types of Fuel Injection?

  • Single-point or throttle body injection.
  • Port or multipoint fuel injection.
  • Sequential fuel injection.
  • Direct injection.

What is the function of injection pump?

An Injection Pump is the device that pumps fuel into the cylinders of a diesel engine. Traditionally, the injection pump was driven indirectly from the crankshaft by gears, chains or a toothed belt (often the timing belt) that also drives the camshaft.

What are the common types of air cleaner used in IC engine?

There are many types of air cleaners but the types commonly used in tractors are: (i) Oil wetted mesh type, (ii) Dry air type and (iii) Wet type or oil bath air cleaners. It consists of a copper mesh or nylon wire wetted with oil to catch the dust particles from the air which are made to pass through it.

Why is IC engine cooling system necessary?

The cooling system serves three important functions. First, it removes excess heat from the engine; second, it maintains the engine operating temperature where it works most efficiently; and finally, it brings the engine up to the right operating temperature as quickly as possible.