This article will explain in detail what a supercharger is. Purpose of charging, effect of charging, type of charging. Do refer to Mechathon, to know more about automobiles.
Supercharging- What is it?
The power output of a car engine depends on its fuel consumption, and it has been observe that fuel consumption can only be increase by adding air to the engine cylinders. This means that engine air consumption is directly related to engine performance. The air supplied to the engine depends on the displacement of the engine. So to get more power you have to pump more air into the cylinder.
The process of forcing more charge air into the cylinder than the natural piston motion can draw is called supercharging. Engine performance degrades with altitude due to reduced air density. At an altitude of 18,000 feet, the engine requires about half as much charge per cycle as it does at sea level, but after that the engine produces less than half the power. By supercharging the engine at high altitude, the force can be kept constant, just like at sea level.
Key Objective of Supercharging.
The purpose of the fee is to:
1. Reducing the weight per horsepower of the engine.
2. To minimize the footprint of the engine.
3. Maintains engine performance even at high altitudes.
4. Improve the performance of racing cars.
5.Improves combustion efficiency by creating a uniform air-fuel mixture. impact of charging.
The following effects are observe in supercharge engines:
1. Compressor mixes the air and fuel mixture better. Turbulence contributes to further mixing of fuel and air particles.
2. As the cargo is compressed in the compressor, the temperature of the cargo increases. This is advantageous with respect to fuel evaporation. However, as the temperature increases, the charge density tends to decrease. In addition, the probability of explosion is greatly increase. In diesel engines, knocking is suppresse by increasing the temperature of the supply air (air).
3. Electricity is require to drive the compressor. This power is usually supplie by an engine. So part of the power obtaine from charging is use by the supercharger.
What is Centrifugal Type Supercharger?
A mixture of fuel and air enters the impeller, which rotates parallel to the shaft. The mixture exits the impeller and into the diffuser without issue. Mechathon says, Passing through the diffuser slows the mixture down and increases the pressure. At this stage, the charge density increases. After passing through the diffuser, the mixture reaches the volute.
The volute (outer casing) directs the air-fuel mixture through the intake manifold to the engine cylinders. Centrifugal compressors are cheap and easy. Good efficiency is demonstrate in the pressure ratio range of 1.5 to 3.0. The pressure ratio changes as the square of the velocity. The pressure ratio stays constant while the volume flow varies during high-efficiency operation. Because vehicle engines are variable speed engines, this makes the centrifugal supercharger unappealing for use in them.
Conclusion
The surge, which occurs when there is a propertechzone significant pulse in the supply pressure, lowers the centrifugal supercharger’s performance and is a drawback of the device. The surge, which occurs when there is a significant pulse in the supply pressure, lowers the centrifugal supercharger’s performance and is a drawback of the device.