Turbocharger and supercharger

Oleh Mbah Med

Sabtu, 22 Oktober 2011

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Turbocharger and supercharger is a device that forces air into the cylinder and creates a greater pressure than atmospheric pressure to increase engine output. Generally, the engine output is determined by the number of air-fuel mixture, burned during a certain time, and increases with increasing number of air-fuel mixture.

This means, to increase engine output, the volume of a step machine or engine speed should be increased. The problem, by increasing the volume of step machines, weight also increased, whereas factors such as loss of friction, vibration and noise of the switching engine speed limit increase.
Compliant supercharger which is the inverse of the output of the engine, while keeping its shape is simple and lightweight, with a supply of air and more fuel without changing the size of the machine.

Controlled exhaust gas turbocharger and supercharger controlled machines. Toyota began using turbochargers in 1980, and the supercharger in 1985 in Japan. Today, in 2002, only turbochargers are used to model abroad.

 

Features Turbocharger and Supercharger

Both are a type of air pump, which forces air into the cylinders to increase the mass of intake air. Conventional machines draw air in, use a vacuum that arises when the piston down.

Pressure in the intake manifold to be higher due to the turbocharger or supercharger forcing air into the cylinder on the intake pressure (boost pressure) greater than atmospheric pressure. Thus, the mass of intake air into the cylinder increases.

REFERENCES
Charging efficiency
1. charging efficiency
Machine's ability to attract so-called air charging efficiency. Charging efficiency of conventional engines is about 65-85% due to the resistance of the suction and exhaust system is left in the exhaust system. However, the charging efficiency of a machine equipped with a turbocharger or supercharger can be more than 100%.

2. ratio kompresio
Gasoline engines have a greater tendency to knocking because the compression pressure increased. Because the compressed air to pressure greater than atmospheric pressure and supplied to the engine cylinder with a turbocharger or supercharger, compression pressure becomes greater than that on conventional machines and knocking up easily. Therefore, the compression ratio engine with a turbocharger or supercharger is set lower than on conventional tmesin to prevent knocking.

Tag : knowledge