An article lets you understand turbocharged engines
As environmental protection becomes more and more stringent, there are fewer and fewer large-displacement self-priming vehicles, and the installed capacity of small-displacement turbocharged engines is increasing. The engine is the source of vehicle power. There are two major types of contemporary mainstream engines, one is naturally aspirated and the other is turbocharged. Next, I will use an article to understand turbocharged engines.
The air intake volume of a conventional engine is determined by the amount of air sucked into the cylinder by the piston, but the cylinder volume is fixed, so the maximum power of the engine is also fixed. The air is sucked into the cylinder during the movement of the piston. This process belongs to the natural inhalation of air, and there is no external force to push it. Therefore, this form of engine is a naturally aspirated engine.
The air intake of a naturally aspirated engine is limited, and the displacement largely determines the power level. In order to obtain more power without changing the engine structure, a device similar to a blower is used to use the exhaust gas emitted by the engine to drive the turbine to rotate, and the turbine drives the coaxial compressor to rotate together. , thus solving the problem of air intake. After the intake air volume of the engine is increased, it outputs more power. Such an engine is a turbocharged engine.
A turbocharger consists of a turbine and a compressor, which are coaxially connected. Exhaust gases from the combustion of the engine pass through the exhaust duct into the inlet of the turbine. Because the exhaust gas is pushed out by the piston, there is a certain pressure, which drives the turbine to rotate together. The turbine and compressor are on the same axis, so the compressor will also rotate with it. When the compressor rotates, the air will flow to the impeller of the compressor through the inlet port, and under the action of centrifugal force, it will be pressurized through the diffuser tube to form a high-pressure airflow. The faster the compressor spins, the faster the air moves and the greater the pressure. So the air in the intake port seems to be squeezed in, and finally pushed into the engine combustion chamber.
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