What is Turbo What are the benefits and disadvantages of turbocharging

There are two main types of current supercharging technologies: mechanical supercharging and turbocharging. But the principle is different.

The full name of turbocharging is exhaust gas turbocharging, which is generally represented by "T". Turbocharging is a device that increases the pressure of the air flow in the intake pipe by pushing the rotor to rotate by the high-velocity gas coming out of the exhaust pipe. Increase the pressure of the airflow to allow more air, i.e. more oxygen, to enter the cylinder, so that the combustion will be more adequate and the power will be greater.

At both ends of the supercharger is a turbine on one side and a compressor on the other, and the waste device drives the blades to rotate and drive the compressor machine to work, so that it can deliver more air to the intake pipe faster and in larger quantities. The turbocharger relies on the function of high-speed exhaust gases, which are wasted in a normal engine. Thanks to its speed, the turbo press rotor can achieve very high speeds, even up to around 150,000 rpm.

But turbocharging has one of the biggest disadvantages, that is, there is turbo hysteresis: that is, at lower speeds, when the accelerator pedal is pressed, the engine will not have a large power increase, and it will not start to work until the speed rises to a certain extent (generally at 2500-3000 rpm), and the turbocharger will feel a sudden increase in power at this time, but this often affects the ride comfort of the car! Mechanical pressurization, on the other hand, is different:

Its rotor is not driven by the exhaust gases of the engine, but directly by a belt connected to the crankshaft of the engine, which is driven by the crankshaft of the engine. The crankshaft is the power take-off shaft of the engine, so that the supercharger not only increases the pressure, but also consumes part of the power, so the supercharging efficiency of the general supercharger is not high. However, the biggest advantage of supercharging is that there is no turbo hysteresis of turbocharging, so the supercharging effect of supercharging is more obvious at low speed, but the efficiency gradually decreases with the increase of speed.

This is the opposite of turbocharging!

The world's first exhaust-gas-driven supercharger was introduced in 1912, and the large-scale production of turbochargers appeared during World War II, when it was first used in military aircraft by the United States. The first car manufacturer to incorporate turbochargers into automotive products was Sweden's SAAB Saab. Turbocharging is a technology that increases the intake capacity of an engine, which uses a special compressor to pre-compress the gas before feeding it into the cylinder, so that the mass of the gas will be greatly increased.

When a turbocharger is attached to an engine, the maximum power can be increased by about 40 percent. At the same time, the supercharging technology improves fuel economy and reduces tailpipe emissions. However, when a normal turbocharger accelerates sharply, the power delivery will be significantly sluggish, and the power torque graph shows that its torque curve shows a hard angle change, which is caused by the sluggish response of the turbo start and accelerator pedal.

The Trionic management system developed by SAAB effectively solves this problem, and the entire torque curve presents a smooth "arch", which makes the torque change process smoother during engine operation, resulting in a smoother and more enjoyable driving process.

The biggest benefit of turbocharging is that it can significantly increase engine power without increasing engine displacement. Non-turbocharged engines draw air directly from the atmosphere through the movement of the crankshaft, while turbocharged engines are supplied with compressed air by a turbocharger.

As more air enters the cylinder, more fuel is allowed to be injected to allow the engine to generate more power and have a higher combustion efficiency. This means that an engine of the same size and weight can produce more power when supercharged, or a smaller displacement engine can produce the same power as a larger engine when supercharged.

The turbocharger allows the non-supercharged engine to be compensated for oxygen when working at altitudes, and the engine works with the turbocharger to keep the intake pipe pressure at sea level atmospheric pressure. But the power of the naturally aspirated engine decreases with altitude.

A turbocharger is an air compressor that is powered by exhaust gases generated by the operation of an internal combustion engine. Similar to superchargers, both increase the flow of air into an internal combustion engine or boiler, thereby increasing machine efficiency. Commonly used in automobile engines, turbochargers can increase the horsepower output of internal combustion engines by harnessing the heat and flow of exhaust gases.

In general, the weight of the internal combustion engine of the vehicle will increase after the supercharger is installed, and the energy used to overcome the inertia will increase.

The main function of turbocharging is to increase the air intake of the engine, thereby increasing the power and torque of the engine and making the car more powerful. When an engine is equipped with a turbocharger, its maximum power can be increased by 40% or more compared to without a turbocharger. This means that the same engine can produce more power after being pressurized.

Take our most common turbocharged engine, for example, after supercharging, the power can reach the level of the engine, but the fuel consumption is not much higher than the engine, on another level is to improve fuel economy and reduce exhaust emissions.

Turbocharging has the following advantages: 1. Pure power performance is generally higher than self-judgment and inhalation. Especially in terms of maximum torque intervention, the turbo positive pressure can exert the maximum torque of the engine earlier; 2. Perform the engine power earlier.

However, in terms of maintenance costs, turbocharging is higher than that of naturally aspirated Digger engines. Especially in terms of oil cost and labor cost; 3. Fuel consumption is basically not much different, and turbocharging may have a slight advantage. If you consider it from the family car, the displacement is enough to be satisfied.