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Let’s Get to Know The Turbo Well

2020-11-12 17:04:02

Sports cars participating in the competition are generally equipped with turbochargers on their engines to make the cars burst out with more power. The engine generates power by burning fuel in the cylinder. The amount of fuel input is limited by the amount of air sucked into the cylinder, and the generated power is also limited. If the engine's operating performance is at its best,  the output power should be increased. Only by compressing more air into the cylinder to increase the amount of fuel and improve combustion performance. The turbocharger is the only mechanical device that can increase the output power of the engine without changing its working efficiency.


The main composition of the turbocharger:


  • The exhaust gas turbocharger is mainly composed of a pump wheel and a turbine. The pump wheel and the turbine are connected by a shaft, which is the rotor. 

  • The exhaust gas discharged from the engine drives the pump wheel. The pump wheel drives the turbine to rotate. The turbine rotates and then supercharges the intake system. The supercharger is installed on the exhaust side of the engine. The turbocharger generally uses a full-floating bearing, which is lubricated by the engine oil, and coolant is used to cool the supercharger.


  • The inter-cooler is installed between the turbocharger outlet and the intake pipe to cool the air entering the cylinder. The inter-cooler is like a radiator. It is cooled by wind or water, and the heat of the air will release into the atmosphere through cooling.


  • For the gasoline engine has a wide range of speed and large changes in airflow, the shape of the turbocharger's compression impeller is a complex ternary curved ultra-thin wall impeller, which is made of aluminum with a special casting method. The more reasonable the impeller shape and angle, the better the quality.


  • The function of the deflation sensor is that when deflation occurs, the sensor could feel the abnormal vibration and will immediately feedback the information to the engine ECU (Electronic Control Unit) control system, delay the ignition timing a bit, and restore the normal ignition timing when no deflation occurs.



Four main advantages:


1. Improve engine power per liter. When the engine displacement remains unchanged, the intake density can be increased to allow the engine to inject more fuel, thereby increasing the power of the engine. The power and torque of the engine with a supercharger should be increased by 20% to 30%. On the contrary, under the same power output requirements, the cylinder diameter of the engine can be reduced, and the volume and weight of the engine can be reduced.


2. Improve engine emissions. Turbocharger engines reduce the emissions of harmful components such as particulate matter and nitrogen oxides in the engine exhaust by improving the combustion efficiency of the engine. It is an indispensable configuration for diesel engines to meet Euro II emission standards.


3. Provide the function of plateau compensation. In some high-altitude areas, the higher the altitude, the thinner the air, and the engine with a turbocharger can overcome the power drop caused by the thin air at the plateau.


4. Improve fuel economy and reduce fuel consumption. Because the engine with a turbocharger has better combustion performance, it can save fuel by 3%-5%.