Advantages and disadvantages of turbocharging

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Advantages and disadvantages of turbocharging

turbocharging is abbreviated as turbo. If you see turbo or T at the rear of a car, it indicates that the engine used by the car is a turbocharged engine

turbocharger is actually an air compressor, which increases the intake by compressing air. It uses the inertial impulse of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber. The turbine drives the coaxial impeller, which presses the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed increases synchronously with the wheel speed, and the impeller compresses more air into the cylinder. The increase of air pressure and density can burn more fuel, and the corresponding increase of fuel can increase the output power of the engine

the biggest advantage of turbocharger is that it can greatly improve the power and torque of the engine without increasing the engine displacement. Generally speaking, the power and torque of the engine with turbocharger should be increased by 20% - 30%. The disadvantage of the turbocharger is lag, that is, due to the inertia of the impeller, the response to the sudden change of the throttle is slow, so that the engine delays increasing or reducing the output power, which will feel a little powerless for the car to accelerate or overtake suddenly

don't be too crazy about turbocharged cars

turbochargers are very important. They can greatly improve the power of the engine and are considered to be the Savior of the engine. Unfortunately, due to the lag of the turbocharger, the driving feeling of the turbocharged car is very poor

recently, through various improvements by various manufacturers, the performance of turbocharged engine has been greatly improved, but the results are still not ideal. Especially when the turbocharger works, the driving feeling is too different, and the transition between the two is not smooth, which is far from the natural intake engine

when preparing to buy a turbocharged car, every buyer must pay attention to this problem. If you want to avoid the virus from destroying the system files and pursue high power or high torque, you will regret it after buying the car. In the past, turbocharged vehicles were once popular, and many enthusiasts even thought that it was impossible without turbochargers, but this would greatly reduce the high cost performance of this kind of film, which can not be regarded as a car. Now, only a few special cars are still equipped with turbochargers. Due to the long lag of turbocharger, the wide application of the device is limited

of course, if you don't pursue the feeling of driving and just want to have strong power or torque, such people had better buy turbocharged cars. On the contrary, if you want to feel comfortable and have fun when driving everyday, you'd better buy a non supercharged car

advantages and disadvantages of turbocharging and supercharging

the two supercharging methods have their own advantages and disadvantages. In terms of turbocharging, in theory, the cylinder wall should be thick enough to withstand pressure when the cylinder body was originally designed. As long as the size and quantity of the turbocharger body are increased, the supercharging force can be increased almost unlimited. The most famous example is the turbocharged engine provided by Honda car factory to McLaren formula one team in that year. The exhaust volume is only 1500cc, but Mali can output up to 1500 frightening horses

the famous bugattie B110 supercar owned by Schumacher of Ferrari team has an exhaust capacity of 3.5 liters, but this V12 heart is connected in series by four turbine rotors. Mali can also export up to 560 horses

however, everything has its advantages and disadvantages. Although it is easy to increase power output by turbocharging, the high heat generated by turbocharging must be handled properly. The high heat will affect two parts. One is the oil responsible for direct cooling and lubrication, which will oxidize rapidly due to high heat. Therefore, the turbocharged engine must choose high-quality engine oil with high temperature resistance and good oxidation resistance, and the engine oil change cycle will be shortened accordingly, so it is not easy to produce oxides. Usually, the corresponding way of the car factory is to install an oil cooler to avoid excessive oil temperature and end the service life of the oil early. This is why the precision turbocharged car designed has an oil temperature gauge in addition to the oil pressure gauge. So that the owner can pay attention to the oil at any time

another problem affected by high temperature is the cooling system, which is in the air inlet part. In order to increase the oxygen content of intake air, most turbocharged vehicles will increase the way of intercooler to reduce the temperature of compressed air, and the cooling water tank and thermostat will be appropriately increased to improve the heat dissipation efficiency. Therefore, in recent years, it has been rarely heard that the heat dissipation of turbocharged engine is poor

however, there are some tricks in using and maintaining the turbocharged engine. For example, try not to pull up the speed to make the turbine work when approaching the destination. Let the engine idle for at least one minute before stopping, and don't let the turbine rotor run too long under some inorganic conditions. These are very helpful to maintain good vehicle conditions

compared with turbocharged vehicles, supercharged vehicles are much simpler. In principle, as long as the engine is running, supercharging will naturally occur. The higher the engine speed, the greater the pressure. The advantage is that there is no hysteresis phenomenon caused by turbocharging. The acceleration feeling is equivalent to linearization, which is not different from naturally aspirated engines, but the disadvantage is that the supercharged steam is driven by belt, and the driving force is still the engine, Therefore, it is not conducive to the performance of fuel consumption. In order to improve this phenomenon and make the supercharging force play a role when it is most needed, the car factory installed solenoid valves and clutches, and also made the clutch start to engage and drag the supercharger when the supercharger is above a specific speed, but it will be more or less like the hysteresis of the turbocharger. All these things need years of accumulation to find out where the doorway and details are controlled. Therefore, the more uncertain the project is, the more the car factory doesn't like to touch it. In order to avoid that Professor HOTA gangarao and doctoral student Praveen majjigapu of the Department of civil engineering of the University of West Virginia developed a composite reinforcement system and smashed the signboard. Over time, the genre of turbocharging versus supercharging naturally emerged. (end)


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