Since the Audi SQ7 last year equipped with dual supercharging system, an increase of electronic turbocharger, led to a treasure on the so-called electronic turbocharger thousand yuan or even hundred yuan fire, a variety of evaluation have been launched. , This low-cost electronic turbocharger instead of causing the engine at high speed air intake problems. The genuine electronic turbocharger should be like it? Turbocharged referred to as TURBO, which is a special compressor The gas is compressed before entering the cylinder to increase the density of the gas entering the cylinder and reduce the volume of the gas. In this way, the mass of the gas is greatly increased in unit volume, and the amount of gas intake can meet the combustion needs of the fuel so as to achieve Increase the engine power and torque purposes.In general, the turbocharger after the installation of the engine power and torque to increase 20% to 30% on the other hand turbocharged can improve the car's fuel economy.
Due to the inherent turbo lag effect of electric turbocharger, the turbine can not start working until the engine reaches a certain speed (about 2000rpm) .Electronic turbocharger makes the control of the engine more freedom. Audi SQ7 is the world's first In addition to the two conventional turbines, there is an electric turbine, which is called an electrical lypowered compressor (EPC). When the engine turbine is relatively empty, the electric turbine starts to work and the engine is hit. The electric turbo is driven by a small electric motor that Audi has also developed for its use in the development of a 48-volt automotive power supply. The small motor can turn within 250 milliseconds, and if it is hard to say that SQ7 has turbo lag, then this time It's 250 milliseconds, which is when you blink once, and then you can speed up all the way to 70,000 rpm, providing boosts for 4 cars.
Behind the electronic turbocharger is the 48V upgrade of the European system manufacturers
The electronic turbocharged motor is powered by 48V instead of our regular 12V. Why is this "48V" important? Because it stands behind the fundamental new European energy strategy.
In 2011, the 48V voltage specifications were released jointly by the five major brands Audi, BMW, Daimler, Porsche and Volkswagen to start the development of the electrification of vehicles with an on-board voltage up to 48 V. Subsequently, many European car companies have successively developed new standards.
Why should the vehicle voltage increased to 48V? European manufacturers are given the reasons for energy saving, and safety considerations, but in the public view, behind this more important reason is to contend for Japanese hybrid technology.
48V voltage is the safe voltage ceiling, 48V power supply costs also rise than Japanese hybrid technology is much lower, European manufacturers hope to use these advantages 48V, combined with its own technical reserves in the traditional internal combustion engine, In order to achieve the dual promotion of power and energy saving, and Japan's hybrid technology to contend and eventually achieve the pure electric transition.
In fact, after five European manufacturers put forward 48V voltage standard, the international spare parts suppliers including Valeo, Bosch, Delphi and China started the development of the related accessory in a big way, one of which was electronic turbocharger Keep up with the electronic air conditioning - do not start the engine can turn on the air conditioning, electric drive VVT - do not rely on the camshaft to promote the intake and exhaust valve variable and a series of electrification of new technologies.
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The trend of the future development of the automobile is four: intelligent, electrification, lightweight and automation.Electronic turbocharged, is a kind of electrification of the development of the car.European manufacturers move actually worthwhile Chinese car prices think: the future of our new energy strategy How can we choose the path before the arrival of electrification, if the traditional internal combustion engine can not meet the fuel consumption and emission requirements, what kind of transition technology we use? With the European countdown to the development of fuel vehicles, the Chinese government is also considering the end of pure fuel vehicles.
