I give you some time ago to explain the post-turbo technology “to change the rear hold baggage put TA, this is exactly what God door operation”, many small partners is the first time I realized that the engine “building blocks. “turbocharger, it can also be placed away from the rear of the engine. So distant layout design, nature is both advantages and disadvantages. Lee, of course, after the compressed air through the cooling distance, work can be fed directly to the combustion chamber, without having to bypass the intercooler cooling. But the drawbacks of this technology is quite obvious that the intake pipe of a long path, let the power burst late, and more suitable for large displacement engine type basis.
In fact, in the field of art supercharger, the power delay the problem persists. Leaving aside the supercharger art directly from the engine belt drive, it began pressurized aside from the low engine speed range, turbo technology power delay already appeared. Pop’s past use of the large turbocharger, the power output of models with basic T in the “dual personality.” Low speed range of the engine itself displacement acting alone, feeling as if the naturally aspirated engine. When the lift speed, a sufficient amount of exhaust gas driven turbine blades in turn increases power. So engineers in turbo technology, come out of other assistive technology to help alleviate power delay.
is well known, a turbocharger on an engine after work the exhaust gas produced to promote the intake end of the turbine blade end of the same high-speed rotation of the turbine blade, and then the compressed air entering the engine is about to improve work efficiency to increase power. In the era of large turbine used in the past, due to the relatively large size of the turbine blades, and therefore need to have sufficient amount of exhaust gas engine drive its operation to establish a positive pressure in the high-speed range.
unexpected performance of the output, so that was the performance of the Dynamic performance quite a bit crazy. With the development of technology and market changes, players like sheep for such low rpm, high-rpm models like the wolf began some ideas, trying to get the turbine through a variety of methods to intervene as early as possible. Therefore manufacturers began engineering team is reduced to the diameter of the turbine, and the turbine blades made lighter, more rigid, and therefore such a turbocharged engine start displacement toward the development of small size. The benefits of small turbine blades is that the quality of light, the amount of exhaust gas at a low enough speed push, let the outbreak point in advance to the power output of the low-speed range. The resulting benefits is that the driver can get better fuel economy and dynamic response in the speed range in normal use.
As previously described, the advantage is that small turbine lightweight blades, the exhaust gas is easily blown pressure is then established. But things are going too far, turbine size can not be reduced indefinitely. Then how turbine size while maintaining the same, we continue to establish time pressure turbine advance?
The core structure of the turbocharger turbine is coaxial leaves, as long as speed up its rotation speed can be increased so that the intake pressure. But how can in the case of engine displacement is not strengthened, so that the turbine blades spin faster? Ever since, the engineers began in the turbine which had a “minor”, adding capable of swinging at an angle flap and motor, which is variable cross-sectional area of origin of the turbine.
by swinging the flap, thereby adjusting the exhaust gas through the turbine when the flow-through velocity, and then change the rotation of the turbine blades; and can be implemented in a low displacement, they still maintain the rotational speed of the turbine blades, so keep the turbine running to reduce turbo lag.
When mention electronic turbine, is not think of printing those modified up a big God external electric fan? Indeed, the electronic form of the turbine blade driven by the power really is an intake pressure. However, the difference is both “electronic turbo” folk god is to replace the traditional single turbocharger. You know high speed, high temperature and high pressure turbocharger work state, is not an ordinary product after private market can bear, so the auto parts supplier to launch a set of turbine systems, durability, stability and safety much better than the printing works.
For example, the introduction of electronic BorgWarner turbine system. At first glance that a separate electronic turbine blade, a fact which is incorporated in the original conventional exhaust gas turbine systems. Its working principle is that when the engine remains in the low speed, low boost value of the turbine, eBooster initially involved the turbine machinery and the sucked air is pressurized and then pushed to work after cooling intercooler. When power requests continue to increase, then the engine speed is increased to increase the amount of exhaust gas, large quantities of the turbine machinery and increase the intake air boost value, the electronic effect of the turbine and exits the pressurization began to wane.
In fact, Subaru’s racing department, a few years ago spread to maintain a speed of turbine technology, which belongs to the technical team, and therefore not well familiar in the year. With the exit of Subaru WRC, the original factory team of technicians and engineers began to develop other car races, and then put the ZeroLag of technology with them, began to be known.
The so-called ZeroLag name suggests is the turbine “0 Hysteresis” according to other methods mentioned above, you can only reduce but not completely eliminate turbo lag. ZeroLag appears indeed completely eliminates turbo lag, and the way to achieve is still driven by traditional waste gas. But the question is, the engine speed drops to reduce the amount of exhaust gas, boost the value of reducing it is well known fact that ZeroLag how to achieve when the engine speed drops turbine still keep running?
The answer is that the combustion. The core of this technology is to increase the combustion chamber in the engine, so that fuel and air in the combustion chamber to ignite the external and increase thrust to keep the exhaust gas turbine blades at high speed. When the engine speed increase, the turbocharger can still continue to provide pressurized air to the engine.
power and emissions, the engine seems to be in the moment most need to balance the two issues. On the one hand is the consumer desire for power to be higher than in the past consumers, on the other hand countries around the world are committed to reducing vehicle emissions; turbochargers seems to be able to achieve balance between the two techniques. Of course, the technology itself is a short board, and only through another new technology to its complement, in order to achieve the perfect state engineers envisioned.