“Paradigm has changed. The smaller the engine capacity, “said Fred Becker, Director of Sales Engineering Concepts NREC, a company turbocharger producers from the United States, at SAE World Congress in Detroit last week.
However, the performance is not sacrificed. “In fact, the more intense, more efficient, and exhaust gas emissions are also so low. The car was driven by steady on a variety of conditions, “he added.
Actually, the trend has been underway since last few years. For example Volkswagen, which developed TSI engine. Although the 1.4-liter engine capacity, ability to match the 2.0-liter engine. VW engines have been used on products sold in Indonesia, the Touran MPV.
Gasoline engine-now-especially great because the more applications are combined with direct injection technology petrol or gasoline direct injection (GDI or DI) and the turbocharger. Especially for the turbo, this system does not only work on medium and high speed, but starting from the start. Turbochargers also no longer owned a large capacity machine, but also a small engine, below 1.5 liters.
Noise
In addition to boosting performance machines that are more efficient, development by turbocharger manufacturers is to reduce the noise caused by this device. For that, the engineer who specializes in automotive turbochargers special-application re-analyzing and designing turbo subcomponents, such as shape, angle, and the size of the fan leaf (blade-blade). Result, the ability of the turbocharger is now more intense.
In addition, because many companies are interested in automotive component suppliers producing turbochargers, new ideas emerged. For example, designing a turbocharger with a miniature model of water cleanup pumps in nuclear reactors.
There also are making impellers (blade-blade) as a hydroelectric turbine (power plant) is safe through the fish. Some are made to replace the axial fan tail rotor helicopter model. In fact, the NREC has managed to create a highly efficient turbocharger, capable of reducing NOx, and worked in the radial.
Recovering energy
“No less attractive because of design and engineering knowledge continue to grow. Turbochargers are designed specifically for current generation gasoline and diesel engines, “said Becker. Therefore, the upcoming turbocharger designed for smaller engine capacity and number of cylinders a little, for example, four, three, or even two cylinders. “In fact, had anyone have an idea to unite the turbo unit with EGR (exhaust gas recirculation),” Becker beber.
During this time, the development of automotive turbochargers on slow assessed. The reason is, the added value obtained from the turbocharger a bit.
“In order to obtain greater value added, research is now focused on the turbo impeller aerodynamics,” he said. He added, later not only to boost turbocharger (boost) power of the engine, but also to restore or recover energy.
