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one pair of supercharged
double boost – supercharged engine technology
supercharged engine is very traditional measures to enhance the power and fuel economy, At the same time it also reduces harmful exhaust emissions of the engine, turbocharger technology with the continuous development of new technology has been steadily progressing. A conventional turbocharger and supercharger where there are unsatisfactory, the two technologies together regarded as a solution.
bis supercharging – Category
Today, in the automotive engine with a supercharger and a turbo supercharger categories depending mainly divided structure. Early turbocharger belong supercharger, referred ldquo; supercharger rdquo; (Supercharger), then the turbocharger to the invention, is called a Turbocharger.
supercharger
Like engine accessories as the power steering pump installed on the engine, driven by an engine belt, the delivery of compressed air to the intake manifold. Supercharger simple structure, operating temperature range of 70 degrees to 100 degrees, no special cooling system, a simple mechanical maintenance. However, with increasing the boost value of the engine rotational speed is reduced, when it reaches a certain limit, due to the resistance of the turbocharger itself, but will become a burden to the engine, a serious impact on the increased engine speed. Therefore, the current European production of supercharger systems mostly take low boost. Its advantage is the speed and the engine speed corresponding to the rotor is, no lag, smooth power output, and low cost. A disadvantage is that the power consumption of the engine, the supercharger prone to noise.
turbocharger
is the use of engine-out exhaust gas driven supercharger, since the exhaust gases have thousands of degrees, the need for additional air intercooler to cool the compressed air to a high temperature. The advantage is more efficient than a supercharger supercharging, the disadvantage is the influence by the engine rotational speed, little effect at low speed, to beEngine upgrade to the excellent performance when there will be speed. Turbo lag is the turbo engine the biggest problem facing. At low speed, without the intervention of the turbocharger, while the exhaust gas turbine to be driven still rotating, naturally aspirated engine exhaust is not smooth, the current engine torque output than the same displacement naturally aspirated engine even weaker. As the engine speed increases, for example after the break 3000 rpm, the turbocharger sudden intervention, the power generated at this time will be increased sharply. This sudden increase in power affect the smoothness of power output. Although the turbocharged engine to bring to give more power output, but as a civilian car, smooth power output is very important, and driving comfort turbo lag will bring some impact.
supercharger contribute torque output at low speed, but power output is limited at high speed; and the exhaust gas turbocharger has a strong power output at high speed, low speed but is powerless. Engine designers conceived so they combine with a supercharger and a turbocharger, two technologies to address their shortcomings, while addressing the low torque and high power output.