Turbocharger

In the turbocharger, two wheels, turbine and compressor, are installed on one shaft, which are located in housings separated from each other.

The exhaust gases are used to drive the turbine wheel. They accelerate the supercharger shaft to a speed of 120,000 1/min. Since the wheels have a common rotor, the compressor wheel rotates at the same speed and pumps fresh air into the engine cylinders.

In addition to engine power, when using a turbocharger, torque also increases. The prerequisite for this is that the blower shaft rotates at a sufficient speed and thus a decent filling factor is guaranteed. As a rule, a noticeable boost pressure is already reached at an engine speed of about 2500 rpm.

To further improve cylinder filling, a charge air cooler is located between the turbocharger and the engine intake duct, which cools the pre-compressed air. As a result, the power output is increased, since cold air contains more oxygen due to its higher density.

In a gas turbine supercharged engine with a power of 81 kW / 110 hp. variable turbocharger provides extra power. For this, the turbine is equipped with adjustable guide vanes, which are infinitely controlled by the engine control unit using a solenoid valve and a vacuum diaphragm mechanism. As a result, optimum boost pressure is generated at all times, resulting in higher torque and correspondingly more power, especially at low engine speeds.

The turbocharger is an extremely precisely manufactured unit. Therefore, in case of repair, it is recommended to contact a specialist. As a rule, if a defect occurs, the turbocharger is replaced as an assembly.