The exhaust gas turbocharger is driven by exhaust gases. Just like a compressor, the turbocharger provides supercharging in the cylinders. This allows the engine to achieve a higher torque and power than engines without a turbocharger, as the air is 'squeezed' into the engine. The efficiency of a turbocharger is very high as it does not need a mechanical drive, in contrast to a compressor which is mechanically driven. The disadvantage of the turbocharger compared to a compressor is the so-called turbo lag, because it takes a fraction of a second before the turbo is flushed by the exhaust gases.
When replacing the turbocharger, it is recommended to also replace fasteners and gaskets to prevent leakage. You can also find these accessories in our product range. If you have any questions or would like advice, please contact our product specialists. They will be happy to assist you.
The supercharger, also called a compressor, provides extra air supply to the engine. This allows the engine to achieve a higher torque and power than without a compressor, as the air is ‘squeezed' into the engine. The supercharger is mounted to the crankshaft by means of a belt connection, which drives the compressor. There are various types of compressors available, each with their own construction, and each with their advantages and disadvantages. In contrast to a turbocharger, the compressor already has pressure build-up at low speeds. The drawback is the mechanical connection which makes the efficiency of a compressor somewhat lower than that of a turbocharger. A turbocharger is driven by exhaust gases and has no mechanical drive.
The boost pressure control valve, also called dump valve or blow-off valve, ensures the release of turbocharging boost pressure when the throttle is released. This prevents overpressure/counter-pressure in the system because the turbocharger continues to supply new air while this is no longer required when the accelerator pedal is released. When the boost pressure has been released, this boost pressure control valve closes again so that pressure can be built up again if desired.
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