Here’s what’s inside a turbocharger and how it works on your car!
A turbocharger uses exhaust flow to spin a turbine, which in turn pressurizes the air coming into your engine’s intake. Air that is pressurized will force more air into the engine per intake stroke, and by adding fuel, the engine can create more power without increasing its displacement.
Turbocharging has become very common place in recent times due to stricter emissions requirements and compact vehicle designs. Turbocharged engines include the turbocharger, waste-gate (or boost controller, as in the case of a variable geometry turbocharger), intercooler, intake manifold, air intake box in addition to a host of plumbing and vacuum lines to control it all.
Having a turbocharger increases complexity and may affect reliability. With all the additional components over a naturally aspirated engine and by over-stressing a smaller engine, users may not get advertised fuel economy or longevity typically expected from a naturally aspirated one.
The engine and turbocharger featured in this video is from a 2006 Volkswagen Jetta TDI. Skip to 6:03 for the teardown.
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