Turbocharger Design Criteria, Selection and Failure
This paper presents step by step design procedure and considerations while matching a turbocharger to a specific
engine. One simple and efficient way of matching a turbocharger to an engine is the “Ballpark Matching” technique.
Turbochargers are the most efficient horsepower supplementing unit in a vehicle, and its installation requires changing
certain components of an engine, and sometimes even installing completely new parts in the engine, like aftercoolers. For
heavy duty purposes where it is targeted to increase the horsepower by more than 50%, we have to do certain changes in the
crankshaft, piston and other parts of an engine. Once a turbocharger is selected and installed, the next step is tuning the
turbocharger according to the fuel injection characteristics and extracting maximum out of the turbocharger. The last and
most important phase is the failure analysis and detection in a turbocharger. Certain typical turbocharger failures will be
discussed along with troubleshooting.
Indexterms - Turbocharger Matching, Tuning, Compressor, Wastegates, Anti Lag Systems