02-11-2010, 11:40 AM
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turbocharger design
ABSTRACT
In these days of technological advancements in Automobile sector where mans penchant is to develop technologies that can improve the power and mileage of the vehicle TURBOCHARGER is one such exotic gadget.
Any engine needs air for combustion of fuel and it is the Air-Fuel ratio the decides the performance of an engine. Hence supply of air is an important task. During high speed operation of any engine there is not enough time for air to be sucked in the cylinder by itself (by the creation of vacuum during suction stroke).Hence the volumetric efficiency goes on decreasing as engine picks up speed as a result of which only partial combustion takes place. To fulfill the deficiency of air supercharging and consequently turbocharging came into picture.
A TURBO CHARGER is basically an exhaust gas driven air compressor which compresses the ambient air and sent this pre compressed (optionally Intercooled) air into the cylinder during suction stroke. It consists of two basic parts, the exhaust gas driven turbine and its housing, and the air compressor and its housing. The exhaust air from the engine spins the turbine and leaves while the compressor wheel, connected to the common shaft of turbine and compressor, compresses the ambient air and feeds it to the engine.
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