Turbocharger Case Study Solution

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I. INTRODUCTION A turbocharger is device as important part of all multicylinder diesel engines. Turbocharger is an exhaust gas driven induction device used in I.C. Engine to improve engine performance. This is done by forcing compressed air into the combustion chamber allowing more fuel to be burned resulting in a large air fuel ratio, large power & the method is called turbo charging. These devices use the energy of exhaust gases out from engine to run the turbine that in turns the air-compressor that provides. Now a day’s Waste gate operated turbocharger are also becoming popular now a days. Waste gate valve bypasses the flow that is coming from exhaust so that we can vary speed of turbine. It has certain effect of emissions that is being …show more content…

[1]Attention was paid to the exhaust emissions that is CO, HC and CO2.The engine was tested at three speeds within the entire load range. The results shows that the Wastegate TC is has less emissions than normal TC that is wastegate TC is advantageous at high loads at low and medium speeds. At rated speed, however, the Standard TC proved better than the WG one.[1]How Boost pressure influences the engine torque, power, and efficiency and exhaust emissions was studied by Sritharrajoo [3].Itmentioned that the incorporation of intercooler to the turbocharger system increases the performance even further. As per conclusion it is mentioned that addition of the turbocharger increased the maximum output of the engine and reduction in emission at the speeds above 2000rpm.Also HC and CO emissions are reduced when the engine is turbocharged compared to its stock naturally aspirated condition [3].The effects of turbocharger on the performance of a diesel engine using diesel fuel and biodiesel in terms of BP, torque, BSFC and thermal efficiency, as well as CO and NO emissions was also investigated[2] For this used biodiesel was rapeseed oil methyl ester, at full load condition at the speeds between 1200 and 2400 RPM. Emissions of CO in the operations with biodiesel were less than those in the operations with diesel fuel, whereas NO emission in biodiesel operation was found higher [2].Effects of different opening ranges of waste-gate on the exhaust soot emission of a turbo-charged DI diesel engine was investigated [5].How Waste-Gate Turbocharging Controlled in Automotive SI Engines and its Effect on Steady and Unsteady Turbine Performance is

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