Downsizing and turbocharging is a popular method to cleanse fuel efficiency without compromising performance. However, smaller locomotives typically break insufficient torque at low engine speeds. trim back kick out temperatures, lower pressures and mass moment of inertia of the turbocharger computer hardwargon result in slow pressure build up while accelerating from low engine speeds. Turbochargers are typically knowing for low clear mass flow rates. At high engine speeds or higher loads part of the exhaust flow is diverted past the turbine by the wastegate to prevent engine overloading, hence, wasting exhaust energy.
This paper discusses a method to disconnect the turbine and compressor sides of a turbocharger using electric supercharging and turbo-generation for a downsized diesel engine. This enables flexibleness in control of intake air pressure and allows firm pressure build up, independent of the engine exhaust flow. A simulation model of the Diesel engine, the electrically impelled compressor and the turbo-generation frame are developed and integrated. Then, control of the electric motor driven compressor is simulated for various engine operating conditions. A incorporated load control scheme for the turbo-Generator is developed in assemble to maintain electric energy balance in the system.
Finally, this system is tested on standard test cycles and compared with currently in stock(predicate) solutions.
Introduction
Strict government regulations and costumer demand of greener engines take on pushed the self-propelling manufacturers towards development of low emission vehicles. NOx, HC, CO and particulate emission control is a major portion of regulations that automotive manufacturers have solved, so far, by adopting advanced combustion technologies and exhaust after-treatment devices. carbon dioxide emissions, identified as a major practice of the greenhouse effect, need further attention as they are the result of complete combustion. Consequently, the only way to reduce CO2 emissions...If you want to get a full essay, order it on our website: Ordercustompaper.com
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