An Innovative Turbo Compound Internal Combustion Engine Concept for UAV Application

摘要

Conventional Internal Combustion Engines (ICE) are limited in compression ratio by the detonation or pre-ignition. This limits the thermal efficiency of these engines, resulting in higher SFC and toxic emissions. In contrast, diesel engines with direct fuel injection operate at much higher compression ratios and leaner fuel-air ratios resulting in much higher efficiency. However, as the fuel is not pre mixed, it results in significant combustion delay time and lower efficiency. Furthermore, Diesel engines do not use spark plugs to ignite the fuel. This also results into inefficient fuel ignition and combustion. The proposed concept, herein, addresses some of these short comings of conventional IC Engines and provide an innovative solution that has the potential to provide low Specific Fuel Consumption (SFC), higher efficiency, and lower emissions.