A new approach for energy recovery and turbocompounding systems for high altitude flight with common rail diesel engines

This paper introduces an original method for the preliminary calculations and the turbomatching of a dual stage high altitude turbocompounding system. This method is conceived to use modified automotive commercial turbochargers along with electric motor/generators. The method used is innovative and uses only the data commonly available from the manufacturer. In the example described herein, full power and throttle control are achieved up to 10, 000m (32, 000ft). The engine is a Common Rail Direct Injection Diesel engine derived from the automotive market. The calculation method and the problems connected are widely discussed. For this application turbocompunding is a good option that partially compensates the unavoidable increase in TOW (Take Off Weight). In drones that have relatively large batteries, the ERS (Energy Recovery System) does not increase the air vehicle mass. © 2006-2015 Asian Research Publishing Network (ARPN).