Estefanía Hervás Blasco
Universitat Politècnica de València, Spain
Estefanía Hervás Blasco is an Engineer from the Politechnical University of Valencia (UPV). She is a PhD student (on optimization of thermal systems consumption) at the Energy Engineering Institute within a team composed by Emilio Navarro Peris (he completed his PhD in 2006, is an assistant professor at the UPV and an experienced researcher who has a great number of publications) and José Miguel Corberán (he completed his PhD in 1984, a professor at the UPV, has published several books, has a great number of contributions to the science, is the main researcher for more than 25 years, the director of the Institute and, among others, the spanish represant of different International Institutions).
The growing need for a sustainable transport has brought researches a potential improvement of the engine thermal efficiency. In that line, more than 50% of the available energy from the fuel is not used in Gas Engines. In order to recover part of this energy, a global approach which integrates a combination of different alternatives to increase the system efficiency is of major relevance and in that direction the development of accurate models is crucial. In this contribution a dynamic model in order to analyze the potential of a new powertrain concept focused on the recovery of a portion of kinetic energy and waste gases heat is presented. The model analyzes the beltless engine concept based on the electrification of the main auxiliaries and the implementation of a kinetic energy recovery system and the use of the heat from exhaust gases through a thermoelectric generator and a turbo-component. The model has a modular structure allowing changes on the circuit configurations and on the present components. The model architecture makes easier the study and determination of the most suitable configurations, the optimum control of the system and the possible obtained benefits in terms of fuel saving for a target driving cycle based on European heavy duties roads, speed and torque. The global structure of the model allows anticipating the impact of every possible condition/element modification and gives the capability of analyzing the effect of the components within a whole system and not only in one part of it.