Modeling of Synergy between the Thermal Systems and the Engine of a Vehicle for a Fuel Consumption Reduction
The international laws aim more and more to reduce the carbon dioxide emissions,especially in the ground transportation field.To keep up with these constantly restraining regulations,the automotive industry searches to better understand the impact of each subsystem in the vehicle on the global fuel consumption.Nevertheless,until now,almost no studies have been done on the impact of the cooling system performances and its design on the fuel consumption of an internal combustion engine.This paper aims to present a new approach for a complete vehicle modeling while taking into consideration the major interactions between the cooling system and its surroundings.Thus,along with the engine and the cooling system,the air admission system(charged air cooler and exhaust gas recirculation cooler),the lubricating system,the thermal inertias and the electric components are modeled.In order to have highly predictive and accurate results while keeping a reasonable calculation time,the engine model used is developed in two steps: starting with a high frequency engine model,various operating points are calculated.Then,using these results,a mean value engine model(MVEM)is built.This second model uses the concept of efficiencies maps to find the operating point,heat dissipation and fuel consumption.The results given by the model are compared to tests done on a vehicle with a similar engine displacement.The comparison is even made in transient motion.Such model will help comparing,energy wise,different cooling system architectures for a traditional vehicle.The next step will be using this model for hybrid electric vehicles and study the possibilities of energy recuperation for the cabin thermal management.
Cooling System Fuel Consumption Internal Combustion Engine Modeling Thermal Management
Samer SAAB Fran(c)ois CHARBONNELLE Jean-Fran(c)ois HETET Alain MAIBOOM
Valeo Thermal Systems,La Verrière,France (E)cole Centrale de Nantes,Nantes,France
国际会议
桂林
英文
1-13
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）