Oil Strategies Benefits over Different Driving Cycles using Numerical Simulation

作     者：Hanna SARA David CHALET Mickael CORMERAIS Jean-Francois HETET 

作者机构：Ecole Centrale de NantesLHEEA lab.(ECN/CNRS)NantesFrance MANN+HUMMEL FranceLavalFrance 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2017年第26卷第4期

页      面：371-377页

核心收录：

学科分类：082304[工学-载运工具运用工程] 08[工学] 0823[工学-交通运输工程] 

主　　题：Thermal management Hot oil storage Oil sump Oil viscosity Fuel consumption 

摘      要：95 g/kin is the allowed quantity of CO2 emission normalized to NEDC to be set in 2020. In addition, NEDC will be replaced by more severe driving cycles and will be united worldwide. To respond to those criteria, automotive industries are working on every possible field. Thermal management has been proved to be effective in reducing fuel consumption. Cold start is a primordial reason of ovcrconsumption, as the engine highest efficiency is at its optimal temperature. At cold start, the engine＇s oil is at its lowest temperature and thus its higher viscosity level. A high viscosity oil generates more friction, which is one of the most important heat losses in the engine. In th/s paper, hot oil storage is studied. Numerical simulations on GT-suite model were done. The model consists of a 4-cylinder turbocharged Diesel engine using a storage volume of 1 liter of hot oil. Ambient temperature vari- ation were taken into consideration as well as different driving cycles. Furthermore, different configurations of the thermal strategy （multifunction oil sump） were proposed and evaluated. Lubricant temperature and viscosity profiles are presented in the article as well as fuel consumption savings for different configurations, driving cycles and ambient temperatures.