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Effect of Engine Friction on Vehicle Fuel Economy during Warm-up  

Lim, Gun-Byoung (School of Mechanical Engineering, Ajou University)
Wi, Hyo-Seong (School of Mechanical Engineering, Ajou University)
Park, Jin-Il (School of Mechanical Engineering, Ajou University)
Lee, Jong-Hwa (School of Mechanical Engineering, Ajou University)
Park, Kyoung-Seok (School of Mechanical Engineering, Kumoh National Institute of Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.6, 2008 , pp. 109-114 More about this Journal
Abstract
An improvement of vehicle fuel economy is one of the most important topic in automotive engineering. Lots of engineers make efforts to achieve 1% of fuel economy improvement. Engine friction is an important factor influencing vehicle fuel economy. This paper focuses on effect of engine friction on vehicle fuel economy during warm-up. A computer simulation is one of the powerful tools in automotive engineering field. Recently Simulation is attempting to virtual experiment not using expensive instruments. It is possible to presuppose fuel economy by changing the characteristic of accessories using CRUISE(vehicle simulation software). In this paper, fuel consumption at each part of the vehicle is analyzed by both of experiment and simulation. The results of fuel economy analysis on experiment substitute for Cruise to calculate fuel economy. The simulation data such as engine speed, brake torque, shift pattern, vehicle speed, fuel consumption level is well correlated to experiment data. In this paper, the change of warm-up time, faster or slower, through simulation is performed. As a result of the fast warm-up, fuel economy is improved up to 1.7%.
Keywords
Fuel economy; Simulation; Accessory; Engine friction; Engine oil warm-up;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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