Study on the Criteria for the Determination of the Road Load Correlation for Automobiles and an Analysis of Key Factors

To determine the fuel economy and emissions of a vehicle using a chassis dynamometer, the load to which the vehicle is subjected when it actually runs on a road, or the road load specifications, must be simulated when the dynamometer is applied. The most commonly used method to measure road load specifications is coastdown testing. Currently, road load is measured and provided by the manufacturer of the vehicle. Verification of the accuracy of the manufacturer’s reported road load specifications by a third party may reveal that the specifications are inaccurate, possibly because of different testing locations, test drivers or test equipment. This study aims at identifying key factors that can affect a vehicle’s road load correlation by using experimental design and deriving criteria for determining the correlation based on the energy difference.

[1]  G. Kadijk,et al.  Supporting analysis regarding test procedure flexibilities and technology deployment for review of the light duty vehicle CO2 regulations , 2012 .

[2]  Thomas P. Yasin.  The Analytical Basis of Automobile Coastdown Testing , 1978 .

[3]  N. E. Ligterink,et al.  Dependence on technology, drivers, roads, and congestion of real-world vehicle fuel consumption , 2012 .

[4]  Adam Duran,et al.  In-Use and Vehicle Dynamometer Evaluation and Comparison of Class 7 Hybrid Electric and Conventional Diesel Delivery Trucks , 2013 .

[5]  A. Bandivadekar,et al.  From Laboratory to Road. A 2014 update of official and real-world fuel concumption and CO2 values for passenger cars in Europe , 2014 .

[6]  Richard Burke,et al.  Increasing accuracy and repeatability of fuel consumption measurement in chassis dynamometer testing , 2009 .

[7]  G. Kadijk,et al.  Road load determination of passenger cars , 2012 .

[8]  Alon Kuperman,et al.  Analytic Modeling of Vehicle Fuel Consumption , 2013 .

[9]  S. Hausberger.  Fuel Consumption and Emissions of Modern Passenger Cars , 2011 .

[10]  Jonathan Seth Stichter.  Investigation of vehicle and driver aggressivity and relation to fuel economy testing , 2012 .

[11]  Frank T. Buckley,et al.  ABCD - An Improved Coast Down Test and Analysis Method , 1995 .

[12]  Zissis Samaras,et al.  Use of a vehicle-modelling tool for predicting CO2 emissions in the framework of European regulations for light goods vehicles , 2007 .

[13]  C. Myung,et al.  Mobile source air toxic emissions from direct injection spark ignition gasoline and LPG passenger car under various in-use vehicle driving modes in Korea , 2014 .

[14]  C. E. Chapin.  Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques , 1981 .

[15]  H. H. Korst,et al.  The Determination of Vehicle Drag Contributions from Coast-Down Tests , 1972 .

[16]  Yunjung Oh,et al.  Modeling and Parameterization of Fuel Economy in Heavy Duty Vehicles (HDVs) , 2014 .

[17]  P. Mock.  The fuTure of vehicle emissions TesTing and compliance how To align regulaTory requiremenTs , cusTomer expecTaTions , and environmenTal performance in The european union , 2015 .

[18]  L. H. Yam,et al.  Modeling of Tire Rolling Properties by Using Experimental Modal Parameters , 2000 .

[19]  Mellios Giorgos,et al.  Parameterisation of fuel consumption and CO2 emissions of passenger cars and light commercial vehicles for modelling purposes , 2011 .

[20]  Zissis Samaras,et al.  On the way to 130 g CO2/km—Estimating the future characteristics of the average European passenger car , 2010 .