The influence of number and values of ratios in stepped gearbox on mileage fuel consumption in NEDC test and real traffic

Scientific Conference on Automotive Vehicles and Combustion Engines 2016

Bera, P.^1 ; Wdrychowicz, D.^1

AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Department of Machine Design and Technology, Cracow, Poland^1

关键词: Combustion engines;    Dynamic property;    Engine test bed;    Quantitative assessments;    Real traffic;    Road traffic;    Transmission parameters;    Virtual simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/148/1/012001/pdf
DOI  :  10.1088/1757-899X/148/1/012001

来源: IOP

【 摘 要 】

The article presents the influence of number and values of ratios in stepped gearbox on mileage fuel consumption in a city passenger car. The simulations were conducted for a particular vehicle characterized by its mass, body shape, size of tires and equipped with a combustion engine for which the characteristic of fuel consumption in dynamic states was already designated on the basis of engine test bed measurements. Several designs of transmission with different number of gears and their ratios were used in virtual simulations of road traffic, particularly in the NEDC test, to calculate mileage fuel consumption. This allows for a quantitative assessment of transmission parameters in terms of both vehicle economy and dynamic properties. Also, based on obtained results, recommendations for the selection of a particular vehicle for a specific type of exploitation have been formulated.