Research Of Vehicle Fuel Consumption Model And Prediction Calculation Based On Driving Sytle And Route Feature

World car production is mainly concentrated in the Asia-Pacific region, Europe and North America. China’s automobile production in2009increased by48.3percent, reaching13.791million, jumped to first in the world. With the dramatic increase of automobile production, sales and ownership, pressure from automobile industry on environment is becoming increasingly obvious.Vehicle fuel consumption is a key economic indicators in the car used in the process. The topic of this thesis based on developing the fuel consumption model which can include different influences from driving characteristics and road surface characteristics, took gasoline and diesel fuel vehicles as example, analyzed how driving behaviors and road characteristics impacts vehicle fuel consumption, integrated real driving behaviors and road characteristics with fuel consumption model, in order to present a closer practical and more user sensory awareness fuel consumption prediction model and calculation method.This paper analyzes the theoretical basis for the calculation of fuel consumption, introduces fuel consumption computing systems. This paper points out that in order to establish the prediction model, the relationship among driving characteristics and road characteristics and driving cycle can first be found out, and then through the driving cycle to reflect the driving characteristics and road surface characteristics of the vehicle fuel consumption. In order to build up the link between driving characteristics and road characteristics and driving cycle status, a large number of experimental data analysis basis have been used to parameterize driving characteristics and road characteristic. The parameterized driving cycle can reflect real driving conditions and then make the fuel consumption forecast calculation closer to the actual vehicle fuel consumption. The thesis has mainly done the following works:(1) Proposed "speed-displacement driving cycle"Based on speed, time and displacement of the three basic physical conversion of the analog of the traditional driving cycle measured fuel consumption principle, the conversion speed-time loop displacement loop "to the" speed’(2) Completed a "driving process" parameter descriptionDriving process is divided into acceleration, deceleration and constant speed of three parts, combined with the speed limit, the parameter describes the high acceleration, slow acceleration, deceleration, difference of driving velocity and speed limit;(3) Completed the main road features and parameter descriptionsThrough the analysis of experimental data on the road and driving the speed limit on the basis of cornering speeds, with the corners of physical speed limit constraints, using a random number and speed describe the fork in the road behavior, the establishment of a cornering speeds constraints and road speed limit associated fork in the road speed interpolation curve;(4) Completed close to the actual fuel consumption of the computer simulationAssociated with speed reading and the real vehicle driving directions, driving characteristics and road characteristic parameter reference values, and the fork in the road behavior associated with the type of high-speed fork, draw a reasonable simulation results.