Study Of Xi’an Typical Sections Of City Bus Driving Cycles

To ease traffic congestion, xi "an advocate bus in advance, so urgent need to reflect theregion’s bus driving characteristics of representative driving cycles. Vehicle driving cycles aremainly used for the evaluation of vehicle and engine performance, fuel economy, its economy,power matching and optimization of vehicle design to provide important reference.For passenger car companies to provide vehicle power matching data, the basis of thepapers in xi ’an city bus operation, on the basis of selecting typical sections build xian citybus driving cycles. To the traffic laws of xi "an, bus lines and bus operation research, get thebasic characteristics of xi ’an city bus, and CNG city bus as the research object, using GPSwireless receiving module for data acquisition, data segmentation into several site movementrange and solving the characteristic value. Using principal component analysis and clusteranalysis of SPSS will site movement range is divided into categories represent differentoperating characteristics, to build xi ’an typical sections of city bus driving cycles, andcompared with other typical working condition characteristics of xi ’an city bus cycleconditions are obtained.Test vehicle simulation model was established based on ADVISOR, and established thexi ’an city bus driving cycles and national standard four conditions for hundreds of kilometersrespectively the simulation of gas consumption, compared with the actual hundred kilometersgas consumption by the national standard four conditions cannot really reflect thecharacteristics of the xi ’an city bus operation. Based on the established working condition ofxi ’an city bus cycle, through the analysis of the test vehicle performance and gas fueleconomy calculation, put forward in terms of engine power is equipped with both satisfy thepower performance and can improve the Suggestions for improvement of gas fuel economy,the energy conservation and emissions reduction, improve the environment has a veryimportant role.