Research On The Different Features Of The Testing Of Roadway And Experiment Stand On The Power Of The Vehicle

Research on the different features of the testing of roadway and experiment stand on the power of the vehicle .The car is a high efficiency of transport, to some extent the transport efficiency depends on the vehicle dynamics. So dynamic is the car safe driving of vehicles and transport efficiency of the main factors. Therefore, the state provides the standard vehicle dynamics, vehicle dynamics and requirements to make regular checks, whether the proposed vehicle dynamics road vehicles passing is an important performance indicators, required the station to the vehicle dynamics testing. Now the stations are different types of vehicles using the same chassis dynamometer for the measurement of indicators, thus making a variety of models in the bench due to various factors by the resistance of the different measurement results lead to bias large, the measurement result is not scientific, accurate and up to less than detection purposes. Therefore, for the above situation, the road from the analysis of differences between bench and analyzes the main vehicle in the road test bench measurements with differences in power between the car and bench test the practical application of measurement to provide scientific, accurate theoretical basis.Audi A4L to this paper, dynamic detection of the relevant technical data, using the theory of scientific and rational basis, and ultimately map out a road vehicle dynamics and experimental test bench in the evaluation under the dynamic parameters of the chart, more intuitive by comparison chart the difference between the two dynamic features.Research papers include:(1) Access to a large number of research literature, analysis of dynamics of domestic and foreign car road test bench with different characteristics of thestatus .The A4L Audi car for dynamic testing, dynamic parameters for computing the basic theory of computation. (2) Testing and summary of large amounts of data, drawn vehicle dynamics parameters in the test stand and the road condition under the different charts, then compare a clear difference between the two properties.(3) The results after the completion of the above error analysis, the difference in characteristics of the two, which is the focus of this paper, respectively, from measurement errors caused by power mode, the power correction due to errors, errors caused by rolling resistance, acceleration resistance induced error, driver error caused by the force balance of six aspects of a comprehensive evaluation and analysis errors, and ultimately in the road and test bench analysis under the different characteristics, the improved method, the power of hope in the future testing process to be more scientific and rational people .1 will perfect it.In summary, this paper topic, research status, theoretical basis of dynamic calculation, data analysis and comparison of the differences and characteristics of the final evaluation and research, the system described in the vehicle dynamics under the bench and road test different characteristics, and proposed methods for improving the error and attention in the hope that this paper can research ideas and methods of testing later in the vehicle power technology to provide a little bit of scholars technical support and reference, that is, the author is willing to see.Since the writing of this paper in a hurry, negligence flaws are inevitable, hope the reader can correct me.