Vehicle Fuel Economy Research Based On The CDS-150Chassis Dynamometer Testing

Vehicle fuel economy is one of the most important performance of the vehicle, because the vehicle driving cycle depends on the climate, environment, load and other complex conditions, the test vehicle fuel economy is much more complex than the dynamic test, this complex is not the test method itself, but what method is more scientific and comparably to evaluate the vehicle fuel economy. The method for the determination of vehicle fuel economy in china and abroad have four methods, they are not control road test、control road test、 control on the road cycling test and chassis dynamometer cycle test. The control degree of various factors directly affect vehicle fuel economy of the precision, accuracy and comparability. In this paper, vehicle fuel economy test is cycle test of CDS150based on chassis dynamometer, the test according to the GB/T125451900"test method" car fuel consumption, and strictly control the climate, environment, load and other factors, from outside interference, complete the complex work condition cycle. Cycle test is the detection of vehicle fuel economy which had obtain, it has the advantages of the short test time, the simple test equipment and the data repeatability. Simulation of vehicle is running on the road according to the requirements of the regulations. To overcome the influence of the road test, such as road conditions, traffic conditions, driving habits, climate, environment and load. The moment of inertia of the drum set by software are Simulation of vehicle rotary inertia and vehicle motion quality of inertia。All kinds of resistance on the road load can be accurately simulation. To sum up, test vehicle fuel economy by chassis dynamometer and more scientific. This paper tested the Liuzhou Wuling light6376E3automobile fuel consumption. Using CD-150chassis dynamometer are emissions of automobile100km fuel consumption and speed test. After the test, we obtain two kinds of state (no-load and full load) of the constant speed fuel consumption test data. Finally, we get the car in the energy-saving technology to improve (no-load and full load) Q-V curves of constant speed. Experiments show that, after the car energy-saving technological transformation, it is more obvious at30km/h and40km/h oil saving effect. If it can be carried out on the test car (improvement before and after energy saving technology) fuel consumption test, respectively, to draw the Q-V curve, the curve is more visual comparison of fuel consumption is more clearly.