Research On Application Of AC Electrical Dynamometer In The Experiment

With the continuous progress of human society development and science and technology, puts forward more requirements on the testing technology of internal combustion engine performance, especially the domestic requirements for engine displacement to 2018 will be upgraded to national V and national VI standards, manufacturers in order to pursue a more superior and more environmental model for the internal combustion engine, its development and application, advanced engine test bench testing equipment become indispensable, and according to the current domestic market, more dynamometer for multi cylinder diesel engine used in the test, mainly water vortex dynamometer, eddy current dynamometer and electric dynamometer. As a kind of test equipment, reasonable selection of dynamometer, test and production test of R & D power products is extremely important factor.This research is the processing and analysis of electric power dynamometer test signal to the engine of the car in the dynamic testing, and its advantages in measuring device in the. The basic working principle and stability of measured dynamometer in the detailed analysis of all kinds of, to AC electric dynamometer advanced loading, high reliability, high stability and energy feedback for the design characteristics, carried out the analysis emphasis each advantage, and in-depth study of these advantages for engine performance test and tail gas test provides the necessary conditions for accurate the data.First of all, to AC electric dynamometer as the center, analysis of its superior loading, especially the performance of the load test in the medium and small power, can take into account all the measured low and high speed loading test equipment, even in the performance of the load test engine speed, is even more over the other techniques, for rated the torque it can almost from the beginning of the 0 speed can provide power dynamometer.Secondly, the electric power dynamometer control system of testing engine-dynamometer and speed closed-loop control computer unit, through the parameter self-tuning fuzzy PID control, realize the dynamometer high stability and high reliability.Through the comparison of other types of dynamometer found, AC electric dynamometer are one of the greatest advantages of energy feedback function, it can be measured mechanical energy from a power to the form back to the grid, for other equipment use, rather than convert energy into heat energy consumed for AC electrical dynamometer use economy after construction can display.Finally, through the test and field test in large numbers, in concrete application made several technical improvements, making the AC electrical dynamometer is more practical in the experiment.