Fuzzy adaptive energy-saving technology for static hydraulic grader

Differing from the traditional mechanical and hydrokinetic-mechanical graders and basing on the power transmission principles of static hydraulic grader, this paper describes the mechanism that the reasonable matching optimization of the operating point of component parts can reduce significantly the fuel consumption of the whole machine, brings forward the fuzzy energy-saving method for the static hydraulic grader. Taking the grader gears as the control basis, the corresponding engine speed together with the displacement parameters of the hydraulic pump and hydraulic motor are outputted by the fuzzy adaptive controlling method and thus enable the grader transmission system adapt to the frequent changes of external load while fulfill the energy-saving target. A prototype is developed to test the abovementioned energy-saving method in the light and heavy load conditions, and the test result shows that the energy-saving method proposed here in this paper can save energy for more than 10% than the traditional transmission system and thus a good energy-saving effect is achieved.