Hybrid limitator of speed-couple (EHL) for variable capacity pumps

To optimise the performance of thermic engines independently of the load is a very difficult problem. In open cycle application for mobile use variable capacity pumps with control of various kinds can solve the problem to a certain degree but difficulties in the power control will remain. A hybrid electrohydraulic control system with couple and speed limitation can solve most of these problems and the use of fuzzy technology makes it very robust.