Abstract In order to improve the work efficiency of the automatic power steering system ，the energy consum ing of the center-opened and center-closed kinds of hydraulic power steering system are analyzed by using the statistic data acquired from experim ents in the condition of the typical route．After evaluating the econom y and environm ental protection of the four kinds of steering system in different principle， we can get the conclusion that several technological problems should be solved before the center—closed hydraulic pow er steering system can be widely used in practice though it has great advantage in energy saving．
LI Yi-Ran, QUAN Long. Analyzing and com paring energy—dissipating character of hydraulic power steering system. Chinese Journal of Engineering Design, 2002, 9(3): 131-135.
