Abstract
In this paper, a component restricting pressure change caused by oil temperature change is proposed. One of the merits of an oil-hydraulic system is to keep the value of oil pressure when pressurized oil is enclosed in a container. However, it is impossible to keep the value when the temperature of the oil is changed. Using a pressure control sub-system to prevent it, the whole system becomes complicated. In addition to it, the energy is consumed when the pressure is adjusted by the quantity of the oil flowing into or out the container. From these view points, it is effective to develop the component which prevents the pressure change according to the oil temperature change without the control of the quantity of the oil. Therefore, in this paper, a component to prevent the pressure change based on the oil temperature change is proposed to make the merit of oil-hydraulic system certain when the temperature of the oil is changed. And, in the cases where the temperature of the oil is increased and where the temperature of the oil is decreased after it is increased, the basic characteristics of the component investigate experimentally.
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