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液气缓冲器工作时,车辆冲击动能大部分转化为热能,使液气缓冲器内的油液和气体温度升高,向周围环境放热逸散。分析了液气缓冲器被撞击前后,缓冲器内流体体积、压力和阻抗力的关系,推导了套缸式液气缓冲器的缓冲能量、气体吸收能量、油液耗散能量计算公式,提出了套缸式液气缓冲器缓冲过程中油液和氮气温升计算方法,结合车辆连挂实际,给出了套缸式液气缓冲器缓冲过程中油液和氮气温升计算算例。
During the operation of the liquid-gas buffer, most of the kinetic energy of the vehicle’s impact is converted into heat so that the temperature of the liquid and gas in the liquid-gas buffer rises and dissipates heat to the surrounding environment. The relationship between fluid volume, pressure and resistance in the buffer before and after the impact is analyzed. The formulas of buffer energy, gas absorption energy and oil dissipation energy are deduced. The calculation method of the temperature rise of oil and nitrogen during the cushioning process of the cylinder-type liquid-gas buffer is presented. The calculation example of the temperature rise of the oil and nitrogen during the cushioning of the cylinder-type liquid-gas buffer is given in the light of the fact that the vehicle is hung.