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本文介绍一种确定大功率多缸柴油机摩擦损失的新方法.该方法采用循环油量相同时求得多缸机和单缸机的摩擦功差值,结合单缸机的示功图求出柴油机随转速、负荷变化的摩擦功曲线,找出摩擦损失随转速和负荷影响的关系式,此关系式可以作为相似柴油机的经验公式.文中还介绍了采用这个方法可以确定单缸机与多缸机摩擦损失的相互关系,使单缸机较好地模拟多缸机的指示功率.
In this paper, a new method to determine the friction loss of high-power multi-cylinder diesel engine is introduced.The frictional power difference between multi-cylinder engine and single-cylinder engine is obtained by using the same amount of circulating oil, With the speed and load changes in the friction work curve to find the friction loss with the impact of speed and load relationship, this relationship can be used as an empirical formula similar to diesel engines. This paper also describes the use of this method can determine single-cylinder and multi-cylinder machine The relationship between friction loss, so that single-cylinder better simulate multi-cylinder machine instructions power.