前言在毛主席“独立自主、自力更生”方针的指引下,我国自行设计、制造的16V200机车用柴油机,在较短的时间内试制出来了。该机具有较高的强化指标。因机车在运行中工况变化频繁,承受热负荷的活塞经常处于交变热负荷的作用下;曾多次发生热应力引起的破坏事例。因而有必要深入研究活塞热状态。这次实验是在实测活塞温度的基础上,着重用模拟方法建立活塞温度场。为使模拟更能反映真实情况,用有限元素法在电子计算机上进行计算;这样较为完整地了解活塞的温度状 Foreword Under the guidance of Chairman Mao’s principle of “independence and self-reliance,” the 16V200 locomotive diesel engine designed and manufactured by our country was trial-produced in a relatively short period of time. The machine has a higher fortified index. Due to frequent changes in locomotive operating conditions, to withstand the heat load of the piston is often under the action of alternating heat load; has repeatedly caused by thermal stress damage cases. Therefore, it is necessary to study the hot state of piston deeply. The experiment is based on the measured piston temperature, focusing on the simulation method to establish the piston temperature field. In order to make the simulation better reflect the real situation, the finite element method is used to calculate on the electronic computer. In this way, a more complete understanding of the piston temperature