论文部分内容阅读
为防止キハ25型内燃动车柴油机喷油器水套破损造成的车辆故障,查明水套破损的原因是冷却水流速差变大并在高温环境下发生了气蚀.经研究决定采用提高水套强度的措施来防止水套破损.介绍喷镀表面处理加工提高水套强度的方法.经装车试验验证,喷镀表面加工能有效防止水套破损.
喷油器水套破损研究
【摘 要】
：
为防止キハ25型内燃动车柴油机喷油器水套破损造成的车辆故障,查明水套破损的原因是冷却水流速差变大并在高温环境下发生了气蚀.经研究决定采用提高水套强度的措施来防止水套破损.介绍喷镀表面处理加工提高水套强度的方法.经装车试验验证,喷镀表面加工能有效防止水套破损.
【出 处】
：
国外铁道机车与动车
【发表日期】
：
2022年2期
其他文献
Metasurfaces have proven themselves an exotic ability to harness light at nano-scale, being important not only for classical but also for quantum optics. Dynamic manipulation of the quantum states is at the heart of quantum information processing;however,
Impurity doping is an effective approach to tuning the optoelectronic performance of host materials by imparting extrinsic electronic channels. Herein, a family of lanthanide (Ln3+) ions was successfully incorporated into a Bi:Cs2AgInCl6 lead-free double-
Direct generation of chirp-free solitons without external compression in normal-dispersion fiber lasers is a long-term challenge in ultrafast optics. We demonstrate near-chirp-free solitons with distinct spectral sidebands in normal- dispersion hybrid-str
As smaller structures are being increasingly adopted in the semiconductor industry, the performance of memory and logic devices is being continuously improved with innovative 3D integration schemes as well as shrinking and stacking strategies. Owing to th
In response to the COVID-19 pandemic, governments worldwide imposed lockdown measures in early 2020, resulting in notable reductions in air pollutant emissions. The changes in air quality during the pandemic have been investigated in numerous studies via
日本铁道综合技术研究所以新干线列车提速至400 km/h为目标,近5年来一直致力于提高制动系统和集电系统性能的研究.在制动系统方面,进行了提高盘形制动耐热性及制动力的研究,开发出风阻制动装置和线性电机式轨道制动装置.在集电系统方面,以降低受电弓噪声、提高受电弓跟随性为目标进行了多段式弓头的开发,并对适应列车提速的接触导线结构进行了研究.
为避免转向架构架内部焊缝引发的重大事故,研究制定转向架构架超声波探伤方法.利用加工有基准缺陷的实物模型进行试验,制定出判断缺陷的探伤法及实车转向架构架槽焊裂纹的判断流程.
文章从结构、效率、装车应用等方面对俄罗斯两种常见的冷却装置——吸收式及压缩式——进行了对比,对二者的优劣势进行了分析,得出吸收式冷却装置更适用于俄内燃机车、动车的结论.
为实现铁路减排目标,相较于更换处于寿命中期的内燃机车、动车,对其进行尾气处理改造、加装排气后处理系统更具经济可行性.文章对英国铁路的内燃牵引动力应用现状进行了分析,介绍了排气后处理系统的研发及试验情况,对未来的应用前景作了预测.