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美国伯灵顿北方铁路公司已开始在一台SD-40-2型电传动内燃机车上进行燃用甲烷的试验。通过一套控制系统,可确保机车的性能不受影响。改装工作主要包括:改用不同型式的活塞和气缸盖;加装一套发动机在起动工况和低速工况时燃用柴油的控制系统;加装甲烷管路和甲烷漏泄检测系统。甲烷须装在一个加挂在机车后面的大容量钢质罐车里。据伯灵顿北方铁路预计,机车改烧甲烷,
Burlington North Railway Company of the United States has begun the test of methane burning on an SD-40-2 electric drive diesel locomotive. Through a control system to ensure that the locomotive performance is not affected. Refit mainly include: the use of different types of pistons and cylinder head; install a set of engines in the start-up conditions and low-speed operating conditions diesel fuel control system; installation of methane pipeline and methane leak detection system. Methane must be installed in a large steel tank car attached to the back of the locomotive. According to Burlington Northern Railway is expected, the locomotive to burn methane,