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在３Ｅ１５０柴油机上，采用双喷射系统进行了燃用煤液化燃料的试验研究．试验结果表明，预先向缸内喷入少量柴油即可引燃煤液化燃料．采用这种方法可以获得较高的煤液化燃料代用率．和原机相比，能耗率和排放均有不同程度提高．
On the 3E150 diesel engine, a pilot study on coal liquefied fuel was conducted with a dual injection system. The test results show that a small amount of diesel oil can be injected into the cylinder in advance to ignite coal liquefied fuel. This method can be used to obtain higher coal liquefaction fuel substitution rate. Compared with the original machine, energy consumption and emissions have increased to varying degrees.