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配备3530瓩(4800马力)柴油机的CC72075内燃机车在去年(1975年)十月份进行了三期试验。两年前曾以这台柴油机进行过试验,自那以后,CC72075内燃机车以这台柴油机又运行了四十二万公里,运行正常,没有进行过大修。效果非常令人满意。新的试验的目的是试验柴油机,一方面想试验其在机车重载货运工况下的情况,另一方面想试验其在机车客运工况下的情况。实际上在1973年就进行过类似的试验,但从那次以后柴油机功率已从3100瓩增加到3530瓩,柴油机转速从1050转/分增加到1100转/分。
CC72075 diesel locomotive with 3530 瓩 (4800 hp) diesel engine carried out three tests in last year (October 1975). Two years ago, this diesel engine was tested. Since then, the CC72075 diesel locomotive has run another 420,000 km with this diesel engine and is operating normally with no major overhaul. The effect is very satisfactory. The purpose of the new test is to test a diesel engine, on the one hand, to test its condition under heavy freight shipping conditions and, on the other hand, to test its condition under locomotive passenger conditions. A similar experiment was actually conducted in 1973, but since then diesel engine power has increased from 3100 到 to 3530 瓩 and the diesel engine speed has been increased from 1,050 rpm to 1,100 rpm.