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C919客机所采用的LEAP-X1C发动机是CFM国际公司为下一代窄体客机研制的新型号,其可靠性与CFM56相当,但油耗可降低12%～15%,氮氧化物排放比CAEP6的标准低50%,噪声可以满足ICAO第四阶段要求并留有12～15分贝的余量,是当前所有在研发动机中最为先进的型号之一。
The LEAP-X1C engine used on the C919 passenger aircraft is a new model developed by CFM International for the next generation of narrow-body passenger aircraft. Its reliability is comparable to that of the CFM56 but its fuel consumption can be reduced by 12% -15%. NOx emission is lower than that of CAEP6 50% of the noise can meet the ICAO Phase IV requirements and leave 12 to 15 dB margin, is currently one of the most advanced motivation in the development of one of the models.