关键词: 油耗分析；技术归零；闭环管理；故障树

Abstract: Technical return-to-zero methodology is based on the theory of system engineering and the concept of closed-loop management, so as to effectively analyze the reasons of the failure while avoiding recurrence of the problem. There is an issue with a considerable difference in the fuel consumption of one tractor model after being delivered to customers and during their real usage. We conducted an in-depth analysis by using the technical return-to-zero methodology and pinpointed the cause of the error based on the analyzed results. After theoretically analyzing the failures that create differences in fuel consumption, we put forward improvement measures, validate with sliding tests, fuel consumption tests, ect., and then conduct troubleshooting for other models to prevent a similar issue from recurring in the future.

Key words: Fuel consumption analysis; Technical return-to-zero; Closed-loop management; Fault tree