随着人们对能源短缺和环境保护的日益关注，降低发动机能源消耗和排放成为发动机开发的两个主要问题。
Reducing fuel consumption and engine emissions is the major objective in engine development in light of increasing concern about energy shortage and environmental protection.
柴油机供油提前角的正确与否直接关系到柴油机能否正常工作，并对其功率、燃油消耗率和排放标准都有直接的影响。
Whether the diesel engine fuel supply advance Angle exactitude or not, will directly affect the diesel engine's normal work, power, specific fuel consumption, emission standard, and so on.
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