These segments assembled the engine model with property of dynamic and static state in the whole operating range.
由这若干个小偏差动态模型组合成描述全工作范围动、静态特性的发动机模型。
The performances of diesel engine are improved by higher swirl in the operating range of low speed and high load.
在高速区降低进气涡流强度，发动机的性能和排放均有明显改善。
Since the engine is operating at its optimum power range, excellent fuel economy and less gas emission are also obtained.
另一个是发动机正在运转以来在其最佳功率范围内，好的燃油经济性和减少气体排放也获得了。
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