Cooling-water flow and heat transfer directly influences the cooling efficiency of diesel engine, thermal load of high temperature components, heat distribution of engine and energy utilization.
冷却水的流动与传热直接影响柴油机的冷却效率、高温零件的热负荷、整机的热量分配和能量利用。
In the process of diesel engine manufacturing, the cooling efficiency of the casting core of cylinder head is critical to the thermal stress analysis.
在内燃机的生产过程中，气缸盖铸造水芯的冷却效率对于发动机的热应力分析至关重要。
Engine performance is expressed in terms of brake thermal efficiency.
发动机的性能表现在刹车的热效率。
Through experiment, the relation figures of engine rotation speed, coefficient of performance of heat pump and engine thermal efficiency are presented and analyzed.
通过实验，得出了发动机转速与热泵性能系数、发动机热效率的关系曲线，并进行了分析。
Under the load characteristic of operation, the brake specific fuel consumption and effective thermal efficiency is almost similar to that of gasoline engine.
在负荷特性工况运行时，混合燃料发动机的有效燃料消耗率和有效热效率与汽油机基本相当；
The engine was very smooth in operation but had one very marked disadvantage-thermal efficiency was only about 4 %.
该机在运转方面是很平稳的，但有一个明显的缺点，热效率仅为4 ％左右。
Dual working fluid parallel-compound cycle engine is a relatively new type of thermal engine which is characterized by a high efficiency and enhanced specific power.
双工质平行-复合循环热机是一种较新的热机，它能达到高效率和高比功。
The recovery of residual heat from gas engine has a great effect on the improvement of the total thermal efficiency of the system.
燃气发动机余热回收对系统总热效率的提高影响很大。
The company described the engine as having "a longer stroke and larger displacement", that would increase torque from low to high RPMs, and increase "thermal efficiency."
该公司介绍了发动机具有“长冲程大位移”，这将增加扭矩从低到高客运，增加“热效率。”
The company described the engine as having "a longer stroke and larger displacement", that would increase torque from low to high RPMs, and increase "thermal efficiency."
该公司介绍了发动机具有“长冲程大位移”，这将增加扭矩从低到高客运，增加“热效率。”
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