有效热效率

高负荷时发动机有效热效率增加而CO排放基本相当。

However , the brake thermal efficiency increases and the CO emissions almost equal at high loads .

在同一引燃柴油量下，HC排放呈先增加后减少的趋势，增加引燃柴油量，可以提高发动机低负荷时的有效热效率和降低HC排放，但在高负荷时，会导致NOX排放增加。

The HC emissions increase then decrease under the same pilot diesel quantity . Low brake thermal efficiency and excess HC emissions at light loads can be improved by increasing the amount of pilot diesel at the cost of high NOX emissions at high loads .

内燃式水动力装置有效热效率特性

Effective thermal efficiency character of internal combustion water power device

通过试验研究了内燃式水动力装置的有效热效率特性。

The effective thermal efficiency character of internal combustion water power device is studied through experiment .

相同有效热效率水平下包含的工况明显比传统内燃机驱动柱塞泵系统宽广。

The working conditions in same effective efficiency level of the device is wider than internal combustion engine driving plunger pump system .

定义了系统最佳有效热效率区和最佳有效热效率特性曲线并与传统内燃机驱动柱塞泵系统进行了比较。

The optimal effective thermal efficiency working zone and optimal effective thermal efficiency curve are defined and compared with traditional internal combustion engine driving plunger pump .

在中、高负荷时有效热效率高于原机，但在低负荷时还低于原机。

The specific energy consumption is lower than that of the original diesel engine at medium and high engine loads , but is higher at low loads .

同时分析了提高压缩比并掺水蒸气后有效热效率提高的主要来源是燃料&空气理想循环热效率的提高。

Concurrently analyzed is that improvement of effective thermal efficiency after rise in compression ratio and water injection is resulted from thermal efficiency promotion of fuel-air ideal cycle .

全工况有效热效率比传统内燃机驱动柱塞泵系统改善13.63%～74.45%。

The effective thermal efficiency in total working conditions of the device is higher than traditional internal combustion engine driving plunger pump by 13.63 % - 74.45 % .

仿真结果显示，前者与后者相比，除流量较少降低外，其他工作性能指标，如有效热效率、燃油消耗率、运转不均匀度、有效功、输出压力等均有大幅度改善。

The simulation results demonstrated that many performance indexes of the former , such as effective thermal efficiency , fuel consumption , running unevenness , effective work , output pressure and so on have been improved obviously compared to the latter , but flow decreased slightly .

在标定负荷时，发动机燃用甲醇量最大可达甲醇、柴油消耗量的80%以上（按重量计），有效热效率最高值为38.3%，比燃用纯柴油时提高了6.1%。

Under rated load conditions , the quantity of methanol can be burned up to 80 % of the total weight of methanol and diesel fuel consumed with a brake thermal efficiency of 38.3 % which is 6.1 % higher than that when only diesel fuel is used .

该窑采用以热隔热、变废为宝，可大大降低窑炉的热损耗，有效提高热效率。

The utility model insulates heat be heat , changes wastes into valuable objects , reduces the heat loss of kilns and effectively enhances heat efficiency .

对于加热炉热效率的控制，其关键问题在于寻找到一种有效可靠的热效率在线软测量方法。

For the control of heating furnace thermal efficiency , the key problem is to find the online reliable and effective estimation of thermal efficiency .

冷凝式热水器具有相当大的节能潜力，降低排烟温度可有效提高热水器热效率。

The condensing water heater has a considerable energy-saving potential , and reducing the flue gas temperature can effectively enhance the thermal efficiency of gas water heater .

此案例计算结果说明利用最佳烟气含氧量作为标准优化调节电站锅炉燃烧系统，可有效提高机组的热效率，改善锅炉燃烧的能源利用率，降低煤耗。

This case the best results illustrate the use of flue gas oxygen content regulation as a standard boiler combustion optimization system , which can effectively improve the thermal efficiency of the unit , to improve the energy efficiency of the boiler combustion and reduce coal consumption .

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；

Under the load characteristic of operation , the brake specific fuel consumption and effective thermal efficiency is almost similar to that of gasoline engine .

随着BED多组份燃料含氧量的增加，动力性和有效燃油消耗率降低，有效热效率提高。

When the BED multi-component fuel were used , the engine power and brake specific fuel consumption reduced with the increase of fuel oxygen content , and the effective thermal efficiency was improved .

结果表明，柴油机采用EGR后，由于废气的引入，使柴油机的平均有效压力、输出功率和有效热效率随着EGR率的增加而降低。

The results showed that when EGR ratio was increased , an associated consequence of it was the reduction in the mean effective pressure , power output and thermal efficiency of the engine .

研究结果表明，采用挥发性好的燃料，可有效降低排气烟度，提高有效热效率，在发动机热状态不好及压缩比较低等燃烧条件恶劣、HC排放高的情况下，可有效地降低HC排放。

Results showed that under poor combustion conditions , such as low cooling temperature or low compression ratio , better volatile fuel emits less THC and smoke , achieves better thermal efficiency .

实验结果表明：在外特性工况运行时，甲醇-汽油混合燃料发动机的输出功率在高转速时略高于汽油机，有效燃料消耗率比汽油机低，有效热效率比汽油机高；

The result shows that under the speed characteristic of full load , the power output of blended fuel engine is slightly higher at high engine speed , the brake specific fuel consumption is lower , and the effective thermal efficiency is higher compared with gasoline engine .

研究结果表明，随着燃料中二甲氧基甲烷掺混比例的增加，有效燃油消耗率有所增加，但折算成当量柴油的有效燃油消耗率降低，有效热效率增加。

The results show that the brake specific fuel consumption ( b.s.f.c. ) is increased while the diesel equivalent brake specific fuel consumption is decreased and the thermal efficiency will increase with the increase of dimethoxymethane ( DMM ) fraction in the blends .