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power reserve     
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  功率储备
     The test results are increased Locomotive power reserve,reliability and speed,decreased engine cylinder exhaust temperature and specific fuel consumption and prolonged overhaul life for important easily worn parts,namely achieved great economic and social benefits.
     结果表明:采用高压比JZH248 型涡轮增压器后,能提高东方红〈21〉型机车的功率储备,降低气缸排气温度和燃油消耗率,提高机车的运行可靠性及运行速度,延长重要易损件的大修期,可产生巨大的节能经济效益和社会效益
短句来源
     G170 model diesel engine is a new product substituting for G160 model diesel engine developed by Nanning Machinery Plant. It has good economy,reliability,durability and large power reserve.
     G170型柴油机是南宁机械厂自行开发的G16 5型柴油机的换代产品 ,它具有良好的经济性、可靠性、耐久性及较大的功率储备
短句来源
     This paper introduces the matching principle of engines and oil pumps of POL equipment, analyses the power for driving oil pumps and disovers that engines have some power reserve, and the engines shared by truck and oil pump have more power reserve when they drive oil pumps. That fuel consumption characteristics loops could be used to matching design is proposed.
     介绍 了油料装备发动机与油泵的匹配原则,分析了油泵和发动机工作时所需的动力,发现发动机 在驱动油泵时具有一定的功率储备,尤其是共用发动机具有较大的功率储备,提出利用发动 机万有特性曲线进行匹配设计。
短句来源
     It is shown that the designed rudder bubbles can increase the efficiency of propeller obviously,in which the dissymmetric rudder bubbleachieves energy-saving effect 5.1% and increases the power reserve of main engine up to 5% in real boat test.
     仿真计算表明,设计的舵球方案可有效地提高螺旋桨的水动力性能。 其中不对称型舵球方案在实船对比测试中获得了节能5.1%,提高主机功率储备5%以上的效果。
短句来源
     It is shown that the designed rudder bubbles can increase the efficiency of propeller obviously, in which the dissymmetric rudder bubble achieves energy-saving effect 5.1% and increases the power reserve of main engine up to 5% in real boat test
     仿真计算表明,设计的舵球方案可有效提高螺旋桨的水动力性能。 其中不对称型舵球方案在实船对比测试中获得了节能5.1%,提高主机功率储备5%以上的效果。
  动力储备
     Evaluation criterion of construction machinery engine's power reserve properties
     工程发动机动力储备性能的评价指标
短句来源
     According to the extent of the theoretic power external characteristic approached by the real power external characte. istic, the articleintroduces a new index of evaluation- the theoretic power characteristic factor KN and deduces aformula to compute KN. The factor can be used to evaluate the power reserve characteristic ofauto-engine synthetically.
     本文教根据实际内燃机的功率外特性曲线与理想外特性功率曲线的通过程度,引入一个新的评价指标——理想功率特性系数KN,并推导出求值公式,用来综合考察车用活塞式内燃机的动力储备性能。
短句来源
     A new comprehensive evaluation criterion of power reserve properties(power reserve factor K) is suggested and formulated. Contrasted with Km and Kn,and examined by the actual evaluation result,K is proved to be reasonable and feasible,it provides a theoretic criterion for the comprehensive evaluation of engine' s power reserve properties. 3 tabs,4 figs,10 refs.
     提出了新的动力储备性能综合评价指标——动力储备系数K,定义了其计算式,通过与Km和Kn的对比以及实际的评价结果检验,证明了其合理性和可行性,为准确全面评价发动机的动力储备性能及其选型提供了理论依据。
短句来源
  “power reserve”译为未确定词的双语例句
     The advantages and disadvantages of each kind of the methods as well as relevant application scope are discussed in detail. At the same time, some valuable suggestions for organizing power reserve service market are proposed in this paper.
     文中对各类备用辅助服务市场的组织模式、备用市场与电量市场进行协调等相关问题进行了研究 ,总结了电量市场与备用市场的交易决策方法 ,并提出了发电侧电力市场中备用市场运行模式的建议
短句来源
     Next, the paper analyses the relation between power reserve and reliability.
     基于响应时间对备用进行了明确的分类,分析了备用和系统可靠性的关系。
短句来源
     Application of Computer in Labour Power Reserve Management on Freeway
     计算机在高速公路人力资源管理中的应用
短句来源
     On the basis of analysing the mathematical model of generator reserve capacity, a computing formula of system reactive power reserve based on voltage stability is defined, and a multi-objective optimal dispatch algorithm of reactive power is proposed in which the reduction of network loss and that of voltage deviation as well as increase of reserve capacity of reactive power are included.
     文章在分析发电机备用容量数学模型的基础上,定义了基于电压稳定的系统无功备用容量的计算公式,提出了考虑增大无功备用容量、减少网络损耗以及减小电压偏移的多目标无功优化调度算法。
短句来源
     Applying the proposed algorithm to IEEE 30-bus system, calculation results prove that the defined computing formula of system reactive power reserve based on voltage stability is correct and the proposed optimal dispatch algorithm of reactive power is feasible.
     并将该算法应用于IEEE30节点系统,证明了所定义的基于电压稳定的系统无功备用容量计算公式的正确性及提高备用容量的无功优化调度算法的可行性。
短句来源
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  power reserve
Good results and a sufficient power reserve of the experiment have thus become the fundamental stepping stone of constructing a satellite laser radar system.
      
The possibility is shown for activating the power reserve of hydraulic tractor actuator.
      
The individual advantage in fatigue-resistance when performing a repeated sprint task was related with a lower anaerobic power reserve.
      
Further, inter-individual physiological variables were of significance for endurance time, % MHC I showing a negative and power reserve a positive relationship.
      
Endurance time was negatively related to V?O2max, W?90 and % MHC I, while positively related to power reserve.
      
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Due to the absence of common understanding among the naval architects,engine-builders and marine engineers,about the definition of marine diesel engine power rating,difficulties aroused by power deficiency in diesel-installations on board were frequently eneountered in service.This paper deals with diesel engine power rating from manufacturing and service point of view.The manufacturers should rate their engines into three ranks:maximum rating,nominal rating and over-nominal rating. The marine engineers should...

Due to the absence of common understanding among the naval architects,engine-builders and marine engineers,about the definition of marine diesel engine power rating,difficulties aroused by power deficiency in diesel-installations on board were frequently eneountered in service.This paper deals with diesel engine power rating from manufacturing and service point of view.The manufacturers should rate their engines into three ranks:maximum rating,nominal rating and over-nominal rating. The marine engineers should rate their auxiliary engines into two ranks,namely,normal service rating and overload rating,and their main propulsion engines into trial trip rating,maximum service rating and normal service rating.Scientific definifion of these ratings are explained and their empirical relati- ons are also given. The bases of nominal rating are standard ambiant atmospheric conditions and installation condi- tions.The author proposes that standard ambiant atmospheric conditions should be based on the mean conditions in the test shop of the most diesel engine factories throughout the country.However,the naval architects should rate their engines according to the particular conditions of the appointed navigation zone and the kind of service to be attained.Numerical data of ambiant atmospheric conditions and installation conditions proposed are:736mmHg.,20℃,70% humidity,and less than 150 mm WG vacuum in the intake air system,30~300mmHg back pressure in the exbaust system.The calculation method in practice for correcting nominal rating and specific fuel consumption according to the variations of ambiant atmospheric conditions differ largely one another.For non-supercharged diesel engines,new correction formulas according to constant fuel pump rack and constant fuel/air ratio respectively are recommended in the paper.The results of comparison of these proposed fornmlas with others in practice and also with published test data show that the recommended formulas are more reasonable,although the correction is still slighly too high. The ambiant conditions on board differ largely with those in test shop,so the determination of service rating depends upon the specification of ambiant atmospheric conditions in the machinery compartment.Three kinds of standard ambiant conditions in machinery compartment,for high sea,east- south sea and north sea-going ships respectively,are given in this paper.These numerical data are deter- mined by statistical method.In the determination of service rating,the influence of wear,rpm.,insta- bility and power reserve must be considered.Its empirical coefficients are introduced.Generally,the normal service rating for auxiliary engines is about 75~82% of the nominal rating from manufacturer and 70~99% for the main propulsion engines.

船用柴油机功率的定义在设计、制造和使用各方面缺少统一的理解,以致使用时常常出现柴油机功率满足不了需要的问题。本文提出船用柴油机功率分级应从制造及使用两方面分别加以考虑:从制造方面可分为最大功率、额定功率和超额功率三级;从船上使用方面,驱动发电机的付柴油机可分为持久功率及超额功率两级,而推进用的柴油机则应分为试航功率、最大使用功率和正常使用功率三级。本文给出了上述各种功率的科学定义和经验比例。额定功率的标定基础是标准大气条件和安裝条件,标准大气条件的选择原则应根据国内大部份柴油机车间的条件而定,而使用者別应根据具体航区和船的用途重新标定持久使用功率。本文建议的标准大气条件为736毫米汞柱,20℃和70%湿度,并提出进气系统真空度不超过150毫米水柱、排气背压应为30~100毫米汞柱。目前使用的各种额定功率及耗油率修正计算方法差别较大,本文对非增压柴油机分别按每循环供油量不变及燃烧空气过量系数不变两种情况提出了新的修正计算公式。运用本文介绍的公式计算结果与试验结果,比较表明本文建议的公式比较合理,但仍略偏于保守。船上机仓内的大气条件与工厂条件相差较大,投使用功率的选定应以机仓大气条件为准。作者根据统计提出适合在远...

船用柴油机功率的定义在设计、制造和使用各方面缺少统一的理解,以致使用时常常出现柴油机功率满足不了需要的问题。本文提出船用柴油机功率分级应从制造及使用两方面分别加以考虑:从制造方面可分为最大功率、额定功率和超额功率三级;从船上使用方面,驱动发电机的付柴油机可分为持久功率及超额功率两级,而推进用的柴油机则应分为试航功率、最大使用功率和正常使用功率三级。本文给出了上述各种功率的科学定义和经验比例。额定功率的标定基础是标准大气条件和安裝条件,标准大气条件的选择原则应根据国内大部份柴油机车间的条件而定,而使用者別应根据具体航区和船的用途重新标定持久使用功率。本文建议的标准大气条件为736毫米汞柱,20℃和70%湿度,并提出进气系统真空度不超过150毫米水柱、排气背压应为30~100毫米汞柱。目前使用的各种额定功率及耗油率修正计算方法差别较大,本文对非增压柴油机分别按每循环供油量不变及燃烧空气过量系数不变两种情况提出了新的修正计算公式。运用本文介绍的公式计算结果与试验结果,比较表明本文建议的公式比较合理,但仍略偏于保守。船上机仓内的大气条件与工厂条件相差较大,投使用功率的选定应以机仓大气条件为准。作者根据统计提出适合在远洋、东南海及比海航行的三种船舶之标准机仓大气条件;同时推荐了在送定使用功率计算中为考虑磨损、转速不稳性及功率贮备等因素所采用的系数。对于发电用的柴油机船上使用功率一般为额定功率的76~82%,对于推进主机则为70~79%。近年来,在我国船舶上,通常发现由于各方面对船用柴油机功率标定缺少统一妁理解,往往引起柴油机的实际使用功率超出其能力,以致引起柴油机超负荷、螺旋桨转速或发电量达不到设计要求,严重的甚至会引起发动机损坏。柴油机功率按不同大气条件的修正亦常常引起制造厂与验收部门的争执。这些问题虽然在我国有关标准中已作了某些规定,但仍有继续探讨的必要。本文着重对额定功率与使用功率的关系、标准大气条件的确定以及功率和耗油率按大气条件变化的修正等问题提出一些看法。

The power reserve property of automobile piston engine is generally indicated by the characteristic factor of torque-load and the accommodation factor of speed. Both of the factors can independently express the power reserve property of automobile piston engine but when the runningresistunce of automobile increases, they can not reflect the changing relation between the speeddecrease (range from nm-nN) and the torque increase of engine. The relation should be a syntheticindex to indicate the power...

The power reserve property of automobile piston engine is generally indicated by the characteristic factor of torque-load and the accommodation factor of speed. Both of the factors can independently express the power reserve property of automobile piston engine but when the runningresistunce of automobile increases, they can not reflect the changing relation between the speeddecrease (range from nm-nN) and the torque increase of engine. The relation should be a syntheticindex to indicate the power reserve property of engine. According to the extent of the theoretic power external characteristic approached by the real power external characte.istic, the articleintroduces a new index of evaluation- the theoretic power characteristic factor KN and deduces aformula to compute KN. The factor can be used to evaluate the power reserve characteristic ofauto-engine synthetically.

车用活塞式内燃机的动力储备性能通常用扭矩适应性系数KM、转速适应性系数Kn表示,这两个指标都能各自独立地反映车用内燃机的动力储备能力,但不能说明在汽车行驶阻力增大时,内燃机转速下降的同时、扭矩增加(在nm-nN范围内)之间的变化关系,而这应该是反映车用内燃机动力任务性能的一个综合性指标。本文教根据实际内燃机的功率外特性曲线与理想外特性功率曲线的通过程度,引入一个新的评价指标——理想功率特性系数KN,并推导出求值公式,用来综合考察车用活塞式内燃机的动力储备性能。

The bench tests and road traction and thermodynamic performance tests in kunming plateau of DFH\-\{21\} locomotives equipped with 12V180ZJ diesel engines with high pressure ratio JZH248 turbochargers developed by Sichuan Jiangjin Turbocharger Works instead of 45GP804A were stated.The test results are increased Locomotive power reserve,reliability and speed,decreased engine cylinder exhaust temperature and specific fuel consumption and prolonged overhaul life for important easily worn parts,namely achieved...

The bench tests and road traction and thermodynamic performance tests in kunming plateau of DFH\-\{21\} locomotives equipped with 12V180ZJ diesel engines with high pressure ratio JZH248 turbochargers developed by Sichuan Jiangjin Turbocharger Works instead of 45GP804A were stated.The test results are increased Locomotive power reserve,reliability and speed,decreased engine cylinder exhaust temperature and specific fuel consumption and prolonged overhaul life for important easily worn parts,namely achieved great economic and social benefits.

介绍了四川江津增压器厂研制的高压比JZH248 型涡轮增压器取代45GP804A 型增压器,与东方红〈21〉型机车用12V180ZJ型柴油机匹配,在昆明高原的台架试验及线路牵引热工性能试验情况。结果表明:采用高压比JZH248 型涡轮增压器后,能提高东方红〈21〉型机车的功率储备,降低气缸排气温度和燃油消耗率,提高机车的运行可靠性及运行速度,延长重要易损件的大修期,可产生巨大的节能经济效益和社会效益

 
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