单选题
发布日期:2021-03-22
336kW
360kW
480kW
567kW
额定功率,是指机械设备所能达到的最大输出功率,机械设备的实际输出功率不会大于额定功率,这一点与电器不同。电器的额定功率是指用电器正常工作时的功率。它的值为用电器的额定电压乘以额定电流。若用电器的实际功率大于额定功率,则用电器可能会损坏;若实际功率小于额定功率,则用电器无法正常运行。在正常运行工作状况下,动力设备的输出功率或消耗能量的设备的输入功率。常以“千瓦”为单位。也指工厂生产的机器在正常工作时所能达到的功率。即平常所说的某机器的功率,机器的额定功率是一定的。
柴油发动机是燃烧柴油来获取能量释放的发动机。它是由德国发明家鲁道夫·狄塞尔(Rudolf Diesel)于1892年发明的,为了纪念这位发明家,柴油就是用他的姓Diesel来表示,而柴油发动机也称为狄塞尔发动机(Diesel engine)。
标签: mtu8v396tc13 柴油机 额定功率
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在Excel2003编辑状态下,当准备接受输入的数据时,状态行显示()
Passage1Many objects in daily use have clearly been influenced by science, but their form and function, their dimensions and appearance, were determined by technologists, artisans, designers, inventors, and engineers-use nonscientific modes of thought. This kind of thinking way is different from science. Many features and qualities of the objects that a technologist thinks about cannot be reduced to unambiguous verbal descriptions; they are dealt with the mind by a visual, nonverbal process. In the development of Western technology, it has been non-verbal thinking, by and large, that has fixed the outlines and filled in the details of our material surroundings. Pyramids, cathedrals, and rockets exist not because of geometry or thermodynamics, but because they were first a picture in the minds of those who built them.The creative shaping process of a technologist's mind can be seen in nearly every artifact thatexists. For example, in designing a diesel engine,a technologist might impress individual ways of nonverbal thinking on the machine by continually using an intuitive sense of rightness and fitness.What would be the shape of the combustion chamber? Where should valves be placed? Should it have a long or short piston? Such questions have a range of answers that are supplied by experience, by physical requirements, by limitations of available space, and not least by a sense of form. Some decisions such as wall thickness and pin diameter, may depend on scientific calculations, but the nonscientific component of design remains primary.Design courses, then, should be an essential element in engineering curriculum. Nonverbal thinking of a central mechanism in engineering design, involves perceptions, the stock-in-trade of the artist, not the scientist. Because perceptive processes are not assumed to entail "hard thinking", nonverbal thought is sometimes seen as a primitive stage in the development of cognitive Process and inferior to verbal or mathematical thought. But it is paradoxical that when the staff of the Historic American Engineering Record wished to have drawings made of machines and isometric views of industrial processes for its historical record of American engineering, the only college students with the requisite abilities were not engineering students, but rather students attending architectural schools.If courses in design, which in a strongly analytical engineering curriculum provide the background required for practical problem-solving, are not provided, we can expect to encounter silly but costly errors occurring in advanced engineering systems. For example, early models of high-speed railroad cars loaded with sophisticated controls were unable to operate in a snowstorm because a fan sucked snow into the electrical system. Absurd random failures that plague automatic control systems are not merely trivial aberrations: they are a reflection of the chaos that results when design is assumed to be primarily a problem in mathematics.What can we conclude from the last paragraph?
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MTU8V396TC13柴油机的额定功率是()。
MTU8V396TC13柴油机的额定功率是()。
装备MTU8V396TC13柴油机的发电车中柴油发电机组额定功率是()。
装备MTU8V396TC13柴油机的发电车中柴油发电机组额定功率是()。
MTU8V396TC13柴油机为()柴油机。
MTU8V396TC13柴油机为()柴油机。
按我国内河钢船建造规范规定,额定功率等于或大于()的主柴油机推进系统和额定功率等于或大于()的柴油机发电机系统应进行轴系扭振计算并送交审查.
柴油机的额定功率是如何规定的?
柴油机的额定功率是如何规定的?
什么是柴油机的额定功率和额定工况?工程机械柴油机在选择额定功率时应注意哪些问题?