Fourline asked in 社會與文化語言 · 1 decade ago


Steam engines like this drove trains from the early 1800s to the 1950s.1 Though the engines varied in size and complexity, their fundamental operation remained essentially as illustrated here.

In a steam engine, the boiler (fueled by wood, oil, or coal) continuously boils water in an enclosed chamber creating high-pressure steam.

Steam from the boiler enters the steam chest and is admitted to the front end of the cylinder by the valve slide (illustrated in blue). The high pressure steam presses the piston backward, driving the engine wheels around one half turn.

At the end of the piston stroke the valve shifts, allowing the expended steam to escape through the exhaust port (underneath the blue valve slide). The high pressure steam escapes in a quick burst giving the engine its characteristic choo choo sound.

At the same time, the valve slide begins admitting high pressure steam to the back end of the cylinder. This presses the piston forward, pulling the engine wheels around another half turn.

At the end of the forward stroke, the steam is released from the rear portion of the cylinder (another choo).

The steam engine has a \'dead\' spot at the extreme end of each stroke while the valve is transitioning from power to exhaust. For this reason, most engines had a cylinder on each side of the engine, arranged 90 degrees out of phase, so the engine could start from any position. This illustration only shows one side of the engine.

Though not a scale represenation of any particular engine, these illustrations draw heavily from the many excellent illustrations in Modern Locomotive Construction

2 Answers

  • 1 decade ago
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    蒸氣的像這引擎駕駛從 1800 年代早期到 1950 年代的火車。雖然引擎在大小方面改變和複雜,他們的基本手術本質上保持了當做列舉的在這裡。

    在一個蒸氣的引擎中,煮沸 (藉著木材,油或煤推動)不斷地,煮沸在創造高壓的蒸氣的一間被附上的會議室中澆水。


    在活塞的最邊邊划尾槳活瓣變化,讓被花費的蒸氣經過排氣港口逃脫. (在下面藍色的活瓣幻燈片)高的壓力蒸發給引擎它的特性 choo choo 聲音的快的破裂的逃亡。


    在向前的筆劃結束的時候,蒸氣從圓筒 (另外 choo)的後面部分被釋放。

    當活瓣從力量到排氣正在轉變的時候,蒸氣的引擎在每筆劃的極端結束有一個’死’地點。 因為這一個理由,大多數的引擎有了了在引擎的每邊上的一個圓筒,從階段安排了了 90 度,因此,引擎可以從任何的位置開始。 這一個說明只出示引擎的一邊。

    雖然不任何特別的引擎刻度 represenation,這些說明很重地從現代的機動性建築的許多優良的說明拉

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  • 1 decade ago

    蒸氣的像這引擎駕駛從 1800 年代早期到 1950 年代的火車。1 雖然引擎在大小方面改變了和複雜,他們的基本手術本質上保持了當做列舉的在這裡。

    在一個蒸氣的引擎中,煮器 (藉著木材,油或煤推動)不斷地,煮沸在創造高壓的蒸氣的一間被附上的會議室中澆水。

    來自煮器的蒸氣進入蒸氣的胸而且被活瓣幻燈片的圓筒前面結束承認。(舉例在藍色方面) 高的壓力蒸發 presse

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