轮机英语船舶动力装置章节练习(2018.02.09)

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1 An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.

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2 A single piece（） fitted with bronze rings guides the piston in the cylinder liner.

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3 The quantity of oil injected into the cylinder can be regulated （）.

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4 The bed-plate is secured in the longitudinal direction by means of bolts known as （）.

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5 Smaller engines can be made more rigid than large ones and may not have （）.

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6 Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.

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7 Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.

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8 The gudgeon pin is carried in （） in the piston skirt.

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9 （） may be the first possible cause which makes the engine to lose power or slow down when it is running.

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10

A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）
(1) MEP is lower and the scavenging air is cooling the exhaust gases
(2) valve overlap in a four-stroke

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