The function of the piston compression rings used in a diesel engine is to ()
相似题目
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The lower section of a piston is called the ().
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If the back clearance of a piston ring is excessive,()
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While engine is in operation the piston moves up and down, thus causing the rotation of the ().
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Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?()
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The lower end of each piston rod is reduced in diameter to fit a bore in the (), this being secured to the piston rod by a nut.
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The delivery rate of an axial-piston hydraulic pump is controlled by varying the position of the ().
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The piston rings are manufactured with a diameter () the bore of the cylinder.
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To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also().
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The main purpose of the piston oil scraper rings is to ().
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Cold clearances between the skirt of an aluminum piston and the cylinder liner is about ()
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(Piston area)X(Piston stroke)K(numbers of the cylinders)=engine()
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The outside diameter of the pipe is () the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.
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The scavenging air ports are located at () that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
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The sealing function of the piston ring is brought about by the gas pressure above and behind the piston ring, which forces it () against the bottom of the ring groove, and () against the cylinder wall.
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The upper section of a piston is called the ()
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Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?()
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The main function of piston compression rings is to ()
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The position of the piston parts in relation to each other is secured by means of () and a dowel pin in the crown.
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The lower end of each piston rod is reduced in diameter to fit a bore in the cross-head, this being secured to the piston rod by ().
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During working, when the piston is near the (), the air ignites the fine spray of fuel.
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Among the rings of a piston the () one is subjected to the greatest load and temperature.
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The lowest ring of a piston is ().
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The perception of color is a function of the (0.5分)
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On engines having oil cooled pistons the lubricating oil pre-heater must be put into operation and the rate of heating so ______ that the temperature of the piston cooling oil returns are 32 to 35℃ over a period of at least two hours.