All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.
A
举一反三
- The film of oil between the rings and the liner is not only essential for the lubrication but also （） achieving a gas seal.
- The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.
- Block group contains______. A: connecting rods,crankshaft and flywheel B: pistons,connecting rods and oil pan C: cylinder block,cylinder head and oil pan D: piston rings,gasket and connecting rods
- Which statement about the Lubrication oil is fault? A: The oil absorbs and carries the heat away from the engine components. B: The oil forms a good seal between piston rings and cylinder walls. C: The oil forms a film on the metal surface and prevents a metal to metal contact. D: The oil washes off dirt away from the engine parts through its chemistry.
- Before replacing a piston you should check the rings to see that all clearances and gaps are （） the permissible tolerances.
内容
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Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible （）.
- 1
The piston rings are manufactured with a diameter （） the bore of the cylinder.
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These piston rings are so badly worn that they must be （）.
- 3
Piston cooling fins are located ______. A: at top the piston crown B: beneath the piston crown C: at the base of the piston skirt D: inside the cylinder liner<br/>cooling water jacket
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In the rings event, gymnasts are lifted up to reach four rings.