For one or two types of engine， the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through the （）.
C
举一反三
- At bottom dead center, the centerline of the connecting rod usually coincides with the（） A: angularity of the piston motion B: inertia moment from the piston C: centerline of the cylinder D: centerline of the king pi
- Engine block group includes ______, crankcase, cylinder head, cylinder gasket. A: cylinder block B: proprietor C: disciple D: barbarian
- We can use two ways to circulate oil through An engine:pressure and splash.
- 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.
- In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（） A: lubricating oil B: dry sump C: circulated tank D: wet sum
内容
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The heart of the diesel engine is the （） where the fuel is burnt and the power developed. A: crankcase B: cylinder C: scavenge box D: pisto
- 1
In a four-stroke engine, the cycle of events is completed in four<br/>strokes of(()) A: the cylinder B: the crankshaft C: the piston D: the crosshead
- 2
For any piston ring to operate smoothly without scuffing, the ring must be_______. A: of a material harder than the cylinder line B: properly lubricated C: prevented from compressing D: prevented from rotating during engine operation
- 3
In four strokes engine, the cycle of events is completed in four<br/>strokes of (). A: the cylinder B: the crankshaft C: the piston D: the cross-head
- 4
The piston is fitted with _____piston rings. A: four B: three C: two D: one