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If the piston groove drain holes for the oil control rings b

题目
单选题
If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?（）
A

The oil control rings will seal improperly and wear rapidly

B

The piston will overheat due to insufficient lubrication

C

Excessive oil will remain on the cylinder wall

D

Light brown smoke will emanate from the engine exhaust

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相似问题和答案

第1题：

Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .

A.an insufficient speed droop setting

B.an overloaded engine

C.clogged drain holes in the oil control rings

D.complete combustion


正确答案：B

第2题：

单选题
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（）.
A

prevent any lubricant from reaching

B

prevent excessive lubrication from reaching the combustion space

C

Provide metal-to-metal contact to seal the cylinder against blow-by

D

assure a positive means of scraping carbon accumulation from the cylinder


正确答案： C
解析： 暂无解析

第3题：

Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?

A.Control the amount of lube oil burned in the combustion chamber

B.Transmit heat from the piston to the cylinder liner

C.Prevent damage to ring groove inserts by acting as a heat dam

D.Dissipate combustion chamber gas pressure by channeling it through the ring gap


正确答案：B

第4题：

单选题
For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.
A

oil spray

B

oil bath

C

oil control rings

D

drilled passage through the camshaft


正确答案： B
解析： 暂无解析

第5题：

单选题
In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）
A

wide compression rings are used

B

oil rings are located above the piston

C

chromium plating is used on all piston rings

D

oil rings are located near the bottom of the piston skirt


正确答案： C
解析： 暂无解析

第6题：

单选题
The primary purpose of oil control rings on a diesel piston is to（）
A

provide a reservoir for cylinder lubrication

B

pump oil into the combustion space for cylinder cooling

C

prevent excessive lubricating oil consumption

D

allow hydraulic oil film formation on the cylinder


正确答案： A
解析： 暂无解析

第7题：

单选题
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 （）.
A

an oil seal

B

removing heat

C

a gas seal

D

cooling the piston


正确答案： D
解析： 暂无解析

第8题：

If a used lube oil analysis indicates excessive chromate content, this means

A.air filtration is inadequate

B.engine coolant is leaking into the lube oil

C.fuel oil is leaking into the lube oil

D.the piston rings are excessive worn


正确答案：B

第9题：

单选题
A diesel engine piston ring face is in direct contact with the （）.
A

top of the ring groove

B

cylinder liner oil film

C

bottom of the ring groove

D

back of the ring groove


正确答案： B
解析： 暂无解析

第10题：

单选题
Black areas on the sealing surfaces of piston rings indicate（）
A

lube oil pumping

B

rotating rings

C

gas pressure behind the ring

D

passage of hot gases


正确答案： D
解析： 暂无解析

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