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单选题On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.A thrust blockB sounding rodC connecting rodD push rod

题目
单选题
On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.
A

thrust block

B

sounding rod

C

connecting rod

D

push rod

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相似问题和答案

第1题：

单选题
In a four-stroke/cycle diesel engine, after the completion of the power stroke, the piston will move（）
A

up and draw in a fresh air charge

B

down to burn off fuel

C

down to compress the fuel air charge

D

up and force out the exhaust gases


正确答案： D
解析： 暂无解析

第2题：

单选题
Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A

starting the engine while hot

B

knurling the piston skirt

C

operating the engine overheated

D

scuff resistant piston rings


正确答案： D
解析： 暂无解析

第3题：

In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring groove

A.①

B.②

C.①②

D.neither ① nor ②


正确答案：C

第4题：

单选题
When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of （）
A

insufficient lubrication

B

improper piston cooling

C

blow-by

D

overload operation


正确答案： B
解析： 暂无解析

第5题：

单选题
When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）
A

intake stroke

B

compression stroke

C

power stroke

D

exhaust stroke


正确答案： A
解析： 暂无解析

第6题：

单选题
In some diesel engine designs,（）the injection of cylinder oil is timed to impinge when the piston and only impinge on（）
A

is coming upward；cylinder ring belt

B

is going downward；piston ring belt

C

is coming upward；piston ring belt

D

is going downward；cylinder ring belt


正确答案： D
解析： 暂无解析

第7题：

单选题
In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove
A

Ⅰ only

B

Ⅱ only

C

both Ⅰ and Ⅱ

D

neither Ⅰ nor Ⅱ


正确答案： D
解析： 暂无解析

第8题：

单选题
In a single acting, four-stroke/cycle diesel engine, the power impulse in an individual cylinder occurs （）
A

once every crankshaft revolution

B

once every two crankshaft revolutions

C

once every piston stroke

D

twice every piston stroke


正确答案： D
解析： 暂无解析

第9题：

单选题
Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A

chromium plating piston rings

B

knurling the piston skirt

C

extended maximum power operation

D

applying load to a cold diesel engine


正确答案： D
解析： 暂无解析

第10题：

单选题
The size of the exhaust valve opening is （）
A

most critical in a four-stroke cycle diesel engine

B

most critical in a two-stroke/cycle diesel engine

C

most critical in a four-stroke/cycle diesel engine if it is turbocharged

D

of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine


正确答案： A
解析： 暂无解析

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