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

查看正确答案

更多“On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.”相关的问题

第1题

[单选题] Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because（）.

A、The direction of pressure on the journal in four-stroke engine is continuously B、positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engine C、four-stroke engines usually utilize a heavier grade of oil than tow-stroke engines D、Low-stroke engines usually consume less lube oil than four-stroke engines

点击查看答案

第2题

[单选题] If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two-stroke/cycle diesel engine will develop approximately（）

A、the same indicated horsepower as a four-stroke/cycle engine B、twice the indicated horsepower as a four-stroke/cycle engine C、one half indicated horsepower as a four-stroke/cycle engine D、one power stroke for every two crankshaft revolutions

点击查看答案

第3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

点击查看答案

第4题

[单选题] If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be（）

A、on the power stroke B、on the exhaust stroke C、at the end of the power stroke D、at the start of the intake stroke

点击查看答案

第5题

[单选题] Which of the following statements is true regarding the installation of piston rings on two-stroke/cycle, diesel engines as compared to four-stroke/cycle, diesel engines?（）

A、In a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greater B、Some provision must be made in a two-stroke/cycle engine to keep the rings from binding in the ports C、No gap is required to exist between the ends of the ring when cold in a two-stroke/cycle engine, but a small gap is required in a four-stoke/cycle engine D、The gaps should be staggered on either side of a piston in a two-stroke/cycle engine, while staggering is not necessary in a four-stroke/cycle engine

点击查看答案

第6题

[单选题] Typical marine propulsion plants include（） directly coupled to the vessel’s single large-diameter, fixed-pitch propeller.

A、a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine B、a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine C、two medium-speed, turbocharged, four-stroke diesel engines D、a variable-speed AC generator