更多"In addition to lubricating, cylinde"的相关试题:
[单项选择]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.
A. the power stroke
B. the compression stroke
C. low load operation only
D. periods of standby
[单项选择]The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）
A. the same, whether at sea, or during maneuvering
B. adjusted during each hour of operation while at constant RPM
C. higher at sea than while maneuvering
D. lower at sea than while maneuvering
[单项选择]The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
A. the upward stroke
B. the downward stroke
C. the power stroke
D. the suction stroke
[单项选择]Cylinder oil is a high viscosity mineral oil, with a （） machined to the anticipated sulfur content of the fuel.
A. TAN
B. TBN
C. SAN
D. SBN
[单项选择]The cylinder oil will have to neutralize the acidic products of combustion and have good （） properties to keep the metal surfaces clean.
A. detergent
B. de-oiling
C. defrosting
D. demulsifying
[单项选择]In the sentence “In some designs the cylinder oil is timed so that the oil injects only on the piston ring belt, the "piston ring belt" means （）.
A. piston crown
B. piston ring groove
C. piston skirt
D. piston ring area
[单项选择]In some designs the cylinder oil is timed so that the oil injects only on the （）.
A. piston crown
B. piston groove
C. piston skirt
D. piston ring belt
[单项选择]Cylinder wall temperature, fuel oil supplier, and oil passage （）.
A. are interdependent
B. are not interdependent
C. have nothing to do with each other
D. are independent
[单项选择]One of function of diesel engine lubricating oil is to （）
A. induce carbon formation on cylinder walls
B. improve fuel penetration in the combustion space
C. form a friction reducing film between mating surfaces
D. lubricate the fuel injection
[单项选择]Fuel oil discharged to the diesel engine cylinder is atomized at the （）
A. turbocharger
B. injection nozzle tip
C. carburetor
D. fuel oil pump
[单项选择]As its temperature rises, the volume of fuel oil in the tanks will （）.
A. remain the same
B. increase
C. decrease
D. none of the above
[单项选择]The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known as （）.
A. mechanical lubricator
B. lubrication function
C. forced feed system
D. bearing lubrication
[单项选择]The quantity of oil injected into the cylinder can be regulated （）.
A. by turning the pump plunger
B. by vary the fuel valve spring force
C. by no means by controlling the governor
D. by enlarging or diminishing the injection hole
[单项选择]Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）
A. electronic ignition system
B. compression of air by the piston
C. friction in the fuel injector
D. fuel oil bearing system
[单项选择]Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）
A. increase engine power
B. increase engine load
C. decrease engine power
D. improve fuel economy
[单项选择]Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.
A. intake stroke
B. exhaust stroke
C. power stroke
D. compression stroke
[单项选择]In order to keep the oil film on the cylinder liner during the running-in period, the piston rings are slightly rounded（）
A. on both the external and internal top edges
B. on both the external top and bottom edges
C. on both the external and internal bottom edges
D. on all the four edges
[单项选择]Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.
A. the cylinder cover
B. the piston rings
C. the piston crown
D. the piston skirt
[单项选择]If the detergent type lubricating oil being used in a diesel engine is black, the oil （）
A. must be centrifuged
B. must by filtered
C. must be changed
D. is holding finely dispersed carbon in suspension
