[问答题]Governing prime movers, particularly diesel engines, require careful consideration. The cyclic variations of a diesel cycle can be passed into the governor drive if it is too "stiff". That is, the cyclic vibrations will be imposed on the internal gearing etc. inside the governor housing. To prevent this, some form of damper should be used on the drive into the governor. The mounting point for the governor should be rigid; a vibration mounting would soon downgrade even the best of governors. Chain or belt drives should be avoided as far as possible, as slapping of the belt or chain produces speed variations causing malfunction of the governor. Similarly the drive from the end of the camshaft is subject to torsional vibrations, and governors should not be located at that point. They should be located as close as practicable to the fuel pumps, thereby limiting the mass/inertia of operating linkage. In all cases, the governor should be matched to the engine requirements in terms of droop, load limiting, response time etc. On large engines there is an inertial resistance to acceleration within the masses of reciprocating and rotating elements of the engine, so that during acceleration fuel could be released to the cylinders at a faster rate than efficient combustion can burn it. In an attempt to compensate for this, and to maintain acceptable combustion during acceleration, a tapping from the scavenge space may be taken and the pressure used to regulate the rate of fuel released to the engine. This process is incorporated into the governor operating system so that the governor releases a quantity of fuel commensurate with the increase in air pressure in the scavenge space. (during deceleration the problem is not so great, as excess air can be tolerated far more easily than can the incomplete combustion associated with insufficient air.) (The following questions are based on the passage above)
[单选题]Here some oil in the oily water separator, as a result of its lower _____, will be separated and rise into the oil collection space.
[单选题]Control provisions also allow Contracting Governments to inspect ships of other Contracting States if there are clear grounds for believing that the ship and its equipment do not substantially comply with the requirements of the Convention-this procedure is known as ______.
[单选题]Which of the following problems may occur if the clearance between a piston and cylinder liner is insufficient?
[单选题]When there is no movement of the rams on an electro-hydraulic steering gear, the tilting box of the running pump is _______.
[单选题]Because the electronic governor controller is a sensitive piece of electronic equipment and should not be mounted on the engine or in areas where it will be exposed to ①vibration ②humidity ③high temperature ④oxygen
[单选题]The( )are used to control the flow rate by changing the orifice flow area (hydraulic resistance).
[单选题]As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?