Accumulator
Accumulator
相关考题：
A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust theA.pilot valve openingB.compensating needle valveC.compensating spring tensionD.accumulator spring tension
Before performing any maintenance on a hydraulic system storing energy in an accumulator, you shouldA.pressurize the system to test for leaksB.bleed off all pressure within the systemC.operate the machine until it reaches normal temperatureD.disconnect the pump pressure control switch
One function provided by a hydraulic accumulator is to ___.A.provide an area where air can separate from the oilB.provide an area to separate solid contaminants from the oilC.act as an oil and water separatorD.absorb shocks occurring in the system
材料：A typical example of a hydraulic governor is the Woodward. This has adjustable droop for parallel operation and it is fitted with a speed-adjusting control . If required it can be fitted with a synchronizing motor to provide remote control from a switchboard.A gear pump driven from the engine supplies oil under pressure to accumulator pistons under which is a by-pass to regulate maximum pressure. One branch supplies oil which acts on top of the power piston, the pressure always tending to turn the terminal shaft to shut off fuel, while the other branch supplies oil to the pilot valve which is operated by the linkage from the fly weights above.Should the speed of the engine decrease due to increased load the flyweights will move towards their center of rotation and lower the position of the pilot valve plunger, admitting oil pressure from the bottom of the power piston. Since, however, the area on the bottom is much greater than the top the net resultant force causes the piston to move upwards. This operates the power lever turning the terminal shaft which varies the cut-off point in the fuel pump through linkage, but as the power piston moves up, the actuating compensating piston moves down.Oil under this piston is now forced through the needle valve to the receiving compensating piston, raising the outer end of the floating lever and the pilot valve plunger until it has returned to its normal position. This stops further movement of the terminal shaft so that the fuel control is now set in a position corresponding to the increased fuel required to run the engine at normal speed under the increased load.问题：This passage is mainly about ___.A.what type of governor should be provided when the engine is used for electric power generationB.why the speed of the engine fluctuatesC.how the governor worksD.how the fuel pumps workThe oil from the gear pump will ___. ① be supplied to the accumulator ② act on the power piston ③ be supplied to the pilot valveA.①B.①②C.②③D.①②③Which of the following is true about the Woodward discussed?A.It is a kind of mechanical governor.B.It can not be used for parallel operation.C.It has speed droop.D.It may only be manually controlled from a switch boarE.When the speed of the engine decreases due to increased load, which of the following will NOT happen?A.The flyweights move towards their centerB.The pilot valve plunger moves towards its normal positionC.The power piston moves downwards until it returns to its normal positionD.The terminal shaft moves to a new position请帮忙给出每个问题的正确答案和分析，谢谢！
What is the function of an air receiver in the compressed air system on a ship?A.Condenses moistureB.Provides overpressure protectionC.Purifies the airD.Acts as an accumulator
A hydraulic accumulator aboard a ship is designed to ______.A.store fluid under pressureB.act as a fluid reservoirC.provide overpressure reliefD.replenish fluid to a system
以下哪项根据发动机的转速的变化而改变输出油压实现自动换挡？（）A、调制阀（MODULATOR）B、手动阔（MANUAL）C、蓄压阀（ACCUMULATOR）D、伺服阀（SERVO）E、节气门阀（THROTTLE.F、调速阀（GOVERNER）
以下哪项根据车速的变化而调整输出油压实现自动换档？（）A、调制阀（MODULATOR）B、手动阀（MANUAL）C、蓄压阀（ACCUMULATOR）D、伺服阀（SERVO）E、节气门阀（THROTTLE.F、调速阀（GOVERNER）
单选题What is the function of an air receiver in the compressed air system on a ship? （）ACondenses moistureBProvides overpressure protectionCPurifies the airDActs as an accumulator
单选题One function provided by a hydraulic accumulator is to（）Aprovide an area where air can separate from the oilBprovide an area to separate solid contaminants from the oilCact as an oil and water separatorDabsorb shocks occurring in the system
单选题A hydraulic accumulator aboard a ship is designed to（）.Astore fluid under pressureBact as a fluid reservoirCprovide overpressure reliefDreplenish fluid to a system
单选题A hydraulic accumulator is designed to（）.Astore fluid under pressureBact as a fluid reservoirCprovide overpressure reliefDreplenish fluid to a system
单选题An air compressor can be unloaded at start-up by （）.Aholding the discharge valve openBrelieving the intercooler pressure to the atmosphereCusing an enlarged, permanently opened clearance expansion spaceDa pre-charged accumulator