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船东英语口语面试 Part 5

发布时间:2015-03-23 来源:乐虎国际平台app下载 打印 作者:肖浩 字号:

        1.How do you manage sewage?

        如何管理生活污水?

        Drop in sterilized medicine regularly. Keep the blower in constant working. Check the quality of the sample of the constant to compare with the standards.

        定期投药。保持鼓风机连续工作。检查取样的质量并与标准的相比较。

 

        2.Have you ever performed the auxiliary engine to combust heavy oil? What should be borne in mind when transferring oil from heavy oil to light oil?

        您做过烧重油的副机吗?在重油换轻油过程中应注意什么?

        I have worked on the auxiliary engine which combusts a combination of A and C oil. When transferring oil from heavy oil to light oil, the changing of temperature should not be rapid. 1*C to 2*C per minute is best. Meanwhile the viscosity change should be constantly observed. The temperature of the oil temperature to be heated varies in quality of the fuel oil. In general, 180cst needs to be heated to 95-105*C; 380cst needs to be heated to 130-135*C. the viscosity is under the control of approximately 2 anglers.

        我做过烧A类和C类油的副机。在重油换轻油过程中,温度的变化不要太快。最好每分钟1到2度。同时应该持续地观测粘度的变化因为不同品质的燃油所须加热的温度是不同的。通常,180粘度等级燃油要加热到95-105度;380粘度等级的燃油须加热到130-135度。

 

        3.Could you tell the main reason for seeing the black smoke exhausted from the diesel engine?

        请您说出柴油机冒黑烟的原因?

        The possible reasons are as follows; discharge valve damage or over load operation of diesel engine, or leakage of nozzle, or the incomplete combustion in the cylinder because not enough fresh air was pumped.

        可能的原因如下;排气阀损坏或柴油机超负荷运转,或油嘴漏泄,或由于进气量不足导致燃烧不完全,等等。

 

        4.Could you tell the main reason for scavenge fire?

        请您说出柴油机扫气箱着火的原因?

        Ignition of carbon/oil deposits by;A. Prolonged blow-by.B. Slow combustion in cylinder, owing to incorrect atomization, or misaligned fuel jets.C. Blow-back through the scavenge air ports, owing to an incorrectly adjusted exhaust cam disc or large resistance in the exhaust system(back pressure not exceed 300 mm wc)D. The cylinder liner wear out of order or piston ring broken.

        由于如下的原因,油/碳燃烧物沉积而导致扫气箱着火;A. 长时间的活塞环漏气。B. 由于不正常的雾化,或燃油喷射的不对中而引起燃烧的缓慢。C. 由于排汽凸轮盘不正确的定时或排汽系统背压过大(背压不能超过300毫米水柱)而导致燃气通过扫气口倒流。D. 气缸套磨损超标或活塞环断裂。

 

        5.Could you tell the main reason for crankcase explosion?

        请您说出柴油机曲拐箱爆炸的原因?

        Oil mist and hot spot; abnormal friction between sliding surfaces causing a hot spot. Hot spot can cause the oil falling on them to evaporate. When oil vapour condenses again, countless minute particle are formed, which are suspended in the air. A milky white mist develops, which is able to feed and propagate a flame if ignition occurs. The ignition can be caused by the same hot spot which caused the oil mist to form. The ignition will cause a tremendous rise of pressure in the crankcase, which will open the crankcase relief v/v momentarily. A very severe explosion can damage the crankcase door and cause fire in the engine room. Similar explosions can occur in the chain casing & scavenge air box.

        油雾和热源;滑动表面之间不正常的摩擦引起的热点。热点能导致油飘落在他们上面而蒸发。当油气再次冷凝时,会形成无以计数的悬浮在空气中的颗粒。乳白色的油雾不断形成和繁殖一旦遇到热点会形成火焰。造成油雾形成的热点可以引起燃烧。燃烧会引起曲拐箱内压力急剧升高并即可爆开曲拐箱安全阀。非常剧烈的爆炸会损坏曲拐箱道门并引起机仓着火。类似的爆炸也会发生在链条箱内及扫气箱内。

 

        6.What does the turbine super-charger surge?

        增压器喘振的原因是什么?

        There are basically five main reasons.High backpressure of the exhaust manifold and low flowing quantity; rapid change in load; insufficient supply of fuel oil or bad combustibility; failure of turbine blade, nozzle and diffuser; narrowed scavenging of air passage or scavenge fire;

        主要有五个原因。排汽总管高背压和低流量;负荷快速的变化;不充足的燃油供应或燃烧不良;透平叶片/喷嘴环和扩散器故障;扫气通道变窄或扫气箱着火。

 

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