《汽车发动机构造（双语课程）》习题-项目五 任务二 机油泵检修（无答案）

项目五任务二机油泵检修Item5Task2Oilpumpoverhaul一.判断题（对“√”，错“×”）（6题）Ⅰ.Trueorfalsequestions（True“√”,false“×”）（6questions）1.转子式机油泵主要由壳体、内转子、外转子、限压阀等组成。（）1.Rotortypeoilpumpismainlycomposedofshell,innerrotor,outerrotor,pressurelimitingvalve,etc.()2.机油泵的功用是保证机油在润滑系统内循环流动，并在发动机任何转速下都能以足够高的压力向润滑部位输送足够数量的机油。（）2.Thefunctionoftheoilpumpistoensurethecirculationofengineoilinthelubricationsystemandtodeliverasufficientamountofengineoilatahighenoughpressuretothelubricationpartatanyspeedoftheengine.()3.为既保证各润滑部位的润滑要求，又减少机油泵的功率消耗，机油泵实际供油量一般应与润滑系需要的循环油量相等。（）3.Inordertoensurethelubricationrequirementsofeachlubricationpartandreducethepowerconsumptionoftheoilpump,theactualoilsupplyoftheoilpumpshouldgenerallybeequaltotheamountofcirculatingoilrequiredbythelubricationsystem.()4.转子式机油泵的外转子带动内转子转动，且转速快于内转子。（）4.Theouterrotoroftherotortypeoilpumpdrivestheinnerrotortorotate,andthespeedisfasterthantheinnerrotor.()5.转子式机油泵的端面间隙、啮合间隙以及外转子与泵壳之间间隙的增大，各处密封性和限压阀的调整都将影响泵油量和泵油压力。（）5.Theincreaseoftheendclearance,meshingclearanceandthegapbetweentheouterrotorandthepumpcasingoftherotoroilpump,thesealingandtheadjustmentofthepressurelimitingvalvewillaffectthepumpoilvolumeandpumpoilpressure.()6.压力润滑是通过机油泵使机油产生一定的压力来润滑零件摩擦表面的润滑方式。（）6.Pressurelubricationisthelubricationmethodoflubricationonthefrictionsurfaceofpartsbyoilpump.二.单选题（5题）Ⅱ.Multiplechoicequestions(Selectonlyoneanswerchoice)（5questions）1.汽车上常用的机油泵型式是（）。1.Thetypeofoilpumpcommonlyusedinautomobilesis().A.齿轮式B.转子式C.离心式D.惯性式A.GeartypeB.RotortypeC.CentrifugaltypeD.Inertiatype2.机油滤清器阻塞时，其旁通阀打开，机油直接流向（）。2.Whentheoilfilterisblocked,theby-passvalveisopenedandtheengineoilflowsdirectlyto(C).A.机油泵B.油底壳C.主油道D.气缸壁A.oilpumpB.oilpanC.mainoilpassageD.cylinderwall3.正常工作的发动机，其机油泵的限压阀应该是（）。3.Foranormalworkingengine,thepressurelimitingvalveoftheoilpumpshouldbe（）.A.经常处于关闭状态A.oftenintheclosedstateB.热机时开，冷机时关B.turnedonwhentheengineishotandturnedoffwhentheengineiscoldC.经常处于溢流状态C.oftenintheoverflowstateD.热机时关，冷机时开D.turnedoffwhentheengineishotandturnedonwhentheengineiscold4.机油细滤器上设置低压限制阀的作用是（）。4.Thefunctionofthelowpressurelimitingvalvesetontheengineoilfinefilteris().A.机油泵出油压力高于一定值时，关闭通往细滤器油道A.Whentheoilpumpoutletpressureishigherthanacertainvalue,closetheoilpassagetothefinefilter.B.机油泵出油压力低于一定值时，关闭通往细滤器油道B.Whentheoilpumpoutletpressureislowerthanacertainvalue,closetheoilpassagetothefinefilter.C.使进入机油细滤器的机油保证较高压力C.EnsurehighpressureoftheoilenteringtheoilfinefilterD.使进入机油细滤器的机油保持较低压力D.Keeptheoilenteringtheoilfinefilteratalowerpressure5.转子式机油泵工作时，（）。5.Whentherotaryoilpumpisworking,（）A.外转子转速低于内转子转速A.theouterrotorspeedislowerthantheinnerrotorspeed.B.外转子转速高于内转子转速A.theouterrotorspeedishighert