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1、题目汽车分动器外文翻译学生：指导教师：学院：职业技术教育学院专业班级： 交通运输（汽车电子检测与维修）2009级2班brief in troduct ionActuator is a gear tan smissi on system, the in put shaft directly or through the sec ond shaft, the tra nsmissi on device and the tan smissi on output shaft, has several, respectively, by the uniiversal transmission devic
2、e and the driving bridge.When the actuator hang into the low gear, the output torque is large.To avoid a rear axle overload axle must participate in the drive, to share part of the load.The motion control mechanism must guarantee: non first connected to the front axle, shall hang into the low gear;
3、not to withdraw from the low-profile, do not take off the front axle.A drive car, when all wheel drive driving on uneven road surface or curve, or the front and rear driving wheels with tyre wear and running con diti ons of differe nt radii, will cause the wear of engine power con sumpti on, tire or
4、 tra nsmissi on system parts .In order to overcome this shortcom ing, the torque roughly accord ing to the axle load proporti on to the drive axle, some power divider is arra nged with differe ntial lock asymmetric planetary gear shaft of the speed difference between the SUV will often run in no roa
5、ds and bad situations, especially military vehicle con diti on is worse, this it should in crease the n umber of vehicle wheel, therefore, off-road vehicle use multi-axis drive.For example, if a fron t-wheel drive vehicle two wheel will both fall into the ditch (in this case, the bad roads ofte n en
6、coun tered), the car will not be the engine driv ing force through the fricti on wheel and the gro und and con ti nue to move forward.A nd if the four wheels of the car can have a drivi ng force, the n, there are two have n ot falle n into the ditch the wheel can work no rmally, the car continued to
7、 travel .In order to in crease the tran smissi on coefficie nt of maximum tra nsmissi on ratio and file n umber, at prese nt most of the cars are fitted with two gear actuator, which also plays the auxiliary tra nsmissi on fun cti on.The first automatic transmission is a Benz Corp in 1914 launched t
8、he first, Chrysler 1914 launched with hydraulic coupling four speed semi-automatic gearbox.Automatic actuator includes four basic systems of typical: torque converter, planet gear mechanism, hydraulic system and actuatorFun cti onIn the multiple spindle actuation automobile, in order to power output
9、 to the drive axle is provided with a power divider.Actuator usually with high and low, in order to further expand the number of transmission ratio and gear driving in the difficult area of.Sub-actuator fun cti on is the allocatio n of power tra nsmissi on output to the drive axle, and further in cr
10、ease the torque.Actuator is a gear tra nsmissi on system, which separately fixed on the vehicle chassis, the in put shaft and the output of the tra nsmissi on shaft gear conn ected with uni versal join ts, sub-actuator output shaft has a plurality of, respectively, via the uni versal tran smissi on
11、device conn ected the driv ing axle Most actuator due to play dow n the role of in creas ing mome nt rather tha n tra nsmissi on of the load, so the dyn amic con sta nt mesh gear in the helical gears, bearings and the bearing tapered roller bearing2, with inter axle differential actuatorDyn amic zon
12、ing in ter-axle differe ntial unit in front, after the output has a pin io n in ter-axle differe ntial shaft and betwee n.It overcomes the shortcomings mentioned above, the two output shafts can be a different rotation speed, and the driving axle torque distribution to the former, in certa in propor
13、ti on, can make the front axle is ofte n drive n state, and can en sure the wheel motor coordi nati on, so no additi onal device is connected from the front axle drivePri ncipleActuator for each axis with two tapered roller beari ng, the beari ng tight ness with the corresp onding adjustme nt pad.Of
14、f-road vehicle in good road, in order to reduce the power consumption and transmission parts and tyre wear, to cut off the front axle power.When driving off-road, for low power, to prevent the rear bridge and the bridge overload, should make the low power to share by all driving axles.Therefore, the
15、 dyn amic con trol mecha nism has the follow ing requireme nts: not the first conn ected to the front axle not to hang up to speed, not to withdraw from the low speed, do not take off the front axleComm on faultNeutral hair.The cran kshaft and the first axis misalig nment;Second shaft bearing wear,
16、oil, pilling;Con sta nt mesh gear problem (wear un iform sound or in dividual tooth chipped regular gap impact soun d);Con sta nt mesh gear repair un paired replaceme nt, meshi ng;The first bearing damage, or old gear change gear.Gear ringGear change improper; differential gear or half axle gear keyway worn loose;The main, driven bevel gear clearance is too large; the driven bevel gear loose.FeverBearing too tight and / or gear g
