2012年现代名驭ef2.0dohc原厂维修手册自动变速器系统

1、2012 G 2.0 DOHC 自动变速器系统DESCRIPTION OF ELEMENTSCLHESThe gear changing mechanism utilizes three multi-disc clhes. The retainers of these clhes are fabricated from high-precisheet metal for lightness and ease ofproduction. Also, more responsive gear shifts at high engine speeds are achieved by a prere-

2、balanced piston mechanismt cancels oentrifugal hydraulicprere. This mechanism replathe conventionalball check valve.Underdrive clThe underdrive clhh operates in 1st, 2nd, and 3rd gears and transmits driving force from the input shaft to the underdrive sun gear.The components comprising the underdriv

3、e clh are as illustrated on the below.Hydraulic prere actshston prere chamber (betn thston and retainer) and thus pushes thston.urn, thston depresses the clh discs andthereby transmits driving force from the retainer tothe hub side.At high speeds, fluid remaininghston prere chamber ibjected to centr

4、ifugal force and attempts to push thston.However, fluidhe balance fluid chamber (the space betn thston and return spring retainer) is also subjected to centrifugal force.Thus, the hydraulic prere on one side of thston cancels out the hydraulic prere on the other side, and thston does not move.Revers

5、e clh and overdrive clhThe reverse clh operates when the reverse gear iected and transmits driving force from the input shaft to the reverse sun gear.The overdrive clh operates in 3rd and 4th gears and transmits driving force from the input shaft to the overdrive planetary carrier and low-reverseann

6、ulus gear.BRAKESThe gear changing mechanism utilizes two multi-disc brakes.Low-reverse brake and second brakeThe low-reverse brake operates in 1st and reverse gears, when the vehicle is parked, and during manual operation. It locks the low-reverse annulus gear and overdrive planetary carrier to the

7、case.The second brake operates in 2nd and 4th gears and locks the reverse sun gear to the case.The components comprising the low-reverse brake and second brake are as illustrated on the below.As shown, the discs and plates of the two brakes are arranged on either side of the rear cushion plate, whic

8、h is itself secured to the case by a snapring.ER TRAIN汽修一家h淘宝：Planetary Gear SetsThe planetary gear sets have two planetary gears each.The carrier of one gear set is connected mechanically to the annulus gear of the other.This arrangement allows the gear ratio to be varied by connecting or locking t

9、he carriers and sun gears.Transfer Drive GearWith the transfer drive gear, increased tooth height and a higher contact ratio have reduced gear noise.Also, the bearingt supports the drive gear is a pre-loaded typeiminates rattle, and the rigidity of the gear mounting has been increasedby bolting the

10、bearingdirectly onto the case.Output Shaft / Transfer Drive GearAs shownhe illustration on the below, the transfer driven gear is press-fitted onto the output shaft, and the output shaft is secured bya locknut and supported by bearings.The locknus a lefnded thread, and a hexagonal holehe other end o

11、f the shaft enables the shaft to be held inition for locknut removal.MANUAL CONTROL SYSTEMManual Control LeverThe manual control lever is fitted to the top of the valve body and is linked to the parking roller rod and manual control valv A detent mechanism is provided to improve the gear shift feeli

12、ng during manual selection.Parking Mechanismn.When the manual control lever is moved to the parkingition, the parking roller rod moves along the parking roller support and pushes up theparking sprag.As a result, the parking sprag meshes with the transfer driven gear (parking gear), thereby locking the output shaft. To minimize the operatingforce required, a roller isfitted toof the rod.汽修一家h淘宝： 汽修一家 h本资料来自淘宝的目标：每天进步一点点；大家一起