DSG (Direct Shift Gearbox) Chinese surface meaning ldquo; direct shift transmission rdquo ;.
origin
DSG on origin such as high-tech, like other cars, the design comes from motorsport, and its practical application as early as Porsche Prosche 962C in the early 1980s and the 1985 Audi Audi the sport quattro S1 RC racing, and who helped them win a number of titles ~! The concept of dual clutch is very advanced, but as new technology there is a problem of poor durability, durability is good or bad also determines the amount of its costs, so that after more than ten years of development, it really is common Street car use.
works
1: FIG, 1 is responsible for a speed clutch, third speed, fifth speed and reverse gear, the clutch 2 is responsible for the second speed, fourth speed, and sixth speed; hang odd gears when the clutch 1 in combination, the work input shaft 1, clutch 2 is disengaged, the input shaft 2 does not work, i.e., during operation of the DSG transmission there are always two stalls are bonded, a working, the other for the next step ready; manual mode downshift can jump: If the initial gear and the final gear belong to the same clutch control will shift by a further clutch control clock, and if the initial gear and the final gear bits do not belong to the same clutch control, it is possible to jump directly reduced to a predetermined gear position.
AMT’s structure is more efficient automatic transmission, while the DSG has a flexible and comfortable in addition to a manual transmission and automatic transmission, it’s better to provide uninterrupted power output, which is totally different from the two automatic clutch control. DSG substantially composed by several major items: 6-speed mechanical gearbox two substantially three axes, a hydraulic clutch mechanism contains two electron Duoban clutch plate, a gearbox ECU. Unlike ordinary biaxially gearbox, the input shaft or a single system, in addition to the DSG double clutch gearbox, but also includes a dual input shaft coaxial system, and the six forward gears are placed on either side a respective driven shaft . The traditional use of a manual transmission clutch, when the shift driver must depress the clutch pedal, so that a different gear to the gear tooth motion, the shift in the power interruption appeared therebetween, so that the output performance has brokenCont.
DSG is thought of as the two functions of the combined manual gearbox, and build a single system. DSG containing two automatic clutch control, driven by electronic and hydraulic control, can simultaneously control two sets of clutch operation. When the transmission operation, a set of gear teeth are engaged, and close to the shift, the next set of gear has been pre-selected gear stage, but still in the disengaged state of the clutch; when a shift gear clutch in use separation, while the other clutch teeth engaged with the gear has been preselected to ensure that during the entire minimum shift a set of gears on the output power, so there is no discontinuity condition occurs.
fit to the above operation, the DSG drive shaft is divided into two, one is placed inside a solid shaft, and the other one is in the hollow shaft outside the set; inside a solid shaft 1,3,5 and after the connection block, and the outer hollow drive shaft connected to the gear 4 and 6, two clutches each responsible for a ratcheting action of the drive shaft, the engine power will not be made wherein a drive shaft discontinuous transmission, taking into account the life of parts, the designer chose the tank diaphragm clutch, clutch operation is controlled by a hydraulic system.
the use of two sets of clutches and before the next gear shift tooth has been pre-selected, thus DSG shift speed is very fast, just less than 0.2 seconds, the next file was already in , and also faster than the manual transmission of the best technology professional drivers, so use the same car using DSG is more faster than MT acceleration performance.
In actual driving, the DSG gives the impression that the entire process of shifting a little feel frustrated or push-pull, just from the speed table can reflect changes in gear. In addition, DSG also a variety of driving modes, such as Sport mode, with the help of the electronic program plus the model block was significantly slow and downshifts are a big improvement, the shift time is adjusted shorter, like driving a sports car general. The driver can move the shift lever through or click the button on the steering wheel at any time the automatic mode to manual mode switching, to provide full dynamic driving style. Both sides of the steering wheel the driver can shift button can be a downshift or upshift operation without touching the shift lever, like F1 F1 car drivers to drive the same. Under intense driving environment, such as high-speed corners, the manual shift is very often necessary, in DWith the help of SG, the driver in the process of shifting but also to experience the special throttle automatically increase the fun.