Photo: The News Wheel
7-Speed Dual-Clutch Transmission with Smart Actuation. The seven-speed dual-clutch transmission 7DCT300 is a transmission of third generation with Smart Actuation. The dual-clutch transmission for mid and front transverse applications sets standards in efficiency. Due to Smart Actuation, the transmission requires only as much energy as a light. The seven-speed dual-clutch transmission 7DCT300 is a transmission of third generation with Smart Actuation. The dual-clutch transmission for mid and front transverse applications sets standards in efficiency. Due to Smart Actuation, the transmission requires only as much energy as a light bulb.
Many drivers treat their car’s dual-clutch transmission in the same way that they would drive a car that had an automatic transmission. But, a dual-clutch transmission is more like a manual transmission than automatic. And if you don’t treat it properly, you could permanently damage it.
Some of your current driving habits could ruin a dual-clutch transmission. If you’re doing any of the following and your car has a DCT, cut it out!
Is Your Car Having Trouble Driving?Take action if any of these warning indicator lights are illuminated
Habits to avoid so you don’t ruin a dual-clutch transmission
Stop taking your foot off the brake
If you have a tendency to let your DCT sit without applying the brakes, such as waiting in traffic or at the foot of an incline, you could be wearing out the clutch pack. When the brakes aren’t applied, some DCTs will make the clutches continually slipping to keep you in place. This depends on how your transmission operates, but you could be putting extra heat and wear on the clutch pack.
Stop putting the car in neutral
Those who are used to driving stick shifts might have a habit of putting their car in neutral when they’re fully stopped at an intersection. You don’t need to do this with a dual-clutch transmission. The car will intuitively release the clutches when you’re braking, so there’s no point switching out of Drive.
Seven Speed Dual Clutch Transmission
If you do ever put the car in neutral, keep the brake depressed when shifting into and out of neutral to protect the clutch.
Are You Guilty of Any of These Common Car Maintenance Mistakes?Find out…
Stop launching improperly
In sportier cars with dual-clutch transmissions, drivers like to launch from a stand-still, but doing so incorrectly can severely damage the gearbox and clutch disks. Don’t hold the brake pedal while you’re revving the gas because the clutch will take damage trying to move the car while you’re fighting it with the brakes. In general, never accelerate the engine when the brakes are applied.
Stop keeping the car in place by accelerating
If you’re sitting on an incline, don’t repeatedly tap the acceleration pedal to keep your position. The same goes for putting the car in reverse and accelerating backward to stop from rolling down a hill. Both practices will quickly overheat the clutch. Use the brakes instead.
Clutch behavioral logic and functions vary from manufacturer to manufacturer, so research your specific model to find out how to properly operate. Your car’s owner’s manual will have a lot of information on proper handing to not ruin a dual-clutch transmission.
Sources:Engineering Explained, 2014 Hyundai Veloster owner’s manual
7 Speed Dual Clutch Transmission Kia
Aaron is unashamed to be a native Clevelander and the proud driver of a Hyundai Veloster Turbo (which recently replaced his 1995 Saturn SC-2). He gleefully utilizes his background in theater, literature, and communication to dramatically recite his own articles to nearby youth. Mr. Widmar happily resides in Dayton, Ohio with his magnificent wife, Vicki, but is often on the road with her exploring new destinations. Aaron has high aspirations for his writing career but often gets distracted pondering the profound nature of the human condition and forgets what he was writing… See more articles by Aaron.
7 Speed Dual Clutch Transmission Meaning
Ford 7 Speed Automatic Transmission
In the Mercedes-AMG GT, the transmission is placed in a rear transaxle configuration, serving as the car’s transmission, rear differential, and rear-axle, all in a single assembly.
Connecting this assembly to the V8 engine in a single, fixed unit is done with the use of a torque tube. Inside, a carbon fiber drive shaft spins at the same speed as the engine.
At only 8.6 pounds (3.9 kilograms), the torque tube is similar in weight and structural design as the drive shaft on race cars. The transmission is also fitted with a centrifugal pendulum placed into the two-mass flywheel that eliminates oscillations and vibrations.
Due to this configuration and the technologies it uses, the car achieves an ideal 47% front and 53% rear weight distribution which dramatically improves the car stability and handling.
This marvelous feat of engineering functions as two transmissions built into one, each equipped with an electronically controlled clutch. One of the transmissions engages and disengages the odd numbered gears and the other does the same with the even numbered gears.
Since the gear sets are independent the control system can pre-engage the next gear, prior to the shift. For example, if the car is driving in fourth gear, the fifth is pre-engaged.
The upshift occurs in less than 100 milliseconds after interacting with the paddle shifter, when one clutch disengages and the other engages.
To achieve reverse gear without the use of an added shaft that would have created extra weight and extend the overall design of the transmission, the Speedshift DCT 7 intelligently engages a combination of gears two, reverse, thee and one. With the use of all available shafts, the car can be maneuvered backwards.
The first gear has a higher ratio on the AMG GT while the seventh gear and the final drive gave lower ratios. This helps achieve a very spontaneous and agile acceleration, supplies instant response to gas pedal movements, and offers increased shift performance and response time.
There are three pre-installed drive programs to enjoy on standard AMG GTs: 'C' (Comfort), 'S' (Sport), 'S+' (Sport Plus). A fourth “I” (Individual), customizable program is also available.
The high-end models like the AMG GT S, GT C and AMG GT R also have a “RACE” drive program available, which adapts shifting dynamics of the dual-clutch transmission to the requirements of a racetrack.
The AMG Speedshift DCT 7G is still one of the quickest, most agile transmission ever made and although the German constructor, Magna PT has shifted focus on the development of the eight-speed dual-clutch transmission 8DCL900, it will remain a timeless piece of automotive technology in cars such as the Mercedes-AMG GT.