The DCT clutches function automatically, in contrast to an automatic transmission. A Hyundai dual-clutch transmission is essentially two gearboxes that are managed by an intricate system of hydraulics, electronics, and computers. This system enables your Hyundai to change gears without interrupting the transmission’s ability to transfer power from the engine. As a result, your Hyundai model will experience considerably smoother and quicker gear shifts as well as better fuel efficiency. See more information about the Hyundai dual-clutch transmission below.
In This Article...
How does DCT function?
Why are twin clutches considered as an increasingly attractive alternative to automatic transmissions while automated systems are less expensive and less complex, despite the clear advantages of automatic transmissions over manual ones—taking the driver’s duty off of them?
For this reason, DCT is more efficient than other gearbox types since it provides quicker gear shifts and better fuel economy.
Vimeo serves as an external video player for this page. Vimeo must establish a Cookie in order for you to see this video. Here, please change your cookie settings.
A dual-clutch gearbox eliminates the need for a clutch pedal by using two clutches that are managed by an intricate network of hydraulics and electronics.
In a DCT, as opposed to an automated transmission, the clutches work independently. The odd-numbered gears are controlled by one clutch, and the even-numbered gears by the other. This configuration enables the car to change gears without stopping the power transfer from the engine to the transmission, as would happen, for instance, with a manual transmission while switching between the accelerator and clutch pedals.
Double-clutch (wet)
The double clutch improves thermal resistance
The next-generation automotive AT based on two shafts and two clutches is known as DCT. The two clutches, which are each directly connected to the engine, manage the odd- and even-numbered gears in turn and independently arrange the gears to connect or separate the engine power. 8-speed wet DCT uses a wet double-clutch and valve body to amplify the benefits of DCT.
Hyundai’s new eight-speed dual clutch transmission is put to the ultimate clutch-slipping, heat loading reverse torture test in the driveway from hell for the 2021 Santa Fe.
I criticize Hyundai’s new 8-speed DCT in the diesel Santa Fe for 12 rounds up the driveway from hell in my report.
Here is some mountain climbing backstory to set the scene before trying to murder the DCT in the bloodiest possible manner.
The whole review will be available soon after a week of testing the mid-spec Elite Santa Fe and a few weeks after the Highlander.
In the meantime, it occurs to me that some of you really like the idea of purchasing a Santa Fe diesel (or its skin-twin, the Kia Sorento diesel, which shares exactly the same powertrain), but some of you are somehow averse to purchasing a vehicle with a dual-clutch transmission – so frightening – primarily because of Ford’s terrifying efforts, with its horrific ‘PowerShift’ dual-clutch transmission and its appalling reliability. You may remember that I covered that Power Shitshow fairly thoroughly.
In contrast, Hyundai-Kia’s most recent eight-speed DCT is a wet clutch system, which means the clutches function in an oil bath. To prevent overheating, the oil is routed into an exterior convective cooler.
The oil that cools the clutches and the oil that lubricates the gears are completely different in this system of oils.
The only thing you need to understand about clutch durability is that heat destroys clutches. That will soon be put to the test by us. really harsh.
By performing some extreme real-world reversing, I want to test whether I can cause a near-death heat experience in the Santa Fe diesel dual clutch.
And if it does pee in its pants, I will report it, and there will probably be a short phone call with Hyundai, whose temperature will be a little lower than the clutch pack.
You know how I always say, “Never buy a demonstrator,” if nothing else? Yeah. This would be one explanation, I suppose. (Really, that ought to be alright. Although I’ve been assured the transmission has thermal overload protection built in, let’s check out for sure.)
Operation of the Hyundai Wet Dual-Clutch Transmission
The eight-speed wet dual-clutch transmission designed for Hyundai N vehicles comes in manual or fully automatic modes. The wet DCT is intended to increase productivity, acceleration, and driving comfort.
The usage of oil in the wet DCT is the primary distinction between it and a standard dry dual-clutch gearbox. An electric oil pump is used by the Hyundai wet DCT to enhance powertrain movement and boost thermal endurance. This transmission technology combines the engaging feel of a manual transmission with the practicality of a conventional automatic transmission.
The wet DCT available in a few Hyundai N models will appeal to drivers seeking a more responsive and engaging performance on the road.
Hyundai DCT transmissions are produced by whom?
Hyundai Transys, a subsidiary of the Hyundai Motor Group, manufactures a variety of internal car gearboxes, axles, and seats.
Hyundai Transys combined with Hyundai DYMOS and Hyundai Powertech on January 1, 2019.
The first automatic gearbox specialist in South Korea, Hyundai Powertech, was founded in 2001. It has facilities in China, the United States, and South Korea. Its automatic transmissions are found in automobiles made by Hyundai, Kia, Dodge, and Jeep.
Hyundai DYMOS manufactures DCT and AMT MT-based gearboxes, axles, 4WD, and seats for use in automobiles.
Hyundai DCT is it wet or dry?
For effective swiftness of manual transmission (MT) and convenience of automatic transmission, double-clutch utilizes two distinct clutches.
The HYUNDAI TRANSYS 7-speed dry DCT for small and midsize vehicles and 8-speed wet DCT for big vehicles both provide distinctive dynamic speed shifts and excellent fuel economy. Depending on the construction, there are two different forms of DCT: wet and dry. Both variants are produced by HYUNDAI TRANSYS.
Wet DCT provides excellent cooling capabilities and good durability for higher torque engines, while dry DCT is affordable and efficient with a simpler construction and lower size. HYUNDAI TRANSYS DCT exhibits ideal response, great speed change, and outstanding acceleration function thanks to increased fuel efficiency.
improved acceleration thanks to the double clutch, direct engine connection, and quick shifting
What distinguishes the AMT and DCT?
The DCT essentially developed from the AMT. The DCT shares many internal components with its predecessor but adds a second gear shaft and a second hydraulic clutch. It is therefore referred to as a dual-clutch or two-clutch system. Odd-numbered gears are found on one shaft, while even-numbered gears are found on the other shaft.
Is DCT superior to CVT?
As it doesn’t allow gasoline go to waste during transmission shifts, DCT is the most efficient transmission type available. Contrarily, CVT isn’t too far behind and is also reasonably effective. Power to the wheels is not interrupted by the belt’s constant movement between the pulleys. Both CVT and DCT have good fuel economy; but, if you want a transmission that gives you an advantage, choose a DCT.
What are the advantages of a DCT?
Benefits of Dual-Clutch Transmission DCTs often offer smoother performance and more efficient fuel use than AMTs and manual transmissions. In the world of performance driving, they are frequently favoured since they shift easily and precisely.
Why did BMW discontinue DCT?
The ZF eight-speed is more effective and simpler to adjust for maximum efficiency, which is the real cause. The DCT is a victim of the times since efficiency in today’s automotive environment is more important than virtually everything else. Additionally, BMW M will soon make the transition to electrification.
Is DCT preferable to manual?
Dual-clutch automatic transmissions are quicker to shift than conventional automatic transmissions and manual transmissions. It is never necessary to detach the powerplant from the transmission, enabling extremely rapid gear changes. As a result, acceleration is increased when compared to a conventional manual or automatic.
Is DCT entirely automated?
Triple-Clutch Transmission Typically, these gearboxes can be controlled fully automatically or manually using the paddle shifters on the steering wheel. Among other vehicles, a DCT is available in the Hyundai i20, Kia Sonet, and Volkswagen Tiguan All-Space.
DCT is it automatic or manual?
As we mentioned previously, a clutch separates the engine’s power-generating crankshaft from the transmission so that the driver can change gears without perhaps causing the machinery to become jammed.
It should not be surprising that a dual-clutch transmission contains two clutches. Why? Since a DCT essentially combines two gearboxes, each of which needs a clutch for the same reason that a manual transmission does,
Additionally, drivers of vehicles with dual-clutch transmissions do not have to manually shift from one gear to another by utilizing the shift lever. Instead, the process of choosing a gear is automated, allowing a DCT to function like an automatic transmission. It does not, however, choose the gears in the same manner as a typical automatic transmission with a torque converter, as we will explain.
The dual-clutch transmission’s beauty is in how swiftly it can shift from one gear to another. This quick shifting is made possible by the fact that, when a gear is engaged in one of the DCT’s two internal transmissions, the second internal transmission already has the selected gear selected and is prepared for immediate engagement.
As a result, switching between gears with a DCT is substantially quicker than switching between gears with a typical manual transmission or a standard automatic transmission. In performance and racing cars, where split seconds can mean the difference between winning and losing, this is very useful.
How trustworthy is DCT?
Yes, due to the climate, DCT is not advised for nations like India. In addition, well-known automakers like Ford and VW shifted their automatic models back to torque converter vehicles. The DCT was a complete failure. As a result, choose torque converter vehicles for automatic
Can DCT be used in a city?
Multiple internal computers control a dual-clutch transmission (DCT), also known as a twin-clutch gearbox or double-clutch transmission. The entire procedure is automated thanks to these computers, which do away with the necessity for the driver to manually shift gears. You would need to softly press the accelerator while traveling in bumper-to-bumper traffic and avoid keeping the engine on the boil. You won’t experience any DCT overheating problems if you drive calmly. With its incredibly fast changes, the DCT gives the impression of being an automatic transmission that best suits the enthusiast. Their fuel efficiency is entirely dependent on your driving style. A mild, smooth input will produce good efficiency and, in most situations, will come quite near to the efficiency figures you may get from a car with a manual gearbox. A DCT is therefore the greatest all-around vehicle, especially if your driving isn’t restricted to highway or city driving.
Is there a clutch on a DCT?
A manual transmission takes around half a second to execute a gear shift for a driver. Although this might not seem like much, the efficiency is noticeable when contrasted to the 8 milliseconds some DCT vehicles give. A DCT is much faster than its manual transmission competitors due to the rapid gear changes. In practice, a dual clutch transmission operates similarly to a regular manual transmission.
It has input and auxiliary shafts that hold the gears. Additionally, it has synchronizers and a clutch. The primary distinction is the absence of a clutch pedal in a DCT. Because computers, solenoids, and hydraulics handle the shifting process, there is no longer a need for the clutch pedal. The driver can still use buttons, paddles, or gear shifts to tell the computer system when to carry out specific tasks. This enhances the overall driving experience and is regarded as one of the most dynamic acceleration methods available.