Shifting gears has always been a captivating dance between the driver and their vehicle, a symphony of precision and power. And when it comes to the world of automobiles, few names command as much respect as Audi. Known for their unparalleled ingenuity and relentless pursuit of perfection, Audi has emerged as a titan in the automotive industry. In their quest to redefine driving, Audi has unleashed a myriad of automatic transmission technologies, each one a technological marvel in its own right. In this article, we delve into the mystical world of Audi automatic gearbox types, unravelling their secrets and unraveling the art of seamless gear shifting. So fasten your seatbelts, for we are about to embark on a journey that will take us deep into the realm of gears and beyond, where innovation knows no bounds. Welcome to the enigmatic world of Audi Automatic Gearbox Types.
Audi has used two different types of automatic gearboxes in their cars, the Multitronic CVT (Continuous Variable Transmission) and the S-Tronic Dual Clutch, and even though Audi has chosen to discontinue the CVT transmission for upcoming models, there are plenty of Audis that use the CVT transmission still on the market, both new and used. If you are trying to decide which Audi transmission is better for you, let’s look at how each transmission works.
A CVT transmission has no fixed gears, which means there are no traditional gears that run from first to sixth but rather there are two pulleys connected to each other by a belt. One pulley is connected to the car’s engine, and the other pulley is connected to the transmission and wheels. The pulleys are designed in a way that they appear to be changing size infinitely, from small to large. This is achieved by having each pulley shaped like a cone.
When taking off, the belt at the pulley connected to the engine is at the narrowest end on the cone, and at the pulley connected to the transmission is at the widest end of the cone. As you gain speed, and would traditionally change to sixth gear, or your cars highest gear, the belt shifts to the widest end of the cone for the pulley connected to the engine, and the pulley connected to the transmission will shift the belt to the narrowest end of the cone.
Benefits of a CVT Transmission
- The car can adjust to the best rev-range for any given situation
- Since there is no need to change gears, the drive feels continuous and smooth
- Since the car can quickly adjust to the best rev-range, economy is improved
Disadvantage of a CVT Transmission
- The car will quickly to a rev point and stay at that point while the car is accelerating, which many drivers describe as feeling like having a clutch slip
- You lose the immediate throttle response that drivers are used to, and can make gaining speed to overtake a little more difficult
Dual Clutch Transmission
A dual clutch transmission, as I’m sure you’ve already guessed, has two clutches to manage gears. Clutch A is used on odd numbered gears – first, third, fifth and seventh. Clutch B is used on even numbered gears – second, fourth and sixth. The two clutches are designed to work with each other to make changes between gears smoother and quicker by reducing the time the clutch takes to move from gear to gear.
When you start your car and move it from park to neutral, clutch A prepares first gear and clutch B prepares second gear. When you shift to drive, Clutch A moves first gear into position, and as you begin accelerating, clutch B begins to spin second gear to match the rotational speed of the first gear. When it’s time to gear up, clutch A moves first gear out of position, and clutch B moves second gear into position making the change over from first to second instantaneous. Once second gear is in position, clutch A picks up third gear, and spins it to match the rotational speed of the second gear, and create the same effect for the change from first to second for second to third. This process repeats through all the gear changes.
Benefits of a Dual Clutch Transmission
- Acceleration is improved.
- Gear changes are smoother than traditional automatics
- Throttle response is maintained from manual versions
Disadvantages of a Dual Clutch Transmission
- There is no improvement on downshift time from traditional automatics
- Higher maintenance costs
- Mechatronics unit can go bad leading to expensive repairs
Whether you decide on a dual clutch transmission or a CVT transmission, you can rest your mind in knowing Audi is supplying you with the best transmission for your needs. Should you have questions, are looking to have some work done on your Audi, or have an Audi in need of a new or repaired transmission, please feel free to contact us at Foreign Affairs Motorsport, South Florida’s Premier German Auto Repair, Performance & Race Facility Since 1978.
1. Unleashing the Prowess: The Alluring World of Audi’s Automatic Gearbox Types
The world of Audi’s automatic gearbox types is a mesmerizing realm that unveils the perfect blend of power and elegance. Every gear shift is a performance that strives to redefine the boundaries of automotive excellence. Let us embark on a captivating journey and explore the various automatic gearbox types that Audi has brought forth to the world.
1. S Tronic: This dual-clutch transmission effortlessly combines the efficiency of a manual gearbox with the convenience of an automatic. Seamlessly shifting gears, it ensures lightning-fast acceleration and retains exceptional fuel efficiency. The S Tronic gearbox lies at the heart of Audi’s thrill-inducing sports models, delivering captivating performance on the road. Its lightning-quick gear changes make for an experience that is as thrilling as it is efficient.
2. Tiptronic: Combining the best of both worlds – the comfort of an automatic with the control of a manual – Audi’s Tiptronic transmission offers an incredible driving experience. Whether cruising along peaceful highways or conquering winding roads, the Tiptronic gearbox adapts effortlessly to your driving style. Equipped with electronically-controlled hydraulic clutches, it ensures smooth and precise gear changes, enhancing
2. Decoding the Sophistication: Comprehensive Guide to Audi’s Varied Automatic Gearbox Types
Automated Manual Transmission (AMT)
Automated Manual Transmission, or AMT, is the most commonly used version of automatic transmission in India. Similar in mechanism to the manual transmission, the AMT has sensors and actuators performing the work of clutch and shifting gears. Also known as an automated manual, the AMT uses hydraulics, linked to the electronic control unit (ECU) of the car, to complete a gearshift. A pre-programmed gear shift pattern is recorded and stored in the ECU. As the car revs to a certain RPM level the ECU takes the charge from the actuators and operates both the clutch and gearbox in transition. Since, automatic transmission variants of the cars are pricier than the standard manual variants, an AMT instead allows manufacturers to offer them at an affordable price. Maruti Suzuki has been offering the AMT in the automatic variants of S-Presso, Celerio or Ignis while Renault adopted the use of AMT in its cars since 2010, which can be seen in the Kwid and the Triber. A lot of other companies, like Tata and Mahindra also use AMTs in their cars.
Continuously Variable Transmission (CVT)
Continuously Variable Transmission or CVT is a single speed automatic gearbox, compact in size and simple in construction. The CVT box involves two cone shaped pulleys, connected via V-shaped drive belt, where one pulley is connected to the engine and the other to the wheel. The cone shaped pulleys move according to the engine revs as per the power inputs and the drive belt maintains the same tension according to it. The two cones have an independent movement, thus having infinite gear ratios. CVT, as it has a simple mechanism, is more fuel-efficient and is smoother compared to conventional automatics. They are also very reliable, which is why manufacturers like Nissan and Toyota use CVTs in their cars.
Dual Clutch Transmission (DCT)
Dual Clutch transmission or DCT works with two clutch packs. One clutch controls the odd numbered gears while the other controls the even numbered gears. For example, when first gear is engaged, the odd clutch is in use, and the even clutch pre-selects the second gear, which allows continuous shifts without interrupting the power flow from engine to the transmission. The lightning quick shifts urged manufacturers to start using DCTs for supercars and sportscars, but since the DCTs can be tuned for seamless shifts while helping economy, they started to offer it on mass-market cars. However, due to their complex mechanism, DCTs aren’t the most reliable types of transmission and cost a lot when things go wrong.
Intelligent Manual Transmission (iMT)
Hyundai introduced Intelligent Manual Transmission or the iMT transmission with one of the variants of the Venue. The iMT is a clutchless manual, where the driver has to manually operate the gear lever in the event of an upshift or downshift while the clutch is operated automatically. The gear lever in an iMT is called the transmission gear shift lever (TGS) which is joined to the intention sensor, actuator and an (electronic) transmission control unit. When a driver wants to upshift or downshift, the TGS sends a signal to the transmission control unit, which in turn engages the hydraulic actuator to generate the hydraulic pressure which is then directed to a slave cylinder through a clutch tube. The cylinder then operates the clutch plate and pressure plate using the hydraulic pressure, which engages and disengages the clutch. The iMT transmission is on offer with the Hyundai i20, Venue and Kia Sonet in their turbo-petrol variants in India. However, the iMT wasn’t the first clutchless manual, there was the Manumatic and the Saab Sensonic too. The Hyundai Venue was the first car to get an iMT in India. Hyundai smartly pitched the iMT as an alternative to a manual and demanded only a premium of Rs 20,000 over its manual variant, which is not a bad deal as you get the best of both the worlds. For city traffic and highway cruising the iMT still serves as a better pick over a manual variant, as the absence of a clutch pedal allows you to think about one less thing while driving and even helps you achieve similar fuel-efficiency figures as the manual variant.
Torque Convertor Auto
A torque convertor automatic is the most commonly used automatic transmission, as they offer good performance and fuel efficiency without being too expensive to manufacture. A torque convertor auto involves a torque convertor that has two oppositely faced fans, a transmission fluid flows in the space of the torque convertor which helps transmit power from the engine to the transmission. A pump attached to the torque convertor sends the transmission fluid around the torque convertor, spinning the fan and transmitting the torque into the transmission. Due to this fluid-driven mechanism, the torque convertor has the leverage of more torque at lower-revs.
Since now you have a basic idea about the different types of automatic transmissions on offer, let us dig a little deeper into the names that various manufacturers have given them, and why.
Auto-Gear Shift (AGS)
Auto Gear Shift technology or AGS technology was introduced in India by Maruti Suzuki in 2014. In cars with AGS, the automated manual transmission (AMT) box has an Intelligent Shift Control Actuator operated by an electronic transmission control unit. The AGS transmission system has an ability to assess the driving conditions and adjusts the gear shifts accordingly and delivers better performance and efficiency. Since the actuator and control unit are mounted on the transmission unit, a synchronized movement of clutch and gear shift takes place which accounts for improved fuel efficiency and as a result, the engine remains in its powerband increasing its performance. Cars equipped with AGS tech are the automatic variants of Maruti Suzuki S-Presso, WagonR, Celerio, Ignis, Swift and Dzire.
Cambio Corsa is an automated manual transmission, and it was introduced with the Maserati Coupe and Spyder from 2001 to 2007. In the Cambio Corsa transmission, the upshifts and downshifts are done using paddle-shifters, while buttons on the central console engage the reverse gear. It is actually a manual transmission with a computer-controlled clutch. The gearbox here is mounted longitudinally at the rear and contributes to 53/47 per cent weight distribution of the vehicle. Maserati MC20 comes with a Cambio Corsa transmission.
Direct Drive System (DDS)
Christian von Koenigsegg invented the Direct Drive System, a single-speed fixed-gear transmission system for the Regera. The gearbox has been developed in-house by the Koenigsegg Advanced Engineering team. The KDD (Koenigsegg Direct Drive) system eliminates the need for a transmission and allows for a pure EV mode. The DDS transmission has a 2.73:1 reduction ratio, where the crankshaft mounted on the ICE rotates 2.73 times for a single rotation of the output shaft. In cars equipped with the DDS transmission, the electric motor takes care of propulsion below the speed of 48kmph and above 48kmph (or 1000rpm) the hydraulic coupling begins to close and reaches a point where it is completely locked by the virtue of a clutch and provides direct and uninterrupted drive to the wheels. Further technical details about the mechanism behind the DDS are scarce. Also, in reverse gear, the electric motors do the job of propelling the car and the DDS transmission is unique in its way as it is only seen in the Koenigsegg Regera, which can attain a top-speed of 400kmph.
Direct Shift Gearbox
Direct Shift Gearbox, commonly known as DSG, was introduced by Volkswagen. It is an electronically-controlled, dual-clutch, multiple shaft automatic gearbox. The system involves two engine-driven clutch packs, where one shaft is of a larger diameter and the other is of a shorter diameter. The larger or the outer shaft is responsible for driving gear 1, 3, 5 and reverse while the inner or smaller clutch shaft drives 2, 4 and 6. The DSG transmission works similar to a motorcycle’s wet multi-clutch plate. The DSG transmission is licensed under the name of Volkswagen Group and used by vehicles under the group. Manufacturers like Audi, Bugatti, Lamborghini and Volkswagen use their versions of the DSG transmission in most of their cars, like the Audi A4, Bugatti Veyron and Lamborghini Huracan.
Intelligent Variable Transmission (IVT)
Intelligent Variable Transmission or IVT is similar in mechanism to a continuous variable transmission (CVT) but instead of having fixed gear shifts the IVT picks up the virtual gear shifts as per drivers input and driving conditions. The IVT transmission has continuous shifts that help provide better fuel efficiency in comparison to other automatic transmissions. The mechanism of continuous shifts is carried out by modulating the pressure of the pulley system in the transmission and adjusting the pressure based on the inputs by the driver and driving conditions around. Hyundai and Kia cars in India, like the Hyundai Verna, Creta and Kia Seltos, get the IVT transmission.
Porsche Doppelkupplungsgetriebe (PDK)
Porsche Doppelkupplungsgetriebe (PDK) translates to Porsche’s dual clutch transmission. It was designed by Porsche in 1980 for motorsport use and is now the most common automatic transmission in Porsche’s lineup. It is in use in the 718 Cayman, 718 Boxster, 911, Panamera and the Macan.