Share
VIDEOS 1 TO 50
Torque Vectoring Differential - Explained
Torque Vectoring Differential - Explained
Published: 2015/02/01
Channel: Engineering Explained
Rimac All Wheel Torque Vectoring
Rimac All Wheel Torque Vectoring
Published: 2016/02/18
Channel: RimacAutomobili
Audi. Torque vectoring
Audi. Torque vectoring
Published: 2012/03/30
Channel: km77.com
Benefits of torque vectoring enabled by Protean Electric in-wheel motors
Benefits of torque vectoring enabled by Protean Electric in-wheel motors
Published: 2017/06/08
Channel: Protean Electric
JP Performance - Torque Vectoring | Lexus RC-F
JP Performance - Torque Vectoring | Lexus RC-F
Published: 2017/10/26
Channel: JP Performance
Mazda
Mazda's New & Unique Torque-Vectoring Technology Demonstrated & Explained
Published: 2016/07/19
Channel: TFLnow
Audi quattro with sports differential
Audi quattro with sports differential
Published: 2010/03/08
Channel: Audi Deutschland
2014 Porsche Macan - Porsche Torque Vectoring Plus (PTV Plus)
2014 Porsche Macan - Porsche Torque Vectoring Plus (PTV Plus)
Published: 2013/12/13
Channel: GommeBlog.it: Car & Performance
Torque Vectoring - Controller Design, Tuning, and Testing - MATLAB and Simulink Racing Lounge
Torque Vectoring - Controller Design, Tuning, and Testing - MATLAB and Simulink Racing Lounge
Published: 2015/04/07
Channel: MATLAB
Simulink Challenge 2016
Simulink Challenge 2016
Published: 2016/12/07
Channel: KA-RaceIng e.V.
ZF vector differential
ZF vector differential
Published: 2010/02/21
Channel: PetrolSmell
So funktioniert das Torque Vectoring Differential am Lexus GS-F und RC-F
So funktioniert das Torque Vectoring Differential am Lexus GS-F und RC-F
Published: 2015/12/06
Channel: mein-auto-blog.de
EVO-DNA im SUV? ALLRAD MIT TORQUE VECTORING  Allrad vs. Frontantrieb - 2018 Mitsubishi Eclipse Cross
EVO-DNA im SUV? ALLRAD MIT TORQUE VECTORING Allrad vs. Frontantrieb - 2018 Mitsubishi Eclipse Cross
Published: 2017/12/17
Channel: VOLLLAST - Alles rund ums Automobil
Torque Vectoring Electric Drive Module
Torque Vectoring Electric Drive Module
Published: 2013/11/22
Channel: BorgWarner Corporate
Ford - Torque Vectoring Control
Ford - Torque Vectoring Control
Published: 2010/12/07
Channel: Ford Europe
AWD torque vectoring differential prototype
AWD torque vectoring differential prototype
Published: 2015/07/14
Channel: brickosouch
Porche Torque Vectoring
Porche Torque Vectoring
Published: 2016/01/19
Channel: TREMECtv
e-AAM Electric Torque Vectoring System Comparison on Ice Handling Track
e-AAM Electric Torque Vectoring System Comparison on Ice Handling Track
Published: 2011/03/23
Channel: eAAMDrivelineSystems
Vehicle Modeling and Simulation: Implementing a Torque-Vectoring Stability Controller
Vehicle Modeling and Simulation: Implementing a Torque-Vectoring Stability Controller
Published: 2014/08/05
Channel: Maplesoft
Ricardo Torque Vectoring
Ricardo Torque Vectoring
Published: 2012/07/19
Channel: RicardoGroup
Porsche Boxster S - Porsche Torque Vectoring (PTV)
Porsche Boxster S - Porsche Torque Vectoring (PTV)
Published: 2015/11/02
Channel: Porsche of South Shore
The Opel Insignia: 4x4 Driving Dynamics
The Opel Insignia: 4x4 Driving Dynamics
Published: 2017/03/19
Channel: Opel
Rimac All Wheel Torque Vectoring development and calibration
Rimac All Wheel Torque Vectoring development and calibration
Published: 2014/08/31
Channel: Evans Electric
Ford Focus with Torque Vectoring Control
Ford Focus with Torque Vectoring Control
Published: 2011/04/05
Channel: Ford UK
How does Active Torque Vectoring (ATV) assist for safer driving?
How does Active Torque Vectoring (ATV) assist for safer driving?
Published: 2017/02/20
Channel: Subaru South Africa
Nissan JUKE Torque Vectoring
Nissan JUKE Torque Vectoring
Published: 2010/07/21
Channel: reviewcars
TORQUE VECTORING IN THE FOCUS ST
TORQUE VECTORING IN THE FOCUS ST
Published: 2016/08/24
Channel: TItus Joseph Drexler
3 New Nissan ALL MODE 4x4 i with Torque Vectoring
3 New Nissan ALL MODE 4x4 i with Torque Vectoring
Published: 2016/08/11
Channel: Nissan Bac Giang
Torque Vectoring Control | Ford How-To Video
Torque Vectoring Control | Ford How-To Video
Published: 2013/12/16
Channel: Ford Australia
Torque Vectoring Control | Ford Canada
Torque Vectoring Control | Ford Canada
Published: 2013/04/22
Channel: FordCanada
Nissan ALL MODE 4x4 i with Torque Vectoring
Nissan ALL MODE 4x4 i with Torque Vectoring
Published: 2013/01/09
Channel: Automotive Zone
Jaguar F-TYPE | Torque Vectoring
Jaguar F-TYPE | Torque Vectoring
Published: 2017/01/10
Channel: Jaguar
Do you know ,Torque Vectoring ? | QuickTalk
Do you know ,Torque Vectoring ? | QuickTalk
Published: 2016/03/26
Channel: Automobiles Encyclopedia
The new 718 Cayman – PTV (Porsche Torque Vectoring)
The new 718 Cayman – PTV (Porsche Torque Vectoring)
Published: 2016/05/13
Channel: Porsche
Lexus RC F - Torque-Vectoring Differential
Lexus RC F - Torque-Vectoring Differential
Published: 2014/08/27
Channel: Lexus UK
Can Torque Vectoring By Braking Stop
Can Torque Vectoring By Braking Stop 'One Tyre Fire'?
Published: 2016/03/09
Channel: Car Throttle Extra
Opel Insignia 4x4 with Torque Vectoring | HOW WORKS this All Wheels Drive Car System [GOMMEBLOG]
Opel Insignia 4x4 with Torque Vectoring | HOW WORKS this All Wheels Drive Car System [GOMMEBLOG]
Published: 2017/03/31
Channel: GommeBlog.it: Car & Performance
2018 Subaru WRX vdc torque vectoring steering feel trac mode squeaky fan belt suspension tuning
2018 Subaru WRX vdc torque vectoring steering feel trac mode squeaky fan belt suspension tuning
Published: 2017/11/28
Channel: Mechanical Mentor
Dynamic Torque Vectoring | Lincoln How-to Video
Dynamic Torque Vectoring | Lincoln How-to Video
Published: 2016/11/15
Channel: LincolnOwner
Benefits of bringing torque vectoring to electric vehicles
Benefits of bringing torque vectoring to electric vehicles
Published: 2017/09/25
Channel: GKN plc
heat 3: Torque Vectoring Control
heat 3: Torque Vectoring Control
Published: 2011/04/04
Channel: Ford Nederland
2017 ACURA NSX - the ONLY true torque vector steering car in the World
2017 ACURA NSX - the ONLY true torque vector steering car in the World
Published: 2016/06/13
Channel: thedriversseat
Torque Vectoring Driving Innovation
Torque Vectoring Driving Innovation
Published: 2012/09/18
Channel: DrivingTelevision
2015 Nissan Juke NISMO RS AWD Torque Vectoring Demo
2015 Nissan Juke NISMO RS AWD Torque Vectoring Demo
Published: 2015/07/15
Channel: alex Bruce
Askdap Episode 116 | Is the PP GTI Diff Torque Vectoring + Audi 3.0t Reliability
Askdap Episode 116 | Is the PP GTI Diff Torque Vectoring + Audi 3.0t Reliability
Published: 2018/01/22
Channel: Deutsche Auto Parts
Honda AHA torque vectoring Agile Handling Assist
Honda AHA torque vectoring Agile Handling Assist
Published: 2016/12/23
Channel: Automobilissimo
Challenger AccuDrive - Torque Vectoring
Challenger AccuDrive - Torque Vectoring
Published: 2017/05/03
Channel: Challenger Videos
Tracción 4X4 de Torque Vectoring de Nissan
Tracción 4X4 de Torque Vectoring de Nissan
Published: 2010/08/29
Channel: eautocommx
Subaru Outback torque vectoring
Subaru Outback torque vectoring
Published: 2010/12/19
Channel: Alberto Mozzanega
MUTE Torque Vectoring Drivetrain
MUTE Torque Vectoring Drivetrain
Published: 2011/10/21
Channel: FZGTUM
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Torque vectoring is a technology employed in automobile differentials. A differential transfers engine torque to the wheels. Torque vectoring technology provides the differential with the ability to vary the torque to each wheel. This method of power transfer has recently become popular in all-wheel drive vehicles.[1] Some newer front-wheel drive vehicles also have a basic torque vectoring differential. As technology in the automotive industry improves, more vehicles are equipped with torque vectoring differentials. This allows for the wheels to grip the road for better launch and handling.

History[edit]

The phrase "Torque Vectoring" was first used by Ricardo in 2006 SAE 2006-01-0818 in relation to their driveline technologies. The torque vectoring idea builds on the basic principles of a standard differential. A torque vectoring differential performs basic differential tasks while also transmitting torque independently between wheels. This torque transferring ability improves handling and traction in almost any situation. Torque vectoring differentials were originally used in racing. Mitsubishi rally cars were some of the earliest to use the technology.[2] The technology has slowly developed and is now being implemented in a small variety of production vehicles. The most common use of torque vectoring in automobiles today is in all-wheel drive vehicles.

Functional description[edit]

The idea and implementation of torque vectoring are both complex. The main goal of torque vectoring is to independently vary torque to each wheel. Differentials generally consist of only mechanical components. A torque vectoring differential requires an electronic monitoring system in addition to standard mechanical components. This electronic system tells the differential when and how to vary the torque. Due to the number of wheels that receive power, a front or rear wheel drive differential is less complex than an all-wheel drive differential. The impact of torque distribution is the generation of yaw moment arising from longitudinal forces and changes to the lateral resistance generated by each tyre. Applying more longitudinal force reduces the lateral resistance that can be generated. The specific driving condition dictates what the trade-off should be to either damp or excite yaw acceleration. The function is independent of technology and could be achieved by driveline devices for a conventional powertrain, or with electrical torque sources. Then comes the practical element of integration with brake stability functions for both fun and safety.

Front/rear wheel drive[edit]

Torque vectoring differentials on front or rear wheel drive vehicles are less complex, yet share many of the same benefits as all-wheel drive differentials. The differential only varies torque between two wheels. The electronic monitoring system only monitors two wheels, making it less complex. A front-wheel drive differential must take into account several factors. It must monitor rotational and steering angle of the wheels. As these factors vary during driving, different forces are exerted on the wheels. The differential monitors these forces, and adjusts torque accordingly. Many front-wheel drive differentials can increase or decrease torque transmitted to a certain wheel.[3] This ability improves a vehicle’s capability to maintain traction in poor weather conditions. When one wheel begins to slip, the differential can reduce the torque to that wheel, effectively braking the wheel. The differential also increases torque to the opposite wheel, helping balance the power output and keep the vehicle stable. A rear-wheel drive torque vectoring differential works similarly to a front-wheel drive differential.

All-wheel drive[edit]

Most torque vectoring differentials are on all-wheel drive vehicles. A basic torque vectoring differential varies torque between the front and rear wheels. This means that, under normal driving conditions, the front wheels receive a set percentage of the engine torque, and the rear wheels receive the rest. If needed, the differential can transfer more torque between the front and rear wheels to improve vehicle performance.

For example, a vehicle might have a standard torque distribution of 90% to the front wheels and 10% to the rear. Under harsh conditions, the differential changes the distribution to 50/50. This new distribution spreads the torque more evenly between all four wheels. Having more even torque distribution increases the vehicle’s traction.[4]

There are more advanced torque vectoring differentials as well. These differentials build on basic torque transfer between front and rear wheels. They add the capability to transfer torque between individual wheels. This provides an even more effective method of improving handling characteristics. The differential monitors each wheel independently, and distributes available torque to match current conditions.

Electric vehicles[edit]

In an electric vehicle all-wheel drive can be implemented with two independent electric motors, one for each axle. In this case the torque vectoring between the front and rear axles is just a matter of electronically controlling the power distribution between the two motors, which can be done on a millisecond scale.[5]

Torque vectoring is even more effective if it is actuated through two electric motor drives located on the same axle, as this configuration can be used for shaping the vehicle understeer characteristic and improving the transient response of the vehicle.[6][7] A special transmission unit is used in the experimental car MUTE of the Technical University of Munich, where the bigger motor is providing the driving power and the smaller for the torque vectoring functionality. The detailed control system of the torque vectoring is described in the doctoral thesis of Dr.-Ing. Michael Graf.[8] In case of electric vehicles with four electric motor drives, the same total wheel torque and yaw moment can be generated through an infinite number of wheel torque distributions. Energy efficiency can be used as a criterion for allocating the torques among the individual wheels.[9][10]

Specific implementations[edit]

Active Yaw Control by Mitsubishi[edit]

Active Yaw Control (AYC) is an automobile feature that uses an active differential to transfer torque to the wheels that have the best grip on the road. Unlike traditional mechanical limited-slip differentials, an AYC is electronically controlled.[11][12]

AYC was designed by Mitsubishi Motors, first introduced in the Mitsubishi Lancer Evolution IV. It has been included in certain models of every subsequent generation, and was also used in the VR-4 variant of the eighth generation Mitsubishi Galant sedan and Legnum wagon. Later developments led to S-AYC (Super-Active Yaw Control), first introduced on the Evolution VIII, utilizing a planetary gearset which could support an even greater torque bias than the previous system.[13][14] AYC and S-AYC have also been seen in several Mitsubishi concept cars based on the underpinnings of the Lancer Evo, such as the CZ3 Tarmac and Tarmac Spyder, the Montero Evolution, the RPM 7000, and the Concept-X.[15]

Active yaw control is based on a computer-controlled rear differential which can actively split torque based on input from various accelerometers in the vehicle measuring longitudinal and lateral g forces, steering, brakes and throttle position.[12] Where ABS brakes are fitted they too are included in the input parameters. It accomplishes this via two hydraulic clutches which can limit torque on individual axles. This system should not be confused with stability control systems which utilize the braking system of a vehicle by individually braking certain wheels to rotate and slow the car (such as Electronic brakeforce distribution). AYC is a performance-oriented system which aims to increase cornering speeds.

Dynamic Performance Control by BMW[edit]

The BMW Active Yaw Control is called Dynamic Performance Control.

Quattro with torque vectoring by Audi[edit]

Audi produced a torque vectoring system capable of varying the torque received by any wheel of the vehicle: quattro with torque vectoring. This allows each wheel to receive independent torque amounts to increase the overall performance of the vehicle.

SLS AMG Electric Drive by Mercedes[edit]

In 2012, Mercedes introduced the SLS AMG Electric Drive. Mercedes engineers were able to make the system work with a higher traction torque level on the outer wheels than on the inner wheels during cornering, in order to tighten the turning radius.[16][17]

Super Handling All-Wheel Drive by Acura[edit]

Acura’s Super Handling All-Wheel Drive (SH-AWD) can transfer power between front and rear and vary the amount of torque transmitted to each rear wheel. The front wheels, however, do not receive different amounts of torque.[18]

See also[edit]

References[edit]

  1. ^ Ireson, Nelson (Dec 28, 2010). "The 2012 Ford Focus Gets Torque Vectoring, We're Not Thrilled". motorauthority.com. Retrieved 2 November 2012. 
  2. ^ "Torque Vectoring and Active Differential". Torque-vectoring.belisso.com. 2009-11-22. Retrieved 2012-03-12. 
  3. ^ "Torque Vectoring" (PDF). www.vehicledynamicsinternational.com. 
  4. ^ "Torque Vectoring: The Hyper-Smart, Fuel-Efficient Future of All-Wheel Drive". Popular Mechanics. 2009-10-01. Retrieved 2012-03-12. 
  5. ^ Davies, Alex (2014-10-10). "The Model D Is Tesla's Most Powerful Car Ever, Plus Autopilot". Wired.com. Retrieved 2014-10-11. Musk said the added efficiency is thanks to the electronic system that will shift power between the front and rear motors from one millisecond to the next, so each is always operating at its most efficient point. 
  6. ^ De Novellis, L.; Sorniotti, A.; Gruber, P.; Orus, J.; Rodríguez, J.M.; Theunissen, J.; De Smet, J. (2015). "Direct Yaw Moment Control Actuated through Electric Drivetrains and Friction Brakes: Theoretical Design and Experimental Assessment". Mechatronics. 26: 1–15. doi:10.1016/j.mechatronics.2014.12.003. 
  7. ^ Goggia, T., Sorniotti, A., De Novellis, L., Ferrara, A., Gruber, P., Theunissen, J., Steenbeke, D., Knauder, B., Zehetner, J. 'Integral Sliding Mode for the Torque-Vectoring Control of Fully Electric Vehicles: Theoretical Design and Experimental Assessment', IEEE Transactions on Vehicular Technology, 2014 (http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6857437&tag=1)
  8. ^ Graf M. 'Methode zur Erstellung und Absicherung einer modellbasierten Sollvorgabe für Fahrdynamikregelsysteme', Technical University of Munich, 2014(https://mediatum.ub.tum.de/doc/1221813/1221813.pdf)
  9. ^ De Novellis, L., Sorniotti, A., Gruber, P. 'Wheel Torque Distribution Criteria for Electric Vehicles With Torque-Vectoring Differentials', IEEE Transactions on Vehicular Technology, vol.63 (4), pp. 1593-1602, 2013(http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6656947)
  10. ^ Chen, Y., Wang, J. 'Fast and Global Optimal Energy-Efficient Control Allocation With Applications to Over-Actuated Electric Ground Vehicles', IEEE Transaction on Control Systems Technology, vol.20 (5), pp. 1202-1211, 2012(http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5981409)
  11. ^ Mitsubishi Technical Features: Active Yaw Control Archived April 26, 2007, at the Wayback Machine., Mitsubishi Motors UK website.
  12. ^ a b "What is Active Yaw Control (AYC)?", Mitsubishi Lancer Register FAQ.
  13. ^ "Latest MMC Technologies and Future Goals" Archived May 30, 2007, at the Wayback Machine., Mitsubishi Motors website.
  14. ^ "Development of Super AYC" Archived November 12, 2006, at the Wayback Machine., Yuichi Ushiroda, Kaoru Sawase, Naoki Takahashi, Keiji Suzuki & Kunihiro Manabe, Mitsubishi Motors website.
  15. ^ "Mitsubishi Concept Cars" Archived 2007-02-05 at the Wayback Machine., MMNA website.
  16. ^ "Harris Helps Us Understand Negative Torque with Mercedes-Benz SLS AMG E-Cell Test". carscoops.com. 2013-04-11. Retrieved 2013-09-21. 
  17. ^ "Mercedes SLS Electric Drive (2013) sets new Nürburgring lap record". carmagazine.co.uk. 2013-06-07. Retrieved 2013-09-21. 
  18. ^ "2012 Acura TL | Features | Performance". Acura.com. Retrieved 2012-03-12. 

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license