Talk:Quattro (four-wheel-drive system)

message: The article suggests that the Q7 uses a Borg Warner system to provide AWD.  There is no source cited for this.  The specifications suggest that the center diff is a Torsen unit like other Quattros have (see http://www.audiworld.com/model/q7/07/Q7%20tech.pdf).  The front and rear diffs are described as hypoid gears, which is identical to the arrangement on the other modern Quattro cars (see http://www.audiworld.com/model/).  Perhaps citing a reference and clarifying what you're trying to get across would clean the article up a bit.
Epinkert (talk) 04:26, 28 November 2007 (UTC)
thread_title: Adequately cite sources/clarify

message: Teutonic Tamer: The link I have repeatedly posted (http://www.aam.com/file.php/729/AAM06_AR.pdf) is not an advertisement...it is a Fortune 500 company's annual financial report.  Why do you doubt this?  UrPQ31 (talk) 04:20, 30 May 2008 (UTC)
thread_title: AAM quattro center differentials

message: I believe that a change does need to occur, regarding this article, 4motion, viscous coupling, etc.  Perhaps re-evaluate all of these related articles.  My idea:
1. Have a "VWAG Longitudinal AWD Systems" page (have "quattro" redirect here, but mention, for example, that the Audi A3 uses uses a "VWAG Transverse AWD Systems").
2. Have a "VWAG Transverse AWD Systems" page (have "4motion" and "syncro" redirect here).
3. Keep the "Haldex" and "TORSEN" pages, since they are their own entities, but edit to reflect the reorganization of the previous two pages.
The basis for my changes is that "quattro," "syncro, "4motion" are all BADGE names; they no longer definitively signify the type of AWD the vehicle has.UrPQ31 (talk) 20:50, 24 May 2008 (UTC)
replies: text: I agree --Zello (talk) 10:31, 10 July 2008 (UTC)
replies: text: I am willing to undertake this task now.  Any oppositions? UrPQ31 (talk) 22:20, 15 March 2009 (UTC)
thread_title: Subject Revision

message: :Image:Quattro.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
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BetacommandBot 05:32, 13 September 2007 (UTC)
thread_title: Fair use rationale for Image:Quattro.jpg

message: WP:NAMB is clear about when dablinks are necessary. No user will get to a page called quattro (four wheel drive system) by accident. If they type 'quattro' in a search box they will go to Quattro and be able to navigate there without a problem, and dablinks which do not include a link to Quattro shows a remarkable lack of concern for the readers' intentions. It is double redundant when every dablinked article (Audi Quattro and quattro GmbH) are linked to elsewhere on the page.
Articles are viewed by readers on many different screen sizes, and the facility is in every users preferences to force their own image sizes; that is why the recommendations at WP:IUP#Displayed image size exist. When people want to see the image at a greater resolution they can clickthru and see it full size. Again, that's the point of thumbnails. If YOU want to see the thumbnail at 300 pixels, set it in your preferences, but do not over-ride everybody elses choices. Iamaleopard (talk) 18:12, 2 May 2008 (UTC)
thread_title: dablinks and forced image sizes

message: I object to the title of this page. Quattro is not a system but a name used by Audi. In the definition it is used correct but also on several spots in the article the mistake is made
Robkraai (talk) 20:20, 11 June 2008 (UTC)
replies: text: Erm. . . if you actually read the first line of the lead paragraphs, it clearly states that quattro (meaning four in Italian), is the name used by Audi AG to indicate that four-wheel drive (4WD) technologies or systems are used on specific models of the Audi marque of cars (automobiles).  It goes on to state It is important to note that none of the above trademarks, or nomenclatures define the operation or type of 4WD system, as detailed below. - seems pretty clear to me!  Furthermore, using the title is notable, and condsiderably more notable than some of the lesser known 4WD tradenames. -- Teutonic_Tamer (talk to Teutonic_Tamer) 08:22, 15 June 2008 (UTC)

text: On the name issue, I believe you are splitting hairs.  OK, the most appropriate name would be "quattro (four wheel drive)" - ie jsut dropping the word "system" (however, being as this article is linked to quite a large number of related articles, fixing the redirects would be a major task in itself).  Audi would not be needed in the title, because the word "quattro" is highly recognisable as an Audi term.  On your secomd point, yes, the article does describe systems used by Audi, notably those used by Volkswagen, simply because both Audi and Volkswagen are part of the larger Volkswagen Group which naturally share engineering developments and technologies. -- Teutonic_Tamer (talk to Teutonic_Tamer) 12:39, 15 June 2008 (UTC)
thread_title: Title

message: The article states twice that all transverse Haldex-based AWD systems only have EDL on the front wheels. This is false at least for the VW Golf MkV and Transporter 4 systems, as documented in VW Self-Study Program circular 333 . I suspect that it is false for all Haldex-based systems, as it would substantially compromise the basic function of the system.  — Preceding unsigned comment added by 50.170.252.121 (talk) 04:21, 23 December 2013 (UTC)
replies: text: Oh dear, so you want to delete every single "trade" or marketing name, from every single commercial company from Wikipedia???  For the record, the article does NOT, in any way describe that the diff is being electronically controlled.  Furthermore, EDL is categorically NOT a traction control system (traction control applies the brakes to both wheels on a driven axle simultaneously, and/or electronically reduces engine output - EDL does not reduce engine output, and only brakes one wheel on a driven axle).  Please try reading the article more carefully, thanks -- Teutonic_Tamer (talk to Teutonic_Tamer) 08:29, 15 June 2008 (UTC)

text: I'm sorry but you are factually WRONG.  As an Automotive Engineer, with a keen interest in vehicle dynamics, I can assure you that traction control and EDL are operate in two very different methods.  All traction control systems monitor differential axle wheel speeds comparing the driven axle to the non-driven axle - any differences outside the scope of the allowed tollerances will ONLY result in either (a) BOTH driven wheels on the same axle being braked, or (b) the engine ECU reducing engine output, or (c) a combination of (a) and (b).  EDL does NOT compare differences between front and rear axles, it ONLY compares differences between the left and right wheels on the same axle, and brakes just ONE wheel, there is NO engine power intervention.  Whilst they are both "add-on" functions of modern ESP systems, and use the same related hardware and electronics, the software control of the two different systems are distinctly separate, and help moderate/control different aspects of vehicle dynamics.  Don't forget, Wikipedia articles are not considered valid references for other Wikipedia articles, so if you have read something contrary on another Wiki article, it doesn't automatically mean it is correct! -- Teutonic_Tamer (talk to Teutonic_Tamer) 12:52, 15 June 2008 (UTC)

text: I have to agree with Tamer here. EDL and ASR (Traction control) are all part of ESP but work in different conditions and in a different way. In this article we talk about EDL. ASR EDL --Zello (talk) 08:14, 4 July 2008 (UTC)
thread_title: EDL

message: So how isn't this AWD? Its full-time 4WD, isn't it? Isn't that the definition of AWD? --70.89.189.78 (talk) 21:35, 24 August 2010 (UTC)
replies: text: Yes, it's AWD rather than 4WD. It should be renamed, both the article title and the links within it. Andy Dingley (talk) 15:28, 28 September 2010 (UTC)
thread_title: 4WD vs AWD?

message: I added a citation needed tag to the statement that the torque vectoring system is developed by audi. Several sources on the web claim this is a magna system.  — Preceding unsigned comment added by 163.157.254.25 (talk) 15:18, 19 December 2012 (UTC)
replies: text: I changed it to Magna with an added source. Johannesvg (talk) 10:23, 7 January 2013 (UTC)
thread_title:  development Torque Vectoring System 

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thread_title:  External links modified