Talk:Regenerative braking

message: > New York City subways are about to see this installed.
: What is meant with "this" - 'regenerative braking' or 'large banks of resistors' ? 213.51.209.230 13:32, 21 Aug 2004 (UTC)
thread_title: NYC

message: Among confusions about the hybrid cars, many seem to believe that hybrid is mainly to allows regenerative breaking ? It is not. Hybrid is one way to avoid the lost of efficiency of powerful piston gas engine when running at low power, the Quasiturbine photo-detonation engine being one other possibility. Regenerative braking energy recovery is insignificant on the highway, little when the battery are near fully charge, limited to soft breaking (heavy breaking exceeding recovery power capability), and none for now from the back wheels (still waste energy to standard friction brakes) http://www.hybridcars.com/renerative-braking.html . It is however valuable in intense city driving, and is also of course an asset of most hybrid concepts. Regenerative braking system can also exist independanty from hybrid. City driving car energy use is shown at : http://www.fueleconomy.gov/feg/atv.shtml Gilles
:: I would have thought that was obvious.. ? But regenerative breaks are easier (cheaper) to impliment in vehicals that are normally driven from a source of electricity (rather than gasoline or something) - IE hybrids or electric cars. Of course, if one made the ability for a gasoline car to be run by a battery then it could use regenerative brakes - but it would become a hybrid in the process. Regenerative brakes could be used to charge a car's battery (which isn't used for propulsion), as the braking energy is simply energy that can be used anywhere. Maybe note of this needs to be made in the article. Fresheneesz 20:00, 30 May 2006 (UTC)
thread_title: Relation with hybrid

message: 1: i was under the impression that rehostatic breaking rather than friction breaking was used if there was nowhere to put the regenerated power.
2: i presume deisel electrics still generally rely on rehostatic breaking (though i've heared a few are now using batteries) is this correct?
:# Primary train brakes are almost universally air brakes (occasionally electropneumatic). These are of course friction brakes.
:# Locomotives universally (except for very early on) have friction brakes on their wheels.  Normally straight air brakes, although steam brakes were often used on steam locomotives.  N.B. The term for locomotive brakes is "independent brake" (said brakes can be controlled independently of the automatic or train brakes). BDD 
:# The vast majority of electric and diesel-electric locomotives have rheostatic braking available as well. (this is "dynamic braking" in US railroad parlance).  Railroaders like this because it does not wear or heat up the friction brakes, and applying more braking from the locomotive causes the train's slack to bunch up, allowing for an easier time once a rise is encountered again.
:# A small number of electric locomotives have regenerative braking.  This generally requires direct current electrification; alternating-current regenerative braking requires the locomotive's generation to be 'in phase' with the supply.
Hope that helps. Matthew Brown (Morven) (T:C) 23:23, 7 May 2006 (UTC)
thread_title:  a couple of train related questions 

message: Dynamic brakes should probably get their own section, since theres significant discussion about them - and as of right now, the explantion and definition are badly placed. Fresheneesz 20:00, 30 May 2006 (UTC)
thread_title:  dynamic brakes

message: This article currently has no sources for its information, so I've tagged it as . We need these not only to back up the statements made but to expand on them to provide some details. For instance, there is no real information about how regenerative brakes came to be. The article currently says they are "descended from dynamic brakes", but there is no separate article on the latter. The earliest date is a vague "mid-20th century", by which time the ancestors of these brakes were already implemented in trains, etc. Clearly there must have been more history than this. Does anyone have some sources for these details? Thanks. ~ Jeff Q (talk) 09:20, 10 June 2006 (UTC)
thread_title:  References needed 

message: I think the current regen braking article is cluttered and somewhat disorganized.  References to dynamic braking should be eliminated, as they are not germane to the article (except clarification should be kept to indicate that dynamic and regenerative braking are not the same). Bigdumbdinosaur 17:06, 18 February 2007 (UTC)
thread_title: Clutter

message: So this is kinda like down shifting in a car and using the transmission to slow down? HeadMouse 11:47, 14 May 2007 (UTC)
replies: text: Only in the sense that the passengers experience a similar sensation as compression brakeing.  Though regenerative braking is far better in that you get to keep the energy such that you can use it again later.  It's also much quieter. --D0li0 08:58, 15 May 2007 (UTC)

text: Yes, downshifting is a form of flywheel kinetic energy conservation, but the engine+flywheel cannot store much energy (momentum) because is has a small inertia. Also, the friction in the engine causes the energy to dissipate in just a few seconds. --MasterHD (talk) 20:22, 3 October 2008 (UTC)
thread_title:  Kinda Like 

message: This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 16:31, 31 August 2007 (UTC)
thread_title:  WikiProject class rating

message: The article says "KERS simply transfers the kinetic energy to a flywheel in the F1 car’s transmission when the driver presses a “boost” button." I am fairly certain this is the wrong way around, the energy is released from the flywheel when the driver presses boost. Any objections to changing it? Abhi.mittal (talk) 13:35, 17 May 2008 (UTC)
thread_title: F1 KERS

message: Is it possible to recharge an electric car with regenerative brakes while being towed by riding the brakes ever so slightly not to engage the friction brakes? Towel401 (talk) 18:08, 30 June 2008 (UTC)
thread_title:  Regenerative braking and towed vehicles 

message: Hi i removed this statement "The Honda Racing F1 Team became the first team to introduce and test a development F1 KERS system on track in May of 2008" it needs a cite and is wrong anyway, Mclaren introduced KERS in to Forumula one back in the 90's, but it was banned.  —Preceding unsigned comment added by 62.173.86.208 (talk) 17:31, 8 July 2008 (UTC)
thread_title:  Honda 

message: The system uses 400V, 200A circuitry... according to the F1 Australia 2009 pre-race show on SPEED. 76.66.193.69 (talk) 05:56, 29 March 2009 (UTC)
thread_title:  KERS 

message: From the article:
: An early example of this system was the Energy Regeneration Brake, developed in 1967...
Try ca 1908 - Krieger Electric Carriage - also petrol/electric hybrids !
--195.137.93.171 (talk) 21:08, 13 April 2009 (UTC)
replies: text: Outstanding information! It is now added to the article. Thanks for the reference! —CZmarlin (talk) 22:25, 13 April 2009 (UTC)
thread_title:  History 

message: disagrees with this article in that it says dynamic braking can be regenerative. Only one of them can be correct. Betaben (talk) 11:53, 28 July 2009 (UTC)
thread_title:  Dynamic braking link 

message: It says here:
"Vodafone McLaren Mercedes became the first team to win a F1 GP using a KERS equipped car when Lewis Hamilton won the Hungarian Grand Prix July 26th 2009. Their second KERS equipped car finished fifth."
Surely, it is more important to note that first and second place were both KERS cars, rather than just note that the second car of a specific team came 5th. After all, this is an article about how well KERS works, not how well the team did. Betaben (talk) 11:56, 28 July 2009 (UTC)
thread_title:  Importance of second place in Hungarian GP 2009 

message: "In November 2008 it was announced that Freescale Semiconductor would collaborate with McLaren Electronic Systems to further develop its KERS for McLaren's Formula One car from 2010 onwards. Both parties believed this collaboration would improve McLaren's KERS system and help the system filter down to road car technology".  this is old news as 2010 KERS is out.  Also under Car Manufactures not relevant.  Suggest a separate article for KERS in F1.--Mrebus (talk) 17:14, 30 July 2009 (UTC)
thread_title: Car Manufactures

message: Designers of The Very Light Car discussed their design on public radio, giving a 30% figure for either RB efficiency, or overall savings from RB -- but it was not clear if the base was overall fuel consumption or pre-braking momentum! It would be good for the article to include some verifiably typical #s for
# % RB savings on whole-trip energy (for urban and highway)
# efficiency of conversion of battery-charge to momentum, and of RB conversion back, for 
## for representative speeds, and 
## for accelerations that are 
### very gradual, 
### typical for, e.g., drivers whose median accelerations put them at 24th, 49th, or 74th-percentile respectively, and 
### maxiumum.
--Jerzy•t 21:08, 17 September 2010 (UTC)
thread_title:  How about some numbers? 

message: I've taken the liberty of rewording the introduction. The fourth sentence was grammatically and syntactically incorrect (possibly due to an incomplete edit?), and the first paragraph repeated a couple of statements. I felt it was possible to say this more clearly and in fewer words. I've also changed the wikilink at compressed air to point at the more specific Compressed air energy storage article, since the flywheel wikilink similarly points to the article on flywheel energy storage rather than flywheels in general (IIRC this is WP policy anyway). No toes trodden on, I hope? RedGreenInBlue (talk) 14:29, 28 October 2010 (UTC)
thread_title:  Rewording introduction 

message: Does anybody here have contacts that can provide a "way in" to somewhere like Bosch? I'm in Germany already. I don't have the time or resources to prototype and patent my idea myself, but I would like to see if I've got something here. Email me on wbraveheartw@gmail.com if interested.  —Preceding unsigned comment added by 84.155.216.235 (talk) 10:13, 11 January 2011 (UTC)
thread_title:  I've devised a significant improvement to regenerative braking 

message: Sorry if this is a stupid question.  This article mainly focuses on conventional rotary motors (understandably, as they are used by most railways in the world), but is regenerative braking also possible with linear induction motors?
JaneStillman (talk) 20:24, 16 March 2012 (UTC)
thread_title:  RB in linear motors 

message: I reorganised this article into a section on general principles, one on conversion to electric energy (copied most of the text into that) and one on mechanical energy.  As suggested above, a lot of non-electric topics could go into that last section.  I made the KERS stuff part of this, but I think it contains too much detail which deserves its own page (Kinetic energy recovery system): I propose replacing this section with a short summary and leaving the 'Main article: ...' link.
Now just adding a small example of flywheel application... --StevenDH (talk) 19:23, 23 November 2012 (UTC)
thread_title:  Reorganisation 

message: This section in the article appears to be mistitled; it does not have any information on thermodynamics.
Unless the braking system is capturing and using heat, any technical information on energy capture/conversion/use should be discussed in relevant terms, e.g.: kinetic forms (mechanical) and potential forms (electric).  — Preceding unsigned comment added by Pf416 (talk • contribs) 13:10, 11 March 2014 (UTC)
thread_title:  Thermodynamics 

message: Hello fellow Wikipedians,
I have just added archive links to  on Regenerative brake. Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive https://web.archive.org/20090226201221/http://economictimes.indiatimes.com:80/Earth/Delhi-Metro-Cuts-90000-tons-of-CO2/articleshow/4176147.cms to http://economictimes.indiatimes.com/Earth/Delhi-Metro-Cuts-90000-tons-of-CO2/articleshow/4176147.cms
*Added archive https://web.archive.org/20081014225121/http://www.torotrak.com:80/IVT/works/ to http://www.torotrak.com/IVT/works/
When you have finished reviewing my changes, please set the checked parameter below to true to let others know.
Cheers. —cyberbot IITalk to my owner:Online 03:39, 18 October 2015 (UTC)
thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified 7 external links on Regenerative brake. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20110516084534/http://www.xtrac.com/pdfs/Torotrak_Xtrac_CVT.pdf to http://www.xtrac.com/pdfs/Torotrak_Xtrac_CVT.pdf
*Added archive https://web.archive.org/web/20081228022048/http://www.fia.com/en-GB/mediacentre/pressreleases/mobility/2008/Pages/f1_environment.aspx to http://www.fia.com/en-GB/mediacentre/pressreleases/mobility/2008/Pages/f1_environment.aspx
*Added archive https://web.archive.org/web/20080625190106/http://www.fia.com/resources/documents/1151088479__2009_F1_TECHNICAL_REGULATIONS.pdf to http://www.fia.com/resources/documents/1151088479__2009_F1_TECHNICAL_REGULATIONS.pdf
*Added archive https://web.archive.org/web/20080625190106/http://www.fia.com/resources/documents/1151088479__2009_F1_TECHNICAL_REGULATIONS.pdf to http://www.fia.com/resources/documents/1151088479__2009_F1_TECHNICAL_REGULATIONS.pdf
*Added archive https://web.archive.org/web/20090113183348/http://www.racecar-engineering.com/news/people/273697/peugeot-reveal-hybrid-racer-for-2009.html to http://www.racecar-engineering.com/news/people/273697/peugeot-reveal-hybrid-racer-for-2009.html
*Added archive https://web.archive.org/web/20080922221623/http://www.racecar-engineering.com/news/people/274178/mclaren-on-track-with-kers.html to http://www.racecar-engineering.com/news/people/274178/mclaren-on-track-with-kers.html
*Added archive https://web.archive.org/web/20090113183348/http://www.racecar-engineering.com/news/people/273697/peugeot-reveal-hybrid-racer-for-2009.html to http://www.racecar-engineering.com/news/people/273697/peugeot-reveal-hybrid-racer-for-2009.html
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
Cheers.—InternetArchiveBot (Report bug) 05:18, 22 January 2018 (UTC)
thread_title:  External links modified (January 2018) 

message: :The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion. 
The result of the move request was: moved per request.  Favonian (talk) 17:19, 8 May 2022 (UTC)
replies: text: Regenerative brake →  – For some reason I feel 'regenerative braking' sounds better, while 'regenerative brake' sounds wrong and also seems to be much less used. Both sound like a verb to me, but I might be wrong. Sauer202 (talk) 16:41, 1 May 2022 (UTC)

text: *Support. Regenerative braking is better because it represents the lede, which starts with "Regenerative braking is...". "Regenerative brake" also sounds wrong in my opinion, although take this with a grain of salt because I'm not a native speaker. Klrfl Talk! 14:17, 8 May 2022 (UTC)
thread_title:  Requested move 1 May 2022