Talk:New European Driving Cycle

Comments

Does anyone know what this means?

is there a track wher they drive this cycle for 20 minutes?

Is it straight?

Are there any hills?

What controls are there for wind speed and direction?

Without these questions being addressed, the whole lot seems pointless.

Derek

— Preceding unsigned comment added by 88.110.57.48 (talk • contribs) 23:16, 25 June 2006 (UTC)

Yes, it is a pretty appalling article. "is there a track wher they drive this cycle for 20 minutes?" No, it is done on a dyno. "Is it straight?" Yes "Are there any hills?" No "What controls are there for wind speed and direction?" No wind. The resistance curve of the dyno is set to give the same aero drag and so on as a car running on a flat track in still air. Greg Locock (talk) 10:51, 18 February 2008 (UTC)

Any wikipedia article is constantly in the making... As an answer to Greg, I added an explanation about the test procedure (They make those tests where I work, but I don't do the driving). Since I made those edit for the French version, my English might need some fixing. I'm not sure about how to call the test bench (French "banc à rouleaux"). I also don't know how to call the table (or chart) that matches speed to force at the wheel (in French : "loi de route", litteraly : "road law"). I have some real-life data I'm thinking of using as example, but I would need to alter them since they are supposed to be confidential.--Corentinoger (talk) 11:17, 28 January 2010 (UTC)

That's a lot better. Well done. Greglocock (talk) 11:37, 28 January 2010 (UTC)

There's a link to the "European Universities Debating Championship" on the "Driving cycles" side panel thingy, which I guess is not the page it was meant to link to. Since I'm an absolute n00b at wiki editing I will let the pros fix it. --Gigaherz01 (talk) 00:11, 30 July 2010 (UTC)

The passage ' The transient velocities are much steeper in practice and more dynamic caused by the power surplus of modern engines' - as a criticism of the cycle - is very debatable, and is not really addressed in the cite. Sure - 0-60MPH times have gone from 14-10 seconds.

This somewhat irrelevant in that few drivers actually floor the accelerator every time they accelerate.

A comparison of actual driver accelerations in the 'real world' with the cycle would be valid. --Speedevil (talk) 03:16, 30 July 2010 (UTC)

Is there anywhere any discussion about hybrids and plug-in hybrids? Because the energy stored in the battery could offsett the tests. :Sterremix (talk) 08:32, 30 July 2010 (UTC)

Here's a link to the full NEDC spec and guidelines for performing the test (~ page 70). It should be linked to in the article as it was very hard to find http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CONSLEG:1970L0220:20070101:EN:PDF. Gadgit88 (talk) 19:23, 28 October 2012 (UTC)

Comments

More information about the speedlimit: http://www.europe.org/speedlimits.html 160km/h is just made up. —Preceding unsigned comment added by Erik Kok (talk • contribs) 11:30, 14 March 2010 (UTC)

EUDC link is wrong

EUDC links to some stuff about debating competition. Wrong link. Eregli bob (talk) 08:20, 29 July 2011 (UTC)

Maintenance, expert input

I did some maintenance on the driving cycles pages, but more work needs to be done. Specifically, I added some links to the United States and UNECE regulations that describe the cycle. In these references it is possible to get the actual speed vs. time data, so eventually new graphs can be produced to illustrate the article, as the current graphs are not vectorised.

The article describes the driving cycle, therefore, I do not know if an extensive discussion on how to measure the fuel efficiency or electric consumption is necessary. I think readers would appreciate that an expert (a technician doing these tests him or herself) explains the actual steps done in the industry based on his or her experience, with reference to standards of course, however this would overlap, I presume, the content on the article fuel economy in automobiles.

So, this is what I would like an expert to address:

• Only the driving cycle, or
• Driving cycle and test procedure for fuel consumption
• New graphs for the driving cycles

2001:4CA0:2216:0:CCD2:B6B4:9D27:140E (talk) 11:22, 27 April 2014 (UTC)

Hi, I'm an expert in some areas of the testing, so have begun including information on the other uses of the test cycle (R83). The NEDC cycle, for consistency, is used for quite a lot of the emission tests, not just fuel economy.

I haven't added it yet, but will try to write up a procedure of the parts before this test, specifically the roll down used to set up the loads on the rolling road, that has a huge effect on the results. And add a simplified explanation of the hybrid and electric vehicle testing done with the test.

Stripy42 (talk) 09:30, 25 September 2015 (UTC)

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