|
||||||||||
|
||||||||||
21 Jun 2012, 13:12 (Ref:3095937) | #3601 | |
Veteran
Join Date: Mar 2004
Posts: 8,738
|
A cool animated video about the Audi R18 e-tron quattro: http://www.youtube.com/watch?v=4wEbQj1Mr18
It highlights the hybrid system and explains the different air flows (engine air intake, engine cooling, braking cooling, cockpit cooling, ...). |
|
|
21 Jun 2012, 14:22 (Ref:3095980) | #3602 | |
Veteran
Join Date: Dec 2011
Posts: 5,148
|
As awkard as it it. I think Audi isn't really complaining that Fasller made the mistakes he did at Le Mans. It makes it easier to put Lotterer and Treluyer in the car for the rest of WEC...Before there wans;t really any dirt on fassler and not much of a reason to pull him out of the #1 car for WEC other than to simply tell him we want Ben in the car not you. But now it looks like Ben-Andre duo is a go...They're sitting pretty for WEC. If McNish Kristensen and Capello think they are a trio then Andre-Ben is an even tighter duo despite having not driven that much together ouside of Le Mans and Sebring.
|
|
|
21 Jun 2012, 18:44 (Ref:3096073) | #3603 | |
Veteran
Join Date: Jan 2008
Posts: 2,348
|
||
__________________
When Henry Ford II wanted to kick Enzo Ferrariās ass he did not instruct his minions to build a Formula 1 car. |
21 Jun 2012, 20:09 (Ref:3096104) | #3604 | ||
Veteran
Join Date: Oct 2007
Posts: 908
|
Tribute to Dindo Capello, after great years with Audi at Le Mans.
Grazie Dindo: Fourteen great years with Audi at Le Mans |
||
|
21 Jun 2012, 23:03 (Ref:3096170) | #3605 | ||
Veteran
Join Date: Dec 2006
Posts: 8,923
|
I think that Andre and Ben are a bit faster than Marcel is, and the only real mistake that he made was the spin in the Porsche Curves--the off at Mulsanne was avoiding a Corvette that spun in front of him. Granted, that damaged the car and lead to the tail being changed, but much of that damage was probably done in the earlier spin.
I do have to say that Audi may've made the R18 a bit more durable as far as the bodywork goes, because it seems that the knock in the Porsche Curves would've done more damage on a 2011 car. However, it doesn't seem to be a ton more durable, considering the ease of which Dumas broke the front fenders and front diffuser off of his car after he hit the tire wall (both in the accident and his attempts to clear the bodywork away from the tires), but the 908 last year was similarly frail. But back to Andre and Ben--they're Audi's best chance at the WEC drivers' title, as they've been fast and consistent, and have made very few mistakes. Of course, they have a friendship a camaraderie similar to what Allan and Dindo have. Also, one of the reasons why Audi hired Loic Duval is because Andre and Ben have a close friendship with him, and he's of the same mold--insanely fast, great in traffic, and makes few if any mistakes. I do think that those guys are almost like a clone of Allan, Tom, and Dindo when they were in their prime, and being, fairly young, they have quite a few years left at Audi if they choose to stay there, which they probably will--Andre and Ben probably have multi-year contracts, and Duval is probably just a signature away from one himself. |
||
|
21 Jun 2012, 23:51 (Ref:3096180) | #3606 | |
Veteran
Join Date: Mar 2004
Posts: 8,738
|
An video interview with Ulrich Baretzky about the Audi and Toyota hybrid systems, the 2014 rules and the Nissan Delta Wing: http://www.youtube.com/watch?v=8IA3UxqNvIw
As always, it is very exciting to listen to Baretzky. This time he is fiercely defending Audi's hybrid system. |
|
|
22 Jun 2012, 02:03 (Ref:3096190) | #3607 | ||
Veteran
Join Date: Dec 2006
Posts: 8,923
|
I do think that there might be away around the drive shafts for the e-tron: Audi's post LM press release mentions something about electrical cables replacing the drive shafts on the production cars.
Not sure how practical this would be on the race cars, though. |
||
|
22 Jun 2012, 06:35 (Ref:3096234) | #3608 | |
Veteran
Join Date: Mar 2004
Posts: 8,738
|
Not practical at all. They would have to put a 75 kW electric motor in both front wheels. That is going to very bulky and possibly impossible with current technology. Furthermore, that will be terrible for handling because of the heavily increased unspung weight.
|
|
|
25 Jun 2012, 14:00 (Ref:3097781) | #3609 | ||
Veteran
Join Date: Mar 2004
Posts: 8,738
|
Even though Audi did more laps than last year (because of less/shorter safety car periods), the (average) fuel consumption went down with 10%.
Quote:
In http://tentenths.com/forum/showthrea...65#post2928965 I once calculated the amount of diesel that Audi used for their Le Mans victories.
Last edited by gwyllion; 25 Jun 2012 at 14:27. |
||
|
25 Jun 2012, 14:09 (Ref:3097783) | #3610 | ||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
so with a lap length of 13.624 km, this boils down to 4.54 liter per lap on average. 2014 allocation for diesels will be ranging from 3.93 liter per lap with 2mj hybrid assistance to 3.56 l/lap for 8 mj hybrid assistance, so the Audi people need to find another 15% reduction at least....
|
||
__________________
pieter melissen |
25 Jun 2012, 14:54 (Ref:3097807) | #3611 | ||
Veteran
Join Date: Aug 2004
Posts: 3,834
|
The ACO document implies manufacturers were involved in writing the new rules, so I guess they think they can do that...
|
||
__________________
Tim Yorath Ecurie Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch Fan of "the sacred monster Christophe Bouchut"... |
25 Jun 2012, 14:57 (Ref:3097811) | #3612 | ||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
|||
__________________
pieter melissen |
25 Jun 2012, 15:01 (Ref:3097813) | #3613 | |||
Veteran
Join Date: May 2008
Posts: 6,654
|
Quote:
|
|||
__________________
Hvil i Fred Allan. (Rest in Peace Allan) |
25 Jun 2012, 15:05 (Ref:3097814) | #3614 | ||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
|||
__________________
pieter melissen |
25 Jun 2012, 15:41 (Ref:3097835) | #3615 | |||
Veteran
Join Date: Mar 2004
Posts: 8,738
|
Quote:
Quote:
The 2014 rules talk about upto 8 MJ hybrid energy per lap, whereas current rules talk about 0.5 MJ per braking zone. For 2012 the ACO/FIA defines 7 braking zones in Le Mans, so in paper 3.5 MJ hybrid energy can already be released per lap. So 8 MJ is only a bit more than twice as much of what Audi and Toyota have now. Last edited by gwyllion; 25 Jun 2012 at 15:48. |
|||
|
25 Jun 2012, 15:48 (Ref:3097842) | #3616 | ||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
I actually wanted to know whether Audi has provided figures about the fuel consumption of the Ultra, not about the tank capacity, but can I take it that with a similar amount of stops, the Ultra is therefore 3% less frugal than the e-tron? Comparison might be difficult, because the Ultras did a lot to get out of sync...
|
||
__________________
pieter melissen |
25 Jun 2012, 16:00 (Ref:3097849) | #3617 | |
Veteran
Join Date: Mar 2004
Posts: 8,738
|
The #4 ultra did 375 laps (5110.87 km) and the #1 e-tron quattro 378 laps (5151.76 km). That is a difference in distance of less 1%.
The #4 ultra (32 stops) did one pitstop less than the #1 e-tron quattro (33 stops). That is a difference of around 3%, exactly the difference in fuel tank capacity. So both cars probably used a similar amount of diesel, but the hybrid went 1% further. |
|
|
25 Jun 2012, 16:34 (Ref:3097866) | #3618 | |||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
Quote:
|
|||
__________________
pieter melissen |
25 Jun 2012, 18:34 (Ref:3097920) | #3619 | |
Veteran
Join Date: Oct 2006
Posts: 626
|
Excellent fuel economy considering the performance of the R18. Audi found a huge amount of fuel economy over last year considering that there was half the safety car period.
The hybrid system probably provides 0% extra fuel economy as I don't think that the diesel is running any less than 100% full load when the drivers floor it out of the corner. The only way that it would provide any benefit is if the E-tron driver uses 90% of the engine power out of the same corner where the Ultra driver would be using full engine power. Anyone know if the E-tron drivers did anything like that? With the E-tron powering the front wheels traction isn't an issue so I don't think that the Audi hybrid system ever works like traction control and limits the diesel when the electric motor in working. |
|
|
25 Jun 2012, 19:07 (Ref:3097944) | #3620 | ||
Veteran
Join Date: Apr 2012
Posts: 723
|
Ullrich stated that they use the hybrid as an extra power, not to save fuel.
|
||
|
25 Jun 2012, 19:09 (Ref:3097945) | #3621 | ||
Veteran
Join Date: Mar 2004
Posts: 8,738
|
Quote:
Like chewymonster said, the hybrid system is probably not used to used to save fuel. I remember that the drivers of the hybrid Audi might have to use some fuel saving tricks in order to do 12 lap stints (i.e., go off throttle earlier before braking such that the hybrid system is charged completely). |
||
|
25 Jun 2012, 19:16 (Ref:3097950) | #3622 | |||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
Quote:
|
|||
__________________
pieter melissen |
25 Jun 2012, 19:45 (Ref:3097977) | #3623 | |
Rookie
Join Date: Mar 2011
Posts: 96
|
We must not forget that at the beginning of the race num. 4 car was also tucked away in the Audi pit (see how much time, see data, but I think lost a lap), because Mike Rockenfeller reported a problem "something in the rear (vibration in rear)." And number 4 had problem with the gearbox, which of course it could also occur in fuel consumption.
|
|
|
25 Jun 2012, 19:57 (Ref:3097993) | #3624 | |
Rookie
Join Date: Mar 2011
Posts: 96
|
BTW last time when I saw the report on the Audi's 33-liter fuel consumption occured me that: What about Peugeot? It would perhaps Peugeot be able to do 13 lap fuel stint with hybrid or normal car this year? We have to admin , Peugeot was not bad at all for that. According to the Audi numbers last year, yeah we do not have real Peugeot numbers from Peugeot Sport, but Pug was better fuel consumption at all with number 9 car (same laps, only few seconds behind, and endurance). The engine had more power, fuel consumption were great. Only the front aero was a problem just a bit. :-)
(But yes, 908 have less downforce, it was more flat out.) |
|
|
25 Jun 2012, 19:58 (Ref:3097994) | #3625 | |||
Veteran
Join Date: Sep 2003
Posts: 2,129
|
Quote:
My point is that the E-trons were not significantly faster than the Ultras, and at the same time seem to have had about the same fuel consumption. I can understand why audi does not seem to be inclined to reveal the mileage of the Ultras, because the marketing machine runs for the hybrid. Yet, it remains to be seen whether it is worth the effort, certainly also in the light of some comments above which clearly imply that hybrid is not intended for fuel saving in the audi book. |
|||
__________________
pieter melissen |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[WEC] Porsche Prototype Discussion | Simmi | North American Racing | 9284 | 18 Sep 2024 14:24 |
[WEC] Toyota LMP1 Discussion | Gingers4Justice | ACO Regulated Series | 6771 | 18 Aug 2020 09:37 |
Nissan LMP1 Discussion | Gingers4Justice | Sportscar & GT Racing | 5568 | 17 Feb 2016 23:22 |
How about a LMP1 Pro & LMP1 Privateer class | Holt | Sportscar & GT Racing | 35 | 6 Jun 2012 13:44 |
[LM24 Race] Audi LMP1 Poster all art deco'd. | blackohio | ACO Regulated Series | 2 | 27 Oct 2011 06:30 |