Quote:
Originally Posted by gwyllion
For 2011 the hybrid rules will change slightly. See http://www.lemans.org/en/news/2011-L...TIONS_628.html for the main ideas. Only 500 kJ instead of 1000 kJ between braking points and the KERS energy can also be released on the front wheels (like the hybrid 911), but not on both axles.
I don't understand your calculation. Energy = power x time. It is up to Peugeot to decide how to release the 500 kJ of KERS energy. 500 kW (670 hp) during 1 s, 150 kW (201 hp) during 3.33 s, 50 kW (67 hp) during 10 s, 25 kW (34 hp) during 20 s, ...
To give an idea the Peugeot 908HY had a 60 kW electric motor and the Zytek Performance Hybrid system uses a 40 kW electric motor. The Porsche 911 GT3R Hybrid has 2 60 kW electric motors, which can release KERS energy "during approximately 6-8 s"; so around 1000 kJ can be stored in the flywheel battery.
As a final comparison, the hybrid Toyota Supra HV-R that won the Tokashi 24-Hour race in 2007, had 2 10 kW (in-wheel) electric motors on the front and a 150 kW rear axle mounted electric motor. That setup (which is not allowed by the ACO because it drives 3 wheels electrically) would release the 500 kJ in around 3 sec. |
Very good analysis and info... it really gives a perspective... careful!
500KW in 1 second is indeed 500Kj...but for a better perspective would be to do the same but with instantaneous torque(Nm)... because electric motors are not that linear, it could be starting with equivalent of 150hp and never reach those 201hp, for those 500Kw in 4 seconds or more... and electric motors with the same energy consumption can present quite different torque(instantaneous acceleration power) figures.
And i believe La Sathre is special... too long straights, no point in starting in a fury after a chicane or curve and drop even quite before the middle... that was the point i was trying to make last time.. with info(posts erased?)... it might be that 90x is not an hybrid "per see" after all, more so because then it will have 10l more in the tank(way above 500Kj between brake points for more than 12 laps)... energy recuperation can have many uses not only momentousness "acceleration"... who knows?.. anybody?... is it 90x really an hybrid ? (photo stickers say HDi FAP[the same as before] and no "Hy ; H " anywhere)