F1technical.net

Holm86 wrote:There is missing a top view photo. So the grey lines actually makes sense.

http://i.kinja-img.com/gawker-media/ima ... p69lut.jpg

acosmichippo wrote:

Holm86 wrote:There is missing a top view photo. So the grey lines actually makes sense.

http://i.kinja-img.com/gawker-media/ima ... p69lut.jpg

Ok, that's better, and interesting. Still doesn't look that great from any other angle though.

Published on Mar 4, 2014

Porsche 919 Hybrid: Cutting-edge technology benefits production cars

The exceptional efficiency of the Porsche 919 Hybrid is the result of a carefully balanced overall concept. The sum of all of its individual components forms an effective unit: from the combustion engine to the energy recovery systems, chassis and running gear, aerodynamics and driver ergonomics. The combustion engine is a compact V four-cylinder petrol engine that also serves as a load-bearing member in the chassis. It is a frontrunner of the future-oriented downsizing philosophy features two litres of engine displacement, direct fuel injection and mono-turbocharging, the engine that turns at speeds up to 9000 rpm. The compact engine outputs around 500 hp.

In addition, the Le Mans prototype has two energy recovery systems. Fundamentally new here is a system that recovers thermal energy from exhaust gases via an electric generator driven by the exhaust gas stream. The second hybrid system has the functionality familiar from the 918 Spyder. Here, a generator on the front axle utilises braking phases to convert kinetic energy into electric energy. Lithium-ion batteries serve as the energy storage medium. When the driver needs this energy, an electric motor drives the front axle. This makes the 919 Hybrid an all-wheel drive vehicle temporarily.

agip wrote:Is there a fuel flow restriction here?

Why only 500 hp?

WhiteBlue wrote:There is a per lap fuel flow restriction which comes to 22 g/s if you assume recent lap times. This is more severe than F1, which stands at 27.8 g/s.

Lycoming wrote:

WhiteBlue wrote:There is a per lap fuel flow restriction which comes to 22 g/s if you assume recent lap times. This is more severe than F1, which stands at 27.8 g/s.

Indeed, see appendix b here

http://www.24h-lemans.com/wpphpFichiers ... -lm-p1.pdf

87.3 kg/h to F1's 100 kg/h. Actually, none of the LMP1 classes will have as high a fuel flow rate as the F1 cars. A quick search turned up no mentions, so I presume the fuel flow regs mean they are now doing away with air restrictors.

Holm86 wrote:Pretty interesting stuff around the exhaust. The GU-H is clearly visible. I haven't got a complete overview of the exhaust system yet.

http://www.racecar-engineering.com/wp-c ... pork_0.jpg