What You Lot Take Away To Know Near Lmp1 Hybrids Leading Upwards To Le Mans [Video]
The hybridised World Endurance Championship has introduced a novel version of cutting as well as thrust racing that is real entertaining to sentinel but I'm non certain either Jalopnik nor (with respect) the race commentators fully empathize how the real different hybrid systems interact on the track.
The video sequence features a race for seat betwixt the Audi R18 E-Tron Quattro as well as the Porsche 919 Hybrid. While these cars are both inwards the same LMP1 hybrid class, the rules permit for a large total of technical liberty (especially when compared to many other 'control formula' International championships).
The 2015 Audi R18 features a 558 HP (410 kW) 4.0-liter Turbo Diesel V6 combustion engine driving the raise wheels amongst a 272 HP (200 kW) electrical motor driving the front end wheels. The R18 is inwards the four Megajule degree amongst a flywheel issue energy storage organisation that tin forcefulness out shop 700 kilojoules.
The Porsche 919 Hybrid features a 500 Hp (370 kW) 2.0-liter Turbo Petrol V4 combustion engine driving the raise wheels amongst a 400 HP (300 kW) electrical motor driving the front end wheels. The 919 is inwards the 8 Megajule degree amongst an A123 Lithium-ion battery issue energy storage organisation as well as every bit good has thermodynamic issue energy recuperation using the issue energy from exhaust gases from the turbo charger.
The issue energy degree regulations elevate to the total of regenerated issue energy that tin forcefulness out last used each lap, for instance 8 megajoules equals 2.2 kWh that tin forcefulness out last deployed around the race rail (3.6 megajoules is equivalent to 1 kilowatt hr (kWh).
Like inwards Formula One, the issue energy recuperation is pre-programmed as well as non straight controlled past times the drivers. What mightiness last confusing is that dissimilar inwards F1 where output from the KERS systems is driver controlled via a steering bike mounted 'boost' button, inwards the WEC the KERS output is every bit good pre-programmed. In fact KERS 'boost' buttons are banned inwards the WEC.
The hybrid input as well as output tin forcefulness out last collected as well as used anywhere around the rail as well as is calculated past times race engineers pre-race to maximise the piece of occupation of this issue energy for fastest laps times amongst minimal fuel burn. As a result, what we're seeing inwards the video higher upwards where the Porsche 919 is said to last "running out of hybrid power" is inwards fact the same pre-programmed issue energy duty bike used past times the 919 on every laps of the race. This becomes real clear watching extended in-car race footage (the FIA WEC on-line alive TV packet offers in-car photographic television camera access to all plant LMP1 cars over the total race distance).
What nosotros run across every bit the Porsche massively out accelerates the Audi at the top of Eau Rouge is where the Porsche 919 is pre-programmed to apply it's total 8 Mj + 300 kW electrical output to accomplish V-Max inwards the shortest possible time. Some of the battery ability may direct maintain been saved past times a strategy of using solely a pocket-sized flare-up of hybrid ability on the start/finish straight (where the 919 failed to fully transcend the R18), every bit at that topographic point is no braking zone betwixt the hair-pin as well as Eau Rouge, and/or some hybrid issue energy may direct maintain been added from the turbo-generator on the run downward the hill. In either case, the 919 drives this identical issue energy duty bike every unmarried lap. The fact that an Audi was straight ahead as well as running on it's ain unique as well as slightly less powerful hybrid strategy only made the closing charge per unit of measurement during that in-car video footage await real dramatic.
There are other real interesting differences at play such every bit braking performance. Where the Audi (flywheel) as well as Toyota (super capacitor) systems tin forcefulness out recover a 'full charge' during a unmarried high speed braking zone. The Porsche (li-ion battery) has a noticeable extended high speed braking profile, e.g the 919 starts brake regeneration a longer distance earlier the corner, as well as is believed to direct maintain several braking zones to recover a 'full charge'. This is due to the asymmetric accuse as well as discharge curves of lithium ion batteries as well as is partially compensated for past times the thermodynamic turbo generator which makes the Porsche 919 Hybrid the solely machine inwards the champaign that recuperates issue energy non solely when it brakes but every bit good when it accelerates.
Motorsport is a technical sport as well as this is precisely what racing is meant to last about, advancing automotive technology.
