Porsche 919 Hybrid Destroys Nordschleife lap record
See video below!!
For 35 years and 31 days Bellof’s 6:11.13 minutes record remained uncontested. The German driver from GieBen, who tragically died at Spa-Francorchamps in 1985, counted as the biggest racing talent of his time. He drove his record on May 28 in 1983 at the wheel of a powerful 620 bhp Rothmans Porsche 956 C during practice for the 1000-kilometer WEC sports car race. Also his average speed was over 200 km/h.
The Evo version is based on the 919 Hybrid race car
The Evo version of the Porsche 919 Hybrid is based on the car that took outright victory at the Le Mans 24-Hours and won the FIA World Endurance Championship in 2015, 2016 and 2017. Over the winter, it was freed from some restrictions hitherto determined by the regulations. Thus, its hybrid power train now develops a system output of 1160 hp. The Evo weighs only 849 kilograms and its modified (and now active) aerodynamics generate over 50 per cent more downforce compared to the WEC model. Top speed at the Nurburgring was 369.4 km/h (229.5 mph).
Fritz Enzinger, Vice President LMP1, added: “A big thank you goes to our development team in Weissach and the crew on site for the focused and safe operation of this record attempt. It is terrific what our team has achieved in four years in the World Endurance Championship: From 2015 to 2017 three overall wins in Le Mans and three drivers’ and three manufacturers’ world championship titles. This isn’t easy to be reproduced by anyone. The Tribute Tour is our homage on these years. We didn’t want to see the most innovative race car of its time disappearing unceremoniously in to the museum. Thanks to the support from our partners, we were able to develop the Evo version of the Porsche 919 Hybrid for record attempts.”
Unchained for the record
The technical regulations from the FIA for the WEC and Le Mans, introduced in 2014, successfully delivered close competition between the conceptually very different class 1 Le Mans hybrid prototypes entered by Audi, Porsche and Toyota.
To prepare the 919 Evo record car, the base was the 2017 world championship car. On top came developments that were prepared for the 2018 WEC but never raced after the withdrawal at the end of 2017. Additionally, several aerodynamic modifications were made.
For the Porsche 919 Hybrid Evo the entire hardware of the power train remained untouched. The 919 is powered by a compact two-liter turbo charged V4-cylinder engine and two energy recovery systems – brake energy from the front axle combined with exhaust energy. The combustion engine drives the rear axle while the electro motor boosts the front axle to accelerate the car with four-wheel drive. At the same time it recuperates energy from the exhaust system that otherwise would pass unused in to the atmosphere. The electrical energy that comes from the front brakes and the exhaust system is temporarily stored in a liquid-cooled lithium ion battery.
The WEC efficiency regulations limited the energy from fuel per lap by using a fuel flow meter. The V4 combustion engine’s output back then was around 500 hp. Freed from these restrictions, equipped with an updated software but running the regular race fuel (E20, containing 20 per cent bio ethanol), the Evo version delivers 720 hp.
The engineers also unchained the aerodynamics of the 919 Evo from the regulations. The new larger front diffuser now balances the new and very large rear wing, both of which have actively controlled drag reduction systems (DRS). The hydraulically operated systems trim the trailing edge of the front diffuser and opens up the slot between the rear wing main plane and the flap respectively in order to reduce drag. Underneath the Evo the turning vanes and floor have been optimized. Fixed height side skirts increase the aerodynamic performance again as efficiently as possible. In total the aero modifications resulted in 53 per cent higher downforce and an increase in efficiency by 66 per cent (compared to the 2017 Spa WEC qualifying).
To help further expand the performance envelope, the Evo gained a four-wheel brake-by-wire system to provide additional dynamic yaw control. Furthermore, the power steering was adapted for the higher loads and stronger suspension wishbones (front and rear) were designed.
Compared to the car in conventional race trim, the dry weight was reduced by 39 kilograms to 849 kilograms. To achieve this, air-conditioning, windscreen wiper, several sensors, electronic devices from race control, lights systems and the pneumatic jack system were removed. Michelin developed special tire compounds for the 919 Evo that produces more downforce than a Formula One car.
The “919 Tribute Tour” continues
The attempt at the Nordschleife closes the chapter of chasing records with the Porsche 919 Hybrid Evo. At rather moderate speeds, the top athlete will have several more appearances:
July 6 and 7: VW Fun Cup Spa-Francorchamps (BE)
Technical specifications 919 Hybrid Evo
Monocoque: Composite material structure consisting of carbon fiber with an aluminum honeycomb core. The cockpit is closed.
Combustion engine: V4 engine (90 degree cylinder bank angle), turbocharged, 4 valves per cylinder, DOHC, 1 Garrett turbocharger, direct petrol injection, fully load-bearing aluminum cylinder crank-case, dry sump lubrication
Max. engine speed: ≈ 9,000/min
Engine management: Bosch MS5
Displacement: 2,000 cm3 (V4 engine)
Output: Combustion engine: 720 hp, rear axle (< 500 PS)
Hybrid system: KERS with a motor generator unit (MGU) mounted on the front axle; ERS for recuperation of energy from exhaust gases. Energy storage in a liquid-cooled lithium-ion battery with cells from A123 Systems
Drive system: Rear wheel drive, traction control (ASR), temporary all-wheel drive at the front axle via the electric motor when boosted, hydraulically operated sequential 7-speed racing gearbox
Chassis: Independent front and rear wheel suspension, push-rod layout with adjustable dampers and Pitch Link System with actively controlled lockout system (no actively controlled lockout system in the 919 WEC version)
Brake system: 4-wheel brake-by-wire system (front-rear brake-by-wire sys-tem), monoblock light alloy brake calipers, ventilated carbon fiber brake discs front and rear.
Wheels and tires: Forged magnesium wheel rims from BBS; Michelin Radial tires, front and rear: 310/710-18
Weight: 849 kg (888 kg including driver ballast)
Length: 5,078 mm (4,650 mm)
Width: 1,900 mm
Height: 1,050 mm
Fuel tank capacity: 62.3 liters
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