It is a best time (maybe) for eternity that Timo Bernhard burned into the asphalt of the Nordschleife on June 29, 2018: the clock stopped at 5: 19.55, putting Stefan Bellof's previous record by just under Undercut by 50 seconds. BUT: it was a lap with a specially built car, an evolutionary stage of the Porsche 919 Hybrid, the car that already caused a sensation at Le Mans. Stefan Bellof drove the 6:11 in a Porsche 956 to a sports car race during normal training.
The fascination of the 919 lap is perhaps that the limit here set the driver's ability to react, or more precisely: that the interaction between man and machine was pushed to the maximum. How the round came about, what preparations were necessary, how long it took Timo after the round to find words for it and what Stefan Bellof's father said to him on the phone afterwards, you can find out in this video.
Some data about the record car:
Monocoque: composite fiber construction made of carbon fibers with an aluminum honeycomb core. The cockpit is closed.
Combustion engine: V-four-cylinder engine (90 degree bank angle) with turbocharging, four valves per cylinder, DOHC, a Garrett turbocharger, gasoline direct injection, fully load-bearing aluminum cylinder crankcase, dry sump lubrication
Maximum speed: ≈ 9,000 / min
Engine management: Bosch MS5
Displacement: 2,000 cm3 (V4 engine)
Power: Combustion engine: 720 PS rear axle (500 PS)
MGU: 440 PS front axle (400 PS)
Hybrid system: KERS with motor generator unit (MGU) on the front axle, ERS for the recovery of exhaust gas energy. Storage in liquid-cooled lithium-ion battery packs with cells from A123 Systems
Drive: rear-wheel drive, traction control (ASR), temporary all-wheel drive via boost via electric motor on the front axle, sequential, hydraulically operated seven-speed racing transmission
Chassis: Front and rear independent suspension, pushrod system with adjustable shock absorbers and pitch link system with active locking system (no active system in the WEC version of the 919)
Brake system: wheel-specific brake-by-wire system (front-rear axle brake-by-wire system), monoblock light-alloy brake calipers, ventilated carbon fiber brake discs front and rear.
Variable wheel torque control to optimize the vehicle balance (braking torque distribution can be set for each axle)
Wheels and tires: Forged magnesium 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
Tank size: 62.3 l
Cover photo: © Dr. Ing.h.c. F. Porsche AG
5 янв 2021
