FREE NEWSLETTER

McLaren hybrid Hyper-GT uses motorsport technology to supplement twin-turbo V8

30 April 2020

Following the announcement that the Speedtail – the fastest McLaren ever – had completed high-speed validation tests in the US and reached its maximum speed of 403 km/h (250 mph) more than 30 times, McLaren engineers have been asked one question more than any other: ‘How does Speedtail go that fast?’

The answer is that a combination of attributes, including aerodynamic excellence and low vehicle weight, delivers the hybrid Hyper-GT’s astonishing performance. Fundamental to this is a race-bred electric drive system that incorporates pioneering battery technology to set a new benchmark for hybridised efficiency. This unlocks the Speedtail’s intense acceleration from standstill to 300 km/h (186 mph) in a breathtaking 13 seconds and maximum speed of 403 km/h (250 mph).

The M840TQ powertrain comprises a 4.0-litre internal combustion engine and an electric drive unit, which together develop up to 1,070 ps and maximum torque of 1,150 Nm. The V8 engine features technology that has evolved from McLaren’s first hybrid hypercar, the legendary McLaren P1. A new lightweight air-intake system, improved cylinder head cooling and a revised piston design contribute 757 ps and 800 Nm of ‘traditional’ petrol-powered output to the Speedtail.

The electric motor, which uses Formula E-derived technology, generates more than 230 kW. It gives the Speedtail the highest performance installation ‒ including cooling and integration ‒ of any electric motor currently in use on a production road car. Power delivery is 8.3 kW/kg, which is twice the efficiency of an average sports car.

Engineers from McLaren Applied Technologies ‒ the McLaren Group division that focuses on virtual product development, telemetry, electrification and control ‒ worked with the Speedtail Electric Drive Technology team to integrate its ground-breaking motorsport-developed inverter and DC/DC converter technology into the electric drive system, ensuring the levels of control and power management required for the hybrid Hyper-GT to realise its extraordinary performance.

The high voltage energy storage system is where the Speedtail truly innovates. A high-power cylindrical cell arranged in a unique array, the 1.647 kWh unit is at the cutting edge of battery technology, being extremely compact and delivering the best power-to-weight ratio of any high voltage battery available today. As an indication of how McLaren technology has advanced, the power density of this battery is four times that of the unit in the McLaren P1, providing 5.2 kW/kg and an output of 270 kW.

The design and integration of the battery system enables the Speedtail to achieve its maximum speed by intelligent energy deployment, with these headline figures achievable because the cells are thermally controlled by a dielectrical cooling system and permanently immersed in a lightweight, electrically insulative oil which quickly transfers heat away from the cells. This system, the first of its kind in a production road car, is highly efficient and allows the cells to run harder and for longer.

Partners

Latest issue

FREE Newsletter

Stay up to date and a chance to win 1 Years Subscription*

  • This field is for validation purposes and should be left unchanged.

Latest Tweets

Stay up to date with our social world

RACE TECH magazine @RaceTechmag
29 Sep
Nissan Motorsport unveils the Nissan Z GT4 - https://t.co/92AaFSmcPO
RACE TECH magazine @RaceTechmag
28 Sep
Limited availability so book your tickets now! https://t.co/2RftifsTCN https://t.co/WzMPSOlh7p
RACE TECH magazine @RaceTechmag
21 Sep
F1 announce dates for first Las Vegas Grand Prix #F1 #LasVegas #Formula1 @F1 #LasVegasGP https://t.co/nqqJxgamw4 https://t.co/cBW6K9EEw0
RACE TECH magazine @RaceTechmag
12 Sep
Latet issue of RACE TECH out now. Don't miss: AUDI ENTERS #F1 - Formula 1’s #Sustainability agenda reaped its first… https://t.co/tS71oa5JOg
RACE TECH magazine @RaceTechmag
12 Sep
Your free ticket! Motorsport Engineering & Technology Show - MIA CTS2022 - https://t.co/8KC89BkNtB
RACE TECH magazine @RaceTechmag
8 Sep
Her Majesty The Queen Elizabeth II 1926 - 2022 https://t.co/GkRFlm6PKX
RACE TECH magazine @RaceTechmag
2 Sep
In case you missed it this week - @audisport to enter #F1 in 2026 following new #Sustainability rules #Audihttps://t.co/uIdS6ph1ka
RACE TECH magazine @RaceTechmag
24 Aug
Daniel Ricciardo to leave Mclaren Racing at the end of the year. Watch his video announcement here #danielricciardohttps://t.co/ugPNMC1yfm