How this Bugatti became the first production car ever to break 300-mph barrier

Bugatti Chiron Super Sport 300+1 became the first-ever production car to break the 300-mph (482 kmph) barrier back in August 2019. The hyper sports car managed to cross 304.773 mph (490.484 km/h) precisely which made it the ‘fastest series production car’ in the world. So how did it manage to achieve that? Read on to know.

By: HT Auto Desk
| Updated on: 27 Nov 2021, 13:21 PM
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To break the speed barrier Bugatti also had to push the overall engine output higher to an overall 1600 PS.
To break the speed barrier Bugatti also had to push the overall engine output higher to an overall 1600 PS.

When it comes to achieving speeds as high as 400 kmph or above, increasing horsepower is simply isn't enough or else every Tom, Dick, and Harry would tune a JDM and install massive turbos to get the horses out, but power hike is just a part of the whole process that requires many fine tune modifications to the car’s body, engine, and chassis, to make the car achieve such extreme speeds safely and reliably.

One of the initial steps to cut down wind resistance at high speeds includes optimising the aerodynamics of the car and the company engineers and designers spent months to find the optimum aero balance for the Chiron Super Sport. Which helped them achieve the lowest drag coefficient and the maximum downforce. “Only perfect incoming airflow at the front of the car will keep harmful turbulence at bay and ensure that the airflow around the car stays clean," says Frank Heyl, Deputy Design Director at Bugatti.

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To further cut the turbulence on the sides, the company engineers also installed newly developed air curtains to the car's front, similar to wings. This as per Bugatti, helps move the air around corners in an optimal way (without causing wind resistance).

Also Read : Porsche, Bugatti, Rimac JV officially begins operations: All you need to know

To break the speed barrier Bugatti also had to push the overall engine output higher by 100 PS. Its supermassive 8.0-liter W16-engine pushed out a maximum power output of 1,600 PS, with a higher power plateau at 7,100 rpm, up from 7,050 rpm. This power was backed up with 1600 Nm of peak torque which is available from 2,250 to 7,000 rpm, compared to 6,000 rpm before.

Buggati also introduced more efficient turbocharges to the car for higher engine output. All four turbos were fitted with the bigger compressors that grew in size from 74 to 77 millimeters, to allow for higher throughput. “Despite the increase in performance, the weight of the engine is unaffected, and the response of the turbochargers remains at the same positive level provided by the 1,500 PS engine," says Andreas Kurowski, Engine Development Engineer at Bugatti.

The company also introduced several other modifications such as new gear ratios, updated chassis, lighter rims, and new tyres in order to make the car faster and more stable at extreme speeds.

First Published Date: 27 Nov 2021, 13:19 PM IST
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