Currently, testing cars on Dyno is not a strange thing for car brands or even private garages. This device in recent years has gradually become more popular. However, Bugatti’s Dyno equipment is specially designed to be able to test vehicles at speeds of up to 480 km/h.

This level is only slightly higher than the Chiron’s limited maximum speed of 440 km/h, but even when the car operates at lower speeds, the force generated is still very large. When the car is running at a speed of 420 km/h, the Chiron’s wheels are spinning at more than 50 times per second and exerting a force of about 4,000G on the Dyno system. At this speed, the exhaust valve weighs up to 55 kg according to a statement from Bugatti.

With a tremendous speed and a huge amount of impact force, the team also had to perform a number of other fixed operations to keep the car safely on the dyno. The vehicle must be held in place by 20 high-strength screws on the chassis attached to specially designed mating panels on the monocoque frame. Each plate is then tied to the others with strong criss-cross chains and secured to the dyno floor. The chains must be able to withstand forces of up to 24 tons to keep the vehicle in constant contact with the dyno, avoiding possible unfortunate incidents.

Conventional Dynos are usually designed with about two rollers for each wheel, the wheel will be placed in the middle of the groove for the vehicle to run. However, the DYNO that Bugatti uses is only placed on a single roller, the wheel is adjacent to the top of the roller and all four wheels are applied similarly to be able to measure most accurately. According to Bugatti, this has the effect of reducing slippage, avoiding a situation that leads to loss of wheel performance.

“On the single-roller dynamometer, all components can be tested under real driving conditions in an objective and easy-to-understand way,” said Michael Gericke, Bugatti engine development specialist. The driving resistance forces are similar to the levels that occur under real-world operating conditions on the road.”

The effect of this dyno reflects greatly on the accurate readings and also provides numbers that demonstrate the ability to handle the enormous power of the Bugatti Chiron’s 8.0-liter W16 engine. With advantages such as less skidding and loss of control, less tire heating will allow the team to test the vehicle at higher speeds.
​This dyno system has quite heavy rollers, weighing 3.5 tons and this roller has a rotating mass of about 720 kg. This system also has a maximum braking capacity of 1,609 horsepower. Meanwhile, a giant fan in Bugatti’s testing room can generate about 300,000 cubic meters of air per hour to simulate actual air flowing through the car and provide the necessary air flow for the engine. and cooling system similar to real conditions.

Gericke said: “With these equipment, we can ensure the vehicle’s performance and, above all, safe operation even at the highest speeds. We can also reproduce tests at any time of year and regardless of the weather. This helps us regularly search and research to achieve technical perfection.”

After being tested on the Dyno, the power level measured at the wheel was 1,596 horsepower and torque was 1,600 Nm, a huge number for a car created to operate on the street. According to the initial announcement, the car is equipped with a quad-turbo W16 engine that helps produce up to 1578 horsepower and 1600 Nm of torque. However, on this version, Bugatti has electronically limited the car’s maximum speed to only 440 km/h for general safety reasons.

However, that does not mean that the Chiron Super Sport loses its appeal with its extremely high maximum speed. Bugatti’s engineering team has fine-tuned a number of details such as the suspension system as well as choosing the right type of tire to bring the most comfortable driving feeling possible, increasing the vehicle’s stability but also reducing the considerable manual handling for the driver of the vehicle.

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