https://safirsoft.com How does the Le Mans hydrogen race form?

In preparation for the hydrogen array, Le Mans saw periods of prototyping. Gas station Every now and then, people in blue "Mission H24" T-shirts would drive to a meeting on a motorcycle sitting next to a tent.

One of them was François Grant of the French-Swiss company GreenGT. He seemed very excited because on the eve of this year's race, ACO (Automobile Club de l'Ouest), which runs Le Mans 24 Hours, announced a new batch of race cars at the Le Mans event from 2025: a sample of the first hydrogen - centering electric elements from their former forces in that tent. “In partnership with ACO, we help define sporting and technical regulations for the new class,” Grant says. In the days leading up to this year's race, he ran a test at Lehman and ran a 13.6-kilometre (8.5 mile) run before the start of Saturday afternoon. "The data from these tests will help us understand and improve the performance of the car, which is the basis for organizing the new class," he said.

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Le Mans' recent winner Stephen Richelieu was one of the drivers to beat the H24 during the weekend's testing. Richelmy, who won the LMP2 24 Hour class race in 2016, says he was impressed with the power of the hydrogen engine. "Since this is new technology and doesn't use petrol or diesel, I expected this car to have lower torque and maximum top speed. But it does provide more torque than a petrol engine, and even without high compression, the car easily" 280 km/h (174 miles). per hour) on the right "." Src = "https://safirsoft.com/picsbody/2109/10266-1.jpg" alt = "https://safirsoft.com" Zoom in/out/ Stephen Richelieu and the hydrogen car that drove him from Lehman. Danhanjay Khadilkar

A 32-year-old driver from Monaco said driving for the first time seemed a bit strange. "It reminded me of my karting days," he says. "There are engines, brakes, accelerator pedals, steering but no gearbox, which is usually a big part of a race car." Fuel cell stacks use hydrogen and oxygen to generate electricity, most of which goes directly into the engine. But part of it is battery powered, which is used for faster acceleration, as when going out of a corner.

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According to Richley, his role is to "feel" the car on the right track and give that information to the engineers. "Engineers see a lot of things through data and simulation. But as a driver, you get the real feel of the car. My job is to tell the engineers that in some cases, while everything is possible on a computer." That sounds good, it might not be. He's on track.” During the tests, the car was filled with high-pressure hydrogen at a refueling station developed by TotalEnergies. “While we kept the pressure at 400 bar for tests, the tanks can hold hydrogen up to 700 bar,” Grant explains. The higher the pressure, the more hydrogen, which means more autonomy." Le Mans used 800 grams of hydrogen on one lap of the car.

Although the tests were encouraging, there are many obstacles that can be overcome. The first challenge is losing weight. At 1,400kg, he said, the H24 is still 450kg heavier than the LMP3 and 155kg heavier than the GT3. But since this is a raw prototype, we can work on any part of it and try."

François Grant with the H24 prototype. For the GreenGT, the H24 project coexists with hydrogen trucks he developed for Heavy Industries. 44 tons (48.5 tons) of 450 kilometers (280 miles) coverage on a single charge.” We bring technologies from trucks to race cars and back. Although the goals of the race car and truck are different, we're starting to have a lot in common with propulsion technology. Interestingly, the power output of the H24 engines and our engine trucks are more or less the same. "

According to Grant, it's important to optimize energy and consume less hydrogen, and you may benefit from things like improved humidity when oxygen enters the fuel cell. This type of setup is common to both projects. Grant also discusses the benefits of using power stations Hydrogen power generation.” The electric motor is more efficient than a conventional four-stroke engine. More importantly, it is clean energy because it only emits water vapor. In addition, we also use green hydrogen, which is produced from non-polluting sources. He says.

Danjani Khedilkar is a journalist based in Paris.

How does the Le Mans hydrogen race form?
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