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Porsche chooses V8 twin turbo at the heart of LMDh prototype vehicle[F1-Gate .com]

Porsche will fight for the overall victory in the world’s largest endurance race, including Le Mans, Daytona and Sebring, with the new LMDh prototype starting in 2023. This vehicle will participate in the FIA ​​World Endurance Championship (WEC) and the IMSA WeatherTech SportsCar Championship under the team name of “Porsche Penske Motorsport”.

Porsche has started an intensive test program for its race debut in January 2023. The first race will be the 24 Hours of Daytona, the traditional opening round of the IMSA series.

When choosing a combustion engine to complement the standard hybrid elements, as stipulated by regulation, Porsche chose a high-capacity twin-turbo V8 unit. Powerful engines are designed to run on renewable fuels, which can significantly reduce CO2 emissions in the race.

“We had a hard time choosing the engine for the LMDh prototype because the product range offers some promising baseline units,” explained Porsche Motorsport Vice President Thomas Rodenbach.

“We decided on the V8 by turbo, which we believe provides the best combination of performance characteristics, weight, and cost. Kicking off to an active test program was an important step for the project.”

“The rollout of the LMDh racing car was also the first trackout of Porsche Pensky Motorsport. The team worked well together from the beginning,” said Urs Krattle, LMDh General Project Manager at Porsche Motorsport. Shows a high level of professionalism in all areas. After all, the operational requirements for safe driving of hybrid vehicles are very high. In the next outting, the necessary processes and procedures are required. Focusing on digging deeper into the car. During the first test day at Weissach, the V8 Bitabo impressed us in every way. We are confident that we have selected the right unit exactly. “

LMDh vehicle class engine regulations allow great freedom in terms of displacement, design, and number of cylinders. The maximum number of revolutions is 10,000 rpm and the measured pass noise is limited to 110 decibels. The engine weighs at least 180 kilograms, including the air supply and exhaust system and surrounding cooling components. When used, the weight also incorporates a turbocharger that includes air supply cooling.

In line with regulations, the maximum output is between 480 and 520 kW (653 to 707 PS). Within this range, adjustments can also be made within the Balance of Performance (BoP) parameters. It aims to ensure equivalence among all competing LMDh racing cars.

The torque curve is also well defined. In race conditions, the total output of the combustion engine and hybrid drive is 500 kW (680 PS) for the half shaft. Standard components for the regeneration, storage, and supply of electrical energy are supplied by Williams Advanced Engineering (batteries), Bosch (motor generator units and control electronics), and Xtrac (transmissions).

Porsche LMDh V8 Twin Turbo

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Category: Category: F1 / Porsche / WEC (FIA World Endurance Championship) / IMSA WeatherTech SportsCar Championship

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