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Porsche’s main development center in Weissach has new technology that aims to optimize ride comfort by detecting unwanted vibrations, which until now, were impossible to detect. The German premium carmaker recognizes that adaptive suspension plays only a small part of the overall ride comfort and driving experience.
While adaptive suspension systems react extremely quickly to surface changes and can scan the road ahead to predetermine stiffness and rebound rates, Porsche’s new advanced “road simulation bench”, called FaSiP (Fahrbahn-Simulations-Prüfstand), is used to optimize ride comfort even further by eliminating unwanted vibrations and noises.
What FaSiP brings to the table
The system has operated since mid-2024, but Porsche only recently decided to shed more light on this advanced new testing method. The road-simulation bench is said to have the ability to precisely simulate real-world driving conditions in a controlled environment, allowing for optimization and validation of the vehicle during early development stages.
Porsche’s new road-simulation bench allows for more comprehensive refinement and suspension setup. This is achieved through independent excitation of the separate axles. This allows engineers to isolate and analyze specific noises, vibrations, and harshness (NVH), and dispose of them. 
The process effectively acts as a magnifying glass for unwanted noises and vibrations. The vehicle is mounted longitudinally on running belt units (similar to a running mill, but for cars), where it simulates different driving conditions, with a vertical excitation range of up to 40 mm up and down (for an amplitude of 80 mm) at a frequency of 0 to 50 Hz. The electrically-driven belts can also simulate acceleration and deceleration.
The FaSiP test bench can perform all the above-mentioned simulations at speeds of up to 155 mph (250 km/h), which Porsche points out is unique worldwide, and aids in testing the brand’s high-performance models while simulating extreme driving conditions.
“On the FaSiP, we can reproduce any vibration phenomenon that has occurred on the vehicle anywhere in the world, analyze the causes, and optimize it”, says Rainer Gebhardt, Driving Comfort Senior Expert at Porsche. Prolonged testing on the FaSip should mean that future Porsche models would be optimized for any road in the world.
There is still a human aspect in the process. A developmental engineer sits in the vehicle and controls a tablet, which allows the modification or removal of certain variables in the excitation or frequency ranges, in order to target specific NVH problems. Porsche’s developmental technique turns subjective perception into objective parameters, based on recorded data, or simply “ironing out the imperfections”, if you want it to sound less German.
The level of versatility allows Porsche to use this method while developing a wide range of vehicles, from SUVs to flagship sports cars like the Porsche 911. This isn’t the first time the German brand has rewritten the book of performance, speed, and refinement.
While the Porsche 930 Turbo, ominously dubbed the “Widowmaker”, was a controversial, yet iconic chapter in the brand’s sports car history, the current 911’s T-Hybrid system proved that you can, indeed, have all the benefits with none of the drawbacks of an electrically-assisted powertrain.
Why is this important?
Through the use of the FaSip road simulation bench, Porsche significantly cuts down developmental times and costs. Usually, a test prototype goes through numerous test drives in order to clear all the imperfections, which can be a long and grueling process.
Through the use of FaSip, these times are greatly reduced as the prototype is optimized much earlier in the developmental stage. The system also serves as validation for component durability.
Porsche says there is plenty of ground for future enhancements, meaning the FaSip system will only get better. With AI integration, numerous test runs, and data analysis, an automated comfort tuning is also in store for the future, reducing development times even more.
Porsche already makes some of the most driver-centric sports cars in the world, and with models like the Boxster and Cayman entering the electric age, it is interesting to see whether the brand can deliver again, despite skepticism.
Dimitar Angelov‘s automotive interests made him an expert in a wide variety of vehicles. Japanese brands like Toyota are closest to his heart, although performance cars in general are his favorite segment, which is why he is constantly on the lookout for the best deals on the market. Dimitar Angelov’s car passion and knack for the written word led him to complete a Master of Arts in Media and Communications, and classic car restoration. Dim is happy to get behind the wheel of any car and share his impressions. You can follow Dimitar on X, Linked-in, Instagram, and Facebook.
Image source: 992.2 Turbo S, Porsche FaSiP
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