Goldman Sachs Group. has been granted a patent for a sound attenuating engine exhaust system designed to reduce undesirable exhaust sounds from internal combustion engines. The system features dual resonators that utilize destructive wave interference and Helmholtz resonance to dampen specific sound frequencies while directing exhaust gases away from the vehicle. GlobalData’s report on Goldman Sachs Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Goldman Sachs Group, Digital lending was a key innovation area identified from patents. Goldman Sachs Group's grant share as of July 2024 was 81%. Grant share is based on the ratio of number of grants to total number of patents.
Sound attenuating exhaust system for internal combustion engines
The granted patent US12071874B2 describes a sound attenuating engine exhaust system designed to effectively manage exhaust gases from an internal combustion engine in vehicles. The system features an exhaust inlet that receives exhaust gases, a first resonator that dampens specific frequencies of exhaust sound waves, and a second resonator that works in conjunction with the first to further reduce sound levels. Key components include a resonant neck that connects the second resonator to the exhaust outlet, facilitating the dampening of sound waves through mechanisms such as destructive interference and Helmholtz resonance. The design incorporates a drain hole in the first resonator to manage moisture, and the resonators are tuned to specific lengths to optimize sound wave attenuation.
Additionally, the exhaust system includes multiple openings in the exhaust tube to allow sound waves to propagate into the first resonator, enhancing its acoustic properties. The configuration of cylindrical guides around the exhaust tube is intended to create a path for sound waves that aligns with the principles of wave interference, thereby reducing acoustic energy exiting the system. The second resonator is also designed to operate as a Helmholtz resonator, targeting specific frequencies of sound waves, including those dampened by the first resonator. Overall, the patent outlines a comprehensive approach to minimizing exhaust noise through innovative resonator design and strategic sound wave management.
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