Lightweight garage #8 Active driving noise compensation @ Mercedes-Maybach S 680 4MATIC (Z 223)

Published on

23.09.2021

The vehicle

To mark the 100th anniversary of the Maybach Type 22, the epitome of German luxury limousines is hidden behind door number 9 - the Mercedes-Maybach S680 4MATIC-Class with biturbo V12 engine. 612 hp and 900 Nm of torque accelerate the 2,350 kg heavy and 5.469 m long car to 100 km/h in 4.5 seconds.

Mercedes-Maybach S 680 4MATIC (combined fuel consumption: 14.1-13.3 l/100 km, combined CO2 emissions: 322-305 g/km); exterior: designo rubelite red/calahari gold; interior: nappa leather macchiato beige/bronze brown pearl; trim: designo wood walnut brown open-pore aluminum lines; combined fuel consumption: 14.1-13.3 l/100 km, combined CO2 emissions: 322-305 g/km*. Mercedes-Maybach S 680 4MATIC (combined fuel consumption: 14.1-13.3 l/100 km, combined CO2 emissions: 322-305 g/km); exterior: designo rubelit red/kalahari gold; interior: Leather Nappa macchiato beige / bronze brown pearl; trim parts: designo brown open-pore walnut wood with aluminum lines;Combined fuel consumption: 14.1-13.3 l/100 km, combined CO2 emissions: 322-305 g/km*

The V12 engine runs on Super Plus and has been on the market in Germany since spring 2021. In order to live up to its predecessor's reputation as the quietest saloon in the world, active driving noise compensation is also used here. The idea behind this was first used in the Nissan Bluebird ARX in the early 1990s.

The technology

In addition to insulating mats and insulating foam on the rear wheel arch and the triangular windows in the C-pillar made of special laminated glass and the double sealing of the cable grommet penetrations in the bulkhead, the active driving noise compensation covers low-frequency noises, such as the noise caused by rolling, with sound waves in the opposite phase. Six acceleration sensors on the chassis determine reference signals, which are used to calculate sound waves that are 180 degrees out of phase. Similar to noise-canceling headphones, equalizing sound waves are adjusted with the help of microphones in the interior and emitted with a maximum delay of less than three milliseconds. The bass loudspeakers of the Burmester® high-end 4D surround sound system, consisting of 31 loudspeakers and eight additional exciters, with a total output of 1,750 watts, are used for this purpose.

The lightweight aspect

The aim of the Mercedes-Maybach S 680 4MATIC was certainly to achieve the maximum possible noise reduction, so that the active driving noise compensation complemented the other measures. From a lightweight construction point of view, however, it is interesting to use the existing loudspeaker system and integrate the sound insulation function. In addition, this solution can be used for other vehicle types to replace insulation and special laminated glass through this functional integration. By way of comparison, it should be noted that 39 kg of primary sound insulation and 29 kg of carpet, which also provides a proportionate amount of sound insulation, are installed in the interior of the predecessor S-Class.

Mercedes-Maybach S-Class; Exterior: designo rubelite red/calahari gold; Interior: nappa leather macchiato beige/bronze brown pearl; Trims: designo wood walnut brown open-pore aluminum lines Mercedes-Maybach S-Class; exterior: designo rubelit red/kalahari gold; interior: Leather Nappa macchiato beige / bronze brown pearl; trim parts: designo brown open-pore walnut wood with aluminum lines

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