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Report: Mercedes-Benz equipping S500 with gasoline particulate filter

25 August 2014

DieselNet reports that Mercedes-Benz has equipped the S500 with a gasoline particulate filter (GPF), representing the first series production application of the GPF technology.

The installation was confirmed in the Auto-Umweltliste 2014/2015 report published by the Verkehrsclub Deutschland (VCD, German Traffic Club).

European regulations mandate a solid particle number (PN) limit of 6.0×1011/km, numerically equal to the limit already in place for diesel cars, to be effective for gasoline direct injection (GDI) vehicles from September 2017. A relaxed PN limit of 6.0×1012/km becomes effective for GDI vehicles beginning next month.

Gasoline particulate filters utilize the same type of wall-flow substrates that is used in diesel particulate filters. A GPF can be included in the exhaust system in addition to the three-way catalyst (TWC), or a TWC coating can be applied onto the GPF substrate.

VCD estimates that the added cost for the GPF can vary from €20-50 per vehicle, when in mass production.

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