It has been nearly four years since the 'Dieselgate' issue rocked Volkswagen, as well as the entire automotive industry to its core.
It resulted in the arrest of several high-ranking executives in the Volkswagen Auto Group (VAG), the fixing or 'buying-back' or millions of affected vehicles equipped with emission defeat devices, as well as the company itself re-branding to being more environmentally-friendly, and making electric vehicles.
However, it seems Volkswagen has not entirely abandoned diesel engines. While it's no secret that Volkswagen still equips some of their models with turbo-diesel powertrains (in certain markets), the company has continued to make diesel engines run cleaner. And with an all-new Golf set to be launched soon, Volkswagen wants to make it known to everyone that it will continue having an oil burner under the hood.
This will be made possible via what Volkswagen calls 'twin dosing'. It makes use of a smart selective catalytic reduction (SCR) technology that effectively reduces emission of harmful nitrogen oxide gas by 80% thanks to two injectors that deliver AdBlue to a car's system.
For those not in the know, automakers have been using the chemical ammonia (also called AdBlue) to reduce nitrogen oxides emitted by diesel engines. Volkswagen's new twin-dosing system improves on that by having two injectors that apply AdBlue in the exhaust system, and near the engine itself. With this new feature, hydrocarbons from diesel engines will be reduced significantly, which will result in cleaner air.
For now, the 150 PS version of the 2.0 TDI Evo engine (already seeing use in the new Passat) is the first nameplate from Volkswagen to come with the twin dosing SCR system. In the future, Volkswagen plans to install it across all turbo-diesel models of the Golf, as well as in other models. This will allow their engines to meet the strict Euro 6d emission standards.
While Volkswagen may be looking at electrification for all their cars, it looks like they are not yet ready to say goodbye to diesel technology just yet.