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A DeNO x catalytic converter begins a preliminary removal of oxides of nitrogen.A diesel oxidation catalyst reduces the amounts of carbon monoxide (CO) and hydrocarbons (HC) released from the exhaust.
#Ram service def system in winter series
The emissions system works in a series of steps: Tier 2 regulations in the US are 0.07 grams per mile of NOx, which is ⅛ of the 0.40 limit in the European Union. X by use of engine controls alone is possible, but requires a significant penalty to fuel economy. X conversion in gasoline engines, which operate at stoichiometric air-fuel ratios. The BlueTEC system was created because diesel engines, while more fuel efficient than gasoline engines, operate at lean air-fuel ratios, preventing them from implementing the highly-efficient three-way catalysts employed for NO The BlueTEC systems allowed the elimination of much of the EGR in that vehicle's engine, which as a result gives 188 horsepower (140 kilowatts) compared to the non-BlueTec engine's 154 horsepower (115 kilowatts). īy 2010 a BlueTEC version of the Mercedes Sprinter was released. VW developed their own system, but it failed and they re-programmed the engine control to show false values during pollution tests. VW did not want to use a competitor's branding for a product they would introduce into the market. The reasoning for this change is due to the recognition of the VW TDI branding. In August 2007 VW Group announced that cooperation on BlueTEC with Daimler AG would end. The Jetta and the Tiguan use NOx adsorbers, while the Touareg uses a Selective Catalytic Reduction catalytic converter. VW introduced the Jetta Clean TDI, the Tiguan concept, and the Touareg BlueTDI as part of the BlueTec licensing program. At that time, these BlueTEC vehicles were 45- and 50-state legal, respectively, in the United States (a 45-state vehicle does not meet the more stringent California emission standards that have also been adopted by four other states).ĭaimler AG has entered into an agreement with Volkswagen and Audi to share BlueTEC technology with them in order to increase the Diesel passenger-vehicle market in the United States. The case was reinstated after Plaintiffs amended the complaint, and the litigation is ongoing.ĭaimler introduced BlueTEC in the Mercedes E-Class (using the DeNO x system) and GL-Class (using SCR) at the 2006 North American International Auto Show. Linares dismissed the lawsuit without prejudice, finding the plaintiffs had alleged no standing. In February 2016, Mercedes-Benz, Daimler AG, Bosch LLC and Bosch GmbH were sued by private plaintiffs alleging BlueTec violates standards in a manner similar to the Volkswagen emissions scandal. The BlueTEC was on the Ward's 10 Best Engines list for 20. The technology in BlueTec vehicles includes a selective catalytic reduction (SCR) system that uses diesel exhaust fluid, and a system of NOx adsorbers the automaker calls DeNO x, which uses an oxidizing catalytic converter and diesel particulate filter combined with other NO x reducing systems. BlueTEC is Daimler AG's marketing name for engines equipped with advanced NO x reducing technology for vehicle emissions control in diesel-powered vehicles.