Over in Europe, Mercedes-Benz has just introduced a version of the diesel powertrain for its buses that passes the EEV emissions standards without having to use either a particulate filter (DPF) or selective catalytic reduction (SCR).
Diesel Particulate Filters
For 10 years, diesels lovers have had a reason to celebrate their engines a little bit more than before: filters that reduce pollution. Called Diesel Particulate Filters (DPF), the devices were first introduced by Peugeot at the Frankfurt Motor Show back in 1999. The lucky vehicle was a Peugeot 607. As you might know, DPFs come in two versions. Some of them, like the ones used by PSA, need a special additive, called Eolys. Others, like the ones used at Toyota, store the pollutants in a chamber a
2009 Ford S-Max - Click on image for high-res gallery
Back in late 2006, two of the world's largest auto suppliers, Bosch and Denso, teamed up to create a joint venture to develop and produce diesel particulate filters. The joint venture was to build a plant in Poland near a Bosch brake parts plant. The partners were to have spent €8 million each on the factory.
Subaru is slowly expanding his diesel availability in Europe. Fitted with the marque's signature boxer diesel cylinder (the only I can think of in a modern production vehicle), this diesel powertrain has been already available for a few months for the Legacy and Outback models. Following the Paris Motor Show, the engine will also be found under the hoods of Impreza and Forester models. The diesel Impreza gets 150hp and has CO2 emission levels of 152 g/km, while the Forester develops 147hp and ha