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News | Toward a clean future

Euro 6 is set to go into effect in September 2015, and will mean stricter emission standards for internal combustion engines.
Experts agree that the future of driving is electric. However, until the technology is suitable for mass use, four of five vehicles around the world will have either diesel or gasoline engines. In particular, diesel vehicles have a bad reputation, as it is widely believed they contribute to poor air quality in urban conurbations. But this is a misconception: a lot has changed since the Euro 1 emission standard was introduced in 1991. For instance, the particle emissions of vehicles have been reduced by 97 percent. When Euro 6 goes into effect on September 1, 2015, emissions standards will be even stricter: the maximum nitrogen oxide emissions for diesel vehicles will be 80 milligrams per kilometer. For gasoline engines, the figure will be 60 milligrams per kilometer.
In addition to its research and development activities in the area of e-mobility, Bosch has continuously improved diesel technology for several decades. For example, particle filters now have an efficiency factor of more than 95 percent. Moreover, recent field tests in Paris La Garenne showed that filtered emissions had lower levels of particulate matter than the ambient air. Thanks to modern technology that was developed in anticipation of Euro 6, the nitrogen oxide emissions of diesel engines have also been efficiently reduced in recent years. With technologies such as the Bosch Denoxtronic system, an odorless urea solution (AdBlue) is injected. It reacts with nitrogen oxide and transforms it into harmless water vapor and nitrogen. As a result, the nitrogen oxide in emissions can be reduced by up to 95 percent. 
The CO2 emissions of diesel vehicles can be reduced even further: thanks to more aerodynamics and reduced friction, additional savings of ten percent are possible. Powertrain electrification will also give diesel motors a boost. Especially for heavy-duty and large vehicles such as SUVs, electric drives can also be beneficial in fuel-intensive driving situations such as starting and accelerating. Here, Bosch offers a broad range of solutions, such as a 48-volt hybrid that can reduce CO2 emissions by up to 15 percent in real driving conditions. “Diesel is more important than ever,“ says Dr. Rolf Bulander, Chairman of the Mobility Solutions business sector of Robert Bosch GmbH. “It is a key technology in reaching CO2 fleet targets – especially in Europe, diesel vehicles are very widespread.”
More information on diesel technology can be found here.