Euro 6 is a European Union regulation that sets emission standards for vehicles.The main thrust of the new regulation is to set lower limits for vehicle emissions of particulates and nitrogen oxides.. As of 1 January 2015, all new vehicles sold must meet the Euro 6 limits.
Since the Euro 1 regulation was introduced in 1993, emissions from road traffic have been drastically reduced. Advanced automotive technology – such as that provided by Bosch – reduces emissions of substances such as CO2, nitrogen oxides, and particulates. Technical advances in powertrains are also having an effect: since 1990, particulate emissions from diesel engines have been reduced by around 99 percent, while modern diesels emit some 98 per cent less nitrogen oxide than comparable vehicles from the early 1990s. As electrification of the powertrain continues to progress, emissions will fall even further.
Prices for models that comply with Euro 6 are generally in the same range as prices for comparable models that meet Euro 5. Sometimes Euro 6 models come with additional features – a different transmission, or different tyres for example – that push up the price. Take away the additional cost of these extras, and there is currently no appreciable increase in the price of Euro 6 models.
Diesel vehicles need a perfectly tuned exhaust-treatment system in order to meet the lower limits set out in Euro 6. For vehicles weighing up to around 1,700kg, a low-cost NOx storage catalytic converter is sufficient. “In heavy vehicles, only an SCR catalytic converter with AdBlue will do,” says Dr. Markus Heyn, president of the Diesel Systems division at Robert Bosch GmbH. This system injects AdBlue, an odourless urea solution, which converts the nitrogen oxides into harmless water vapour and nitrogen. AdBlue is refilled at regular service intervals.
What is Euro 6? https://www.youtube.com/watch?v=mL5gZrBwKCI