The development of emission standards for the EU (Euro 1 to Euro 5) indicates a significant decrease in pollutant emissions since the beginning of the 1990s:
"All in all, the automotive industries are subject to very harsh and demanding regulation concerning fuel consumption and CO2-emissions. The goal of preventing the emission of CO2 on the basis of the "Integrated Approach" wherever possible and cost-efficiently still persists."
(Annual Report VDA 2009)
The automotive industry is affected both directly as an energy user and indirectly by the expected increase in price for energy and energy-intensive pre-products. Many small and medium-sized combustion plants at the automotive industry's production sites are run in order to generate thermal heat for production processes and waste air purification.
Since the 1970s, products made of High Temperature Insulation Wool have been used as support mats to accurately bed in the ceramic substrates for catalytic converters and diesel particulate filters into the exhaust gas systems and protect them from mechanical damage. Furthermore the support mat insulates the exhaust system and reduces heat emission to the outside, decreasing the thermal loads and increasing the system's durability.
"Are Fibres Representing a Potential Hazard to the General Public Released from Catalytic Converters/ Diesel Particulate Filters into the Environment?"