Traduction de «Valve de dérivation des gaz d'échappement » (Français → Anglais) :

exhaust bypass valve

S. whereas air pollution resulted in more than 430 000 people dying prematurely in the EU in 2011, and costs EUR 940 billion annually in lost productivity; whereas more than 20 Member States are failing to meet the EU air quality limits set out in Directive 2008/50/EC; whereas nitrogen dioxide (NO2) is a dangerous pollutant and a precursor to several other pollutants such as ozone and particulate matter; whereas NOx and its derivatives cause lung cancer, asthma and numerous respiratory diseases, and particularly affect vulnerable groups such as children and the elderly; whereas NOx also has a severe impact on the environment and is responsible for acidification, eutrophication and the degradation ...[+++] of materials; whereas diesel vehicle exhaust is a principal source of NOx in urban areas in Europe; whereas nitrogen oxides (NOx) act as indirect greenhouse gases;

Q. whereas air pollution resulted in more than 430 000 people dying prematurely in the EU in 2011, and costs EUR 940 billion annually in lost productivity; whereas more than 20 Member States are failing to meet the EU air quality limits set out in Directive 2008/50/EC; whereas nitrogen dioxide (NO2) is a dangerous pollutant and a precursor to several other pollutants such as ozone and particulate matter; whereas NOx and its derivatives cause lung cancer, asthma and numerous respiratory diseases, and particularly affect vulnerable groups such as children and the elderly; whereas NOx also has a severe impact on the environment and is responsible for acidification, eutrophication and the degradation ...[+++] of materials; whereas diesel vehicle exhaust is a principal source of NOx in urban areas in Europe; whereas NOx acts as an indirect greenhouse gas;

N. whereas NOx and its derivatives can penetrate deep into the lungs and cause cancer and chronic breathing problems; whereas NOx emissions also have a severe impact on the environment and contribute to acidification and eutrophication; whereas diesel exhaust is a principal source of NOx in urban areas in Europe;

The partial flow dilution system has to be designed to extract a proportional raw exhaust sample from the engine exhaust stream, thus responding to excursions in the exhaust stream flow rate, and introduce dilution air to this sample to achieve a temperature below 325 K (52 °C) at the test filter.