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Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue [3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. DEF is consumed in a selective catalytic reduction (SCR) that lowers the ...
Early in the 1950s scientists discovered that vehicle emissions were a significant factor that had been causing the air quality to deteriorate. [7] This led to the introduction of vehicle emissions standards in California in 1966, furthermore due to the seriousness of the problem, in 1970 the Clean Air Act was introduced in order to regulate these standards all over the United States. [7]
In 2011, the European Commission's Joint Research Centre published a report which found the average on-road NO x emission of all tested diesel vehicles to be 0.93 ± 0.39 g/km, and that of tested Euro 5 diesel vehicles to be 0.62 ± 0.19 g/km. [83] Those numbers substantially exceeded the respective Euro 3–5 emission limit. [83]
BlueTEC is Mercedes-Benz Group's marketing name for engines equipped with advanced NO x reducing technology for vehicle emissions control in diesel-powered vehicles.The technology in BlueTec vehicles includes a selective catalytic reduction (SCR) system that uses diesel exhaust fluid, and a system of NOx adsorbers the automaker calls DeNO x, which uses an oxidizing catalytic converter and ...
British Rail Class 55 Deltic diesel locomotive with their characteristic dense exhaust when starting a train. Diesel exhaust is the exhaust gas produced by a diesel engine, plus any contained particulates. Its composition may vary with the fuel type, rate of consumption or speed of engine operation (e.g., idling or at speed or under load), and ...
The Cummins ISX also utilized DEF, or diesel exhaust fluid, in later models when EPA requirements changed. DEF is system of injected urea that reduces the emissions of a diesel engine. The Cummins ISX is required to have inhibitors in place for certain failures of the DEF system.
TDI is the combination of two existing diesel engine technologies: Direct injection — where a fuel injector sprays the diesel fuel directly into the main combustion chambers . This causes a more complete combustion process than using a pre-combustion chamber (known as indirect injection ), which therefore increases the torque output and ...
That bill was the Voinovich-Carper Diesel Emissions Reduction Act of 2010, which was the 3973 bill heard by the 111th Senate. S.3973 was first introduced to the Senate on November 18, 2010, but never made it past the Senate floor. Possibly because The Diesel Emissions Reduction Act of 2010 (H.R. 5809) was already making its way in the Senate.
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