Urea SCR- The Volvo Way

Ann  Grant, Volvo Technology AB

The Volvo group is the largest producer of 9-16L diesel engines in the world. In order to meet the stringent emission demands required now in Europe and the US, Volvo has chosen to optimize the engine for complete combustion. This minimize fuel consumption and the production of particulate matter and thus requires SCR This is done with urea-SCR with Ad-blue, at 32.5% eutectic solution of urea and deionized water which transforms to ammonia in the heat of the exhaust gases. Urea SCR will be deployed by both Mack and Volvo trucks to meet both US10 and Euro V. The Volvo urea SCR system challenges and solutions will be discussed including the Ad-blue distribution system in Europe.

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