emission repair Stansted

SCR (ang. Catalic Selective Reduction) urea dosing system (AdBlue), consists of a reservoir of AdBlue, a pump ensures sufficient fluid pressure, cares about its thermal properties as well as the same waveform monitoring the particular reduction of emissions as well as the SCR catalyst. The principle of functioning It lies in the treatment of exhaust gases during motor operation. Everything happens without changing the operating mode with the engine. AdBlue dosing system is autonomous and doesn't affect the operation with the engine, does not also raise fuel consumption. The high exhaust heat range causes the injected urea adjustments into ammonia and carbon dioxide and then the SCR catalyst ammonia and then reaction with the nitrogen oxides formed caused by which the volatile nitrogen and water vapor. System failures They are mainly linked to low temperatures. AdBlue freezes at a new temperature below 11, 5st C which makes the system at these temperatures will not work. Only a few moments after starting the motor heater, which is controlled because of the module AdBlue (AdBlue pump motor controller) causes fluid to heat up the achievement of the particular liquid and liquid style urea dosing starts. Crystallization of liquid occurring during freezing and thawing causes clogging with the AdBlue injector. Clogged injector is probably the most common causes of failing AdBlue dosing system. NOx sensor In newer versions (Euro5), the second temperature sensor exhaust system may be replaced with nitrogen oxide sensor. The sensor is quite expensive and as well as often crashes. Failure catalyst usually causes the looks of errors related on the NOx sensor (too many emissions). Reducing power / torque If the failure occurs inside vehicle emission reduction system, the dashboard appears icon as well as the message about the failing of AdBlue dosing system. If the deficiency just isn't remedied within 50 hours of torque will be reduced to 60%. Reduction in power occurs frequently in cars manufactured soon after 11. 2007 years, if the car had performed a software update can be found in copies made earlier. Vehicles of special products and services, ie. Police, Ambulance, Army does not possess the stop. Repair of AdBlue pump normally depends upon the crystallization of urea inside interior and clogging conduits.