emission repair Oxford

SCR (ang. Catalic Selective Reduction) urea dosing system (AdBlue), consists of a container of AdBlue, a pump ensures ample fluid pressure, cares about its thermal properties and also the same waveform monitoring the particular reduction of emissions and also the SCR catalyst. The principle of function It lies in the treating exhaust gases during serp operation. Everything happens without adjusting the operating mode with the engine. AdBlue dosing system is autonomous and will not affect the operation with the engine, does not also raise fuel consumption. The high exhaust temp causes the injected urea modifications into ammonia and fractional co2 and then the SCR catalyst ammonia accompanied by reaction with the nitrogen oxides formed because of which the volatile nitrogen as well as water vapor. System failures They are mainly related to low temperatures. AdBlue freezes at any temperature below 11, 5st C which makes the machine at these temperatures don't work. Only a few units after starting the serp heater, which is controlled because of the module AdBlue (AdBlue send controller) causes fluid to loosen up the achievement of the particular liquid and liquid type urea dosing starts. Crystallization of liquid that is caused during freezing and thawing causes clogging with the AdBlue injector. Clogged injector is probably the most common causes of malfunction AdBlue dosing system. NOx sensor In newer versions (Euro5), the second temperature sensor exhaust system have been replaced with nitrogen oxide sensor. The sensor is quite expensive and while doing so as often crashes. Failure catalyst usually causes the style of errors related for the NOx sensor (a lot of emissions). Reducing power / torque If the failure occurs inside vehicle emission reduction program, the dashboard appears icon and also the message about the malfunction of AdBlue dosing program. If the deficiency just isn't remedied within 50 hours of torque will be reduced to 60%. Reduction in power occurs quite often in cars manufactured immediately after 11. 2007 years, if the car had carried out a software update are located in copies made earlier. Vehicles of special solutions, ie. Police, Ambulance, Army does not develop the stop. Repair of AdBlue pump normally depends upon the crystallization of urea inside interior and clogging water lines.