Article from MOTORINDIA November 2011 edition.

NPL-Kruse GmbH joint venture to manufacture AdBlue for SCR system

Social consciousness towards environmental pollution with Government pressures on meeting the latest emission norms has led diesel vehicle manufacturers to adopt innovative technologies, besides improving engine engineering.

Effective April 2010, 13 major cities in India have been upgraded to meet BS IV (Euro IV) emission norms, while BS III (Euro III) has been introduced in the rest of the country. BS IV emission standards mainly focus on reduction of particulate matter and nitrous oxides (NOx) in the exhaust flue gas of vehicles.

At present, two technologies are competing to fulfill the Euro IV pollutant emission standards for commercial vehicles: cooled exhaust gas recirculation (EGR) and SCR exhaust gas after-treatment.

Selective Catalytic Reduction (SCR) is an exhaust after-treatment system that injects a small amount of AdBlue into the exhaust which, in the presence of a catalyst, turns NOx into harmless nitrogen and water vapour. This is a highly effective way to reduce harmful emissions to the extremely low levels specified by Euro emission norms. This reaction takes place downstream of the engine in the exhaust system and is known as “After-Treatment”, thus allowing the engine to be tuned for maximum efficiency for an estimated fuel savings of 5-10 per cent.

Commercial vehicle OEMs are evaluating both the EGR and SCR technologies to ascertain the most suitable technology for the Indian market. Globally, most of the OEMs have preferred the SCR technology for reasons like improvements in overall system efficiency, fuel economy improvement, increased power density and lower heat rejection, service interval improvement (oil drain - low soot), and lower maintenance costs.

AdBlue is the fuel for the SCR technology and is a critical component to meet the emission standards. It is a non-toxic, crystal-clear, synthetically produced solution. It is used as a means of reduction for SCR systems of diesel-powered vehicles.

AdBlue is carried on the vehicle in an additional tank. The dosage for trucks is about 5% of the diesel consumption. This is exactly calculated by the electronic system and injected into the exhaust gas main.

Realizing the potential for AdBlue in India, Nandan Petrochem Ltd. (NPL) got into a joint venture with Kruse GmbH, Germany, to establish NPL BlueSky Automotive Pvt. Ltd. with a mandate to manufacture and market AdBlue in India. The objective of setting up this company is to supply AdBlue to OEMs for their first fill requirement as well as to service their vehicles using the SCR technology on the road. As such, NPL BlueSky Automotive has already commissioned the AdBlue manufacturing plant at Silvassa near Vapi, Gujarat.

The plant has been imported from Germany and is being used all over the world by KRUSE joint venture partners. This plant has been patented by Kruse and is certified by German Automobile Association (VDA) to produce AdBlue meeting ISO 22241 standards.

KRUSE GmbH & Co KG is into the business of AdBlue since 2005 and has a market share of about 35 per cent in Germany. They have 16 JVs all over the world for manufacturing and marketing AdBlue.

NPL, established in 1992, is engaged in the business of manufacturing and marketing of automotive & in- dustrial lubricants, greases and speciality products. It has three manufacturing plants having a total capacity of 80,000 MT per annum.

Diesel Emissions Conference India 2012