In Flensburg at the KBA, Federal Minister of Transport Andreas Scheuer himself got behind the wheel and showed the assembled German press how important emissions compliance in real-world vehicle operation is to him. The industry cannot ignore the latest generation of AdBlue retrofitting from HJS.
- Funding for hardware retrofitting of municipal vehicles complements
Federal program for buses - HJS presents NOx systems with active thermal management at the Federal Motor Transport
Office (KBA) - When others switch off, we switch on: how retrofitting with effective
AdBlue technology works
On Thursday (23.08.2018), Federal Transport Minister Andreas Scheuer (CSU) had the latest generation of NOx retrofit technology with active thermal management from HJS explained to him in real-life installation at the Federal Motor Transport Authority (KBA) test facility in Flensburg.
Hardware retrofits for municipal vehicles are also being funded
The timing was perfect: the German government is supporting public transport companies with 107 million euros to make their fleets more environmentally friendly by retrofitting exhaust aftertreatment systems. This applies above all in those cities where the nitrogen oxide limit value of 40 micrograms per cubic meter of air is exceeded.
The transport minister also stated that his ministry will also promote hardware retrofits for municipal vehicles. These include refuse collection vehicles, street cleaning vehicles, ambulances and fire engines. These vehicles are on the road around the clock, said Scheuer: “Hardware retrofitting really makes sense here – because it is technically mature, the installation space is available, the savings are pleasingly high, it can be implemented quickly and vehicles with high mileage and a long service life are only used in urban areas.”
20,000 municipal vehicles are eligible for hardware retrofitting
At least 20,000 vehicles across Germany are eligible for hardware retrofitting. These vehicles are almost exclusively on the road in city centers – where retrofitting is particularly worthwhile.
Why retrofitting is effective: when others switch off, HJS switches on!
Retrofitting buses with HJS technology is based on the established SCRT® technology. To convert the nitrogen oxides, the fuel AdBlue®is mixed into the exhaust gas. This reacts with the nitrogen oxides to form harmless nitrogen and water vapor. However, the system requires a certain temperature for this, which is not always safely achieved, especially in the real urban operation of buses or municipal vehicles. Vehicle manufacturers solve this problem in vehicles of the Euro VI generation by means of engine thermal management: the engine generates the required exhaust gas temperature in a targeted manner, which is not possible in retrofitting, so HJS actively introduces the temperature into the system by means of self-sufficient measures.
The active thermal management system from HJS uses two networked electrical actuators to ensure that the best possible NOx reduction is always achieved in the SCR catalytic converter – without affecting the engine. Through the combined use of particulate filter and SCR technology with active thermal management, HJS guarantees maximum exhaust gas purification.
“When others switch off, we switch on,” explained Jan Ebbing, Head of Retrofitting at HJS, in Flensburg, “our systems specifically increase the temperature when the engine is running too cold, which is the case on many public transport routes, for example, and municipal vehicles often run even colder. Classic AdBlue systems without active thermal management reach their limits even with modern coating technologies if you want to consistently reach the level of Euro VI vehicles.”
Systems are available immediately
The systems presented by HJS meet the funding guidelines published by the Federal Ministry of Transport as part of the “Clean Air Immediate Action Program” and are available immediately for many bus types. Systems for municipal vehicles are already being tested and will be available as soon as the federal directive is published