Exhaust gas aftertreatment

// References 

The following technologies were developed from concept to series production, mostly in leading positions:

• Catalytic hydrolysis of urea
• SCR systems for trucks and ocean-going vessels (diesel, B100, HFO, gas, DF, MGO)
• High pressure SCR systems for low-speed two stroke engines 
• Clog-free diesel particulate filter (awarded the German Environmental Prize)
• SCR coated particulate filter for trucks and passenger cars 
• Sulfur resistent SCR particulate filter for ocean going vessels (EU- Hercules 2- project)
• Sulfur resistant catalytic methane oxidation  (PtJ conference proceedings 2019 S. 27ff)

The tasks included

• Concept and process development
  
• Catalyst development and selection
• Set-up of test facilities (laboratory and engine test bench) and supervision of engine and field tests
• Function development and calibration
• Supplier selection and management
• Certification process, in particular IMO Scheme B and US EPA
• Emissions acceptance by notified bodies (TÜV, DNV/GL, CCS, RINA, LR, BV etc.)
• Responsibility for emission complicance
  
• Risk assessments
• Documentation and failure trees
• Evaluation of engine and exhaust aftertreatment technologies with regard to their influence on greenhouse gas emissions (nitrous oxide and methane)
• Technology and component approvals

In addition to these developments, customer projects were also supported.

Furthermore, technology assessments, including engine tests, were carried out (e.g. desulphurisation technologies).