SCRT® for public transport buses
Soot particles have been able to be filtered from diesel exhaust gases, down to the limit of detection, with the aid of an HJS sintered metal filter (SMF
®) for some time now. But it's not just particulate matter that pollutes the environment and damages people's health: gaseous substances such as nitrogen oxides are also harmful. In order to reduce the levels of these gases, HJS has contributed to the development of the SCRT
® (Selective Catalytic Reduction Technology) system.
SCRT® combines a diesel particulate filter with an SCR unit for controlling nitrogen oxides. New buses that are already fitted with particulate filters can be retrofitted with an SCR unit to create an SCRT® system. Likewise, older vehicles without an exhaust treatment system can be retrofitted with an SCRT® system. SCRT® is currently the most effective and state-of-the-art exhaust-gas aftertreatment technology available.
- Retrofitting of Euro II and Euro III city buses
- SCRT® satisfies emission classifications Euro V and EEV
- Modular design with SMF® and SCR unit
- Absolutely low-maintenance and economical
How the SCRT® works
The modular SCRT
® system consists of an SMF
® and SCR unit. The CRT
® effect is used to break down the soot that collects in the particulate filter. This ensures the soot held in the filter is continuously burned off. The SCR unit reduces the diesel engine's emissions of nitrogen oxides – which pollute the environment and damage people's health – by up to 90 per cent.
Together with the HJS particulate filter, the SCRT® system reduces almost all pollutants in the diesel exhaust gases.
Better emission class – Euro III to Euro V and EEV
The SCRT
® system reduces not only soot and fine particulate matter in diesel exhaust emissions right down to the detectability threshold, but also nitrogen oxide emissions by up to 90 per cent, as well as emissions of the remaining gaseous pollutants. As a result, Euro III buses, for example, that have undergone an SCRT
® retrofit comply with the Euro V and even the EEV standard.
- Over 99% reduction of soot particles, including fine particulate matter
- Up to 90% reduction of nitrogen oxides (NOx)
- Over 95% reduction of gaseous pollutants (CO / HC)
Application range
This new generation of exhaust-
gas aftertreatment system enables bus manufacturers and local authority fleet operators to comply with the globally applicable exhaust emissions legislation of the future right now. The system has been designed such that it can be fitted not only to new but also older vehicles. Buses that already have a CRT
® system can also quickly be retrofitted with an SCR unit at little expense to create an SCRT
® system.
The SCRT® system is totally reliable. Even if the AdBlue® tank runs empty, it neither compromises the vehicle's running performance nor damages the SCRT® system. Moreover, use of an HJS SMF® makes the system both low-maintenance and economical.
Public Transport Buses
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