Volvo Penta will introduce its Selective Catalytic Reduction (SCR) technology for Indian original equipment manufacturers (OEMs) when the stringent BS (CEV/Trem) IV emission regulations come into effect in October 2020.
SCR was first developed by Volvo Group in 2006. In 2011, Volvo Penta introduced the system for industrial off-road customers, further developing it in 2014. For OEMs, this means no re-generation, easy installation, continuous optimised fuel consumption and low operating costs. For the Indian market, the current emission legislations applicable for off-road vehicles is BS (CEV) III from 2014, covering limited applications. Now, as announced by regulatory authorities, BS (CEV/Trem) IV will cover most of the off-road applications.
With the introduction of BS (CEV/Trem) IV, all engine manufacturers are required to introduce after-treatment systems for engines between 129kW to 560kW. This, in turn, will put enormous demands on OEMs, forcing them to re-design their machines to install new engines and after-treatment systems. Volvo Penta’s strategy is to keep these changes as simple as possible for Indian OEMs. Volvo Penta’s SCR technology complies with BS (CEV/Trem) IV emission regulations without using a separate diesel particulate filter (DPF) or diesel oxidation catalyst (DOC).
The SCR system is based on high efficiency combustion, which reduces the fuel consumption and results in extremely low levels of particulate matter (PM), but also in high levels of nitrogen oxides (NOx). The exhaust NOx is converted into harmless nitrogen gas and water vapour. The SCR system automatically injects diesel exhaust fluid or urea to the exhaust gases. The gases are then passed through a catalytic converter before it is emitted to the environment. The extremely low levels of PM in the emissions also make exhaust gas filtration (DPF) unnecessary.
“We have extensive experience of SCR technology in the Volvo Group and we firmly
believe that our BS (CEV/Trem) IV-compliant product range is industry-leading. We have been supplying BS (CEV/Trem) IV equivalent Stage IV/Tier 4 final engines globally since 2014 and have
more than 200 OEM customers. From speaking to them, it’s clear our OEMs and operators
are extremely pleased with competitive advantages of these engines in terms of no regeneration
and easy installation, as well as low operating costs,” says Miron Thoms, Vice President and Head, Volvo Penta India.
Volvo Penta has similar engine footprints for all emission standards. As a result, the OEMs already using Volvo Penta BS (CEV) III engines will have no trouble changing to a BS (CEV/Trem) IV model, as the SCR catalyst will simply replace the current silencer. It will also allow for lesser regulated export markets to be served without need of engine room redesign, and can be considered future proof against the inevitable BS (CEV/Trem) V regulations.