The future’s bright, the future’s L’Orange exhaust after-treatment 03 October 2014

What's claimed to be a new concept in exhaust after-treatment for large marine, offshore, land-based power plant and railway engines has been launched by L'Orange, a subsidiary of Rolls-Royce Power Systems.

Dubbed L'Onox, it injects a urea-water solution at a pressure of 10 bar into the engine exhaust system, using a common rail system for several dosing units, and running under real-time electronic control.

Dr Schmidt, CEO of Stuttgart-based L'Orange, says that the innovation is aimed at manufacturers needing to comply with the new emission limits for large engines (International Maritime Organisation Tier III and EPA Tier IV), which come into force in 2016.

"Exhaust after-treatment is often the only way to significantly reduce emissions, since manufacturers have usually already reached the limit ... inside the engine," states Schmidt.

He explains that the precision of L'Onox's injection control optimises mixing of the urea-water solution in the exhaust system to supports efficient reduction of NOx in its SCR (selective catalytic reduction) converter.

"Our product can be adapted to the specific engine requirements of global customers... We can now offer an injection concept in exhaust after-treatment that is not restricted to certain engines," continues Schmidt.

Thanks to long maintenance intervals and L'Orange's remanufacturing approach, L'Onox also delivers favourable lifecycle costs, he says.

And he adds that in some cases – and in combination with an SCR unit – the L'Onox system can also be retrofitted to older engines.

Brian Tinham

Related Companies
L'Orange GmbH

This material is protected by MA Business copyright
See Terms and Conditions.
One-off usage is permitted but bulk copying is not.
For multiple copies contact the sales team.