Back to the future for BUS AND COACH

摘要

After peaking at 8.6 million in 1939, London's population is soon set to surpass that figure and is now forecast to rise to 10.3 million people by 2030. The challenge of accommodating their demands, in terms of transport, goods and services falls to, among others, Glen Davies, programme manager at TfL (Transport for London).Retrofit emission control systems that will bring older trucks up to Euro VI may be woefully thin on the ground, but there is no shortage of packages for buses. Nor need they necessarily rely on AdBlue, says Lars Tinggaard Johannesen, product manager at Amminex Emissions Technology (pictured, left). "The approach we use is somewhat different," he smiles.The Danish company has developed something called ASDS - Ammonia Storage and Delivery System. Instead of AdBlue, it uses ammonia held as a solid in removable and replaceable cartridges which is released into the exhaust system as a gas. "The dosing unit is the only moving part," he says."Each cartridge has twice the volumetric capacity when compared with AdBlue," he continues. "The cartridges aren't pressurised, and they operate at room temperature. Nor is there a weight penalty. Each cartridge weighs 16kg which equates to around 20 litres of Ad Blue."