Toyota announced today that it aims to introduce a revolutionary diesel emissions purification system called DPNR (Diesel Particulate – NOx Reduction System) in passenger cars in Europe in 2003.
The new system, based on Toyota’s well known NOx storage reduction three-way catalyst technology, continuously and simultaneously reduces both particulate matter (PM) and nitrogen oxides (NOx) in diesel exhaust gas.
Toyota has for many years used oxidation catalysts and improved combustion technologies such as direct fuel injection, electronically controlled exhaust gas re-circulation (EGR) and electronically controlled fuel injection systems in order to reduce pollutants such as HC, CO, NOx and PM.
Now, for the first time, a single system has been devised that reduces both NOx and PM emissions at the same time, to combined levels not achieved before in diesel engines.
This simple and compact catalytic converter system will be fitted to a direct-injection diesel engine featuring the latest common rail, electronically controlled fuel injection technology. DPNR uses no additives and requires low sulphur fuel.