A concept lor an electrochemical reactor acting as a trap lor the removal 01 soot particles Irom diesel exhaust gas has been developed and presented earlier .
Only smail scale Ilat plate samples tested with synthetic exhaust gas was presented. Since then, the sample size has been increased, and test on a diesel engine in a test bench has been carried out. Various concepts lor the establishment 01 a sulficient filtering surface and lor the electrical connections have been tested, and the construction 01 a mulfler with an electrochemical reactor installed has been initiated. This is to be on a passenger car lor on-road test.
The preliminary bench test indicates a soot removal elficiency 01 75-90% with no accumulation 01 soot at the reactor, at temperatures above 250°C.
A separate project has been started to evaluate the possibilities 01 lean NOx removal on a similar reactor. Results Irom this will be reported separately.