Diesel engine exhaust regenerative particle filter operating characteristic determination procedure uses thermographic camera to obtain time related surface temperature profile and avoid local overheating

摘要

A diesel engine exhaust regenerative particle filter (2) operating characteristic determination procedure uses a thermographic camera (4) to obtain a time sequence of images of the filter surface and process (6) them to give an intensity profile against time which is used with a calibration curve (7) to create (6) a temperature profile that is used to determine (8) drive parameters (5) for optimal regeneration. Independent claims are included for equipment using the procedure and monitoring the filter inlet or outlet.