Abstract: A method for inspecting a diesel particulate filter. The method comprises placing the diesel particulate filter in a test chamber, drawing air through the filter; measuring air flow through the filter, comparing a measured air flow value with a predetermined expected air flow value, determining a condition of the filter responsive to the step of comparing; and digitizing and storing the condition of the filter within a computer controller.

Abstract: A diesel particulate filter inspection machine. The machine comprises a test chamber for receiving a diesel particulate filter and a fan for drawing air from outside the chamber through the filter. An air flow measuring device measures air flow through the filter and compares a measured air flow with a predetermined air flow threshold value to determine whether the diesel particulate filter needs further cleaning.