System of an air treatment unit for an utility vehicle and an air filter cartridge

摘要

A renewable air filter (10) for a pneumatic supply system of a commercial vehicle contains an electronic transponder (14), or an optical bar-code, which can be manually or automatically interrogated to ensure compatibility of any replacement filter unit and that correct renewal intervals are observed. Arrangement may be linked to driver's console (62, 64) and/or an engine management system. An independent claim is included for providing identification/technical information on a filter cartridge e.g. by electromagnetic means or optical bar code.