Motor vehicle tank venting device has transport pump that comes into contact with fuel vapor and can be operated via regeneration valve with vacuum pump that does not come into contact with fuel vapor

摘要

The device has an absorption filter (3) connected to the fuel tank (1) to receive fuel vapor with a ventilation line (4), a regeneration line (5a,5b) to the internal combustion engine's induction channel (7), in which a transport pump (9) is integrated that comes into contact with the fuel vapor, and a regeneration valve (6). The transport pump can be operated via the regeneration valve with a vacuum pump (10) that does not come into contact with fuel vapor.