Method and device for simultaneous adjustment of an air intake flow for an internal combustion engine and a secondary airflow into the same internal combustion engine's exhaust gas unit creates the secondary airflow by a fan.

摘要

A secondary airflow is created by a fan (20) driven by a turbine (18) in a bypass (16) fitted parallel to a throttle flap (14) in an internal combustion engine's intake tract (11). This causes amounts (21) of secondary air fed in to depend on the throttle flap's position. A control valve (32) balances this, connects to a secondary air pipe (22) by a connecting pipe (34) and affects the bypass' cross section so that this cross section can be expanded as the throttle flap opens.