Suction system for internal combustion engine, has throttle flap utilized as pressure reduction unit controlled intelligently by software during re-ignition, and protection device with pressure sensor that is arranged downstream to flap

摘要

The system has a suction tube (20), and a throttle flap (23) that is arranged in the suction tube. A protection device (26) is activated during re-ignition in the suction tube and has a unit for pressure reduction in the suction tube, where the throttle flap is utilized as the pressure reduction unit, which is controlled intelligently by a software during re-ignition. The protection device has a pressure sensor (27) that is arranged downstream to the throttle flap, and an evaluation unit (28) that is connected to its signal output.