Suction device of engine for a vehicle

The suction system of internal combustion engine has raw air side (10), which discharges raw air into air filters (6) through raw air pipe (5) and the clean air side (11) of the air filter provides the clean air to the internal combustion engine through clean air pipe (11). Outgoing auxiliary pipe (12) from the engine compartment is tapered towards the direction of clean air side of air filter. The raw airside from the internal combustion engine flows to the surrounding of engine compartment. An independent claim is also include for motor vehicle.