Raw-/ clean air lines & ducts
ContiTech air ducts are used for both the dirty air side (in front of the air filter) and the clean air side. Depending on the filter system used, the clean air duct must withstand vacuum pressure of up –180 mbar (i.e. 820 mbar absolute) without collapsing.
If the air duct is located directly between air filter and turbo-charger, then at the turbocharger side a high temperature resistance is required. Due to the high rate of air−low a smooth and streamlined inner hose design is required, to minimize pressure loss. This also has a positive efect to the acoustic behaviour of the hose.
ContiTech has developed a convolution design that not only gives excellent flexibility for the hose , but also meets the requirements for vacuum resistance in service. The target of this development was, to meet the right balance between the weight of the hose on the one hand and compliance with the requirements on the other one.