Fender Design - Wheel Arch Challenge

Wheel Arch

It is a curved part of the Fender positioned right above the Wheel.

The Wheel Arch is designed in such a way that it protects both the pedestrian and car cabin from mud, water rocks and other road sprays.

Different countries have different wheel arch regulations in place, and the wheel arch design must comply with them.

For avoiding design alterations of the same vehicle to meet the different regulations in different countries, the maximum values of the concerned regulation parameters are taken into consideration for design purpose.

Fender Wheel Arch Regulations

US Regulations

Clearance should be checked from -20 degree to 190 degree with a 10 degree of interval which should be greater than 5mm.

European Regulations

The clearance should be measured on above sections SA, SB, SC, SD and SE.

Clearance should be greater than 10mm at all these points.

Wheel Guard Requirement at SB and SC should be greater than 5mm from the central vertical axis of the wheel.

Japan Regulations

The clearance should be measured in the area K and should be greater than 5mm at all points.

Calculation of Wheel Arch Area according to European Standards

Obtaing the clearance 'L' at all the 5 points should be greater than 10mm.

Clearance at SA

L=10mm

Clearance at SB

L=9.94mm

Clearance at SC

L=0.11mm

Clearance at SD

L=2.84mm

Clearance at SE

L=5.9mm

Clearance vlaue'a' for Wheel Guard Requirement

At 30 degree line SA

a=44.75mm

At 50 degree line SC

a=38.37mm

CONCLUSION

From the above calculations, the fender does not pass the European Regulations.