Fender Design - Wheel Arch Challenge

FENDER DESIGN-WHEEL ARCH

In this fender design is basically designing by the different regulation. There are JAPAN, EUROPEAN and USA regulations.

JAPAN REQUIREMENT:

• Measure clearance 'L' of tire, hub, cap and fender in three different positions with in area 'K' and produce clearance check chart to validate.
• Clearance must be greater than 5mm in all the three positions.
• Wheel guard requirement: The value of 'a' shall be more than 5mm at a line 30deg forward and 50deg rearward from the centrel vertical axis of axis of wheel.

USA REGULATION REQUIREMENT:

• Make clearance check details on all position from 100deg to 100deg and make the clearance check table.
• All value should be greater than 5mm to satisfy the regulations.
• The value of 'a' shell be more than 5mm at a line 30deg forward and 50deg rearward from the central vertical axis of axis of wheel.

EUROPEAN REGULATION REQUIREMENT:

Measure CL L at sections SA-SA, SB-SB, SC-SC, SD-SD, SE-SE and produce CL check chart to validate.

• At all five sections the CL L value should be greater than 10mm to satisfy the EUROPEAN regulation.
• Wheel guard requirement: The value of 'a' shall be more than 5mm at a line 30deg forward and 50deg rearward from the central vertical axis of axis of wheel.

Aspecially Know we are deaply discuse about "EUROPEAN REGULATION".

In this case 'L' value should be greater than 10mm to satisfy the EUROPEAN regulation. I have to check 'L' value at different 5 points. That all are shown in the below snapshoot and it also tabulated.

The European regulation requires a pre determined clearance or a minimum distance of 10mm. to be maintained between the Fender (Front Quarter Panel) and the respective tyre at particular points(5 points/Sections to be exact) along the tyre profile as shown below:

• A horizontal and vertical Axis is drawn from the centre of the wheel.
• The vertical axis intersection point is labelled as SA.
• Similar references are drawn at 30 degree to the left and 50 degree to the right of the section SA and are named SB and SC respectively.
• A line of 150mm is drawn perpendicular to the horizontal axis and the normal from that point on the fender gives us SE.
• The midpoint of the arc cut by the sections SC and SE results in a new section SD.
• The value of 'L' at each section and the value of 'a' are found out to determine whether the fender satisfies the European standards as shown below.

'L' Value at Section SA:

'L' Value at Section SB:

'L' Value at Section SC:

'L' Value at Section SD:

'L' Value at Section SE:

As per the European standards, the value of 'L' should be greater than 10mm. But at Section SB, the value of L is equal to 10mm and at other sections the value of 'L' is less than 10mm. So, it does not satisfy the condition L > 10mm to meet the European standards in any of the sections.

Wheel Guard Requirement:

Value of 'a' at SB:

Value of 'a' at SC:

The value of 'a' at the sections SB and SC are greater than 5mm. So, it satisfies the criteria for wheel guard requirement.

CONCLUSION:

From the above results, we can conclude that the given fender does not pass the European standards for wheel arch.