Fender Design - Wheel Arch Challenge
Fender Design - Wheel Arch Challenge
Fender is the side closing component for the engine compartment. It’s major role is to avoid chipping sand, small stones and mud particles inside the engine compartment when the wheels rotate. Fender also plays a major role to prevent injuries for the pedestrians. Basically we have two types of fender half bumper type and the full bumper type. The difference between two types are its size. The raw material usage plays a major role and so half bumper is economical.Drip area and wheel arch are one of the two important things to be considered while designing fender.
Wheel Arch:
There are standards all over the world for wheel arch of a car. Country to country they will fix a certain regulation considering the infrastructure available in their country. Basically when the wheel is seen from the front side and if it was outside the car the chipping will be more and that causes damage to the engine compartment and the pedestrians.
Japan regulation:
It says we need to draw two line with wheel centre point and reference to vertical line on the wheel with 30o on the left and 50o on the right. Projecting the points to the wheel arch the points must be 5mm or above.
European Regulation:
As like Japan it also says to draw two line with wheel centre point and reference to vertical line on the wheel with 30o on the left and 50o on the right. Projecting the points to the wheel arch the points must be 10mm or above. And additionally we will have to take a 150mm point from the zero or horizontal line of the wheel and also in between the 150mm point and the 50o point we will also take a midpoint. Along with this we need to measure “a” the distance between the outer most layer and the SB, SC should be above 5mm.
USA Regulation:
Here in USA we need to take points for every 10o from -20o of the right side to 0o of the wheel and all must be 5mm or above.
Here in this report we have checked a fender for European regulation.
We have drawn the points as per the requirements and here are the distance.
|
S No. |
Section |
Distance, L |
Result |
|
1 |
SB |
10 |
PASS |
|
2 |
SA |
9.949 |
FAIL |
|
3 |
SC |
-0.1139 |
FAIL |
|
4 |
SD |
-2.8489 |
FAIL |
|
5 |
SE |
-5.9973 |
FAIL |
On 30o line the a value is
On 30o line the a value is
Result:
As per the evaluation we come to know this wheel arch does not pass the european regulation requirement. Only L value of SB is PASS. Other four points are less than the required value. So we need to change the design.