Challenge

Fender Design - Wheel Arch Challenge

VVenkatesh Moorthy13 Sept 2022

DESIGN

#5 FENDER DESIGN - WHEEL ARCH CHALLENGE

AIM:

To examine the Fender and wheel arch whether is passes European noems standard.

OBJECTIVE OF THE WHEEL ARCH:

Main objective of the project is to calculate the Wheel arch area, and also conclude, If the car will pass

the European standards or not. Because of countries are follow the different regulation.

To create a line from the centre of wheel to fender wheel arch area of SA,SB,SC,SD and SE lines.

WHEEL ARCH:

Wheel arch is the semi - circular part of the vehicle is position on the top of the wheel. Wheel arch

claddings are there to stop water and dirt ingress from getting into tight spots around the wings of the car to

prevent corrosion.

They also protect any electrics or pipework from the water. They are originally made for vehicles when are

supposed to take more abuse in terms of off road or water wading. It prevents scraping of paint near wheel

arches also prevents water from getting inside the panel which could lead to rust.

Wheel arch is must be shielded the wheel, because it will ensure that passengers and pedestrian are not

affect by the stones, mud, water from the bottom of the car.

Fender Wheel Arch Regulations

Japan Regulations

The clearance ‘L’ for tire, hub, cap and fender is to be measured within area K and create clearance check

chart to validateThe value of L should be greater than 5mm at all positionsWheel guard requirement

The value of ‘a’ should be more than 5mm at line 30° forward and 50° rearwards from the central vertical

axis of the wheel

European Regulations

The Clearance ‘L’ should be measured at sections SA-SA, SB-SB, SC-SC, SD-SD and SE-SE and create

clearance check chart to validateAt all the five sections the value of L should be greater than 10mm

to satisfy the European RegulationsWheel guard requirement: The value of ‘a’ should be more than

5mm at line 30° forward and 50° rearwards from the central vertical axis of the wheel.

US Regulations

Clearance ‘L’ is to be checked at all positions from -100° to 100° and create clearance check chart to validate
The value of L should be greater than 5mm to satisfy the regulations.
Wheel guard requirement: The value of ‘a’ should be more than 5mm at line 30° forward and 50° rearwards from the central vertical axis of the wheel

Calculation of wheel arch area according to European Regulations

For calculation of clearance between Wheel Arch and Wheel we have to create a sketch on the outer most face of the wheel. The procedure of which is given below.

A Datum Plane is created at the outermost face of the wheel
The sketch is created on the new Datum Plane
A Horizontal line is drawn across the centre of the wheel
A perpendicular line SA is dropped at the centre of the wheel
Two lines SB and SC are created at 30° forward of SA and 50° rearward of SA respectively
A point is created 150mm vertically above the centre line
A line SE is drawn from the wheel centre and passes from the point created
Another line SD is drawn from the centre of the wheel and in the middle of lines SC and SE
* SKETCH

Software Used: NX 12 (CAD)

Sketch is drawn on the wheel face as per the European standards provided and projected on the wheel

arch at sections SA, SB, SC, SD and SE to measure 'L', 'a and wheel arch area.
If we need to finding the Wheel arch area, then we have sketch on the tire surface.