Fender Design - Wheel Arch Challenge

DETERMINATION OF THE REGULATION TO THE GIVEN MODEL

Objective:

Our aim is that maesure the clearance between fender edge and tyre. NX CAD software used to measure distance between them from given model and also conclude whether it is European standards or not.

INTRODUCTION:

Fender:

• Fender is one of the automobile parts which is in all types of vehicles which products the vehicle. The fender products the vehicle from sand, mud, rocks, liquids and other road spray from being thrown into the air while the tyre rotating.

Purposes:

• Product the vehicle from dust particle during wheel rotating.
• It also be shield of wheel
• Product the passengers and pedestrians and near vehicle from stone and other dust particles.

Wheel arch:

• It is semi-circular part of the fender or outside edge of the fender. It is curved flange of fender.
• This wheel arch design be deferring in different countries. It depends on fender. Some car’s fenders are in outside of wheel. Some car’s fenders are in inside of the wheels. In outside fenders also be differing on different countries.
• It is end part of fender. So, it is used to measure the clearance from edge of tyre.
• For avoiding design alternations, the maximum values of the concerned regulation parameters used for designing purpose.

Different regulation:

Three types of regulation are mostly followed in designing.

1. Japan regulations:

• “L” is clearance of tyre and wheel arch. Measuring area is “K”.
• Take two lines from centre vertical line of wheel in two directions at 30 and 50 degrees.
• Take distance between these points and parallel points of tyre.
• The value of “L” should be gathered than 5 in at all position.

2. European regulation:

• In this regulation the clearance “L” is measured at different sections at SA-SA, SB-SB, SC-SC, SD-SD and SE-SE.
• Take different point as shown as picture and measure the distance between the wheel and arch. In this regulation takes two points at 30,50 from centre in different direction and take a point at 150mm from horizontal line.
• This value should gather then 10mm which satisfy the European regulation.

3. US Regulation:

• In this regulation clearance “L” is checked in every 10 degrees of distance. It is checked between -10 degree to 180 degrees.
• This clearance value is 10 between wheel arch and tyre which is satisfies this regulation.

WORKING OF OUR MODEL:

We are going to check this model whether it is European regulation or not. So, we will use European regulation method is used to draw and measure the clearance.

METHODOLOGY:

PROCEDURE:

1. First create a plane on the outer most surface of the wheel.
2. Draw sketch on this plane. First draw vertical and horizontal line by wheel centre point and change it as reference line.
3. Draw SB line at 30 degrees from canter line and draw SC line at 50 degree and take a point in 150mm and draw the line canter to this point and finish the sketch.

4. Project this sketch on the wheel arch by project curve comment.

5. Measure the distance between the tyre line end point and wheel end point.

CONCULATION:

1. From above the result this model is not satisfy the European regulation. This clearance value is above 10mm. So, this model is not European regulation model. We can conclude that we have successfully checked by European regulation but this design not meet the European regulation.
2. When we increase the SB, SC, SD, in order above 1mm, 9mm, 5mm, it will satisfy the European regulation.