Fender Design - Wheel Arch Challenge

AIM - To analyisis the Wheel Arc gap and check whether the car passes the European standard.

FENDER -

• Fander is an aesthetic part, which is located over The wheels of the vehicles.
• It is used to protect and frames its wheel.
• It keep mud, stones pieces away from tire and pedestrian.

WHEEL ARCH

• It is a semi circular part which is located above the tyre.
• The wheel should be always inside wheel arch
• This will prevent damage to the exterior component of car and engine compartments and also prevent injuries to pedestrian.

DESIGN REGULATIONS REQUIREMENTS FOR THE WHEEL ARC

• For the safety of pedestrian there are different regulation set by different countries.
• This regulation will depend on the condition of roads.
• Sum of regulation are

1. Japan regulation
2. European regulation
3. United State regulations

• In this regulation the common thing is that the tires will always inside the fender but the distance between them will vary for different countries.
• As per Japanese regulation the gap should be 5 mm or more at 3 points(BELOW IMAGE).

• As per US regulation the distance should be 5 or more but the points will lie after every 10° between -20° to 180°(BELOW IMAGE).

EUROPEAN REGULATIONS REQUIREMENT

• As per European regulation da minimum distance should be 10 mm or more.
• Since the gap is 10 mm so if the fender pass this regulation, it feel also pass JAPAN AND US regulation
• We count the distance at 5 different point as soon in below image.

• As we can clearly see that there are five lines so we will find the difference at these lines and will see whether the gap is 10 mm or not.
• The gap is denoted by L
• So We Will Find L value at sections SA-SA SBS-B SC-SC SD-SD SE-SE

Procedure

• First we will make a plane on edge of the wheel.
• Then we will draw horizontal and vertical line.
• We will make a line which is 30° and 50° to vertical line as shown in below image
• Draw a point at wheel arc at 150mm from horizontal line.
• Now join this point with origin
• Make bisector of above line and 50 degree line.
• With the help of intersection make a points at 4 lines .

• Now use project curve and project points on fender.
• Next step is to find the gap " L" .

Figure 1(Measurement of L at section SB-SB or at 30° line) L=10mm

Figure 2(Measurement of L at section SA-SA or at VERTICAL line) L=9.9499mm

Figure 3(Measurement of L at section SC-SC or at 50° line) L=-0.113949mm

Figure 4(Measurement of L at section SD-SD or at BISECTING line) L=-2.8875mm

Figure 1(Measurement of L at section SE-SE or at 150mm line) L=-5.9973

SECTION	REQUIRED DISTANCE(MM)	L=MEASURE DISTANCE(MM)	RESULT
SA-SA	10	9.9499	FAIL
SB-SB	10	10	PASS
SC-SC	10	-0.113949	FAIL
SD-SD	10	-2.8875	FAIL
SE-SE	10	-5.9973	FAIL

Wheel Guard Clearance "A "

• The value of "A" should be more than 5 mm at AB-AB and AC-AC.

FIGURE 6 (Value of A at AB-AB)

FIGURE 7(Value of A at AC-AC)

)

SECTION	REQUIRED VALUE(MM)	MEASURE VALUE(MM)	RESULT
AB-AB	5	43.6263	PASS
AC-AC	5	38.3599	PASS

CONCULSION

After analyzing the data we can say that

• Minimum CLearance "L" is not achieved
• Minimum CLearance "A" is achieved
• So,the model don't fit the european standards.