Automotive Design
Student Name:		Student Class Numbe

1- What are the functions of the automobile clutch? (ما وظيفة قابض السيارة؟)

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2- What are the advantages of the diaphragm spring? (ما هي مزايا النابض الغشائي للقابض)

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3- A single plate clutch is designed to transmit maximum torque (T_C) of 240 N m torque at 2200 rpm. The cultch friction plate has an outer diameter (d_o) of 200 mm and an inner diameter (d_i) of 120 mm, the coefficient of friction between the friction plate and the surfaces of the flywheel and pressure plate (μ) is 0.3. Calculate:

a) the engine maximum torque (T_{e max}) to couple with this clutch if the clutch factor of safety (SF or b) is 1.6

b) the spring force (F_s or F_n) assuming constant wear  

c) the surface pressure (p_o) on the friction material.

d) If the allowable tensile strength on the bolt material (σ_all) is to be 60 MPa.

i) Find the bolts size if the number of clutch cover bolts are 6

ii) Draw a free hand sketch of the bolt while fastening the clutch cover to the flywheel.    

 

 

 

 

 

 

 

 

 

 

e) if the dimensions of the strip are as shown in the figure, find the stress on the strip and rivet which will lead to the shown failures

F = ………………………………………..
	Type of failure	Stress
i
ii
iii
iv
v
The elongation of the strip (δ)  = ………………………………………….