An automotive engine develops maximum torque at a speed of 1000 rpm At this speed, the...

An automotive engine develops maximum torque at a speed of 1000 rpm At this speed, the power developed by the engine is 25 kW. The engine is equipped with a single plate clutch having two pairs of friction surfaces. The mean diameter of the friction disk is 190 mm and the coefficient of friction is 0.35. Six springs, with a spring index of 6, provide the necessary axial force. The springs are made of patented and cold-drawn steel wires of Grade 2 (G = 81 370 N/mm2). The permissible shear stress can be taken as 50% of the ultimate tensile strength. Determine the wire diameter of the spring.

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Expert Solution

Here we have to first find the torque applied by the engine and then the load shared by the springs. From that data we can find the shear stress induced in the spring wire. That value of the shear stress will be compared with the allowable shear stress to find the value of spring wire diameter for safe design. Please have look into the attached images for solution in details. Thank you.

samet mamat answered 1 year ago

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