Q2/ A dry single plate clutch is to be designed for an autontotive vehicle whase engine is ated to give100 &W at 2400 r.p.M. and marimum torque 500 N-m. The outer radus of the friction plate is 25% ore thanthe inner radius, The intensity of pressure berween the plate is not to exceed 0.07 N/mm. The coefficient offriction may be assamed egual t0 0.3 The helical springs reguired by this cluich to provide axial forcemecessary to engage the clutch are eight. If cach spring has stiffness equal to 40 N/mm, derermine thedimensions of the friction plate and initial compression in the springs

radius of the friction plate = r1 Inner radius of the friction plate = r2 r1 = 1.25 r2

92 A dry single plate clutch is to be designed for an automotive wehicle whose engine is rated to ghve T00 AW ar 2400 rp.M. and maximum toryue 500 N-m. The outer radio of the frietion plate is 25% more chan the inmer radins. The intensity of pressare benween the plate is not to exceed 0.07 Nmw The coefficient of friction may he assumed equal to .3. The helical springs reguired by this clutch to prvide axial force mecesary to engage the clutch are eight. f cach spring has afiness equal to 40 Nimm, determine the dimensions of the friction plate and initial compression in the springs

92 A dry single plate clutch is to be designed for an automotive wehicle whose engine is rated to ghve T00 AW ar 2400 rp.M. and maximum toryue 500 N-m. The outer radio of the frietion plate is 25% more chan the inmer radins. The intensity of pressare benween the plate is not to exceed 0.07 Nmw The coefficient of friction may he assumed equal to .3. The helical springs reguired by this clutch to prvide axial force mecesary to engage the clutch are eight. f cach spring has afiness equal to 40 Nimm, determine the dimensions of the friction plate and initial compression in the springs

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Example: An automotive single-plate clutch with twe of friction Surfaces, transmits a 300 N-m to- pairs rque at 1500 rp.m. The inner and outer diameters of the friction disck are 170 and 270 mm The cofficient of friction is 0-35. The normal for- ce on the friction Surfaces is exerted by nine helical Compre ssion springs, so that the clutch is always engia- ged. The clutch is dis engaged when the external force Further Compresses (5) and the number of ac Five Coile are (6) The are made of patented and Cold-drawn steel respectively. the springs. The spring index is Springs wires of minimum tensile Stmength (MTS) (N/mm?)as Wive dia. 1 1-21-4 1.6 1-8 2 2.53 3.6445567 MTS, 1900 i2601817e0175017201640 1570 I510 1480 440 139013201260 NI mr The permissible shear stress for the wire is 30%. of the ultimate tensile strength, and (G-81370 Nimn). Design the springs and specily their dimensisns. Use this relatian to obtaine to the total normal fore required to transmit the torque. F= 4T where Dis…
The axial pressure on a single disc clutch (both sides of the disc is effective) is limited to 0.12 Mpa. This is designed for a vehicle with 13kW power at a speed of 700 rpm. Assume uniform wear conditions and a friction coefficient of 0.25. If the outer dimater of the disc is 1.25 times the internal diameter, determine the dimensions of the disc lining and the axial force exerted by the springs.
7. Determine the minimum pressure in a plate clutch where the axial force is 1300 lb, the inside radius of contact is Ri = 2.5 in, the outside radius is Ro = 5 in. Uniform wear is assumed.
A CONE CLUTCH WITH CONE ANGL€ 20 IS TO TRANSMIT 7.5KW AT 750 8 P.m. THE NORMAL IN TENSITY OR PRESSURE BETWEEN THE CONTACT CACES IS NOT T O EXCEED 0-12N Imm? THE COEFEICIENT OF FRICTI(ON IS 0.2.1E FACE WID TH IS TH OF MEAN DIAMETER, FIND a) THE mAIN DIMENSIONS OF CLUTH AND (b) AXIAL FORCE REQUIRED whILE RUNNING
;: . L The contact surfaces in a cone clutch have an ej'fective diameter of 7‘5 i semi-angle of the cone is 15°. The coefficient of friction is 0.3. Find the torque requiy, 5 e slipping of the clutch if an axial force applied is 180 N. This clutch is employed to connect an electric motor running um_'form!y at 1 000 Epm. with, el which is initially stationary. The flywheel has a mass of 13.5 kg and its radius of gyriy, is Calculate the time required for the flywheel to attain full speed and also the energy [y, in of the clutch.
Torque transmitting capacity in a friction clutch can be increased by O a. All of these O b. Using friction material with a higher coefficient of friction O c. Increasing in the plate pressure O d. Increasing the mean radius of the friction disk
Q.1 Explain why torsional coil springs are fitted inside a clutch friction disc. Q.2 Study examples of competition sintered or 'paddle' type clutches. Most of them do not have torsional springs fitted to the friction disc/plate. Suggest why springs are not fitted to these types of clutches.
A thin rectangular plate is uniformly deformed as shown below. Compute the shearing strain at P associated with the two edges (PQ and PR) that were orthogonal in the undeformed plate.
A multiple disc clutch has three discs on the driving shaft and two on the driven shaft, providing four pairs of contact surfaces. The outer diameter of the contact surfaces is 250 mm and the inner diameter is 150 mm. Determine the maximum axial intensity of pressure between the discs for transmitting 18.75 kW at 500 r.p.m. Assume uniform wear and coefficient of friction as 0.3.
Q1 Q5) Determine the principal dimensions of a cone clutch faced with lather to transmit 40 kW at 800 r.p.m. from an electric motor to an air compressor. Sketch a sectional front view of the clutch and provide the main dimensions. Assume that the semi-angle of the cone is 10°, the coefficient of friction is 0.3, mean diameter of cone is (7-10)d, where d is the diameter of the shaft, allowable normal pressure for lather and cast iron is 0.1 to 0.2 N/mm, shear stress 100 N/mm, load factor is 2 and the mean diameter to face width ratio is 6.
A multidisk clutch is required to have a torque capacity of 300 N.m. Due to space limitations, the inner and outer diameters are specified to be 62 mm and 128 mm respectively. The coefficient of friction is 0.30 and the limiting pressure for the friction material is 900 Pa. Find the minimum number disks using uniform-wear model. Please be clear on your solution!
A clutch functions to continue the power of 110 Hp and 3600 rpm rotation, number of clutch plate 1, The total force of the spring suppressor 1500 N, correction factor 0.95 and friction coefficient 0.3 Calculate the Measures of Do and Di if the ratio of Do: Di = 3: 2