implementation and fabrication of pneumatic...

IJRME - International Journal of Research in Mechanical Engineering ISSN: 2349-3860

IMPLEMENTATION AND FABRICATION OF PNEUMATIC ASSISTED CLUTCH FOR FOUR

WHEELERSGalwin Smith.L1 | V.Ganesan2 | W.Karol Joseph3 | Sreesha M Bhat4 | J.Vimal Kumar5 1(Automobile Engineering,UG scholar,Christ The King Engineering College,Karamadai,Coimbatore,Tamil Nadu,India,

[email protected]) 2(Automobile Engineering,Assistant Professor,Christ The King Engineering College,Karamadai,Coimbatore,Tamil

Nadu,India,[email protected]) 3(Electronics and Communication Engineering,UG Scholar,INFO College of Engineering, Coimbatore, Tamil Nadu,

India,[email protected]) 4(Automobile Engineering,UG scholar,Christ The King Engineering College,Karamadai,Coimbatore,Tamil

Nadu,India,[email protected]) 5(Automobile Engineering,UG scholar,Christ The King Engineering College,Karamadai,Coimbatore,Tamil

Nadu,India,[email protected])___________________________________________________________________________________________________

Abstract—The working of a clutch is to initiate motion or raise the velocity of a body generally by changing kinetic energy from another moving body. A Clutch is a machine member used to connect the driving shaft to a driven shaft, so that the driven shaft may be started or stopped at any time, without ending the driving shaft. A clutch thus provides an interruptible linking between two revolving shafts. Clutches allow a high inertia load to be started with a small power. Clutches are also used widely in production machinery of all types. The field of industrial mechanization requires the realization of complex control and motion tasks. Also electric drive solutions, pneumatic drives are being used to solve these tasks. Pneumatic drives differentiate themselves through a flexible and robust design and require only low investment. In case impossible to strike the clutch pedal for changing the gear by physically changed persons. And in heavy traffic conditions, drivers use to change the gear frequently by mechanism of clutch. Finally, by this method it reduce the effort.

Keywords— velocity, interruptible, inertia, machinery, robust, Pneumatic, mechanization. ______________________________________________________________________________________________________________

1. INTRODUCTION In an automobile vehicle, there are many different designs of vehicle clutch, but most of them are based on one or more friction discs pads, which are tightly forced together against a flywheel by using some springs. The friction material may vary in arrangement depending on whether the clutch is a dry or wet, and on another concern. Clutches which are found in heavy duty applications such as trucks and oppositions cars use ceramic clutch material that have greatly increased friction amount, however these have a ―grabby‖ action and are unsuitable for road cars. It is therefore, necessary that the driven shaft should be disengaged from the driving shaft. Also the clutch disconnects the engine from the diffusion to change the gear. It provides a positive connection for transferring the maximum engine torque at high speed of the vehicle requiring direct coupling of the engine to the communication without any outflow of the power. The assignation and detachment of a clutch is usually operated by a lever. But in clutch-by-wire method, it has no mechanical link between the clutch and the pedal. It is electronically controlled by means of an Solenoid valve and an pneumatic cylinder. The main disadvantage of that method was the wires should be made sufficient strong to require much force and power when pressing the clutch and a lot of accidents was occurred from that test. In this we are using a button or a switch in the top of the gear lever to

press the clutch, thus cutting off the current to the clutch pedal and uncoupling the clutch.

2. TOPOGRAPHIES OF CLUTCH: i. There much be not much extreme force to discrete the effort from the clutch. ii. There must be a reasonable coefficient of friction in the clutch friction surface in all employed conditions. iii. It should provide tolerable cooling or ventilation to disintegrate heat generated. iv. The material used for clutch must have satisfactory thermal conductivity to disintegrate heat, so misrepresentation to flywheel and pressure-plate is avoided. v. It should withstand high temperatures and holding loads without crushing. vi. The clutch surface should be hard enough to repel wear but not much hard to cause scoring. vii. A clutch free pedal play must be provided in the clutch to reduce the load on the shove bearing and wear respectively. viii. It should be cheap and easy in fabrication.

3. MACHINE APPARATUSES: The creations of the machines are much simple in which it require less frugality than the innovative clutch technique. The clutch button or the switch is the unconventional used in the unusual clutch pedal. The hand operated clutch in

IJRME - International Journal of Research in Mechanical Engineering Volume: 03 Issue: 01 2016 www.researchscript.com 31


four wheels consists of the following apparatuses to fulfill the necessities of complete operation of the mechanism.

• Solenoid Valve • Pneumatic Cylinder • Clutch Pedal • Push Button • Air compressor.

3.1.Solenoid valve

A valve is a device that controls the movement of liquid (gases, liquids, fluidized solids, or slurries) by opening and closing or moderately blocking passageway ways 1. In 5/2 way solenoid valve is commonly used, a lever can be physically warped or touch to actuated the valve, a inner or outside hydraulic or pneumatic pilot to move the channel inside, sometimes with a spring return on the another end so it will go back to its unique position when pressure gone, or a arrangement. 3.2. Pneumatic Cylinder

The double acting cylinder necessitates compressed air for every way of gesture. On this type of cylinder, the force both the progressing and withdrawing direction is constructed up using compressed air. The simplest way of stimulating a double acting cylinder is by using a 5/2 way valve. The constant force needy on stroke and the strokes of several meters are potential. 3.3 Clutch Pedal

The clutch disengages the engines from the transmission system every time you aggressive the pedal. The clutch unit is a friction disc that is used to convey power from the engine to transmission system, so in order to shift gears, then have to disconnect the engine from the transmission system then it. 3.4. Push Button

Push button are those which can be made to work with the potency of a finger. Almost the all parts of the switch can be fingered out by noticing its external structure. The red colored knob is the actuator of the switch. The actuator extends towards the bottom of the switches and switch and surfaces out as a thin cylinder. Among other bulbous allowances of the two stationary metal contacts legs provided at the bottom. A groovy pattern also provided for the purpose of easy intensifying. 3.5. Air Compressor



In an air compressor, air is compressed by hauling in atmospheric air, dropping its volume and collective its pressure. An air compressor is a useful device used for supplying compressed air and power into a definite space. It is used for any purpose that requires air in an enlarged pressure, or air in compact volume. The air compressor type may diverge in the cooling method, compression stages, lubrication, and power source.

4. CONSTRUTION In Pneumatic assisted clutch the above components are used. The push button is connected at the top of the gear lever. Here the push button, battery, air compressor is connected to solenoid valve. The double acting pneumatic cylinder is connected to solenoid valve by two valves. Finally, rod stud in the pneumatic cylinder is connected to the clutch pedal. CAPACITY

• Pneumatic cylinder - 0.7 Mpa • Solenoid valve - 12 V • Air compressor - 250 PSI • Battery - 12 V

5. WORKING The working of pneumatic assisted clutch is tranquil and the creating is easy. In this system a push button is operated by the driver for lower effort. After pressing the push button solenoid valve gets functioned. Solenoid valve is coil of wire which can change as a magnet if an electrical current flows through it from the battery. Solenoid valve makes an air passage form air compressor from pneumatic cylinder. Piston in the pneumatic cylinder is used to make movement forward and backward, here the clutch pedal is fixed with rod stud in the piston. Initially have to press the push button, the compressed air pass to pneumatic cylinder through solenoid valve. It makes the movement of piston forward with clutch pedal the clutch engaged after modifying the gear have to release the push button, finally the clutch pedal comes backwards then the clutch

disengaged. The block diagram shows short brief of working of solenoid valve:

6. CONCLUSION The experimental details shows that its possible to come up with a pneumatic assisted clutch with the use of solenoid valve. The pressing of push button make easy engage and disengage while changing gears within the correct timing than the clutch pedal kicking functions. The vehicles can run in smooth operations in heavy traffic conditions. MERITS

• It is useful to physically challenged persons, • It is highly reliable, • It is easy and simple working by using of solenoid

valve. REFERENCE

[1] Design and Finite Element Analysis of an Automotive Clutch Assembly Rajesh Purohita, PoojaKhitoliyab and Dinesh Kumar Kolica,c Department of Mechanical,

[2] On the Development of an Efficient Regenerative Compressor [3] D. Griffini1, S. Salvadori1,*, M. Carnevale2, A. Cappelletti1,

L. Ottanelli1, F. Martelli1 Department of Industrial Engineering, University of Florence, via di S. Marta 3, 50139 Florence, Italy 2Centre of Vibration Engineering, Imperial College of London, SW7 2BX London, UK

[4] Process simulation of energy behaviour of pneumatic drives Elvira Rakova*, Jürgen Weber Dresden University of Technology, Institute for Fluid Power (IFD), Helmholtzstr. 7a, D-01069 Dresden, Germany

[5] Design and Finite Element Analysis of an Automotive Clutch Assembly Rajesh Purohita, PoojaKhitoliyab and Dinesh Kumar Kolica,cDepartment of Mechanical Engineering, MANIT- Bhopal (MP) India. manufacturing Process and Automation Engineering Department, NetajiSubhas Institute of Technology, (NSIT), Dwarka, New Delhi, India.


implementation and fabrication of pneumatic...

Documents