AUTOTECH Kerala

TROUBLES ON CLUTCH 1. Clutch slip This is manifested in the clutch engage state. The clutch is unable to transfer all the torque generated by the engine. As the clutch slips, more heat builds up, causing the clutch face to wear out and ignite. 2. Clutch drag Clutch drag is a condition in which the clutch does not fully disengage when the clutch is disengaged and it is difficult to change gears. 3. Clutch judder This is a defect that causes the clutch to engage with vibration and shaking when the clutch is engaged. For this reason, the vehicle accelerates rapidly. 4. Clutch rattle When the clutch is engaged, the noise coming out of the clutch is known as rattle. This is most evident when the engine is running at idle speed. ക്ലച്ചിൽ ഉണ്ടാകുന്ന തകരാറുകൾ 1. ക്ലച്ച് സ്ലിപ്   ക്ലച്ച് എൻഗേജ് അവസ്ഥയിലാണ് ഇത് പ്രകടമാകുന്നത്. എൻജിൻ ഉത്പാദിപ്പിക്കുന്ന ടോർക്കിനെ മുഴുവനായും ക്ലച്ചിന് കൈമാറ്റം ചെയ്യാൻ കഴിയാതെ വരുന്നു. ക്ലച്ച് സ്ലിപാകുന്ന സമയം കൂടുതൽ ചൂട് ഉണ്ടാവുകയും, ക്ലച്ച് ഫേസിങ് ...

COMPONENTS OF A CLUTCH 1. Clutch plate The main component of the clutch plate is a steel plate with a central hub. Friction liners are provided on both sides. The coil spring receives the torsional vibration of the clutch and prevents it from entering other parts. The clutch faceplates are secured with specially designed cushioned springs to reduce the impact of the clutch while engaged. There is a possibility of torsional vibrations during clutch operation. The clutch plate is made in two parts to eliminate this. It is the central hub assembly and the outer facing ring assembly. Both of these are connected to each other using coil springs in specially made slots. 2. Clutch facing It should be low wear and high friction and should be able to withstand high temperatures without clutch facings and can be manufactured at low cost. The main materials used to make the clutch face are leather, cork, phobic, asbestos, rabatos and ferro. 3. Pressure plate & clutch fork The pres...

MAIN PARTS 1. Vacuum cylinder 2. Solinoid switch 3. Reservoir 4. Non return valve 5. Battery CONSTRUCTION Such clutches are operated using the low pressure generated in the inlet manifold of the vacuum operation engine. Its main components are a vacuum cylinder with a piston, a solenoid-operated valve, a reservoir and a non-return valve. The reservoir is connected to the engine inlet manifold via a non return valve. The vacuum cylinder is connected to the reservoir by a solenoid valve. WORKING When the switch provided on the gear lever is operated the connection between the solenoid and the battery and the valve is activated. Normally the switch will be in the off position provided in the gear lever. Due to this the connection between the solenoid and the battery is disconnected and the valve is in its low position. At this time atmospheric pressure will be felt on both sides of the piston in the reservoir. The switch turns on when the lever is moved to shift gears and conn...

MAIN PARTS 1. FLYWHEEL 2. WINDING 3. CLUTCH PALTE 4. PRESSURE PLATE CONSTRUCTION In this type of clutch operation, a winding is provided on flywheel. Also the clutch plate is placed in between flywheel and pressure plate. The winding is connected a switch in the gear lever through engine dinamo. The switch is always in closed condition . WORKING  In electro magnetic clutch, the winding on the fly wheel produces a electro magnetic filed. It attracts the pressure plate towards the flywheel. When the engine rpm increases, more current flows through the circuit. It helps the winding to produce more electromagnetic flex. When the driver changes the gear, the switch on the gear lever become open condition. It causes to cut off the circuit in the winding on flywheel. So the magnetic filed in the winding is removed. It causes to make a gap between clutch plate and fly wheel. So the power from the engine can't be transmit at this time. ഇലക്ട്രിക്കൽ ഓപ്പറേഷൻ പ്രധാന ഭാഗങ്ങൾ 1. ക്ല...

MAIN PARTS 1. Master cylinder 2. Slave cylinder 3. Fluid reservoir 4. Flexible hose CONSTRUCTION   The figure shows a line diagram of a hydraulically operated clutch. Such clutches are mostly used in heavy vehicles. This helps to reduce the driver's stress when disengaging large clutches. The master cylinder is connected to the slave cylinder with a flexible hose as shown in the figure. The reservoir is provided above the master cylinder. WORKING When the driver presses the clutch pedal, the pedal  activates the master cylinder. The master cylinder pumps the hydraulic fluid filled into the fluid reservoir and delivers it to the slave cylinder. At this point the piston in the slave cylinder moves forward and the clutch release fork moves and the clutch disengages. പ്രധാന ഭാഗങ്ങൾ 1. മാസ്റ്റർ സിലിണ്ടർ 2. സ്ലേവ് സിലിണ്ടർ 3. ഫ്ലൂയിഡ് റിസർവൊയർ 4. ഫ്ളക്സിബിൾ ഹോസ് 5. പുഷ് റോഡ്  നിർമ്മാണം ഹൈഡ്രോളിക്കായി പ്രവർത്തിക്കുന്ന തരം ക്ലച്ചിന്റെ ലഘുവായ രൂപമാണ് ചിത്രത്തിൽ കാണിച്ച...

MAIN PARTS 1. Clutch pedal 2. Linkages 3. Adjusting nut 4. Release fork 5. Release bearing CONSTRUCTION The figure shows a simple operation of mechanically operated type clutches. In this the clutch pedal is connected to the release fork through some linkages. And is directly attached to the fork release bearing. An adjustment nut is provided on the bottom of the clutch pedal or on the side of the fork to adjust the clutch free pedal play.The force exerted by the driver on the clutch pedal reaches the release fork through some levers. The release bearing does not rest on the release levers as soon as the driver presses the foot on the pedal. The distance this release bearing travels free is known as free pedal play. Vehicles usually come with 25mm - 35mm free pedal play. The levers are adjusted so that 10 to 12 times the force applied to the driver's pedal is applied to the release fork. WORKING The force exerted by the driver on the clutch pedal reaches the clutch fork...

  MAIN PARTS 1. FLY WHEEL 2. CLUTCH PLATES 3. SPIGOT 4. PRESSURE PLATE 5. CLUTCH SPRING 6. CLUTCH SHAFT CONSTRUCTION In this type of clutch, two or more clutch discs are used to increase the frictional area. The pressure plates and clutch plates are alternatively arranged on the clutch shaft and compressed by a number of pressure springs. These clutches may be dry or wet. Also the clutch plates are placed in between fly wheel and pressure plate . WORKING The clutch is always in engage condition, when the driver press the clutch pedal the pressure plate moves opposite direction of the forces applied by the pressure spring. It causes to make a gap between clutch plates and fly wheel. So the power from the engine can't be transmit at this time. This condition of clutch is known as clutch disengage.     When the driver releases the clutch pedal, the compressed clutch spring push the clutch plates to the flywheel through the pressure plate. So the clutch plates ro...

SEMI CENTRIFUGAL CLUTCH MAIN PARTS 1. FLY WHEEL 2. CLUTCH PLATE 3. PRESSURE PLATE 4. CENTRIFUGAL WEIGHT 5. LEVER 6. CLUTCH SPRING 7. CLUTCH SHAFT CONSTRUCTION This types of clutch is commonly used in heavy duty vehicles. Centrifugal force is used to keep the clutch in the engaged position at the engine r.p.m is high to avoid the clutch slippage. It operated automatically depending upon  the engine speed. The lever with centrifugal weight and clutch spring is placed back side of the pressure plate. Also the clutch plate is placed in between fly wheel and pressure plate. WORKING When the engine is working, the clutch spring helps the clutch in engage position. If the engine speed increases the centrifugal weights fly off due to the centrifugal force. The lever on the weight presses the pressure plate and clutch plate on the flywheel. Which assists in preventing slippage of the driven plate. സെമി സെൻട്രിഫ്യൂഗൽ ക്ലച്ച് പ്രധാന ഭാഗങ്ങൾ   1. ഫ്ലൈ വീൽ 2. ക്ലച്ച് പ്ലേറ്റ് 3. പ്രഷർ പ്ലേ...

  MAIN PARTS 1. Fly wheel 2. Clutch plate 3. Pressure plate 4. Diaphragm spring 5. clutch shaft 6. Throwout bearing 7. Pivot 8. Clutch cover. CONSTRUCTION : Different parts of diaphragm clutch are arranged in the order for its proper working. The most important part of diaphragm clutch is diaphragm spring which is used to apply the recommended pressure to the pressure plate.There are some other parts also which helps in proper functioning of clutch like flywheel, pressure plate, thrust bearing, hub and mechanism for engaging and disengaging of clutch.The clutch plate move axially in the driven shaft and is attached with the hub between the flywheel and pressure plate.It is must in a clutch disc to have both side friction lining because it is mounted between the flywheel and pressure plate. In the clutch, friction is responsible for the torque transmission. The pressure plate is attached with the flywheel and diaphragm springs.The main function of pressure plate is to help clutch pl...

MAIN PARTS 1. Fly wheel 2. Clutch plate 3. Clutch shaft 4. Pressure plate 5. Clutch spring 6. Bell crank lever 7. Centrifugal weight 8. Crank shaft CONSTRUCTION In this type of clutch, centrifugal force is used to keep the clutch in the engaged position. It is operated automatically depending upon the engine speed. It has a fly wheel, clutch shaft, clutch plate, pressure plate, bell crank lever and a centrifugal weight. The bell crank lever is fitted in to the pressure plate with the help of a lever is called bell crank lever. WORKING A simple diagram of a centrifugal clutch is shown in the above figure. When the engine speed increases, the centrifugal weight (A) fly off due to the centrifugal force. At the same time bell crank lever (B) presses the pressure plate(C) and the clutch plate (D) on the flywheel against the springs(G). This makes the clutch engaged. The torsion of spring (G) is designed for disengage the clutch below 500 r.p.m. So the power can't be transmit...

SINGLE PLATE FRICTION CLUTCH Clutch is a mechanism, which is used to connect and disconnect the transmission from engine. It placed in between engine and gear box. MAIN PARTS : 1. Fly wheel 2. Return spring 3. Friction pad 4. Pressure plate 5. Clutch plate 6. Clutch fork 7. Pilot bearing 8. Clutch shaft CONSTRUCTION The above figure shows the simple diagram of a single plate clutch. The clutch plate is placed in between the flywheel and pressure plate. Both sides of clutch plate surfaces are covered with friction pad. It reduces the wear and tear of clutch plate. A pressure plate is placed just behind the clutch plate and it press the clutch plate in the direction of fly wheel with the help of a compressed return spring. The clutch shaft is made with external splines for the ease movement of clutch plate through it. Clutch plate is also known as clutch disc. A pilot bearing is placed in the gap between clutch shaft and fly wheel. Also the pressure plate mechanism carries th...

CONE CLUUTCH Clutch is a mechanism, which is used to connect and disconnect the transmission from engine. It placed in between engine and gear box. MAIN PARTS 1. Male cone 2. Female cone 3. Return spring 4. Clutch shaft 5.Friction pad CONSTRUCTION:      A simple diagram of a cone clutch is shown in the above figure. It consists of a male cone, female cone, a return spring and a clutch shaft. The female cone is attached with the fly wheel, And the pressure spring is pressed the male cone against the female cone. The spring is placed just behind he male cone. The friction lining is placed the outer surface of male cone to reduce the wear and tear while clutch engaging and disengaging. The clutch shaft is also connected with gear box and male cone. WORKING PRINCIPLE      When the driver press the clutch pedal, the linkages moves the male cone against the pressure spring or away from the female cone through a thrust bearing, so the spring is become comp...