- The Best Clutch Brands
- The Best Clutch Brands
- THE LEADER IN AUTOMOTIVE COOLING
- How Clutches Work
- Clutch Kits/Clutches
The Best Clutch BrandsA clutch is a mechanical device which engages and disengages power transmission especially from driving shaft to driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts drive shafts or line shafts. In these devices, one shaft is typically attached to an engine or other power unit the driving member while the other shaft the driven member provides output power for work. While typically the motions involved are rotary, linear clutches are also possible. In a torque-controlled drillfor instance, one shaft is driven by a motor and the other drives a drill chuck. The clutch connects the two shafts so they may be locked together and spin at the same speed engagedlocked together but spinning at different speeds slippingor unlocked and spinning at different speeds disengaged. The vast majority of clutches ultimately rely on frictional forces for their operation. Usually, as little slippage difference in speeds as possible between the two members is desired. Various materials have been used for the disc-friction facings, including asbestos in the past. Modern clutches typically use a compound organic resin with copper wire facing or a ceramic material. Ceramic materials are typically used in heavy applications such as racing or heavy-duty hauling, though the harder ceramic materials increase flywheel and pressure plate wear. In the case of "wet" clutches, composite paper materials are very common. Since these "wet" clutches typically use an oil bath or flow-through cooling method for keeping the disc pack lubricated and cooled, very little wear is seen when using composite paper materials. Friction-disc clutches generally are classified as push type or pull type depending on the location of the pressure plate fulcrum points. In a pull-type clutch, the action of pressing the pedal pulls the release bearing, pulling on the diaphragm spring and disengaging the vehicle drive. The opposite is true with a push type, the release bearing is pushed into the clutch disengaging the vehicle drive. In this instance, the release bearing can be known as a thrust bearing as per the image above. In automotive applications, this is often provided by a mechanism in the clutch disc centres. In addition to the damped disc centres, which reduce driveline vibration, pre-dampers may be used to reduce gear rattle at idle by changing the natural frequency of the disc. These weaker springs are compressed solely by the radial vibrations of an idling engine. They are fully compressed and no longer in use once the main damper springs take up drive. For example, drive straps are now commonly employed to transfer torque as well as lift the pressure plate upon disengagement of vehicle drive. With regard to the manufacture of diaphragm springs, heat treatment is crucial. This type of clutch has several driving members interleaved or "stacked" with several driven members. Multiplate clutches see much use in drag racingwhich requires the best acceleration possible, and is notorious for the abuse the clutch is subjected to.
The Best Clutch Brands
If you drive a manual transmission caryou may be surprised to find out that it has more than one clutch. And it turns out that folks with automatic transmission cars have clutches, too. In fact, there are clutches in many things you probably see or use every day: Many cordless drills have a clutch, chain saws have a centrifugal clutch and even some yo-yos have a clutch. In this article, you'll learn why you need a clutch, how the clutch in your car works and find out some interesting, and perhaps surprising, places where clutches can be found. Clutches are useful in devices that have two rotating shafts. In these devices, one of the shafts is typically driven by a motor or pulley, and the other shaft drives another device. In a drill, for instance, one shaft is driven by a motor and the other drives a drill chuck. The clutch connects the two shafts so that they can either be locked together and spin at the same speed, or be decoupled and spin at different speeds. In a car, you need a clutch because the engine spins all the time, but the car's wheels do not. The clutch allows us to smoothly engage a spinning engine to a non-spinning transmission by controlling the slippage between them. To understand how a clutch works, it helps to know a little bit about frictionwhich is a measure of how hard it is to slide one object over another. Friction is caused by the peaks and valleys that are part of every surface -- even very smooth surfaces still have microscopic peaks and valleys. The larger these peaks and valleys are, the harder it is to slide the object. You can learn more about friction in How Brakes Work. A clutch works because of friction between a clutch plate and a flywheel. We'll look at how these parts work together in the next section. How long does a car's radiator last? How long do crankshaft bearings last? Diagram of car showing clutch location. See more transmission images. Learn More: How long does a car's radiator last?
THE LEADER IN AUTOMOTIVE COOLING
How Clutches Work
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