![]() AutoCAD The Mechanicalland blog category includes various tips and articles about AutoCAD.ANSYS is explained in this category’s articles with photos from ANSYS software. ANSYS Mechanicalland visitors can find lots of articles and tips about ANSYS on illustrated basis.Larger or smaller pulleys are used to reduce or increase the speed of accessories, as we mentioned earlier, but a very popular one today is to get a smaller supercharger pulley, which increases the speed and boost for increased power. A lighter-weight pulley translates to less rotational weight, which means an engine can build speed quicker. #V belt pulley system designer upgrade#Performance pulleys are a very common upgrade on newer vehicles with serpentine-belt drive systems. An idler pulley for this application will be designed with its own mounting bracket that uses the same mounting bolts for the compressor, and the pulley is the same size as the original compressor pulley. But, without the pulley from the compressor, the serpentine belt loses its running path. With some higher-production vehicles that see frequent compressor failures when they get old, many owners opt not to spend the money to fix them. Idler pulleys have earned a unique position over the years of occasionally being a replacement for bad A/C compressors. This type of tensioner eliminates noise, regular belt adjustment and over- or under-tightening of the belt, and reduces harsh effects on accessories from accel/decel forces. The second type of tensioning pulley continuously and automatically keeps belt tension at its optimal point and, as mentioned before, is really what we refer to when we say “tensioner” or “tensioning pulley.” It’s simply an idler pulley that is mounted on a bracket, which, in turn, contains a spring mechanism that applies a constant, predetermined amount of tension on the belt. #V belt pulley system designer manual#While it’s an effective method and often much easier than the traditional “swing” of an entire accessory to take up slack, it doesn’t solve accel/decel effects, and it still leaves the age-old problem of manual belt adjustment, getting it too tight or not tight enough. The belt-tension adjustment is made by tightening or loosening the belt, depending on application. A threaded bolt goes through the base, and the head of it is supported by a bracket. Manual tensioners, used on both serpentine and some V-belts, are just an idler pulley that’s mounted onto an adjustable base. Alternators can spin very fast without problems, but when you exceed 16,000 to 17,000 rpm, you could be knocking on the door for trouble. On a high-revving engine, it’s very possible that you could spin an alternator in excess of its mechanical limits. But, then you have to consider how fast the alternator spins at high engine rpm. If you add electrical accessories like fog lights or a powerful stereo, you may experience low charging at idle, and installing a smaller pulley to increase the speed of the alternator could solve the problem. Using this example, when a vehicle is designed, the alternator pulley is sized so that it spins fast enough at idle for the battery to charge properly. Either the idle speed is too low, or the electrical consumption is too high. Have you ever been in a car at night that when idling, the lights are dim, but as soon as you accelerate, they get bright? The alternator wasn’t spinning fast enough to generate the necessary electrical output. To illustrate this, let’s consider an engine running at idle speed and look at alternator operation. This is important because each different type of accessory is designed to operate at a certain speed to perform its intended job. ![]()
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