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Harmonic balancers, shock absorbers and sound deadeners are three different auto parts that has got specific tasks in the engineering of an automobile. But then, there’s one quality which makes them seem to be all the same. It’s the capability to act as vibration damper that lessens uneasy movements. The shock absorbers use hydraulic component to resist rapid movement of car springs, maintaining then soft behavior over small bumps and firm control over large bumps. The sound deadeners which specialize in blocking or absorbing airborne sounds in some ways also decrease torsional and operational vibrations, just like harmonic balancers do. But unlike sound deadeners, the harmonic balancers are standard auto parts offered in every vehicle upon release. And compared to shock absorbers, it uses rubber plugs and or spring loaded friction discs with which the twisting power of the crankshaft is transmitted for control or reduction.
The Isuzu harmonic balancer which is integrated at the front part of the crankshaft of your Isuzu unit is a two-piece balancer connected by rubber plugs, spring loaded friction discs or both. In process, the twisting power generated by the cylinder hits the front crankshaft and then snaps to the opposite direction. The sudden twist brings torsional vibrations even if it’s considerably weak. However, before making its way to the opposite side of the crankshaft, the harmonic balancer at the front part resists some of its force. As it reaches the discs, the power will find a weaker port and end up into the rubber plugs. By that time, the damper wheel shall speed up its motion and make the operation calm.
Another way to reduce vibrations is to put additional weight to the vehicle. At such point the gravitational pull increases, bringing then steady car movement. As a consequence however, the engine performance will suffer. The fact that harmonic balancers are less heavy, you could expect no risk of performance reduction.
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