5/15/2023 0 Comments Quickshift air filtersFilter efficiency as a function of particle diameter predicted from theory for a conventional fibrous filter having a uniform fiber diameter of 5 μm, a packing density of 0.05, a thickness of 2 mm and operating at an air flow velocity of 10 cm/s. Because Brownian motion increases as particle diameter decreases, the capture of particles by diffusion increases as particle size decreases.įigure 7.6. Some of the nanoparticles will collide with a fiber as they diffuse and be removed from the air flow. Therefore, nanoparticles do not follow single air streamlines but continuously diffuse across them as they travel around a fiber. However, small ones experience it more than large ones. Because inertia is greater for particles with larger diameter, impaction efficiency increases as particle diameter increases.Īll airborne particles experience Brownian motion. This process is referred to as inertial impaction. If the streamline's curvature is large, the particle may deviate far enough from the streamline to collide with the fiber surface. Particles with sufficient mass will not follow curved streamlines around fibers due to their inertia. Because they have a larger radius, larger particles are collected with higher efficiency by interception than smaller particles. The most predominant mechanisms contributing to particle collection are interception, inertial impaction, and diffusion.Īs spherical particles follow the air flow around a fiber, they can be captured if they pass within one particle radius of the surface or the fiber. Investigators have studied the mechanisms by which fibrous filters collect particles theoretically, experimentally, and using numerical modeling. Fibers are made from a variety of materials, including fiberglass and various polymers. The range of fiber diameters for a given filter is usually broad, and these diameters can range from less than 1 μm to several hundred micrometers. Particles are frequently collected throughout the depth of a fibrous filter rather than just on its surface. Fibrous filters, used more frequently in workplace applications, are a nonwoven mat of individual fibers oriented randomly in the two dimensions of the filter perpendicular to air flow. They are frequently used in the form of bags that are hung within a large housing. Fabric filters are made from woven and felted fabrics that collect particles primarily on their surface. Both fabric and fibrous filters are used for airborne particle control. Raynor, in Assessing Nanoparticle Risks to Human Health, 2011 7.6.2 Air FiltersĪir filtration is the technology used most widely to remove particles from an air stream due to its relative ease and flexibility. User reviews mention improved acceleration, comfort level & overall performance.įor the Quickshifter to work on your bike, you need to have the PowerTronic ECU installed.Peter C. Installation is easy & requires no modification to the existing mechanism. The QuickShifter assembly is water resistant and can be used in all weather conditions and all types of terrain. This simple apparatus is highly reliable & sensitive & won’t have any false triggers on rough terrain. Since the Piezoelectric sensor has no moving part nor any other complex arrangements. The best part is, the PowerTronic Quickshifter achieves this with no need to reduce the throttle. The Piezoelectric sensor senses the movement in the gear level and momentarily cuts the fuel supply to the engine, allowing gear to shift seamlessly. The PowerTronic QuickShifter is fitted on the gear shift lever. The PowerTronic QuickShifter effectively reduces the steps involved during gear changes allowing the biker to focus more on the road and giving him far better control & performance. With the PowerTronic Quick Shifter plugged in, you don’t have to adjust the clutch or throttle after and before changing the gear. The PowerTronic QuickShifter is an aftermarket performance accessory that allows you to shift the gears without having to engage the clutch.
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