Effiziente Motorluftfiltration durch den Einsatz von Nanofasern

Sanders, Rolf; Bühler, Albrecht; Durst, Michael; Moser, Nikolaus; Pelz, Andreas

doi:10.1007/bf03225450

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…Czas pracy filtru do uzyskania założonej wartości Dp fdop zależy nie tylko od parametrów procesu filtracji powietrza na przegrodzie porowatej, ale także od jej pojemności pyłowej. Właściwość tę charakteryzuje współczynnik chłonności pyłu k m , którego wartość określona przy użyciu standardowych pyłów testowych o rozmiarach ziaren nieprzekraczających 100 μm dochodzi do 220 g/m 2 w przypadku materiałów filtracyjnych na bazie celulozy [1,3,6,11].…”

Section: Wstępunclassified

“…The filter life, until the obtainment of the assumed value Dp fdop , depends not only on the parameters of the filtering process in the porous barrier but also on its dust capacity. This property is characterized by coefficient of dust absorption k m whose value, determined with the use of standard test dust types of the grain size not exceeding 100 μm, reaches 220 g/m 2 in the case of cellulose based filtration materials [1,3,6,11]. For the fiber-based filtration materials, coefficient of dust absorption k m (given by few sources) reaches five times the value of those based on paper k m = 900-1100 g/m 2 [3].…”

Section: Introductionmentioning

confidence: 99%

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Experimental research of intake air filtering fibers in motor vehicle engines

Dziubak¹,

Szwedkowicz²

2013

Combustion Engines

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Properties of filtering materials used as porous barriers in filter elements of motor vehicle air cleaners have been analyzed. Criteria of fiber and paper selection for the filter elements have been presented. A relation showing the filter life and a coefficient of dust absorption km of filtering materials have been presented. A methodology of research of the fiber filter element characteristics has been developed. Results of investigations of the characteristics of efficiency, filtering accuracy and drag of the filtering fiber operating at different filtering rates have been presented. The coefficients of dust absorption km of the filtering fiber have been determined. Changes in the granulometric properties of dust in the airflow downstream of the filtering fiber and paper have been presented.

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Section: Wstępunclassified

Section: Introductionmentioning

confidence: 99%

Experimental research of intake air filtering fibers in motor vehicle engines

Dziubak¹,

Szwedkowicz²

2013

Combustion Engines

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“…The essence of the operation of a two-stage filter “multi-cyclone–porous partition” is that a multi-cyclone is characterized by the possibility of separating large dust masses from polluted air without increasing the pressure drop, but with a not very high efficiency (87–95%) or filtration performance ( d p > 15–35 µm). Remaining insignificant dust mass is directed to filter element, most often made of pleated filter material (most often paper) with low and limited absorbency ( k m = 200 g/m 2 ), but a high filtration performance—above d p = 2–5 µm—and high separation efficiency—above φ = 99.5% [ 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Fibrous Materials for Two-Stage Filtration of the Intake Air of Internal Combustion Engines

et al. 2021

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Pollutant properties in intake air to internal combustion engines were analyzed. Mineral dust particles’ influence on accelerated engine components’ wear was discussed. Dust concentration values in the air under various operating conditions in trucks and special vehicles were presented. The idea and necessity for using two-stage filters, operating in a “multi-cyclone–porous partition” system for vehicles operated in dusty air conditions, are presented. Information from the literature information has been presented, showing that impurities in small grain sizes reduce fiber bed absorbency. It has been shown that such a phenomenon occurs during filter material operation, located directly behind the inertial filter (multi-cyclone), which off-road vehicles are equipped with. It results in a greater pressure drop intensity increase and a shorter proper filter operation period. It has been shown that filter material selection for the motor vehicle air filter requires knowledge of the mass of stopped dust per filtration unit area (dust absorption coefficient km) determined for a given permissible resistance value Δpfdop. It has been shown that there is no information on absorption coefficient values for filter materials operating in a two-stage “multi-cyclone–porous partition” separation system. Original methodology and conditions for determining dust absorption coefficient (km) of a separation partition, operating under the conditions of two-stage filtration, were presented. The following characteristics were tested: separation efficiency, filtration performance, and pressure drop characteristics of three different filtration partitions. These were A (cellulose), B (cellulose and polyester), and C (cellulose, polyester, and nanofibers layer), working individually and in a two-stage system—behind the cyclone. Granulometric dust composition dosed into the cyclone and cyclone downstream was determined. During tests, conditions corresponding to air filter’s actual operating conditions, including separation speed and dust concentration in the air, were maintained. For the pressure drop values, the dust absorption coefficient (km) values of three different filtration partitions (A, B, and C), working individually and in a two-stage system—behind the cyclone—were determined experimentally.

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