Performance characteristics of air intake pleated panel filters for internal combustion engines in a two-stage configuration

Figures & data

Figure 1. Air filtration process: (a) single-stage filter (porous panel filter); (b) two-stage filter (multicyclone–porous panel filter) of a truck.

Figure 2. Granulometric dust composition in the air, before and after cyclone for air stream Q_G =35 m³/h.

Table 1. Parameters of the 1703 VH 206 filter paper (WIX Filtron 2017) and AC-301 non-woven fabric (www.retopfibre.en.alibaba 2017).

Parameter	Unit	1703 VH 206	AC-301
Basis weight	g/m^2	137	210
Thickness	mm	0.56	2.34
Air permeability	dm^3/m^2/s	270 at 200 Pa, A = 20 cm^2	80–110 at 120 Pa

Figure 3. Functional diagram of the test stand for testing filter media in the “cyclone–panel filter” configuration: 1–cyclone, 2–dust collector, 3–dust dispenser, 4–compressed air rotameter, 5–tested filter element, 6–liquid pressure gauge, 7–particle counter, 8–duct, 9–dust probe, 10–absolute rated filter—main line, 11–absolute rated filter—extraction line, 12–extraction stream rotameter, 13–main stream rotameter, 14–extraction fan, and 15–ambient temperature, pressure, and air humidity gauge.

Figure 4. The properties of the filter paper used as the second filtration stage of the filter set (downstream of the flow-through cyclone) and in a single-stage system: (a) separation efficiency φ_p = f(k_m) and pressure drop Δp_p = f(k_m); (b) separation efficiency φ_p = f(k_m) and filtration performance d_zmax = f(k_m) as a function of the mass loading of dust k_m.

Figure 5. The properties of the non-woven fabric used as the second filtration stage of the “filter set” (downstream of the flow-through cyclone) and in a single-stage system: (a) separation efficiency φ_w = f(k_m) and pressure drop Δp_w = (k_m); (b) separation efficiency φ_w = f(k_m) and filtration performance d_zmax = f(k_m) as a function of the mass loading of dust k_m.

Figure 6. Bed model of similar spherical particles.

Figure 7. The characteristics of separation efficiency φ_w = f(k_m) and pressure drop Δp_w = f(k_m) as a function of dust mass in the inlet air of the filter paper used as the second filtration stage of the “filter set” (downstream of the flow-through cyclone) and in the single-stage filtration system.

Figure 8. Predicted mileage of a vehicle fitted with a single-stage or two-stage filtration system: A–paper, B–non-woven fabric, C–cyclone–paper, D–cyclone: non-woven fabric, E–cyclone–paper.

WIX Filtron, Filter catalog, Gostyń, 2017. www.retopfibre.en.alibaba. 25.05.2017.

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