| 摘要 |
An adjustable air dilution cigarettte with pressure drop compensation is disclosed. The cigarette comprises a tobacco rod and a filter element disposed within a filter assembly to which the tobacco rod is attached. The filter assembly comprises telescoping inner and outer sleeves, the inner sleeve having a plurality of air dilution passages which may be exposed or covered by telescoping movement of the outer sleeve to adjust the amount of diluent air admitted to the cigarette. As the outer sleeve is telescopically moved to increase the amount of diluent air admitted, it also compresses the filter element to cause an increase in pressure drop of the cigarette and thus compensate for the decrease in pressure drop resulting from the increased admission of diluent air.
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