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(11) | EP 3 919 154 A8 |
| (12) | CORRECTED EUROPEAN PATENT APPLICATION |
| published in accordance with Art. 153(4) EPC |
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| (54) | EXHAUST GAS PURIFICATION FILTER |
| (57) An exhaust gas purification filter (1) is configured to be disposed in an exhaust
passage of a gasoline engine. The exhaust gas purification filter (1) includes partition
walls (11) including a plurality of pores (110), a plurality of cells (12) partitioned
by the partition walls (11), and sealing parts (13) that alternately seal ends of
the plurality of cells (12) in the exhaust gas purification filter. The exhaust gas
purification filter (1) is, with an average pore diameter of the partition wall (11)
as A(µm) and an average surface opening diameter of the pores (110) at a surface of
the partition wall as B(µm), adapted such that A ≥ B is satisfied, with A of 5 µm
or more and less than 15 µm, and such that a proportion calculated from a formula
of 100 × (A - B)/B is 30% or less.
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