DIESEL PARTICULATE FILTER - HONDA MOTOR CO LTD

Title:

DIESEL PARTICULATE FILTER

Document Type and Number:

Japanese Patent JP2008303785

Kind Code:

A

Abstract:

To provide a diesel particulate filter (DPF) with a high collecting rate of PM and a large amount of collected PM per unit volume.

This DPF comprises heat resistant fiber filter layers (A1)-(An) (n is an integer of 2 or more) that are laminated. In the DPF, an average value (a1)-(an) of a fiber diameter of the heat resistant fibers included in each of heat resistant fiber filter layers (A1)-(An) satisfies the following expressions: (1) (a1)(a2)...(an-1)(an), and (2) (a1)(an) (n is an integer of 2 or more). At least one of the heat resistant fiber filter layers (A1)-(An) is a different diameter fiber blend filter including heat resistant fibers (T1)-(Tm) (m is an integer of 2 or more), and a fiber diameter (t1)-(Tm) of each heat resistant fiber (T1)-(Tm) satisfies: (3) (t1)(t2)...(tm-1)(tm), and (4) (t1)(tm) (m is an integer of 2 or more).

Inventors:

SUISO FUMIHIRO
ISHIZAKI KEITA
SHIMATANI KAZUNORI
MATSUMOTO MASAHIKO

Application Number:

JP2007151576A

Publication Date:

December 18, 2008

Filing Date:

June 07, 2007

Export Citation:

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Assignee:

HONDA MOTOR CO LTD
TOSCO CO LTD

International Classes:

F01N3/02; B01D39/14; B01D46/00

Domestic Patent References:

JP2005030280A	2005-02-03
JP2003172117A	2003-06-20
JP2002326009A	2002-11-12
JP2005040646A	2005-02-17
JP2005030279A	2005-02-03

Foreign References:

WO2006072606A2

2006-07-13

Attorney, Agent or Firm:

Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama
Hironobu Hattori

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