EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE

Title:

EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2014/076767

Kind Code:

A1

Abstract:

In the present invention, a particulate filter disposed within an engine exhaust pathway is provided with: an exhaust gas inflow pathway and an exhaust gas outflow pathway disposed in alternation; and a porous partition wall that partitions the exhaust gas inflow pathway and the exhaust gas outflow pathway from each other. In the partition wall, a coated region at which the substrate surface is covered by a coating layer of which the average pore size is smaller than the average pore size of the partition wall substrate, and a non-coated region at the downstream side of the coated region and at which the substrate surface is not covered by the coating layer are demarcated, and in the non-coated region, ash contained in the exhaust gas can pass through the partition wall. When the amount of particulate matter collected at the non-coated region is calculated and it is determined that the amount of particulate matter collection exceeds an allowable upper limit, PM elimination control is performed for eliminating particulate matter from the particulate filter.

Inventors:

NISHIOKA HIROMASA (JP)
ITOH KAZUHIRO (JP)
IMAI DAICHI (JP)
KOUTAKE RYOTA (JP)

Application Number:

PCT/JP2012/079401

Publication Date:

May 22, 2014

Filing Date:

November 13, 2012

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
NISHIOKA HIROMASA (JP)
ITOH KAZUHIRO (JP)
IMAI DAICHI (JP)
KOUTAKE RYOTA (JP)

International Classes:

F01N3/023; F01N3/022; F01N3/035

Foreign References:

JP2012117487A	2012-06-21
JP2004239199A	2004-08-26
JP2002519186A	2002-07-02
JP2005305417A	2005-11-04
JP2004293413A	2004-10-21
JP2000018019A	2000-01-18

Other References: