Active regeneration control device for a diesel particulate filter

Patent metadata

Field	Value
Publication number	US-9347348-B2
Application number	US-201214368168-A
Country	US
Kind code	B2
Filing date	Dec 4, 2012
Priority date	Dec 23, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

An active regeneration control device for a diesel particulate filter (DPF) according to the present disclosure includes: an active regeneration determining unit judging an active regeneration time of the (DPF); an active regeneration signal generating unit generating an active regeneration signal according to the decision of the active regeneration determining unit; and an active regeneration inducing unit. The active regeneration inducing unit induces the active regeneration when the active regeneration is not performed after the active regeneration signal is generated.

First claim

What is claimed is:

1. An active regeneration control device for a diesel particulate filter (DPF), comprising:
an electronic control unit configured to perform active regeneration determining processes including an ash learning based process which, based on accumulated engine driving time measurement value since succeeding in a previous ash learning, decides active regeneration when the accumulated engine driving time measurement value reaches a predetermined value;
wherein the electronic control unit is further configured to generate an active regeneration signal according to a decision of the active regeneration determining processes performed by the electronic control unit; and
wherein the electronic control unit is further configured to induce the active regeneration when the active regeneration is not performed after the active regeneration signal is generated.

2. The device according to claim 1 , wherein the active regeneration processes include a DPF regeneration based process that, based on previous regeneration data, extracts the number of times DPF regeneration is performed which is abnormally progressed, and decides active regeneration when the number of DPF regeneration times which is abnormally progressed is equal to or more than a predetermined value.

3. The device according to claim 1 , wherein the active regeneration processes include a soot amount based process that, based on a soot measurement amount in the DPF, decides active regeneration when the soot measurement amount reaches a predetermined value.

4. The device according to claim 1 , wherein the active regeneration processes include an in-DPF soot distribution based process that, based on accumulated engine driving time measurement value after a DPF regeneration, decides active regeneration when the accumulated engine driving time measurement value reaches a predetermined value.

5. The device according to claim 1 , wherein the active regeneration processes include a DPF regeneration frequency based process that, based on an accumulated regeneration time measurement value for a predetermined engine driving time, decides active regeneration when the accumulated regeneration time reaches a predetermined value.

Assignees

• Doosan Infracore Co Ltd

Inventors

• Yu Jin Hwan

Classifications

• F01N2590/08

  for heavy duty applications, e.g. trucks, buses, tractors, locomotives · CPC title

• F01N9/002

  of filter regeneration · CPC title

• F01N2900/1606

  Particle filter loading or soot amount · CPC title

• F01N2900/0422

  measuring the elapsed time · CPC title

• F01N2900/0412

  using pre-calibrated maps, tables or charts · CPC title