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US-12620297-B2 - Treatment device, treatment method, and exhaust gas treatment system

US12620297B2US 12620297 B2US12620297 B2US 12620297B2US-12620297-B2

Abstract

A treatment device includes an acquisition unit configured to acquire regeneration information, which is information related to a regeneration interval of a filter that collects a particulate matter in an exhaust gas of an engine, and ash information, which is information indicating an estimated value of a deposition amount of ash deposited on the filter, a determination unit configured to determine whether or not the filter needs to be cleaned based on the regeneration information and the estimated value indicated by the ash information, and a notification unit configured to issue a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned.

Inventors

  • Yoshitoshi Nagado
  • Akira Ito

Assignees

  • KOMATSU LTD.

Dates

Publication Date
20260505
Application Date
20221108
Priority Date
20220121

Claims (5)

  1. 1 . A treatment device comprising: an acquisition unit configured to acquire regeneration information, which is information related to a regeneration interval of a filter that collects a particulate matter in an exhaust gas of an engine, and ash information, which is information indicating an estimated value of a deposition amount of ash deposited on the filter; a determination unit configured to determine whether or not the filter needs to be cleaned based on the regeneration information and the estimated value indicated by the ash information; and a notification unit configured to issue a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned, wherein the regeneration information includes a first number of times, which is a number of times at which the regeneration interval does not exceed a predetermined second time and is within a first time shorter than the second time, and the determination unit determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to a predetermined first ash deposition amount threshold value and the first number of times is greater than or equal to a predetermined first number-of-times threshold value, wherein the regeneration information further includes a second number of times, which is a number of times at which the regeneration interval is continuously within the second time, the determination unit further determines that preparation for cleaning the filter is necessary in a case where the estimated value is greater than or equal to a predetermined second ash deposition amount threshold value and the second number of times is greater than or equal to a predetermined second number-of-times threshold value, and the notification unit further issues a notification that the preparation for cleaning the filter is necessary in a case where it is determined that the preparation for cleaning the filter is necessary.
  2. 2 . A treatment device comprising: an acquisition unit configured to acquire regeneration information, which is information related to a regeneration interval of a filter that collects a particulate matter in an exhaust gas of an engine, and ash information, which is information indicating an estimated value of a deposition amount of ash deposited on the filter; a determination unit configured to determine whether or not the filter needs to be cleaned based on the regeneration information and the estimated value indicated by the ash information; and a notification unit configured to issue a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned, wherein the acquisition unit further acquires information indicating an atmospheric pressure, the regeneration information includes a first number of times, which is a number of times at which the regeneration interval does not exceed a predetermined second time and is within a first time shorter than the second time, and a second number of times, which is a number of times at which the regeneration interval is continuously within the second time, the treatment device further comprises a calculation unit configured to calculate an allowable ash deposition amount threshold value corresponding to an allowable ash deposition amount that changes according to the atmospheric pressure, the determination unit determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to a predetermined first ash deposition amount threshold value and the first number of times is greater than or equal to a predetermined first number-of-times threshold value, determines that preparation for cleaning the filter is necessary in a case where the estimated value is greater than or equal to a predetermined second ash deposition amount threshold value and the second number of times is greater than or equal to a predetermined second number-of-times threshold value, and determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to the allowable ash deposition amount threshold value, and the notification unit issues a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned, and issues a notification that the preparation for cleaning the filter is necessary in a case where it is determined that the preparation for cleaning the filter is necessary.
  3. 3 . A treatment device comprising: an acquisition unit configured to acquire regeneration information, which is information related to a regeneration interval of a filter that collects a particulate matter in an exhaust gas of an engine, and ash information, which is information indicating an estimated value of a deposition amount of ash deposited on the filter; a determination unit configured to determine whether or not the filter needs to be cleaned based on the regeneration information and the estimated value indicated by the ash information; and a notification unit configured to issue a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned, wherein the determination unit further determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to a third ash deposition amount threshold value which is set according to an atmospheric pressure.
  4. 4 . The treatment device according to claim 1 , wherein the determination unit further determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to a third ash deposition amount threshold value which is set according to an atmospheric pressure.
  5. 5 . The treatment device according to claim 2 , wherein the determination unit further determines that the filter needs to be cleaned in a case where the estimated value is greater than or equal to a third ash deposition amount threshold value which is set according to an atmospheric pressure.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is related to co-pending application: “TREATMENT DEVICE, TREATMENT METHOD, AND EXHAUST GAS TREATMENT SYSTEM” filed even date herewith in the names of Yoshitoshi NAGADO and Akira ITO as a national phase entry of PCT/JP2022/041541, which application is assigned to the assignee of the present application and is incorporated by reference herein. TECHNICAL FIELD The present disclosure relates to a treatment device, a treatment method, and an exhaust gas treatment system. Priority is claimed on Japanese Patent Application No. 2022-007743, filed in Japan on Jan. 21, 2022, the content of which is incorporated herein by reference. BACKGROUND ART Patent Document 1 discloses an exhaust gas post-treatment device that determines whether or not ash, greater than or equal to a specified amount, is deposited on a filter that collects a particulate matter (PM) included in an exhaust gas. The particulate matter includes soot, an unburned residual fuel, ash (also referred to as “oil ash”), and the like. The ash is a combustion residue of a metal component such as calcium contained in engine oil as an additive. In the device disclosed in Patent Document 1, when the particulate matter is deposited on the filter, a regeneration operation of heating the filter to increase a temperature of the filter and burning and removing the particulate matter deposited on the filter is performed. However, the ash cannot be removed in the regeneration operation. In the device disclosed in Patent Document 1, in a case where an interval for performing the regeneration operation is shortened, it is determined that the ash greater than or equal to a specified amount is deposited on the filter. In addition, in the device disclosed in Patent Document 1, in a case where it is determined that the ash greater than or equal to the specified amount is deposited, a warning is issued that the filter needs to be cleaned. In the device disclosed in Patent Document 1, whether or not the regeneration operation is necessary is determined as follows. That is, in the device disclosed in Patent Document 1, it is determined that the regeneration operation is necessary in a case where a value corresponding to a deposition amount, which is obtained based on a differential pressure between an upstream-side pressure value and a downstream-side pressure value of the filter, an exhaust flow rate, and an exhaust gas temperature, reaches a predetermined value. CITATION LIST Patent Document [Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2009-138704 SUMMARY OF INVENTION Technical Problem In the device disclosed in Patent Document 1, it is determined that the filter needs to be cleaned in a case where the interval for performing the regeneration operation is shortened. However, a rate at which the ash is deposited on the filter varies depending on how a vehicle is used. In addition, the interval for performing the regeneration operation also varies depending on how the vehicle is used. Therefore, there is a problem in that, depending on how the vehicle is used, there may be a case where a timing at which cleaning of the filter should be performed cannot be appropriately determined. The present disclosure has been made to solve the above-described problems, and an object of the present disclosure is to provide a treatment device, a treatment method, and an exhaust gas treatment system capable of appropriately determining a timing at which cleaning of a filter should be performed. Solution to Problem A treatment device according to the present disclosure includes an acquisition unit configured to acquire regeneration information, which is information related to a regeneration interval of a filter that collects a particulate matter in an exhaust gas of an engine, and ash information, which is information indicating an estimated value of a deposition amount of ash deposited on the filter, a determination unit configured to determine whether or not the filter needs to be cleaned based on the regeneration information and the estimated value indicated by the ash information, and a notification unit configured to issue a notification that the filter needs to be cleaned in a case where it is determined that the filter needs to be cleaned. Advantageous Effects of Invention According to the treatment device, the treatment method, and the exhaust gas treatment system of the present disclosure, a timing at which cleaning of the filter should be performed can be appropriately determined. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a system diagram showing a configuration example of an engine control system according to an embodiment of the present disclosure. FIG. 2 is a block diagram representing a configuration example of a control device 100 shown in FIG. 1. FIG. 3 is a schematic diagram for describing a calculation unit 104 shown in FIG. 2. FIG. 4 is a schematic diagram for describing the calculatio