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公开(公告)号：US10422265B2
公开(公告)日：2019-09-24
申请号：US15511264
申请日：2016-12-14
Applicant: Komatsu, Ltd.
Inventor： Nobuaki Motegi , Yuta Okubo , Satoshi Nakazawa , Shinichi Saitou
Abstract: An exhaust gas purifying system includes a differential pressure detector that detects a differential pressure between an inlet/outlet of a filter, a flow rate detector that detects a flow rate of exhaust gas in the filter, a differential based-deposition-amount calculator that calculates a differential-based deposition amount of particulate matters in the filter based on detection results of the differential pressure detector and the flow rate detector, a regeneration temperature setting unit that sets a regeneration processing temperature of the filter based on the calculated differential-based deposition amount, and a regeneration processing unit that performs a regeneration processing of the filter based on the set regeneration processing temperature. The regeneration temperature setting unit sets a first regeneration processing temperature at a start of the regeneration processing and a second regeneration processing temperature higher than the first regeneration processing temperature when the differential-based deposition amount falls at or below a predetermined threshold.
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Patent Agency Ranking
公开(公告)号：US20240144744A1
公开(公告)日：2024-05-02
申请号：US18272615
申请日：2022-03-04
Applicant: Komatsu Ltd.
Inventor： Yoshitoshi Nagado , Shinichi Saitou , Toshio Kanda
CPC classification number: G07C5/0808 , F01N3/023 , F01N3/106 , G07C5/006
Abstract: An aspect of the present invention relates to a control device for an exhaust gas post-treatment device that includes a filter that collects a particulate substance in exhaust gas of an engine and an oxidation catalyst provided upstream of the filter, and that is configured to regenerate the filter by an action of the oxidation catalyst, the control device including a notification unit configured to, in a case in which forced regeneration for forcibly increasing a temperature of the exhaust gas is carried out, when the number of times it is estimated that the temperature of the exhaust gas is lower than a light-off temperature for a period of time equal to or longer than a prescribed period of time exceeds a prescribed threshold, issue a notification indicating that there is a problem in an operation state of the engine.
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公开(公告)号：US12230076B2
公开(公告)日：2025-02-18
申请号：US18272615
申请日：2022-03-04
Applicant: Komatsu Ltd.
Inventor： Yoshitoshi Nagado , Shinichi Saitou , Toshio Kanda
Abstract: An aspect of the present invention relates to a control device for an exhaust gas post-treatment device that includes a filter that collects a particulate substance in exhaust gas of an engine and an oxidation catalyst provided upstream of the filter, and that is configured to regenerate the filter by an action of the oxidation catalyst, the control device including a notification unit configured to, in a case in which forced regeneration for forcibly increasing a temperature of the exhaust gas is carried out, when the number of times it is estimated that the temperature of the exhaust gas is lower than a light-off temperature for a period of time equal to or longer than a prescribed period of time exceeds a prescribed threshold, issue a notification indicating that there is a problem in an operation state of the engine.
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4.发明申请公开(公告)号：US20150240696A1
公开(公告)日：2015-08-27
申请号：US14368880
申请日：2014-02-26
Applicant: KOMATSU LTD.
Inventor： Shinichi Saitou , Shouhei Nagasaka , Mitsuyoshi Kimura , Ken Nakano
CPC classification number: G01M15/106 , F02D41/029 , F02D41/1445 , F02D41/148 , F02D41/222 , F02D2200/0812 , G01M13/005 , G01N7/00 , Y02T10/40 , Y02T10/47
Abstract: A malfunction-determining device for an exhaust gas purifying device, which includes a filter device and a pressure measuring device, includes a usability determiner being configured to determine whether or not the pressure measuring device is usable based on a pressure measured by the pressure measuring device and an exhaust gas flow rate, a frozen-state determiner being configured to determine whether or not the pressure measuring device is frozen, and a malfunction determiner being configured to determine that the pressure measuring device has a malfunction when the usability determiner determines that the pressure measuring device is unusable and the frozen-state determiner determines that the pressure measuring device is not frozen.
Abstract translation: 一种排气净化装置的故障判定装置，其具备过滤装置和压力测量装置，其特征在于，具备可用性判定部，其基于由所述压力测量装置测定的压力，判定是否可以使用所述压力测量装置 和排气流量，冷冻状态确定器，其被配置为确定压力测量装置是否被冻结;以及故障确定器，其构造成当所述可用性确定器确定所述压力测量装置确定所述压力测量装置具有故障时，确定所述压力测量装置具有故障 测量装置不可用，并且冷冻状态确定器确定压力测量装置未被冻结。
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公开(公告)号：US20180163603A1
公开(公告)日：2018-06-14
申请号：US15511264
申请日：2016-12-14
Applicant: Komatsu, Ltd.
Inventor： Nobuaki Motegi , Yuta Okubo , Satoshi Nakazawa , Shinichi Saitou
Abstract: An exhaust gas purifying system includes a differential pressure detector that detects a differential pressure between an inlet/outlet of a filter, a flow rate detector that detects a flow rate of exhaust gas in the filter, a differential based-deposition-amount calculator that calculates a differential-based deposition amount of particulate matters in the filter based on detection results of the differential pressure detector and the flow rate detector, a regeneration temperature setting unit that sets a regeneration processing temperature of the filter based on the calculated differential-based deposition amount, and a regeneration processing unit that performs a regeneration processing of the filter based on the set regeneration processing temperature. The regeneration temperature setting unit sets a first regeneration processing temperature at a start of the regeneration processing and a second regeneration processing temperature higher than the first regeneration processing temperature when the differential-based deposition amount falls at or below a predetermined threshold.
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6.发明授权公开(公告)号：US09389146B2
公开(公告)日：2016-07-12
申请号：US14368880
申请日：2014-02-26
Applicant: KOMATSU LTD.
Inventor： Shinichi Saitou , Shouhei Nagasaka , Mitsuyoshi Kimura , Ken Nakano
CPC classification number: G01M15/106 , F02D41/029 , F02D41/1445 , F02D41/148 , F02D41/222 , F02D2200/0812 , G01M13/005 , G01N7/00 , Y02T10/40 , Y02T10/47
Abstract: A malfunction-determining device for an exhaust gas purifying device, which includes a filter device and a pressure measuring device, includes a usability determiner being configured to determine whether or not the pressure measuring device is usable based on a pressure measured by the pressure measuring device and an exhaust gas flow rate, a frozen-state determiner being configured to determine whether or not the pressure measuring device is frozen, and a malfunction determiner being configured to determine that the pressure measuring device has a malfunction when the usability determiner determines that the pressure measuring device is unusable and the frozen-state determiner determines that the pressure measuring device is not frozen.
Abstract translation: 一种排气净化装置的故障判定装置，其具备过滤装置和压力测量装置，其特征在于，具备可用性判定部，其基于由所述压力测量装置测定的压力，判定是否可以使用所述压力测量装置 和排气流量，冷冻状态确定器，其被配置为确定压力测量装置是否被冻结;以及故障确定器，其构造成当所述可用性确定器确定所述压力测量装置确定所述压力测量装置具有故障时，确定所述压力测量装置具有故障 测量装置不可用，并且冷冻状态确定器确定压力测量装置未被冻结。
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