公开(公告)号：US20190186384A1

公开(公告)日：2019-06-20

申请号：US16212794

申请日：2018-12-07

Applicant: KUBOTA Corporation

Inventor： Akihiko KAI ,  Katsushi INOUE ,  Masahiko SUGIMOTO ,  Kentaro KITA ,  Hideo SHIMOJI ,  Hiroki MURATA ,  Gen NAKAMURA

IPC: F02D9/04 ,  F01P3/02 ,  F02B37/02 ,  F01N3/20 ,  F01P3/20 ,  F01N11/00 ,  F02M26/28

Abstract: An engine promoting activation of a catalyst is provided, including an exhaust manifold, an exhaust lead-out path led out from a manifold exit of the exhaust manifold, a catalyst case provided on the exhaust lead-out path, and a catalyst housed in the catalyst case. The exhaust manifold and the catalyst case are extended in the front-back direction of crankshaft extension and disposed side by side orthogonally to the front-back direction. The engine may further include a supercharger attached to the exit of the exhaust manifold, and the catalyst case is attached to a turbine exit of the supercharger. The engine may further include an exhaust relay pipe attached to the exit of the exhaust manifold, and the catalyst case is attached to a relay pipe exit of the exhaust relay pipe. The engine may further include an exhaust throttle device provided on an exhaust downstream side of the catalyst.

公开(公告)号：US20170208651A1

公开(公告)日：2017-07-20

申请号：US15366723

申请日：2016-12-01

Applicant: KUBOTA Corporation

Inventor： Kazunari TSUJINO ,  Yasuo FUJII ,  Mikio ISHIDA ,  Kouji HORIKIRI ,  Katsushi INOUE

IPC: H05B6/10 ,  F01M5/00

CPC classification number: H05B6/108 ,  B60H1/2221 ,  F01M5/001 ,  F01M2013/0027 ,  F02M25/06 ,  F02M31/125 ,  F24H1/105 ,  F24H1/142 ,  F24H2250/08 ,  Y02T10/121 ,  Y02T10/126

Abstract: A fluid heating device of an engine is provided that is capable of reducing power consumption of a heat source required for heating a fluid. The fluid heating device of the engine includes a heat radiation pipe through which a fluid passes and an induction heating coil. Heat of the heat radiation pipe that is inductively heated by the induction heating coil is radiated to the fluid. A whole periphery of the heat radiation pipe is surrounded by the induction heating coil. The induction heating coil is supported by the heat radiation pipe. A holder is included, and the induction heating coil is supported by the heat radiation pipe via the holder. The holder, to which the induction heating coil is attached, is detachably supported by the heat radiation pipe.

公开(公告)号：US20170183999A1

公开(公告)日：2017-06-29

申请号：US15371911

申请日：2016-12-07

Applicant: KUBOTA Corporation

Inventor： Katsushi INOUE ,  Mikio ISHIDA ,  Ryota SAKAI

IPC: F01N3/20 ,  F01N11/00 ,  F01N13/00 ,  F01N9/00 ,  F01N3/035 ,  B01D46/00 ,  B01D53/94 ,  F01N3/025 ,  F02N11/08

CPC classification number: F01N3/2033 ,  B01D46/0027 ,  B01D46/0063 ,  B01D53/9431 ,  B01D53/944 ,  B01D53/9495 ,  B01D2279/30 ,  F01N3/021 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/2013 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N9/002 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/16 ,  F01N2610/03 ,  F01N2610/146 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1606 ,  F02D41/0235 ,  F02N11/0803 ,  F02N11/101 ,  F02N2300/2011 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

Abstract: An exhaust apparatus for a diesel engine rapidly burns an unburned deposit in an upstream exhaust catalyst with heat of a heater. The exhaust apparatus includes a downstream exhaust cleaner, an upstream exhaust catalyst provided in an exhaust passage, upstream of the downstream exhaust cleaner, a heater disposed at an exhaust inlet of the upstream exhaust catalyst, and an engine starter apparatus. A control unit controls the power supply to the heater and an engine start process is performed by the engine starter apparatus. A start command unit is connected to the control unit. When the engine has been stopped and then the start command unit gives the control unit a start command, the control unit powers the heater without performing an engine start process, thereby keeping the engine stopped for a predetermined period of time after the start command has been given, and subsequently performing the engine start process.

公开(公告)号：US20150089925A1

公开(公告)日：2015-04-02

申请号：US14477968

申请日：2014-09-05

Applicant: KUBOTA Corporation

Inventor： Kentarou KITA ,  Tamotsu KUNO ,  Katsushi INOUE ,  Yuuji TAKEMURA ,  Yuuki ISHII ,  Yusuke KOMEMUSHI ,  Tomoya HASEGAWA

IPC: F01N3/025 ,  F01N9/00

CPC classification number: F01N9/002 ,  F01N3/023 ,  F01N2430/06 ,  F01N2430/085 ,  F01N2430/10 ,  F01N2550/04 ,  F01N2900/0408 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1606 ,  F02D41/0002 ,  F02D41/025 ,  F02D41/029 ,  F02D41/1446 ,  F02D2011/102 ,  F02D2200/0802 ,  F02D2200/0812 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/47

Abstract: The present invention provides a diesel engine capable of preventing a PM accumulation amount from increasing excessively. If DOC inlet exhaust gas temperature (“IEGT”) does not reach a predetermined value T0, a control unit carries out air intake amount feedback control (“AIAFC”), and a target value of intake throttling is set to a predetermined air intake amount. If the DPF regenerating processing is not started even if elapsed time reaches a predetermined value t after AIAFC is started in a state where the DOC IEGT does not reach the predetermined value T0, the control unit changes AIAFC to exhaust gas temperature feedback control (“EGTFC”). In EGTFC, the control unit changes a target value of intake throttling to a predetermined DOC IEGT T0. If application of a load exceeding a predetermined amount is detected before the DOC IEGT reaches the predetermined value T0, the control unit returns EGTFC to AIAFC.

Abstract translation: 本发明提供一种能够防止PM堆积量过度增加的柴油发动机。 如果DOC入口排气温度（“IEGT”）未达到预定值T0，则控制单元执行进气量反馈控制（“AIAFC”），将进气节流的目标值设定为预定的进气量 。 即使在DOCIEGT未达到规定值T0的状态下AIAFC开始后经过时间达到规定值t，DPF再生处理也不开始，控制部将AIAFC变更为排气温度反馈控制（“EGTFC “）。 在EGTFC中，控制单元将进气节流的目标值改变为预定的DOC IEGT T0。 如果在DOC IEGT达到预定值T0之前检测到超过预定量的负载的应用，则控制单元将EGTFC返回到AIAFC。

公开(公告)号：US20190390588A1

公开(公告)日：2019-12-26

申请号：US16431995

申请日：2019-06-05

Applicant: KUBOTA Corporation

Inventor： Katsushi INOUE ,  Masanori FUJIWARA ,  Hiroaki OKANO

IPC: F01N9/00 ,  F01N3/023 ,  F01N11/00 ,  B01D46/00 ,  B01D46/44 ,  B01D46/46

Abstract: There is provided an exhaust treatment device for a diesel engine capable of accurately estimating an amount of ash deposition. In the exhaust treatment device, an ash deposition estimation device estimates an amount of ash deposition on a DPF after ending of regenerating treatment for the DPF, based on data regarding differential pressure and exhaust flow rate stored in a memory device over a period immediately before the end of regeneration, the period ranging from the end point of regenerating treatment for the DPF to a point in time going back a predetermined duration. An electronic control device preferably makes an alarm device issue an alarm, upon arrival of an estimated value of ash deposition at a predetermined alarm request value.

公开(公告)号：US20190323406A1

公开(公告)日：2019-10-24

申请号：US16391690

申请日：2019-04-23

Applicant: KUBOTA Corporation

Inventor： Katsushi INOUE ,  Koichi FUNAKI ,  Masanori FUJIWARA ,  Tamotsu KUNO ,  Kentaro KITA ,  Yuki YOSHITA

IPC: F01N9/00 ,  F01N3/023 ,  F01N11/00

Abstract: There is provided an exhaust treatment device for a diesel engine that can prevent unnecessary alarm for ash deposition from being issued. In the exhaust treatment device, a timer measures integrated time of a state of non-regenerative operation which ranges from an end of DPF regeneration to a next time point where the differential pressure reaches a regeneration request value. A counter acquires the short interval count if the integrated time is a short interval shorter than a predetermined decision time. An alarm device issues an alarm if the consecutive short interval count reaches a predetermined plural necessary count for alarm. A short interval count having been already acquired is preferably reset to 0 if the integrated time of the state of non-regenerative operation is a long interval, not shorter than a predetermined decision time, before the short interval count reaches the predetermined necessary count for alarm.

公开(公告)号：US20190186315A1

公开(公告)日：2019-06-20

申请号：US16212839

申请日：2018-12-07

Applicant: KUBOTA Corporation

Inventor： Katsushi INOUE ,  Hiroaki OKANO ,  Masanori FUJIWARA

IPC: F01N3/023 ,  F01N9/00 ,  F01N3/025 ,  F01N3/035 ,  F01N11/00

CPC classification number: F01N3/0235 ,  F01N3/0253 ,  F01N3/035 ,  F01N9/002 ,  F01N11/002 ,  F01N2240/36 ,  F01N2430/06 ,  F01N2560/06 ,  F01N2900/0416 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1626 ,  F01P3/20 ,  F01P2060/00 ,  F02D9/04 ,  F02D41/025 ,  F02D41/029 ,  F02D43/00 ,  F02D2200/0802

Abstract: An engine promoting DPF regeneration processing is provided. Catalyst activation processing and thereafter DPF regeneration processing are performed under control of a device. In the catalyst activation processing, a target temperature of exhaust at an exhaust exit of a catalyst is set to be in a first temperature region, and then the opening degree of an exhaust throttle device is controlled. In the DPF regeneration processing, the target temperature is set to be in a second temperature region. A target temperature of the exhaust at an exhaust inlet of a DPF is set to be in a third temperature region. The opening degree of the exhaust throttle device is controlled, and unburned fuel is supplied into the exhaust. The temperature regions are set to be successively higher, and a temperature difference between successive temperature regions is set to be successively lower.

公开(公告)号：US20130255236A1

公开(公告)日：2013-10-03

申请号：US13790767

申请日：2013-03-08

Applicant: KUBOTA CORPORATION

Inventor： Yuuki ISHII ,  Katsushi INOUE

IPC: F01N3/00

CPC classification number: F01N3/00 ,  F01N3/023 ,  F01N9/002 ,  F01N2900/0422 ,  F01N2900/0601 ,  Y02T10/47

Abstract: Provided is an exhaust gas processing device for a diesel engine which can carry out sufficient regeneration processing of a DPF. A DPF regeneration control section continues normal regeneration processing by a DPF regeneration control section when an accelerated regeneration starting operation section does not perform accelerated regeneration starting operation after notification of accelerated regeneration requiring information is started. The DPF regeneration control section prohibits the normal regeneration processing, and an accelerated regeneration re-requirement notification section starts notification of accelerated regeneration re-requiring information, when a PM accumulation amount estimate becomes equal to or higher than an accelerated regeneration re-requirement determination value J4. Thereafter, the regeneration processing of the DPF is not carried out unless the accelerated regeneration starting operation section starts the accelerated regeneration starting operation to cause the DPF regeneration control section to carry out the accelerated regeneration processing by the DPF regeneration section.

Abstract translation: 提供一种能够进行DPF的充分再生处理的柴油发动机的废气处理装置。 DPF再生控制部在通过加速再生要求信息开始通知之后，加速再生开始动作部不进行加速再生开始动作时，通过DPF再生控制部继续正常再生处理。 DPF再生控制部禁止正常再生处理，并且当PM累积量估计值等于或高于加速再生再确定值时，加速再生再次要求通知部开始加速再生再生要求信息的通知 J4。 此后，除非加速再生开始运转部开始加速再生开始动作，DPF再生控制部通过DPF再生部进行加速再生处理，否则不进行DPF的再生处理。