公开(公告)号：US20150219029A1

公开(公告)日：2015-08-06

申请号：US14366478

申请日：2012-09-13

Applicant: Komatsu Ltd.

Inventor： Mitsuru Nakashima ,  Tadashi Iijima ,  Kaoru Sakurai ,  Kouichi Okaya ,  Takashi Sakasai

IPC: F02D41/00 ,  F02D41/18

CPC classification number: F02D41/0052 ,  F02D41/0065 ,  F02D41/0072 ,  F02D41/1461 ,  F02D41/1462 ,  F02D41/18 ,  F02D41/2474 ,  F02M26/15 ,  Y02T10/47

Abstract: A diesel engine, includes: an exhaust gas recirculation device that recirculates an exhaust gas emitted from the diesel engine to an intake side of the diesel engine; an intake air amount sensor that measures an intake air amount of the diesel engine; a NOx measurement sensor that measures NOx contained in the exhaust gas emitted from the diesel engine; and a control device that obtains a correction value for correcting a measured value by the intake air amount sensor based on a difference between first information on NOx obtained based on information on a rotation speed of the diesel engine and information on a load and second information on NOx measured by the NOx measurement sensor to control the exhaust gas recirculation device based on the measured value by the intake air amount sensor corrected using the correction value.

Abstract translation: 柴油发动机包括：排气再循环装置，其将从柴油发动机排放的废气再循环到柴油发动机的进气侧; 进气量传感器，其测量所述柴油发动机的进气量; NOx测量传感器，其测量从所述柴油发动机排出的废气中所含的NOx; 以及控制装置，其基于基于关于柴油发动机的转速的信息和关于负载的信息的信息获得的关于NOx的第一信息与关于负载的信息的第二信息之间的差，获取由进气量传感器校正测量值的校正值 由NOx测量传感器测量的NOx，以根据通过使用校正值校正的进气量传感器的测量值来控制废气再循环装置。

公开(公告)号：US20220267995A1

公开(公告)日：2022-08-25

申请号：US17634565

申请日：2020-09-18

Applicant: Komatsu Ltd.

Inventor： Tadashi Iijima ,  Tomoyuki Matsuda ,  Keiichi Arai

IPC: E02F9/22 ,  F02D29/04 ,  F02D41/30

Abstract: An engine control system controls a work machine including an engine, a fuel injection device that injects fuel into the engine, and a hydraulic pump that is driven by the engine. The rotation state amount specification unit specifies a rotation state amount related to rotation of the engine. The injection amount determination unit determines a fuel injection amount by the fuel injection device based on the rotation state amount.

公开(公告)号：US11795662B2

公开(公告)日：2023-10-24

申请号：US17634565

申请日：2020-09-18

Applicant: Komatsu Ltd.

Inventor： Tadashi Iijima ,  Tomoyuki Matsuda ,  Keiichi Arai

IPC: E02F9/22 ,  F02D29/04 ,  F02D41/30

CPC classification number: E02F9/2246 ,  F02D29/04 ,  F02D41/3011 ,  E02F9/2225 ,  E02F9/2296 ,  F02D2200/0614 ,  F02D2200/101

Abstract: An engine control system controls a work machine including an engine, a fuel injection device that injects fuel into the engine, and a hydraulic pump that is driven by the engine. The rotation state amount specification unit specifies a rotation state amount related to rotation of the engine. The injection amount determination unit determines a fuel injection amount by the fuel injection device based on the rotation state amount.

公开(公告)号：US09382690B2

公开(公告)日：2016-07-05

申请号：US13978306

申请日：2012-11-19

Applicant: Komatsu Ltd.

Inventor： Kozo Okuda ,  Tadashi Iijima ,  Godo Ozawa ,  Muneo Harada ,  Naoto Ikeda

IPC: E02F9/08 ,  B60K13/04 ,  F01N13/02 ,  F01N13/18 ,  B60K5/12 ,  F01N3/035

CPC classification number: E02F9/0866 ,  B60K5/12 ,  B60K13/04 ,  F01N3/035 ,  F01N13/02 ,  F01N13/1805 ,  F01N2470/18 ,  F01N2470/22

Abstract: An engine unit mounted to a vehicle frame, the engine unit includes: an engine; an engine support mechanism to be coupled to the vehicle frame, with at least one vibration absorbing mechanism disposed on each of both sides of the engine in an orthogonal direction to a crankshaft of the engine, to support the engine; an aftertreatment device to purify exhaust gas emitted from the engine; a base bracket provided to the engine support mechanism; and an upper bracket detachably fixed and mounted to the base bracket, the upper bracket supporting the aftertreatment device.

Abstract translation: 发动机单元安装在车架上，发动机单元包括：发动机; 发动机支撑机构，其耦合到车架，其中至少一个振动吸收机构设置在与发动机的曲轴正交的方向上的发动机的两侧的每一侧上，以支撑发动机; 用于净化从发动机排出的废气的后处理装置; 提供给发动机支撑机构的基座支架; 以及可拆卸地固定并安装到所述基座支架的上支架，所述上支架支撑所述后处理装置。

公开(公告)号：US20150211209A1

公开(公告)日：2015-07-30

申请号：US13978306

申请日：2012-11-19

Applicant: KOMATSU LTD.

Inventor： Kozo Okuda ,  Tadashi Iijima ,  Godo Ozawa ,  Muneo Harada ,  Naoto Ikeda

IPC: E02F9/08 ,  B60K5/12 ,  B60K13/04 ,  F01N3/035

CPC classification number: E02F9/0866 ,  B60K5/12 ,  B60K13/04 ,  F01N3/035 ,  F01N13/02 ,  F01N13/1805 ,  F01N2470/18 ,  F01N2470/22

Abstract: An engine unit mounted to a vehicle frame, the engine unit includes: an engine; an engine support mechanism to be coupled to the vehicle frame, with at least one vibration absorbing mechanism disposed on each of both sides of the engine in an orthogonal direction to a crankshaft of the engine, to support the engine; an aftertreatment device to purify exhaust gas emitted from the engine; a base bracket provided to the engine support mechanism; and an upper bracket detachably fixed and mounted to the base bracket, the upper bracket supporting the aftertreatment device.

Abstract translation: 发动机单元安装在车架上，发动机单元包括：发动机; 发动机支撑机构，其耦合到车架，其中至少一个振动吸收机构设置在与发动机的曲轴正交的方向上的发动机的两侧的每一侧上，以支撑发动机; 用于净化从发动机排出的废气的后处理装置; 提供给发动机支撑机构的基座支架; 以及可拆卸地固定并安装到所述基座支架的上支架，所述上支架支撑所述后处理装置。

公开(公告)号：US09539546B2

公开(公告)日：2017-01-10

申请号：US14427445

申请日：2013-07-24

Applicant: Komatsu Ltd.

Inventor： Izumi Nishizawa ,  Tadashi Iijima ,  Takumi Sugihara

IPC: B01D53/94 ,  F01N3/18 ,  F01N3/20 ,  F01N3/021 ,  F01N13/00

CPC classification number: B01D53/9495 ,  B01D53/9431 ,  F01N3/021 ,  F01N3/208 ,  F01N13/009 ,  F01N13/011 ,  F01N2410/00 ,  F01N2560/026 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1406 ,  F01N2900/1411 ,  Y02T10/24

Abstract: An exhaust gas processing device includes a NOx detection sensor, a first catalyst provided to a first branch pipe, a second catalyst provided to a second branch pipe, a first pressure sensor and a second pressure sensor which are arranged on the upstream side of the first catalyst and the second catalyst and which detect pressures in the first branch pipe and the second branch pipe, and a control device that obtains flow rates of exhaust gas flowing through the first branch pipe and the second branch pipe based on detection values of the first pressure sensor and the second pressure sensor and obtains amounts of reducing agent to be given to the first catalyst and the second catalyst from the obtained flow rates and a concentration of NOx of the exhaust gas.

Abstract translation: 废气处理装置包括NOx检测传感器，设置在第一分支管上的第一催化剂，设置在第二分支管上的第二催化剂，第一压力传感器和第二压力传感器， 催化剂和第二催化剂，并且其检测第一分支管和第二分支管中的压力;以及控制装置，其基于第一压力的检测值来获得流过第一分支管和第二分支管的排气的流量 传感器和第二压力传感器，并从获得的流量和排气的NOx浓度获得给予第一催化剂和第二催化剂的还原剂的量。

公开(公告)号：US20150224447A1

公开(公告)日：2015-08-13

申请号：US14427445

申请日：2013-07-24

Applicant: KOMATSU LTD.

Inventor： Izumi Nishizawa ,  Tadashi Iijima ,  Takumi Sugihara

IPC: B01D53/94

CPC classification number: B01D53/9495 ,  B01D53/9431 ,  F01N3/021 ,  F01N3/208 ,  F01N13/009 ,  F01N13/011 ,  F01N2410/00 ,  F01N2560/026 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1406 ,  F01N2900/1411 ,  Y02T10/24

Abstract: An exhaust gas processing device includes a NOx detection sensor, a first catalyst provided to a first branch pipe, a second catalyst provided to a second branch pipe, a first pressure sensor and a second pressure sensor which are arranged on the upstream side of the first catalyst and the second catalyst and which detect pressures in the first branch pipe and the second branch pipe, and a control device that obtains flow rates of exhaust gas flowing through the first branch pipe and the second branch pipe based on detection values of the first pressure sensor and the second pressure sensor and obtains amounts of reducing agent to be given to the first catalyst and the second catalyst from the obtained flow rates and a concentration of NOx of the exhaust gas.

Abstract translation: 废气处理装置包括NOx检测传感器，设置在第一分支管上的第一催化剂，设置在第二分支管上的第二催化剂，第一压力传感器和第二压力传感器， 催化剂和第二催化剂，并且其检测第一分支管和第二分支管中的压力;以及控制装置，其基于第一压力的检测值来获得流过第一分支管和第二分支管的排气的流量 传感器和第二压力传感器，并从获得的流量和排气的NOx浓度获得给予第一催化剂和第二催化剂的还原剂的量。