公开(公告)号：US20190232225A1

公开(公告)日：2019-08-01

申请号：US16263376

申请日：2019-01-31

Applicant: Mazda Motor Corporation

Inventor： Hiroyuki Nishimura ,  Koichi Sugimoto ,  Masanobu Kanno

IPC: B01D53/94 ,  F01N3/035 ,  F01N3/08 ,  F01N13/00

CPC classification number: B01D53/9495 ,  B01D53/9459 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/103 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2430/085 ,  F01N2510/06 ,  F01N2900/0418 ,  F01N2900/08 ,  F01N2900/10 ,  F01N2900/1602 ,  F01N2900/1612 ,  F01N2900/1614 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/029 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2200/0806

Abstract: An exhaust emission control device for an engine is provided with a first purifying catalyst including an HC adsorbent that adsorbs HC at a low temperature and releases HC at a high temperature and a diesel oxidation catalyst capable of oxidizing HC, a second purifying catalyst including a NOx catalyst capable of storing NOx contained in exhaust, a NOx catalyst regenerator that regenerates the NOx catalyst while raising the temperature of the NOx catalyst, and HC controller that decides whether the amount of adsorbed HC that is HC adsorbed by the HC adsorbent is equal to or more than a preset reference amount and, when the amount of adsorbed HC is decided to be equal to or more than the reference amount, raises the temperature of the first purifying catalyst.

公开(公告)号：US09945277B2

公开(公告)日：2018-04-17

申请号：US15228477

申请日：2016-08-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Tanaka

IPC: F01N3/00 ,  F01N3/10 ,  F02D41/02 ,  F02D41/14 ,  F01N3/08 ,  F01N3/20

CPC classification number: F01N3/101 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/2073 ,  F01N2430/06 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0408 ,  F01N2900/1402 ,  F01N2900/1614 ,  F01N2900/1622 ,  F01N2900/1624 ,  F02D41/0235 ,  F02D41/028 ,  F02D41/1441 ,  F02D41/1455 ,  F02D2200/0806 ,  F02D2200/0808 ,  F02D2200/0814 ,  Y02T10/22

Abstract: A three-way catalyst, an NSR catalyst, and an SCR catalyst are provided in this order for an exhaust gas passage, wherein the air-fuel ratio (AFR) is set to a first AFR which is a rich AFR before the AFR is switched from a theoretical AFR to a lean AFR, and then the AFR is set to a second AFR which is higher than the first AFR and lower than the theoretical AFR if a NOx occlusion amount is less than a threshold value during a period until an NH3 adsorption amount of the SCR catalyst becomes a predetermined adsorption amount, while the AFR is set to a third AFR which is higher than the first AFR and lower than the second AFR if the NOx occlusion amount is not less than the threshold value.

公开(公告)号：US20180094596A1

公开(公告)日：2018-04-05

申请号：US15510660

申请日：2015-09-11

Applicant: ISUZU MOTORS LIMITED

Inventor： Masaaki NISHITO ,  Teruo NAKADA ,  Takayuki SAKAMOTO ,  Daiji NAGAOKA ,  Masashi GABE

IPC: F02D41/02 ,  F01N3/20 ,  F02D41/18 ,  F02D41/40

CPC classification number: F02D41/0235 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/20 ,  F01N3/2033 ,  F01N2430/06 ,  F01N2430/08 ,  F01N2900/08 ,  F01N2900/1612 ,  F01N2900/1614 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/029 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/1463 ,  F02D41/1475 ,  F02D41/18 ,  F02D41/2448 ,  F02D41/2454 ,  F02D41/40 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2250/36 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/44

Abstract: An exhaust purification system includes: an NOx reduction type catalyst, which is provided in an exhaust passage; an intake air amount sensor, which detects an intake air amount of the internal combustion engine; and a controller, which executes a regeneration treatment that recovers an NOx purification capacity of the NOx reduction type catalyst by switching an exhaust air fuel ratio from a lean state to a rich state by using: an air-system control to reduce the intake air amount; and an injection-system control to increase a fuel injection amount, wherein, in response to a detection value of the intake air amount sensor, the controller changes at least one of a fuel injection timing and the fuel injection amount in the internal combustion engine, in at least one period of switching of: a period of starting the regeneration treatment; and a period of ending the regeneration treatment.

公开(公告)号：US20170191397A1

公开(公告)日：2017-07-06

申请号：US15510658

申请日：2015-09-11

Applicant: ISUZU MOTORS LIMITED

Inventor： Masaaki NISHITO ,  Teruo NAKADA ,  Takayuki SAKAMOTO ,  Daiji NAGAOKA

IPC: F01N3/20 ,  F02D41/02 ,  F01N11/00

CPC classification number: F01N3/2066 ,  F01N3/00 ,  F01N3/02 ,  F01N3/08 ,  F01N3/20 ,  F01N3/2006 ,  F01N3/24 ,  F01N3/28 ,  F01N11/007 ,  F01N2560/025 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/02 ,  F02D41/0245 ,  F02D41/025 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/04 ,  F02D41/1454 ,  F02D41/1458 ,  F02D41/1475 ,  F02D41/18 ,  F02D41/401 ,  F02D41/402 ,  F02D41/405 ,  Y02T10/47

Abstract: An exhaust purification system includes: an NOx reduction type catalyst, which is provided in an exhaust system of an internal combustion engine and reduces and purifies NOx in an exhaust gas; and a regeneration treatment unit, which recovers an NOx purification capacity of the NOx reduction type catalyst by lowering an excess-air-ratio of the exhaust gas to a predetermined target excess-air-ratio, wherein the regeneration treatment unit includes: a target setting unit, which sets a target intake air amount that is required for setting the exhaust gas to the target excess-air-ratio, based on a fuel injection amount of the internal combustion engine; and an air-system controller, which controls at least one of an intake air amount and an exhaust recirculating amount of the internal combustion engine, in response to the target intake air amount input from the target setting unit.

公开(公告)号：US09567891B2

公开(公告)日：2017-02-14

申请号：US14744819

申请日：2015-06-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Roberto Argolini ,  Giovanni Montinaro ,  Alberto Giordano

IPC: F01N3/00 ,  F01N9/00 ,  F01N11/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/08

CPC classification number: F01N9/002 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N11/00 ,  F01N11/007 ,  F01N2550/04 ,  F01N2560/025 ,  F01N2900/0414 ,  F01N2900/1402 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1445 ,  F02D41/1454 ,  F02D2041/1432 ,  Y02T10/47

Abstract: A method is disclosed for controlling a concentration of oxygen that is measured by an oxygen sensor of an after-treatment system of an internal combustion engine when a regeneration of an after-treatment device is required. The method may be a computer-implement method. An oxygen sensor target value is lowered in a stepped phase as a function of an exhaust gas flow speed as the exhaust gas passes through the after-treatment system. The oxygen sensor target value is lowered evenly as a function of the exhaust gas flow speed and by a filter phase when a measured air/fuel ratio value is less than or equal to an AFR threshold value and until the oxygen sensor target value is equal to an oxygen sensor final target value. The oxygen concentration is controlled by applying the oxygen sensor target value.

Abstract translation: 公开了一种用于控制当需要后处理装置的再生时由内燃机的后处理系统的氧传感器测量的氧浓度的方法。 该方法可以是计算机实现的方法。 随着废气通过后处理系统，氧传感器目标值随着废气流速的变化而在阶梯相中降低。 当测量的空气/燃料比值小于或等于AFR阈值时，氧传感器目标值作为废气流速的函数和滤波器相位均匀地降低，并且直到氧传感器目标值等于 氧传感器的最终目标值。 通过施加氧传感器目标值来控制氧浓度。

公开(公告)号：US20170022863A1

公开(公告)日：2017-01-26

申请号：US15216188

申请日：2016-07-21

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Paspuleti Ashish Kumar NAIDU ,  James WRIGHT ,  Peter George BRITTLE

IPC: F01N3/08 ,  H02K7/18 ,  H02J7/32 ,  F01N3/18

CPC classification number: F01N3/0885 ,  F01N3/2006 ,  F01N2430/06 ,  F01N2590/11 ,  F01N2900/104 ,  F02D41/028 ,  F02D41/1444 ,  F02D2041/026 ,  F02D2200/502 ,  H02J7/32 ,  Y02A50/2322 ,  Y02T10/26

Abstract: A method of removing sulfur from a lean NOx trap of a mild hybrid vehicle while the vehicle is stationary is disclosed, the method comprising connecting an electrical system of the vehicle to a large capacity external battery, operating an integrated starter generator driven by an engine of the vehicle as a generator to load the engine thereby allowing the engine to be operated at a higher torque level and rich of stoichiometric and storing the electrical energy produced by the integrated starter generator in the large capacity battery during the time period required for the removal of sulfur from the lean NOx trap.

Abstract translation: 公开了一种在车辆静止时从轻度混合动力车辆的贫NOx捕集器除去硫的方法，所述方法包括将车辆的电气系统连接到大容量外部电池，操作由发动机驱动的集成起动发电机 车辆作为发电机装载发动机，从而允许发动机以更高的扭矩水平和丰富的化学计量运行，并且在整个起动发电机产生的电能在除去 来自贫NOx捕集器的硫。

公开(公告)号：US09528412B2

公开(公告)日：2016-12-27

申请号：US14409122

申请日：2012-06-19

Applicant: Kenji Sakurai ,  Yuji Miyoshi ,  Toru Kidokoro

Inventor： Kenji Sakurai ,  Yuji Miyoshi ,  Toru Kidokoro

IPC: F01N3/00 ,  F01N3/20 ,  F01N3/08 ,  F01N9/00 ,  F01N13/00 ,  B01D53/94 ,  F01N3/22

CPC classification number: F01N3/20 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2066 ,  F01N3/22 ,  F01N9/00 ,  F01N13/009 ,  F01N2610/02 ,  F02D41/025 ,  F02D41/028 ,  F02D2200/0808 ,  F02D2200/0811 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust gas purification catalyst is recovered from the sulfur poisoning more appropriately. For this purpose, an exhaust gas purification apparatus for an internal combustion engine selectively executes first control in which an air-fuel ratio of an exhaust gas allowed to flow into an exhaust gas purification catalyst is set to be not more than a theoretical air-fuel ratio to remove a sulfur component from the exhaust gas purification catalyst; and second control in which the air-fuel ratio of the exhaust gas allowed to flow into the exhaust gas purification catalyst is set to an air-fuel ratio that is lower than the air-fuel ratio of the exhaust gas set in the first control to remove the sulfur component from the exhaust gas purification catalyst; wherein the exhaust gas purification apparatus for the internal combustion engine comprises a control unit which executes any one of the first control and the second control on the basis of at least one of purification performance of the exhaust gas purification catalyst, a travel distance of a vehicle that carries the internal combustion engine, and a number of times of removal of the sulfur component from the exhaust gas purification catalyst.

Abstract translation: 更适当地从硫中毒中回收废气净化催化剂。 为此，内燃机的废气净化装置选择性地执行第一控制，其中允许流入排气净化催化剂的废气的空燃比被设定为不大于理论空燃比 以从废气净化催化剂中除去硫成分; 并且允许流入排气净化催化剂的废气的空燃比被设定为低于设定在第一控制中的排气的空燃比的空燃比的第二控制， 从废气净化催化剂中除去硫成分; 其特征在于，所述内燃机的废气净化装置具有控制单元，其基于所述排气净化催化剂的净化性能，车辆的行驶距离，行驶距离，所述第一控制和所述第二控制中的至少一个， 其承载内燃机，并且从废气净化催化剂中多次除去硫成分。

公开(公告)号：US09486740B2

公开(公告)日：2016-11-08

申请号：US14116542

申请日：2012-06-21

Applicant: Toru Uenishi ,  Kohei Yoshida ,  Mikio Inoue

Inventor： Toru Uenishi ,  Kohei Yoshida ,  Mikio Inoue

IPC: B01D53/94 ,  F01N3/035 ,  F01N3/08 ,  F02D41/02 ,  F01N13/00

CPC classification number: B01D53/9431 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0885 ,  F01N13/0097 ,  F01N2240/30 ,  F01N2900/08 ,  F01N2900/1402 ,  F02D41/0275 ,  F02D41/028 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15

Abstract: In an engine, an exhaust purification catalyst (13) and a hydrocarbon feed valve (15) are arranged in an engine exhaust passage, and, a low pressure exhaust gas recirculation system (LPL) which makes exhaust gas downstream of the exhaust purification catalyst (13) recirculate is provided. If hydrocarbons are injected from the hydrocarbon feed valve (15), a carbon dioxide which is generated at the exhaust purification catalyst (13) is recirculated, and the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst (13) temporarily drops. Hydrocarbons are injected from the hydrocarbon feed valve (15) in synchronization with this temporary drop in the air-fuel ratio.

Abstract translation: 在发动机中，排气净化催化剂（13）和碳氢化合物供给阀（15）配置在发动机排气通路中，低排气净化催化剂（LPL） 13）再循环。 如果从烃供给阀（15）喷射烃，则在排气净化催化剂（13）中产生的二氧化碳再循环，流入排气净化催化剂（13）的排气的空燃比， 暂时下降。 碳氢化合物从空气 - 燃料比的这种临时液滴同步地从烃进料阀（15）喷射。

公开(公告)号：US09482128B2

公开(公告)日：2016-11-01

申请号：US14116754

申请日：2012-05-09

Applicant: Stephan Eckhoff ,  Stefan Franoschek ,  Frank Adam

Inventor： Stephan Eckhoff ,  Stefan Franoschek ,  Frank Adam

IPC: F01N3/20 ,  F01N3/10 ,  F01N3/08 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/12 ,  F02B37/00

CPC classification number: F01N3/10 ,  F01N3/0821 ,  F01N3/0885 ,  F01N2240/36 ,  F02B37/00 ,  F02D41/0055 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/042 ,  F02D41/12 ,  F02D2041/0022 ,  F02M26/05 ,  F02M26/06 ,  Y02A50/2325 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/47

Abstract: The invention relates to a method for regenerating nitrogen oxide storage catalytic converters and to a correspondingly adapted exhaust-gas purification system for lean-burn engines. In particular, the present invention relates to the regeneration of nitrogen oxide storage catalytic converters during special driving situations of the vehicle.

Abstract translation: 本发明涉及一种用于再生氮氧化物储存催化转化器的方法，以及用于稀薄燃烧发动机的相应适用的废气净化系统。 特别地，本发明涉及在车辆的特殊驾驶状态期间氮氧化物储存催化转化器的再生。

公开(公告)号：US20160069280A1

公开(公告)日：2016-03-10

申请号：US14783358

申请日：2014-04-03

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kyohei YASUDA ,  Tomomi WATANABE ,  Takafumi NISHIO

IPC: F02D19/08 ,  F02D41/06 ,  F02D19/06

CPC classification number: F02D19/084 ,  F02B23/104 ,  F02D11/105 ,  F02D13/0215 ,  F02D15/04 ,  F02D19/061 ,  F02D19/088 ,  F02D41/0002 ,  F02D41/0025 ,  F02D41/028 ,  F02D41/064 ,  F02D41/068 ,  F02D41/402 ,  F02D2200/021 ,  F02D2200/0411 ,  F02D2200/602 ,  Y02T10/18 ,  Y02T10/36 ,  Y02T10/42 ,  Y02T10/44

Abstract: A controller (an engine controller 100) feeds a fuel into a cylinder 11 through a fuel feeder (including a fuel injection valve 53 and a fuel feeding system 54) when the cylinder 11 is in an intake stroke and a compression stroke and if an engine body (an engine 1) is both in a cold running phase and under a heavy load. The engine body at or below a predetermined temperature is in the cold running phase. The load applied to the engine body is heavy when the engine body is under at least a predetermined load. The controller also lowers the upper limit of the charging efficiency of the engine body as the vaporization rate of the fuel fed into the cylinder decreases.

Abstract translation: 当气缸11处于进气行程和压缩行程时，控制器（发动机控制器100）通过燃料供给器（包括燃料喷射阀53和燃料供给系统54）将燃料供给到气缸11中，并且如果发动机 车身（发动机1）处于冷运行阶段且处于重负载状态。 处于或低于预定温度的发动机体处于冷运行阶段。 当发动机主体处于至少预定的负载下时，施加到发动机主体的负载很重。 当进入气缸的燃料的蒸发速率降低时，控制器也降低发动机体的充气效率的上限。