公开(公告)号：US20080190097A1

公开(公告)日：2008-08-14

申请号：US12069784

申请日：2008-02-13

申请人： Katsuji Wada ,  Norio Suzuki ,  Takashi Konomoto

发明人： Katsuji Wada ,  Norio Suzuki ,  Takashi Konomoto

IPC分类号： F01N3/023

CPC分类号： F01N3/0871 ,  F01N3/0842 ,  F01N3/0885 ,  F01N11/002 ,  F01N13/009 ,  F01N2430/06 ,  F01N2430/085 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/405 ,  F02D2041/1419 ,  F02D2200/0802 ,  F02D2200/0806 ,  F02D2250/32 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of properly regenerating a NOx catalyst, while properly controlling NOx catalyst temperature and ensuring excellent drivability. As a regeneration operation, the exhaust emission control device feedback-controls a detected reducing condition of exhaust gases to a predetermined reducing condition, by controlling the amount of main fuel injected by main injection or feedback-controls the same to the predetermined reducing condition by controlling the amount of auxiliary fuel injected by auxiliary injection. The device determines whether the regeneration operation should be executed in a catalyst temperature control mode for controlling the NOx catalyst temperature. If, as a result of the determination, the regeneration operation should be executed in the catalyst temperature control mode, the device selects the feedback control of the main fuel amount, and otherwise selects the feedback control of the auxiliary fuel amount.

摘要翻译： 一种用于内燃机的废气排放控制装置，其能够适当地再生NOx催化剂，同时适当地控制NOx催化剂温度并确保优异的驾驶性能。 作为再生动作，废气排放控制装置通过控制主喷射喷射的主燃料的量或反馈控制将排气的检测的还原条件反馈到预定的还原条件，通过控制 通过辅助喷射喷射的辅助燃料的量。 该装置确定在用于控制NOx催化剂温度的催化剂温度控制模式下是否执行再生操作。 如果作为确定的结果，在催化剂温度控制模式下执行再生操作，则装置选择主燃料量的反馈控制，否则选择辅助燃料量的反馈控制。

公开(公告)号：US08256206B2

公开(公告)日：2012-09-04

申请号：US12069784

申请日：2008-02-13

申请人： Katsuji Wada ,  Norio Suzuki ,  Takashi Konomoto

发明人： Katsuji Wada ,  Norio Suzuki ,  Takashi Konomoto

IPC分类号： F01N3/00

CPC分类号： F01N3/0871 ,  F01N3/0842 ,  F01N3/0885 ,  F01N11/002 ,  F01N13/009 ,  F01N2430/06 ,  F01N2430/085 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/405 ,  F02D2041/1419 ,  F02D2200/0802 ,  F02D2200/0806 ,  F02D2250/32 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of properly regenerating a NOx catalyst, while properly controlling NOx catalyst temperature and ensuring excellent drivability. As a regeneration operation, the exhaust emission control device feedback-controls a detected reducing condition of exhaust gases to a predetermined reducing condition, by controlling the amount of main fuel injected by main injection or feedback-controls the same to the predetermined reducing condition by controlling the amount of auxiliary fuel injected by auxiliary injection. The device determines whether the regeneration operation should be executed in a catalyst temperature control mode for controlling the NOx catalyst temperature. If, as a result of the determination, the regeneration operation should be executed in the catalyst temperature control mode, the device selects the feedback control of the main fuel amount, and otherwise selects the feedback control of the auxiliary fuel amount.

摘要翻译： 一种用于内燃机的废气排放控制装置，其能够适当地再生NOx催化剂，同时适当地控制NOx催化剂温度并确保优异的驾驶性能。 作为再生动作，废气排放控制装置通过控制主喷射喷射的主燃料的量或反馈控制将排气的检测的还原条件反馈到预定的还原条件，通过控制 通过辅助喷射喷射的辅助燃料的量。 该装置确定在用于控制NOx催化剂温度的催化剂温度控制模式下是否执行再生操作。 如果作为确定的结果，在催化剂温度控制模式下执行再生操作，则装置选择主燃料量的反馈控制，否则选择辅助燃料量的反馈控制。

公开(公告)号：US20080234917A1

公开(公告)日：2008-09-25

申请号：US12052986

申请日：2008-03-21

申请人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

发明人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

IPC分类号： F02D41/00

CPC分类号： F02D41/401 ,  F02D41/1401 ,  F02D41/187 ,  F02D2250/21 ,  Y02T10/44

摘要： A control system for an internal combustion engine, which is capable of properly setting fuel injection timing according to the actual degree of delay of the amount of fresh air to be supplied to cylinders of the engine, thereby making it possible to positively suppress torque variation, when the control system has switched an air-fuel ratio mode between a lean mode and a rich mode. The control system controls the air-fuel ratio of a mixture by switching the air-fuel ratio mode. In the lean mode, the control system sets a target fresh air amount for the lean mode, and in the rich mode, it sets a target fresh air amount for the rich mode. Upon switching the air-fuel ratio mode, the control system corrects the fuel injection timing according to the difference between the target fresh air amount for the lean mode or the rich mode and the detected fresh air amount.

摘要翻译： 一种用于内燃机的控制系统，其能够根据供给到发动机的气缸的新鲜空气量的实际延迟时间来适当地设定燃料喷射正时，从而可以显着地抑制转矩变化， 当控制系统在瘦模式和富模式之间切换空燃比模式时。 控制系统通过切换空燃比模式来控制混合气的空燃比。 在瘦模式下，控制系统为稀薄模式设定目标新鲜空气量，在富模式中，为富模设定目标新鲜空气量。 在切换空燃比模式时，控制系统根据稀薄模式或富模式的目标新鲜空气量与检测到的新鲜空气量之间的差异来校正燃料喷射正时。

公开(公告)号：US07886526B2

公开(公告)日：2011-02-15

申请号：US12038312

申请日：2008-02-27

申请人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

发明人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

IPC分类号： F01N3/00

CPC分类号： F02D41/0275 ,  F01N3/0871 ,  F01N2430/085 ,  F02D41/0007 ,  F02D41/182 ,  F02D41/405 ,  F02D2200/0406 ,  F02M63/0225 ,  Y02T10/20 ,  Y02T10/44

摘要： The present invention provides a fuel control for an internal-combustion engine having an exhaust gas purifying device that is disposed in an exhaust system of the engine. A reducing agent is supplied to the exhaust gas purifying device by injecting fuel in an expansion stroke or an exhaust stroke of the engine. An intake air amount supplied to the engine is controllable. The fuel control includes decreasing the intake air amount supplied to the engine during the fuel injection for the supply of the reducing agent. The fuel control also includes advancing an injection timing of the fuel injection for the supply of the reducing agent when an actual intake air amount is less than a desired intake air amount or when an actual boost pressure is higher than a desired boost pressure. The advancement of the injection timing improves the combustibility of engine while decreasing the HC exhaust amount.

摘要翻译： 本发明提供一种具有排气净化装置的内燃机的燃料控制装置，该排气净化装置设置在发动机的排气系统中。 通过在发动机的膨胀冲程或排气冲程中喷射燃料，将还原剂供给到排气净化装置。 供给发动机的进气量是可控的。 燃料控制包括减少在用于供给还原剂的燃料喷射期间供给到发动机的进气量。 燃料控制还包括当实际进气量小于期望进气量时或当实际增压压力高于期望的增压压力时，推进用于供给还原剂的燃料喷射的喷射定时。 喷射正时的进行提高了发动机的可燃性，同时降低了HC排气量。

公开(公告)号：US07792630B2

公开(公告)日：2010-09-07

申请号：US12052986

申请日：2008-03-21

申请人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

发明人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

IPC分类号： B60T7/12

CPC分类号： F02D41/401 ,  F02D41/1401 ,  F02D41/187 ,  F02D2250/21 ,  Y02T10/44

摘要： A control system for an internal combustion engine, which is capable of properly setting fuel injection timing according to the actual degree of delay of the amount of fresh air to be supplied to cylinders of the engine, thereby making it possible to positively suppress torque variation, when the control system has switched an air-fuel ratio mode between a lean mode and a rich mode. The control system controls the air-fuel ratio of a mixture by switching the air-fuel ratio mode. In the lean mode, the control system sets a target fresh air amount for the lean mode, and in the rich mode, it sets a target fresh air amount for the rich mode. Upon switching the air-fuel ratio mode, the control system corrects the fuel injection timing according to the difference between the target fresh air amount for the lean mode or the rich mode and the detected fresh air amount.

摘要翻译： 一种用于内燃机的控制系统，其能够根据供给到发动机的气缸的新鲜空气量的实际延迟时间来适当地设定燃料喷射正时，从而可以显着地抑制转矩变化， 当控制系统在瘦模式和富模式之间切换空燃比模式时。 控制系统通过切换空燃比模式来控制混合气的空燃比。 在瘦模式下，控制系统为稀薄模式设定目标新鲜空气量，在富模式中，为富模设定目标新鲜空气量。 在切换空燃比模式时，控制系统根据稀薄模式或富模式的目标新鲜空气量与检测到的新鲜空气量之间的差异来校正燃料喷射正时。

公开(公告)号：US20080202099A1

公开(公告)日：2008-08-28

申请号：US12038312

申请日：2008-02-27

申请人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

发明人： Junichi Hatano ,  Katsuji Wada ,  Takashi Konomoto

IPC分类号： F01N9/00 ,  F02D45/00

CPC分类号： F02D41/0275 ,  F01N3/0871 ,  F01N2430/085 ,  F02D41/0007 ,  F02D41/182 ,  F02D41/405 ,  F02D2200/0406 ,  F02M63/0225 ,  Y02T10/20 ,  Y02T10/44

摘要： The present invention provides a fuel control for an internal-combustion engine having an exhaust gas purifying device that is disposed in an exhaust system of the engine. A reducing agent is supplied to the exhaust gas purifying device by injecting fuel in an expansion stroke or an exhaust stroke of the engine. An intake air amount supplied to the engine is controllable. The fuel control includes decreasing the intake air amount supplied to the engine during the fuel injection for the supply of the reducing agent. The fuel control also includes advancing an injection timing of the fuel injection for the supply of the reducing agent when an actual intake air amount is less than a desired intake air amount or when an actual boost pressure is higher than a desired boost pressure. The advancement of the injection timing improves the combustibility of engine while decreasing the HC exhaust amount.

摘要翻译： 本发明提供一种具有排气净化装置的内燃机的燃料控制装置，该排气净化装置设置在发动机的排气系统中。 通过在发动机的膨胀冲程或排气冲程中喷射燃料，将还原剂供给到排气净化装置。 供给发动机的进气量是可控的。 燃料控制包括减少在用于供给还原剂的燃料喷射期间供给到发动机的进气量。 燃料控制还包括当实际进气量小于期望进气量时或当实际增压压力高于期望的增压压力时，推进用于供给还原剂的燃料喷射的喷射定时。 喷射正时的进行提高了发动机的可燃性，同时降低了HC排气量。

公开(公告)号：US08141349B2

公开(公告)日：2012-03-27

申请号：US11979169

申请日：2007-10-31

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/00

CPC分类号： F01N3/0871 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N11/002 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/14 ,  F02B29/0437 ,  F02B31/06 ,  F02B37/22 ,  F02D41/0275 ,  F02M26/05 ,  F02M2026/009 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of supplying a just enough amount of reducing agent to the NOx catalyst even when a catalyst is provided on an upstream side of the NOx catalyst. A catalyst and a NOx catalyst are disposed at respective upstream and downstream locations in an exhaust system, for purifying NOx and for trapping NOx under an oxidizing atmosphere and reducing the NOx under a reducing atmosphere, respectively. An air-fuel sensor is disposed between the catalyst and the NOx catalyst. A reducing agent is supplied to an upstream side of the catalyst, to control exhaust gases such that the gases form the reducing atmosphere. To determine time of termination of NOx reduction control, an amount of reducing agent supplied to the NOx catalyst is calculated, and calculation of the amount of reducing agent is started when the air-fuel ratio has converged within a vicinity of a target air-fuel ratio.

摘要翻译： 即使在NOx催化剂的上游侧设置有催化剂，也能够向NOx催化剂供给足够量的还原剂的内燃机废气排放控制装置。 催化剂和NOx催化剂设置在排气系统中的各个上游和下游位置，用于净化NOx并在氧化气氛下捕获NOx，并在还原气氛下还原NOx。 在催化剂和NOx催化剂之间设置有空气 - 燃料传感器。 将还原剂供给到催化剂的上游侧，以控制废气，使得气体形成还原气氛。 为了确定NOx还原控制的终止时间，计算供给到NOx催化剂的还原剂的量，并且当空燃比收敛在目标空气燃料附近时开始还原剂的量的计算 比。

公开(公告)号：US07993582B2

公开(公告)日：2011-08-09

申请号：US11882406

申请日：2007-08-01

申请人： Hisao Haga ,  Norio Suzuki ,  Katsuji Wada

发明人： Hisao Haga ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： G01N21/00 ,  F01N1/00 ,  G01M15/00 ,  G01N7/00

CPC分类号： F02D41/0285 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0885 ,  F01N2560/025 ,  F01N2560/06 ,  F02B37/00 ,  F02D41/0047 ,  F02D41/405 ,  F02D2200/0802 ,  Y02T10/44

摘要： Provided is a control device for an internal combustion engine that can execute a sulfur purge in a favorable manner under all conditions without complicating the control action or the engine structure. The process comprises detecting a temperature of the NOx catalytic converter, detecting an exhaust air fuel ratio in the catalytic converter, computing a target exhaust air fuel ratio according to a detected temperature of the NOx catalytic converter, and controlling a fuel injection valve so as to make an actual exhaust fuel ratio agree with the target exhaust air fuel ratio. If the temperature of the NOx catalytic converter is not high enough to enable a sulfur purge, a temperature increase control is executed to increase the temperature of the NOx catalytic converter by suitably changing various engine parameters.

摘要翻译： 提供一种用于内燃机的控制装置，其可以在所有条件下以良好的方式执行硫吹扫，而不会使控制动作或发动机结构复杂化。 该方法包括检测NOx催化转化器的温度，检测催化转化器中的排气空燃比，根据NOx催化转化器的检测温度计算目标排气空燃比，并控制燃料喷射阀，以便 使实际的排气燃料比与目标排气空燃比一致。 如果NOx催化转化器的温度不足以实现硫吹扫，则通过适当地改变各种发动机参数来执行升温控制以增加NOx催化转化器的温度。

公开(公告)号：US20080148712A1

公开(公告)日：2008-06-26

申请号：US12002209

申请日：2007-12-14

申请人： Katsuji Wada ,  Norio Suzuki ,  Tomoko Morita

发明人： Katsuji Wada ,  Norio Suzuki ,  Tomoko Morita

IPC分类号： F01N3/10 ,  F01N9/00

CPC分类号： F01N9/00 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0097 ,  F01N2250/02 ,  F01N2430/06 ,  F01N2430/085 ,  F02B31/06 ,  F02B37/00 ,  F02B2275/14 ,  F02D41/0275 ,  F02D41/2454 ,  F02D41/402 ,  F02M26/05 ,  F02M26/25 ,  Y02T10/123 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

摘要： An exhaust control device for an internal combustion engine, comprises: a NOx purifying catalyst disposed in an exhaust system; and a rich control means for calculating a fuel injection amount based on a difference between a target exhaust air fuel ratio and an actual exhaust air fuel ratio to feedback-control the actual exhaust air fuel ratio so that a reducing atmosphere is created in the exhaust system to thereby reduce NOx trapped by the NOx purifying catalyst, wherein the rich control means includes a learning means for calculating and updating a control correction value of the fuel injection amount based on an actual control value of the fuel injection amount during the feedback control, and wherein the fuel injection amount is calculated during the feedback control by using the control correction value.

摘要翻译： 一种用于内燃机的排气控制装置，包括：排气系统中的NOx净化催化剂; 以及丰富的控制装置，用于基于目标排气空燃比和实际排气量之间的差来计算燃料喷射量，以反馈控制实际排气空燃比，从而在排气系统中产生还原气氛 从而减少由NOx净化催化剂捕获的NOx，其中富控制装置包括用于基于反馈控制期间的燃料喷射量的实际控制值来计算和更新燃料喷射量的控制校正值的学习装置，以及 其中通过使用控制校正值在反馈控制期间计算燃料喷射量。

公开(公告)号：US20080120969A1

公开(公告)日：2008-05-29

申请号：US11979161

申请日：2007-10-31

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N11/002 ,  F01N11/007 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/06 ,  F02B37/00 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/1465 ,  F02D2200/0811 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of accurately estimating the amount of NOx trapped by a NOx catalyst even when a catalyst is provided on an upstream side of the NOx catalyst. A catalyst having the function of purifying NOx and a NOx catalyst for trapping NOx under an oxidizing atmosphere are disposed in an exhaust system. The amount of NOx contained in exhaust gases is estimated. A NOx purification performance of the catalyst is calculated. The NOx emission amount is corrected based on the purification performance. An amount of NOx trapped in the NOx catalyst is calculated based on the corrected NOx emission amount. A reducing agent is supplied to an upstream side of the catalyst based on the trapped NOx amount, thereby causing the NOx catalyst to carry out a NOx reducing operation.

摘要翻译： 一种用于内燃机的废气排放控制装置，即使在NOx催化剂的上游侧设置催化剂，也能够精确地估计NOx催化剂捕获的NOx的量。 具有净化NOx功能的催化剂和用于在氧化气氛下捕获NOx的NOx催化剂设置在排气系统中。 估计废气中所含的NOx的量。 计算催化剂的NOx净化性能。 基于净化性能来校正NOx排放量。 基于校正的NOx排放量计算捕获在NOx催化剂中的NOx的量。 基于被捕获的NOx量将还原剂供给到催化剂的上游侧，从而使NOx催化剂进行NOx还原操作。