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：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：US20090151697A1

公开(公告)日：2009-06-18

申请号：US12137939

申请日：2008-06-12

申请人： Junichi Hatano ,  Satoshi Yamaguchi ,  Katsuji Wada ,  Kensuke Takahashi

发明人： Junichi Hatano ,  Satoshi Yamaguchi ,  Katsuji Wada ,  Kensuke Takahashi

IPC分类号： F02D41/30

CPC分类号： F02D41/403 ,  F02D35/023 ,  F02D35/026 ,  F02D41/064 ,  F02D41/402 ,  F02D2041/281 ,  F02D2250/18 ,  Y02T10/44

摘要： A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel into a combustion chamber of the engine. A compression end temperature in the combustion chamber is estimated. A target compression end temperature is calculated according to an operating condition of the engine. A main injection and a plurality of pilot injections before the main injection are performed by at least one fuel injection valve. A fuel injection amount in a first-performed pilot injection of the plurality of pilot injections is controlled so that the estimated compression end temperature coincides with the target compression end temperature.

摘要翻译： 一种用于内燃机的控制系统，其具有至少一个用于将燃料喷射到发动机的燃烧室中的燃料喷射阀。 估计燃烧室中的压缩端温度。 根据发动机的运转状况来计算目标压缩结束温度。 在主喷射之前的主喷射和多次先导喷射由至少一个燃料喷射阀执行。 控制多次先导喷射的第一次先导喷射中的燃料喷射量，使得估计的压缩终止温度与目标压缩结束温度一致。

公开(公告)号：US07703440B2

公开(公告)日：2010-04-27

申请号：US12137939

申请日：2008-06-12

申请人： Junichi Hatano ,  Satoshi Yamaguchi ,  Katsuji Wada ,  Kensuke Takahashi

发明人： Junichi Hatano ,  Satoshi Yamaguchi ,  Katsuji Wada ,  Kensuke Takahashi

IPC分类号： F02D41/30

CPC分类号： F02D41/403 ,  F02D35/023 ,  F02D35/026 ,  F02D41/064 ,  F02D41/402 ,  F02D2041/281 ,  F02D2250/18 ,  Y02T10/44

摘要： A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel into a combustion chamber of the engine. A compression end temperature in the combustion chamber is estimated. A target compression end temperature is calculated according to an operating condition of the engine. A main injection and a plurality of pilot injections before the main injection are performed by at least one fuel injection valve. A fuel injection amount in a first-performed pilot injection of the plurality of pilot injections is controlled so that the estimated compression end temperature coincides with the target compression end temperature.

摘要翻译： 一种用于内燃机的控制系统，其具有至少一个用于将燃料喷射到发动机的燃烧室中的燃料喷射阀。 估计燃烧室中的压缩端温度。 根据发动机的运转状况来计算目标压缩结束温度。 在主喷射之前的主喷射和多次先导喷射由至少一个燃料喷射阀执行。 控制多次先导喷射的第一次先导喷射中的燃料喷射量，使得估计的压缩终止温度与目标压缩结束温度一致。

公开(公告)号：US08813490B2

公开(公告)日：2014-08-26

申请号：US13148035

申请日：2010-02-05

申请人： Katsuji Wada

发明人： Katsuji Wada

IPC分类号： F02B33/44 ,  F02M25/07 ,  F02D41/00 ,  F02D41/02 ,  F02D9/02

CPC分类号： F02D41/0065 ,  F02D9/02 ,  F02D41/0055 ,  F02D41/0275 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine is provided that can suppress the adherence of HC to an EGR path and the like accompanying enrichment of the exhaust air/fuel ratio. The exhaust emission control device includes: a high-pressure EGR path 6 that recirculates a portion of the exhaust gas upstream of a turbine 81 into an intake manifold 3; a high-pressure EGR control portion 43; a low-pressure EGR path 10 that recirculates a portion of the exhaust gas downstream of the turbine 81 into intake plumbing 2; a low-pressure EGR control portion 44; a NOx purification catalyst 31 that is provided inside exhaust plumbing 4 downstream of an exhaust inlet of the low-pressure EGR path 10, traps NOx under an oxidizing atmosphere, and purifies the trapped NOx under a reducing atmosphere; a NOx purification catalyst reduction control unit 41 that performs reduction control of the exhaust air/fuel ratio; and an EGR switching portion 45 that selects recirculation control of exhaust gas by the low-pressure EGR control portion 44 in a case of the exhaust air/fuel ratio being at least a predetermined threshold value, and selects recirculation control of exhaust gas by the high-pressure EGR control portion 43 in a case of being lower than the threshold value.

摘要翻译： 本发明提供一种内燃机的废气排放控制装置，能够抑制HC与排气/燃料比的浓缩等对EGR路径等的附着。 废气排放控制装置包括：将涡轮机81上游的排气的一部分再循环到进气歧管3的高压EGR通路6; 高压EGR控制部43; 将涡轮机81下游的废气的一部分再循环到进气管道2中的低压EGR通道10; 低压EGR控制部44; 设置在低压EGR通路10的排气入口下游的排气管道4内的NOx净化催化剂31，在氧化气氛下捕集NOx，并在还原气氛下净化被捕获的NOx; 执行排气/燃料比的减少控制的NOx净化催化剂减少控制单元41; 以及在排气/燃料比至少为预定阈值的情况下选择低压EGR控制部44的排气的再循环控制的EGR切换部45，并且选择排气的再循环控制高 在低于阈值的情况下，压缩EGR控制部43。

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。