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公开(公告)号：US06330796B1
公开(公告)日：2001-12-18
申请号：US09509606
申请日：2000-03-30
IPC分类号： F01N300
CPC分类号： F02D41/024 , F02B2075/125 , F02D41/3023 , F02D41/402 , F02D2041/389 , Y02T10/123 , Y02T10/26 , Y02T10/44
摘要： To reduce the amounts of HC, NOx and other emissions from a direct injection engine when a catalyst is still in its unheated state, and to promote catalyst quick light-off operation by increasing the temperature of exhaust gases, a control device comprises a temperature state identifier (31) for judging the temperature state of a catalyst (22) and a fuel injection controller (33) for controlling fuel injection from an injector (11). The fuel injection controller (33) controls the injector (11) based on judgment results of the temperature state identifier (31) in such a way that the injector (11) makes at least two-step split injection during a period from an intake stroke to an ignition point including a later injection cycle performed in a middle portion of a compression stroke or later and an earlier injection cycle performed prior to the later injection cycle at least in a low-load range of the engine when the catalyst (22) is in its unheated state, in which its temperature is lower than its activation temperature, and either of the later injection cycle and earlier injection cycle injects fuel which contributes to main combustion during a main combustion period in which approximately 10% to 90% by mass of the injected fuel is burnt in a combustion process occurring in the combustion chamber.
摘要翻译： 为了减少当催化剂仍处于未加热状态时直接喷射发动机的HC，NOx和其它排放物的量，并且通过增加废气的温度来促进催化剂的快速关闭操作，控制装置包括温度状态 用于判断催化剂（22）的温度状态的标识符（31）和用于控制来自喷射器（11）的燃料喷射的燃料喷射控制器（33）。 燃料喷射控制器（33）基于温度状态识别器（31）的判定结果，控制喷射器（11），使得喷射器（11）在进气冲程期间进行至少两步分离喷射 包括在压缩冲程的中间部分执行的稍后的喷射循环或稍后的喷射循环，以及至少在发动机的低负荷范围内，在后一个喷射循环之前执行的较早的喷射循环，当催化剂（22）为 在其未加热状态下，其温度低于其活化温度，并且后续的喷射循环和较早的喷射循环中的任一个喷射在主燃烧期间有助于主燃烧的燃料，其中大约10％至90质量％ 喷射的燃料在燃烧室中发生的燃烧过程中燃烧。
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公开(公告)号：US6085718A
公开(公告)日：2000-07-11
申请号：US199450
申请日：1998-11-25
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
IPC分类号： F02B75/12 , F02D21/08 , F02D35/00 , F02D41/00 , F02D41/06 , F02D41/30 , F02D41/40 , F02B17/00
CPC分类号： F02D41/0057 , F02D35/0092 , F02D41/064 , F02D41/3029 , F02D41/402 , F02B2075/125 , Y02T10/123 , Y02T10/128 , Y02T10/148 , Y02T10/44 , Y02T10/47
摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with a fuel injector for spraying fuel directly into a combustion chamber and an exhaust system having a lean NOx conversion catalyst for lowering an emission level of nitrogen oxides (NOx) in exhaust gas at an air-fuel ratio of .lambda.>1 controls divides a given amount of fuel into two parts which are intermittently delivered through early and late split injection respectively in a intake stroke and controls a fuel injector such that a midpoint between points at which the early and late split injection are timed respectively to start is before a midpoint of a intake stroke while the engine is in a cold condition in an enriched fuel charge zone.
摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其配备有用于将燃料直接喷射到燃烧室中的燃料喷射器和具有用于降低氮氧化物（NOx）的排放水平的贫NOx转化催化剂的排气系统， 在空气燃料比为λ> 1的排气中，将给定量的燃料分成两部分，分别在进气冲程中通过早期和后期分离喷射间歇地输送，并控制燃料喷射器，使得在 早期和晚期分离喷射分别定时启动是在进气冲程的中点之前，而发动机在富油燃料装料区域处于冷的状态。
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公开(公告)号：US06257197B1
公开(公告)日：2001-07-10
申请号：US09199451
申请日：1998-11-25
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
IPC分类号： F02D4102
CPC分类号： F02D41/0057 , F02D33/00 , F02D41/3029 , F02D41/402 , Y02T10/128 , Y02T10/148 , Y02T10/44 , Y02T10/47
摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with a fuel injector for spraying fuel directly into a combustion chamber, an exhaust system having a lean NOx conversion catalyst for lowering an emission level of nitrogen oxides (NOx) in exhaust gas and an exhaust gas recirculation system divides a given amount of fuel into two parts which are intermittently delivered through early and late split injection respectively in a intake stroke and controls a fuel injector such that a midpoint between points at which the early and late split injection are timed respectively to start is before a midpoint of a intake stroke and the exhaust gas recirculation system admits exhaust gas partly into an intake air stream while the engine is in a lean homogeneous charge zone.
摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其配备有用于将燃料直接喷射到燃烧室中的燃料喷射器，具有用于降低氮氧化物（NOx）的排放水平的贫NOx转化催化剂的排气系统， 在废气和排气再循环系统中，将给定量的燃料分成两部分，这两部分在进气冲程中分别通过早期和后期分离喷射间歇地输送，并控制燃料喷射器，使得早期和晚期的点之间的中点 分流喷射分别定时开始于进气冲程的中点之前，并且废气再循环系统在发动机处于稀薄均质充气区时部分地将废气部分地进入进气流。
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公开(公告)号：US06345499B1
公开(公告)日：2002-02-12
申请号：US09509605
申请日：2000-03-30
IPC分类号： F01N300
CPC分类号： F02D41/3023 , F02B2075/125 , F02D37/02 , F02D41/024 , F02D41/3836 , F02D41/402 , F02D2041/389 , F02P5/1506 , Y02T10/123 , Y02T10/26 , Y02T10/44 , Y02T10/46
摘要： A catalyst light-off device for a direct injection engine comprises a temperature state identifier (31) for judging the temperature state of a catalyst (22) for converting exhaust gases, a fuel injection controller (33) for controlling fuel injection from an injector (11), and an ignition timing controller (35). When the catalyst is in its unheated state in which its temperature is lower than its activation temperature, the fuel injection controller (33) causes the injector (11) to make split injection during a period from an intake stroke to an ignition point including a later injection cycle which produces a mixture having local unevenness and an earlier injection cycle which produces a uniform and lean mixture, and the ignition timing controller (35) retards the ignition point.
摘要翻译： 用于直接喷射发动机的催化剂灭火装置包括用于判断用于转换废气的催化剂（22）的温度状态的温度状态标识符（31），用于控制来自喷射器的燃料喷射的燃料喷射控制器（33） 11）和点火正时控制器（35）。 当催化剂处于其温度低于其活化温度的未加热状态时，燃料喷射控制器（33）使得喷射器（11）在从进气冲程到包括稍后的进气冲程的点火期间内进行分液喷射 其产生具有局部不均匀性和较早的注射循环的混合物，其产生均匀和贫的混合物，并且点火正时控制器（35）延迟点火点。
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公开(公告)号：US06318074B1
公开(公告)日：2001-11-20
申请号：US09382662
申请日：1999-08-25
IPC分类号： F01N300
CPC分类号： F02P5/1506 , F02B2075/125 , F02D41/024 , F02D41/068 , F02D41/1401 , F02D41/3023 , F02D41/402 , F02D2041/389 , F02F2001/241 , Y02T10/123 , Y02T10/26 , Y02T10/44 , Y02T10/46
摘要： A control device for a direct injection engine includes an identifier for judging whether a catalyst is in its unheated state in which its temperature is lower than its activation temperature, an engine temperature state detector for sensing the temperature state of the engine, and a fuel injection controller for controlling fuel injection from the injector. The fuel injection controller controls an injector in such a way that it makes at least two-step split injection including an earlier injection cycle performed during an intake stroke and a later injection cycle performed in a middle portion of a compression stroke or later when the catalyst is in its unheated state, and the later injection cycle is retarded when the catalyst is still in its unheated state but the engine temperature has become higher than a specified temperature compared to a case where the temperature of the engine is equal to or lower than the specified temperature.
摘要翻译： 用于直接喷射发动机的控制装置包括用于判断催化剂是否处于其温度低于其活化温度的未加热状态的标识符，用于感测发动机的温度状态的发动机温度状态检测器和燃料喷射 用于控制来自喷射器的燃料喷射的控制器。 燃料喷射控制器以这样的方式控制喷射器，使得其进行至少两步分离喷射，包括在进气冲程期间执行的较早的喷射循环和在压缩冲程的中间部分执行的稍后的喷射循环，或者当催化剂 处于其未加热状态，并且当催化剂仍然处于其未加热状态但是发动机温度已经变得高于特定温度时与发动机的温度等于或低于特定温度的情况相比较晚的喷射循环被延迟 指定温度。
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公开(公告)号：US6141960A
公开(公告)日：2000-11-07
申请号：US129755
申请日：1998-08-05
申请人： Akihide Takami , Hideharu Iwakuni , Makoto Kyogoku , Hiroshi Yamada , Kenji Okamoto , Junichi Taga , Tomomi Watanabe , Hirofumi Nishimura , Tadataka Nakazumi , Youichi Kuji , Masayuki Kuroki
发明人： Akihide Takami , Hideharu Iwakuni , Makoto Kyogoku , Hiroshi Yamada , Kenji Okamoto , Junichi Taga , Tomomi Watanabe , Hirofumi Nishimura , Tadataka Nakazumi , Youichi Kuji , Masayuki Kuroki
IPC分类号： F02B17/00 , B01D53/34 , B01D53/50 , B01D53/74 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/24 , F02B75/12 , F02D41/02 , F02D41/04 , F02D41/30 , F02D41/34 , F02D41/40 , F02M45/02 , F01N3/00
CPC分类号： F01N3/0842 , B01D53/9495 , F02D41/028 , F02D41/3023 , F02M45/02 , B01D2251/204 , B01D2255/1021 , B01D2255/204 , B01D2255/91 , B01D2255/912 , F01N2570/04 , F01N2570/16 , F02B2075/125 , F02D2041/389 , F02D41/402 , Y02T10/123
摘要： An exhaust gas purifying system includes an exhaust gas purifying catalyst having a nitrogen oxide absorbing material which is installed in an exhaust line of an engine and performs split fuel injection to inject fuel directly into each combustion chamber partly during a suction stroke and partly during a compression stroke to provide and supply an increased amount of carbon monoxide to the nitrogen oxide absorbing material so as thereby to desorb sulfur oxides from the nitrogen oxide absorbing material.
摘要翻译： 排气净化系统包括具有氮氧化物吸收材料的排气净化催化剂，其被安装在发动机的排气管线中并且在吸入冲程期间部分地在压缩期间进行分流燃料喷射以将燃料直接喷射到每个燃烧室中 提供并向氮氧化物吸收材料提供增加量的一氧化碳，从而从氮氧化物吸收材料中解吸硫氧化物。
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公开(公告)号：US6116208A
公开(公告)日：2000-09-12
申请号：US199449
申请日：1998-11-25
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
IPC分类号： F01N3/08 , F02D35/00 , F02D41/00 , F02D41/02 , F02D41/30 , F02D41/40 , F02B17/00 , F01N3/20 , F02M25/07
CPC分类号： F02D41/005 , F01N3/0842 , F02D35/0092 , F02D41/0275 , F02D41/3029 , F02D41/402 , F02D2041/389 , F02D2200/0806 , Y02T10/128 , Y02T10/148 , Y02T10/44 , Y02T10/47
摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with an exhaust system having a lean NOx conversion catalyst for lowering a NOx level of exhaust gas while the engine operates in a lean fuel charge zone controls the engine to make stratified charge combustion in a zone of partial engine loadings and homogeneous charge combustion in a zone other than said partial engine loading zone and, while the engine operates in a zone where enriched homogeneous charge combustion is made, divides a given amount of fuel into two parts and sprays them through early and late split injection in a intake stroke and admits exhaust gas partly into an intake air stream introduced into the intake system from the exhaust system while the early and late split injection are made. The split injection are caused such that a midpoint between points at which the early and late split injection are timed to start before a midpoint of a intake stroke.
摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其具有排气系统，该排气系统具有用于在发动机在稀燃燃料装料区域内运转时降低废气NOx排放量的稀NOx转化催化剂，从而控制发动机 在除了所述部分发动机装载区域之外的区域中的部分发动机装载区域和均质燃料燃烧中的分层燃料燃烧，并且当发动机在进行富集的均质燃料燃烧的区域中运行时，将给定量的燃料分成两部分 并且在进气冲程中通过早期和晚期分段喷射喷射它们，并且在进行早期和晚期分离喷射的同时将废气部分地从排气系统引入到引入进气系统的进气流中。 引起分流喷射使得早期和晚期分离喷射的点之间的中点在进气冲程的中点之前被定时开始。
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8.发明授权
公开(公告)号：US06055956A
公开(公告)日：2000-05-02
申请号：US199452
申请日：1998-11-25
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
CPC分类号： F02D21/08 , Y02T10/148
摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with a fuel injector for spraying fuel directly into a combustion chamber and an exhaust system having a lean NOx conversion catalyst for lowering an emission level of nitrogen oxides (NOx) in exhaust gas at an air-fuel ratio of .lambda.>1 controls divides a given amount of fuel into two parts which are intermittently delivered through early and late split injection respectively in a intake stroke and controls a fuel injector such that a midpoint between points at which the early and late split injection are timed respectively to start is before a midpoint of a intake stroke while the engine is in a lean fuel charge zone.
摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其配备有用于将燃料直接喷射到燃烧室中的燃料喷射器和具有用于降低氮氧化物（NOx）的排放水平的贫NOx转化催化剂的排气系统， 在空气燃料比为λ> 1的排气中，将给定量的燃料分成两部分，分别在进气冲程中通过早期和后期分离喷射间歇地输送，并控制燃料喷射器，使得在 早期和晚期分离喷射分别定时启动在进气冲程的中点之前，而发动机处于贫燃料装料区域。
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公开(公告)号：US06513320B1
公开(公告)日：2003-02-04
申请号：US09199448
申请日：1998-11-25
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
IPC分类号： F02D4140
CPC分类号： F02D41/402 , F01N3/0842 , F02D35/0092 , F02D41/0057 , F02D41/0235 , F02D2041/389 , F02D2200/0804 , Y02T10/148 , Y02T10/44
摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with a fuel injector for spraying fuel directly into a combustion chamber and an exhaust system having a lean NOx conversion catalyst for lowering an emission level of nitrogen oxides (NOx) in exhaust gas at an air-fuel ratio of &lgr;>1 controls divides a given amount of fuel into two parts which are intermittently delivered through early and late split injection respectively in a intake stroke and controls a fuel injector such that a midpoint between points at which the early and late split injection are timed respectively to start is before a midpoint of a intake stroke while the engine is in a lean fuel charge zone.
摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其配备有用于将燃料直接喷射到燃烧室中的燃料喷射器和具有用于降低氮氧化物（NOx）的排放水平的贫NOx转化催化剂的排气系统， 在空气燃料比为lambd> 1的排气中，将给定量的燃料分成两部分，这两部分在进气冲程中分别通过早期和后期分离喷射间歇地输送，并控制燃料喷射器，使得在 早期和晚期分离喷射分别定时启动在进气冲程的中点之前，而发动机处于贫燃料装料区域。
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公开(公告)号：US06434929B1
公开(公告)日：2002-08-20
申请号：US09487311
申请日：2000-01-19
申请人： Hirofumi Nishimura , Youichi Kuji
发明人： Hirofumi Nishimura , Youichi Kuji
IPC分类号： F02M2506
CPC分类号： F02M45/02 , F01N3/0842 , F01N2430/06 , F01N2610/03 , F02B2075/125 , F02D21/08 , F02D41/0275 , F02D41/1475 , F02D41/3023 , F02D41/3064 , F02D41/402 , F02D2041/389 , Y02T10/123 , Y02T10/44
摘要： In a direct injection engine including an injector (22) for directly injecting fuel into a combustion chamber (15) and a lean NOx catalyst (36), an ECU (50) changes the air-fuel ratio from that higher than the stoichiometric air-fuel ratio to that substantially equal to or lower than the stoichiometric air-fuel ratio. When the air-fuel ratio has changed from a air-fuel ratio higher than the stoichiometric air-fuel ratio to an air-fuel ratio substantially equal to or lower than the stoichiometric air-fuel ratio, the ECU controls to divisionally execute fuel injection from the injector (22) in at least two injections, i.e., leading injection that starts within the intake stroke period and trailing injection that starts within the compression stroke period.
摘要翻译： 在包括用于将燃料直接喷射到燃烧室（15）和贫NOx催化剂（36）中的喷射器（22）的直喷式发动机中，ECU（50）将空燃比从高于理论空燃比 燃料比大致等于或低于理论空燃比。 当空燃比从高于理论空燃比的空燃比改变为基本上等于或低于理论空燃比的空燃比时，ECU控制以分开执行燃料喷射 喷射器（22）在至少两次喷射中，即在进气冲程期间内开始的前进喷射以及在压缩冲程期间内开始的尾喷射。
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