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公开(公告)号：US08201396B2
公开(公告)日：2012-06-19
申请号：US12389531
申请日：2009-02-20
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N9/00 , F01N2570/14 , F01N2610/03 , Y02A50/2344 , Y02T10/47
摘要： An exhaust gas cleaning apparatus includes a combustion mode shifter that shifts combustion in a cylinder of an engine from a lean-burn mode to a rich-burn mode for enabling a LNT to reduce NOx contained in the exhaust gas. The combustion mode shifter is configured to: estimate a torque-producing fuel quantity for a fuel injection made by a fuel injector when the combustion is in the lean-burn mode; estimate an excess oxygen ratio for an upcoming fuel injection during the shifting of the combustion from the lean-burn mode to the rich-burn mode; estimate a fuel burning percentage for the upcoming fuel injection based on the excess oxygen ratio; set a command injection quantity for the upcoming fuel injection based on the torque-producing fuel quantity and the fuel burning percentage; and control the fuel injector to inject the command injection quantity of fuel into the cylinder in the upcoming fuel injection.
摘要翻译： 废气净化装置包括燃烧模式转换器，其将发动机气缸中的燃烧从稀燃模式转换为富燃模式，以使LNT能够减少废气中所含的NOx。 燃烧模式移动器被配置为：当燃烧处于稀燃模式时，估计由燃料喷射器进行的燃料喷射的产生转矩的燃料量; 在燃烧从稀燃模式转变为富燃模式期间估计即将到来的燃料喷射的过氧比; 基于过氧比估计即将到来的燃料喷射的燃料燃烧百分比; 基于转矩产生燃料量和燃料燃烧百分比设定即将进行的燃料喷射的指令喷射量; 并且在即将到来的燃料喷射中控制燃料喷射器以将燃料的指令喷射量喷射到气缸中。
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公开(公告)号：US08091338B2
公开(公告)日：2012-01-10
申请号：US12141320
申请日：2008-06-18
申请人： Masakuni Yokoyama , Jun Kawamura
发明人： Masakuni Yokoyama , Jun Kawamura
IPC分类号： F02M25/06
CPC分类号： F01N3/0814 , F01N3/021 , F01N9/00 , F02B3/06 , F02B29/0406 , F02B37/00 , F02D41/005 , F02D41/0235 , F02D41/027 , F02M26/05 , F02M26/06 , F02M26/15 , Y02T10/47
摘要： An exhaust gas cleaning apparatus includes a LNT, a fuel adding device, an exhaust gas returning passage, and a controller. The LNT is provided in an exhaust gas passage of an engine. The fuel adding device is located upstream of the LNT to add fuel to exhaust gas flowing through the exhaust pipe. The exhaust gas returning passage branches off from the exhaust gas passage at a position downstream of the fuel adding device. The controller controls the apparatus to selectively operate in one of first and second modes according to the operating condition of the engine. In the first mode, the fuel adding device adds the fuel to the exhaust gas with the exhaust gas returning passage closed; in the second mode, the exhaust gas is partially returned to an intake air passage through the exhaust gas returning passage without the fuel being added by the fuel adding device.
摘要翻译： 废气净化装置包括LNT，燃料添加装置，废气返回通路和控制器。 LNT设置在发动机的废气通道中。 燃料添加装置位于LNT的上游，以向排出管中排出的排气添加燃料。 废气返回通道在燃料添加装置的下游位置从废气通道分支。 控制器根据发动机的运行状况控制装置选择性地以第一和第二模式之一工作。 在第一模式中，燃料添加装置在废气返回通道关闭的情况下将燃料添加到排气中; 在第二模式中，废气部分地通过排气返回通道返回到进气通道，而燃料不被燃料添加装置所添加。
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公开(公告)号：US20070137183A1
公开(公告)日：2007-06-21
申请号：US11638408
申请日：2006-12-14
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
CPC分类号： F01N3/18
摘要： An NOx catalytic converter, which includes an NOx storage and reduction catalyst, absorbs NOx contained in exhaust gas of an engine. The absorbed NOx is deoxidized and eliminated when an NOx deoxidizing agent is supplied to the catalytic converter. An ECU determines a purifying performance of the catalytic converter based on one of an amount of supplied NOx deoxidizing agent, which is required to deoxidize and remove absorbed NOx at the NOx catalytic converter, and a parameter that correlates with the amount of the supplied NOx deoxidizing agent. The ECU prohibits the determining of the purifying performance of the catalytic converter when it is determined that supplied unburnt fuel, which is supplied to the catalytic converter, is in an excessive state.
摘要翻译： 包括NOx储存和还原催化剂的NOx催化转化器吸收发动机废气中所含的NOx。 当向催化转化器供给NOx脱氧剂时，吸收的NOx被脱氧并除去。 ECU根据在NOx催化转化器中脱氧除去吸附的NOx所需的供给NOx还原剂量和与所提供的NO x脱氧量相关的参数之一来确定催化转化器的净化性能 代理商 当确定提供给催化转化器的供应未燃燃料处于过度状态时，ECU禁止确定催化转化器的净化性能。
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公开(公告)号：US07769531B2
公开(公告)日：2010-08-03
申请号：US12430169
申请日：2009-04-27
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
IPC分类号： F02D41/26
CPC分类号： F02D37/02 , F01N3/0814 , F02B29/0406 , F02B37/00 , F02D41/00 , F02D41/0072 , F02D41/1446 , F02D41/1448 , F02D41/1458 , F02D41/403 , F02D2200/0411 , F02M26/05 , F02M26/10 , F02M26/23 , Y02T10/44
摘要： A control device of an internal combustion engine calculates ignition delays in lean combustion and rich combustion, standardizes the ignition delays based on ignition timing, and further standardizes the ignition delays based on injection quantity and injection timing of pilot injection respectively. The control device calculates a present ignition delay by linear interpolation of the standardized ignition delays in the lean combustion and the rich combustion. Moreover, the control device corrects the present ignition delay with the ignition timing and further corrects the present ignition delay with the injection quantity and the injection timing of the pilot injection. The control device calculates a command value of the injection timing by subtracting the corrected present ignition delay from target ignition timing.
摘要翻译： 内燃机的控制装置计算稀燃和丰富燃烧中的点火延迟，基于点火正时标准化点火延迟，并且进一步基于引燃喷射的喷射量和喷射正时标准化点火延迟。 控制装置通过在稀燃和富燃燃烧中的标准化点火延迟的线性插值来计算当前点火延迟。 此外，控制装置利用点火正时来校正当前的点火延迟，并且进一步校正当前点火延迟与喷射量和引燃喷射的喷射正时。 控制装置通过从目标点火正时减去校正的当前点火延迟来计算喷射定时的指令值。
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公开(公告)号：US20080314036A1
公开(公告)日：2008-12-25
申请号：US12141320
申请日：2008-06-18
申请人： Masakuni Yokoyama , Jun Kawamura
发明人： Masakuni Yokoyama , Jun Kawamura
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N3/021 , F01N9/00 , F02B3/06 , F02B29/0406 , F02B37/00 , F02D41/005 , F02D41/0235 , F02D41/027 , F02M26/05 , F02M26/06 , F02M26/15 , Y02T10/47
摘要： An exhaust gas cleaning apparatus includes a LNT, a fuel adding device, an exhaust gas returning passage, and a controller. The LNT is provided in an exhaust gas passage of an engine. The fuel adding device is located upstream of the LNT to add fuel to exhaust gas flowing through the exhaust pipe. The exhaust gas returning passage branches off from the exhaust gas passage at a position downstream of the fuel adding device. The controller controls the apparatus to selectively operate in one of first and second modes according to the operating condition of the engine. In the first mode, the fuel adding device adds the fuel to the exhaust gas with the exhaust gas returning passage closed; in the second mode, the exhaust gas is partially returned to an intake air passage through the exhaust gas returning passage without the fuel being added by the fuel adding device.
摘要翻译： 废气净化装置包括LNT，燃料添加装置，废气返回通路和控制器。 LNT设置在发动机的废气通道中。 燃料添加装置位于LNT的上游，以向排出管中排出的排气添加燃料。 废气返回通道在燃料添加装置的下游位置从废气通道分支。 控制器根据发动机的运行状况控制装置选择性地以第一和第二模式之一工作。 在第一模式中，燃料添加装置在废气返回通道关闭的情况下将燃料添加到排气中; 在第二模式中，废气部分地通过排气返回通道返回到进气通道，而燃料不被燃料添加装置所添加。
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公开(公告)号：US20080307772A1
公开(公告)日：2008-12-18
申请号：US12119794
申请日：2008-05-13
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
IPC分类号： F01N9/00
CPC分类号： F01N3/021 , F01N3/0821 , F01N2570/10 , F01N2570/14 , F02D35/023 , F02D35/028 , F02D41/0275 , F02D41/1466 , F02D41/2422 , F02D41/405 , F02D2200/0612 , F02D2200/0812 , F02D2200/703 , Y02A50/2344 , Y02T10/20
摘要： When it is determined that fuel in use is low-cetane fuel or a present location point is at a high altitude, a map of rich combustion, exhaust gas fuel addition or a post-injection is rewritten on the occasion of reduction of NOx to inhibit a misfire. Also, deterioration of fuel consumption due to regeneration of a diesel particulate filter is inhibited by suppressing excessive discharge of smoke due to the rich combustion. Thus, an exhaust purification device of an internal combustion engine capable of achieving both of inhibition of the deterioration in the fuel consumption due to the regeneration of the diesel particulate filter and inhibition of torque shock accompanying the misfire during the rich combustion for the NOx reduction is provided.
摘要翻译： 当确定使用中的燃料是低十六烷值燃料或当前位置点处于高空时，在减少NOx以抑制浓缩燃烧，废气燃料添加或后喷射的图中被重写 失火 此外，通过抑制由于丰富的燃烧引起的烟雾的过度排放，可以抑制由于柴油机微粒过滤器的再生引起的燃料消耗的劣化。 因此，能够实现由于柴油微粒过滤器的再生而导致的燃料消耗的劣化抑制和伴随着用于NOx还原的浓燃烧期间的失火的扭矩冲击的抑制的内燃机的排气净化装置， 提供。
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公开(公告)号：US07836686B2
公开(公告)日：2010-11-23
申请号：US11643978
申请日：2006-12-22
申请人： Masakuni Yokoyama , Jun Kawamura
发明人： Masakuni Yokoyama , Jun Kawamura
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N11/007 , F01N13/009 , F01N2560/08 , F01N2560/14 , F02D41/0275 , F02D41/1454 , F02D2200/0811 , Y02T10/24 , Y02T10/47
摘要： An ECU controls a rich purge in the internal combustion engine by temporarily changing an air/fuel ratio of the exhaust gas into a rich range to deoxidize and remove absorbed NOx, which is absorbed by an NOx storage and reduction catalyst of an NOx catalytic converter. The ECU changes a degree of richness of the air/fuel ratio at a time of performing the rich purge based on a state of the NOx catalytic converter.
摘要翻译： ECU通过将废气的空气/燃料比临时改变为浓度范围来控制内燃机中的浓气，从而对由NOx催化转化器的NOx储存还原催化剂吸收的吸收的NOx进行脱氧和去除。 基于NOx催化转化器的状态，ECU进行浓吹扫时的空气/燃料比的丰富度变化。
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公开(公告)号：US07797925B2
公开(公告)日：2010-09-21
申请号：US11638408
申请日：2006-12-14
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
IPC分类号： F01N3/00
CPC分类号： F01N3/18
摘要： An NOx catalytic converter, which includes an NOx storage and reduction catalyst, absorbs NOx contained in exhaust gas of an engine. The absorbed NOx is deoxidized and eliminated when an NOx deoxidizing agent is supplied to the catalytic converter. An ECU determines a purifying performance of the catalytic converter based on one of an amount of supplied NOx deoxidizing agent, which is required to deoxidize and remove absorbed NOx at the NOx catalytic converter, and a parameter that correlates with the amount of the supplied NOx deoxidizing agent. The ECU prohibits the determining of the purifying performance of the catalytic converter when it is determined that supplied unburnt fuel, which is supplied to the catalytic converter, is in an excessive state.
摘要翻译： 包括NOx储存和还原催化剂的NOx催化转化器吸收发动机废气中所含的NOx。 当向催化转化器供给NOx脱氧剂时，吸收的NOx被脱氧并除去。 ECU根据在NOx催化转化器中脱氧除去吸附的NOx所需的供给NOx还原剂量和与所提供的NO x脱氧量相关的参数之一来确定催化转化器的净化性能 代理商 当确定提供给催化转化器的供应未燃燃料处于过度状态时，ECU禁止确定催化转化器的净化性能。
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公开(公告)号：US07797097B2
公开(公告)日：2010-09-14
申请号：US12119794
申请日：2008-05-13
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
CPC分类号： F01N3/021 , F01N3/0821 , F01N2570/10 , F01N2570/14 , F02D35/023 , F02D35/028 , F02D41/0275 , F02D41/1466 , F02D41/2422 , F02D41/405 , F02D2200/0612 , F02D2200/0812 , F02D2200/703 , Y02A50/2344 , Y02T10/20
摘要： When it is determined that fuel in use is low-cetane fuel or a present location point is at a high altitude, a map of rich combustion, exhaust gas fuel addition or a post-injection is rewritten on the occasion of reduction of NOx to inhibit a misfire. Also, deterioration of fuel consumption due to regeneration of a diesel particulate filter is inhibited by suppressing excessive discharge of smoke due to the rich combustion. Thus, an exhaust purification device of an internal combustion engine capable of achieving both of inhibition of the deterioration in the fuel consumption due to the regeneration of the diesel particulate filter and inhibition of torque shock accompanying the misfire during the rich combustion for the NOx reduction is provided.
摘要翻译： 当确定使用中的燃料是低十六烷值燃料或当前位置点处于高空时，在减少NOx以抑制浓缩燃烧，废气燃料添加或后喷射的图中被重写 失火 此外，通过抑制由于丰富的燃烧引起的烟雾的过度排放，可以抑制由于柴油机微粒过滤器的再生引起的燃料消耗的劣化。 因此，能够实现由于柴油微粒过滤器的再生而导致的燃料消耗的劣化抑制和伴随着用于NOx还原的浓燃烧期间的失火的扭矩冲击的抑制的内燃机的排气净化装置， 提供。
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公开(公告)号：US20090205317A1
公开(公告)日：2009-08-20
申请号：US12389531
申请日：2009-02-20
申请人： Jun Kawamura , Masakuni Yokoyama
发明人： Jun Kawamura , Masakuni Yokoyama
CPC分类号： F01N3/0814 , F01N9/00 , F01N2570/14 , F01N2610/03 , Y02A50/2344 , Y02T10/47
摘要： An exhaust gas cleaning apparatus includes a combustion mode shifter that shifts combustion in a cylinder of an engine from a lean-burn mode to a rich-burn mode for enabling a LNT to reduce NOx contained in the exhaust gas. The combustion mode shifter is configured to: estimate a torque-producing fuel quantity for a fuel injection made by a fuel injector when the combustion is in the lean-burn mode; estimate an excess oxygen ratio for an upcoming fuel injection during the shifting of the combustion from the lean-burn mode to the rich-burn mode; estimate a fuel burning percentage for the upcoming fuel injection based on the excess oxygen ratio; set a command injection quantity for the upcoming fuel injection based on the torque-producing fuel quantity and the fuel burning percentage; and control the fuel injector to inject the command injection quantity of fuel into the cylinder in the upcoming fuel injection.
摘要翻译： 废气净化装置包括燃烧模式转换器，其将发动机气缸中的燃烧从稀燃模式转换为富燃模式，以使LNT能够减少废气中所含的NOx。 燃烧模式移动器被配置为：当燃烧处于稀燃模式时，估计由燃料喷射器进行的燃料喷射的产生转矩的燃料量; 在燃烧从稀燃模式转变为富燃模式期间估计即将到来的燃料喷射的过氧比; 基于过氧比估计即将到来的燃料喷射的燃料燃烧百分比; 基于转矩产生燃料量和燃料燃烧百分比设定即将进行的燃料喷射的指令喷射量; 并且在即将到来的燃料喷射中控制燃料喷射器以将燃料的指令喷射量喷射到气缸中。
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