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    Exhaust gas recirculation device of engine
    3.
    发明授权
    Exhaust gas recirculation device of engine 有权
    发动机废气再循环装置

    公开(公告)号：US08560213B2

    公开(公告)日：2013-10-15

    申请号：US12675656

    申请日：2009-09-03

    申请人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    发明人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    IPC分类号： B60T7/12 ,  G05D1/00 ,  G06F7/00 ,  G06F17/00 ,  F02M25/07

    CPC分类号： F02D35/026 ,  F02D41/0065 ,  F02D2250/36 ,  F02M26/05 ,  F02M26/06 ,  F02M35/1038 ,  F02M37/06 ,  Y02T10/47

    摘要： An exhaust gas recirculation device of an engine (10) of the invention comprises a first exhaust gas recirculation passage (50) for connecting an exhaust passage (40) and an intake passage (30) to each other and introducing into the intake passage an exhaust gas discharged from a combustion chamber (21) to the exhaust passage, and a second exhaust gas recirculation passage (55) for connecting the exhaust passage upstream of a part of the exhaust passage connected to the first exhaust gas recirculation passage and the intake passage downstream of a part of the intake passage connected to the first exhaust gas recirculation passage to each other and introducing into the intake passage the exhaust gas discharged from the combustion chamber to the exhaust passage. The amount of the exhaust gas introduced into the intake passage via the first exhaust gas recirculation passage is controlled to a first target exhaust gas recirculation amount and the amount of the exhaust gas introduced into the intake passage via the second exhaust gas recirculation passage is controlled to a second target exhaust gas recirculation amount. The amount of exhaust gas introduced into the first and second exhaust gas passages is controlled in accordance with an allowable upper flame temperature.

    摘要翻译： 本发明的发动机（10）的废气再循环装置包括：第一排气再循环通道（50），用于将排气通道（40）和进气通道（30）彼此连接，并将进气通道排出 从燃烧室（21）排出到排气通道的气体和第二排气再循环通路（55），其连接在与第一废气再循环通路连通的排气通路的一部分和下游的进气通路 所述进气通路的一部分与所述第一废气再循环通道相连，并将从所述燃烧室排出的废气引入到所述进气通道中。 经由第一废气再循环通道引入进气通道的排气量被控制到第一目标废气再循环量，并且经由第二废气再循环通道引入进气通道的排气量被控制为 第二目标废气再循环量。 根据允许的上限火焰温度来控制引入第一和第二废气通道的废气量。

    EXHAUST GAS RECIRCULATION DEVICE OF ENGINE
    4.
    发明申请
    EXHAUST GAS RECIRCULATION DEVICE OF ENGINE 有权

    公开(公告)号：US20110155109A1

    公开(公告)日：2011-06-30

    申请号：US12675656

    申请日：2009-09-03

    申请人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    发明人： Tomomi Onishi ,  Tomihisa Oda ,  Bungo Kawaguguchi ,  Masaaki Satou ,  Satoshi Kobayakawa ,  Takeru Shirasawa

    IPC分类号： F02M25/07

    CPC分类号： F02D35/026 ,  F02D41/0065 ,  F02D2250/36 ,  F02M26/05 ,  F02M26/06 ,  F02M35/1038 ,  F02M37/06 ,  Y02T10/47

    摘要： An exhaust gas recirculation device of an engine (10) of the invention comprises a first exhaust gas recirculation passage (50) for connecting an exhaust passage (40) and an intake passage (30) to each other and introducing into the intake passage an exhaust gas discharged from a combustion chamber (21) to the exhaust passage, and a second exhaust gas recirculation passage (55) for connecting the exhaust passage upstream of a part of the exhaust passage connected to the first exhaust gas recirculation passage and the intake passage downstream of a part of the intake passage connected to the first exhaust gas recirculation passage to each other and introducing into the intake passage the exhaust gas discharged from the combustion chamber to the exhaust passage. The amount of the exhaust gas introduced into the intake passage via the first exhaust gas recirculation passage is controlled to a first target exhaust gas recirculation amount and the amount of the exhaust gas introduced into the intake passage via the second exhaust gas recirculation passage is controlled to a second target exhaust gas recirculation amount. When a temperature of the flame on the combustion of a fuel is lower than or equal to an allowable upper limit flame temperature, a first reference exhaust gas recirculation amount set depending on the operation condition of the engine, is set as the first target exhaust gas recirculation amount and a second reference exhaust gas recirculation amount set depending on the operation condition of the engine, is set as the second target exhaust gas recirculation amount. When the temperature of the flame on the combustion of the fuel is higher than the allowable upper limit flame temperature, one of the first reference exhaust gas recirculation gas amount and an amount smaller than the first reference exhaust gas recirculation gas amount is set as the first target exhaust gas recirculation amount and an amount larger than the reference second exhaust gas recirculation amount is set as the second target exhaust gas recirculation amount.

    Soot discharge estimating device for internal combustion engines
    5.
    发明授权
    Soot discharge estimating device for internal combustion engines 有权
    内燃机烟灰排放估算装置

    公开(公告)号：US09008949B2

    公开(公告)日：2015-04-14

    申请号：US13376052

    申请日：2009-06-03

    申请人： Tomomi Onishi

    发明人： Tomomi Onishi

    IPC分类号： F02D41/24 ,  F02D41/02 ,  F01N3/021 ,  F01N11/00 ,  F02D41/14

    CPC分类号： F02D41/029 ,  F01N3/021 ,  F01N11/00 ,  F01N2900/1606 ,  F01N2900/1611 ,  F02D41/1467 ,  Y02T10/20 ,  Y02T10/47

    摘要： A soot discharge amount is calculated by multiplying a “steady discharge amount” by a “transient correction value.” The steady discharge amount is a Soot discharge amount in a steady operation state, and is acquired through table search. For each of a plurality of factors which affect the Soot discharge amount, a steady value (value obtained through table search) of the factor and a transient value (current value) of the factor are substituted for a characteristic equation which represents a change in the Soot discharge amount with the value of the factor, whereby a steady characteristic value and a transient characteristic value are acquired. The “ratio between the steady characteristic value and the transient characteristic value” is then calculated for each factor. The transient correction value is obtained by multiplying together all values of the “ratio between the steady characteristic value and the transient characteristic value” obtained for the factors.

    摘要翻译： 通过将“稳定排出量”乘以“瞬时校正值”来计算烟灰排放量。稳定排放量是稳定运行状态下的烟灰排放量，并且通过表格搜索获取。 对于影响烟灰放电量的多个因素中的每个因素，将因子的稳定值（通过表搜索获得的值）和因子的瞬时值（当前值）代入表示变化的特征方程 利用因子值对烟灰放电量进行控制，从而得到稳定特性值和瞬态特性值。 然后针对每个因子计算“稳定特性值与瞬态特性值之比”。 通过将所有因子获得的“稳定特性值与瞬态特性值之比”的所有值相乘，从而获得瞬态校正值。

    SOOT DISCHARGE ESTIMATING DEVICE FOR INTERNAL COMBUSTION EINGINES
    7.
    发明申请
    SOOT DISCHARGE ESTIMATING DEVICE FOR INTERNAL COMBUSTION EINGINES 有权
    用于内燃机的排放量估算装置

    公开(公告)号：US20120143472A1

    公开(公告)日：2012-06-07

    申请号：US13376052

    申请日：2009-06-03

    申请人： Tomomi Onishi

    发明人： Tomomi Onishi

    IPC分类号： F02D28/00 ,  F01N11/00

    CPC分类号： F02D41/029 ,  F01N3/021 ,  F01N11/00 ,  F01N2900/1606 ,  F01N2900/1611 ,  F02D41/1467 ,  Y02T10/20 ,  Y02T10/47

    摘要： A Soot discharge amount is calculated by multiplying a “steady discharge amount” by a “transient correction value.” The steady discharge amount is a Soot discharge amount in a steady operation state, and is acquired through table search. For each of a plurality of factors which affect the Soot discharge amount, a steady value (value obtained through table search) of the factor and a transient value (current value) of the factor are substituted for a characteristic equation which represents a change in the Soot discharge amount with the value of the factor, whereby a steady characteristic value and a transient characteristic value are acquired. The “ratio between the steady characteristic value and the transient characteristic value” is then calculated for each factor. The transient correction value is obtained by multiplying together all values of the “ratio between the steady characteristic value and the transient characteristic value” obtained for the factors.” As one of factors, a “mist average equivalence ratio at a timing of starting ignition” that strongly and directly affects a Soot generation speed is contained. The transient correction value is calculated as a “coefficient which represents the degree of deviation of the Soot discharge amount from the steady discharge amount” in consideration of the influence of “deviation of the transient value from the steady value” for each factor in a transient operation state.

    摘要翻译： 通过将“稳定排出量”乘以“瞬时校正值”来计算烟灰排出量。稳定排出量是稳定运行状态下的烟灰排出量，通过表格搜索获取。 对于影响烟灰放电量的多个因素中的每个因素，将因子的稳定值（通过表搜索获得的值）和因子的瞬时值（当前值）代入表示变化的特征方程 利用因子值对烟灰放电量进行控制，从而得到稳定特性值和瞬态特性值。 然后针对每个因子计算“稳定特性值与瞬态特性值之比”。 通过将所得到的“稳定特性值与瞬时特性值之比”的所有值相乘，可获得瞬态校正值。“作为其中一个因素，”启动点火时刻的雾平均当量比“ 强烈地直接影响烟灰生成速度。 考虑到瞬态值的瞬时值与稳定值的偏差对瞬态中的每个因子的影响，瞬时校正值被计算为“表示烟灰排放量与稳定排出量的偏差程度的系数” 操作状态

    Gas-mixture-state estimation apparatus for internal combustion engine and emission-generation-amount estimation apparatus
    8.
    发明授权
    Gas-mixture-state estimation apparatus for internal combustion engine and emission-generation-amount estimation apparatus 有权
    内燃机用气体混合状态推定装置和发光量估计装置

    公开(公告)号：US07848871B2

    公开(公告)日：2010-12-07

    申请号：US11886595

    申请日：2006-03-24

    申请人： Tomomi Onishi ,  Shigeki Nakayama

    发明人： Tomomi Onishi ,  Shigeki Nakayama

    IPC分类号： B60T7/12 ,  F02B23/00

    CPC分类号： F02D41/402 ,  F02D35/02 ,  F02D35/024 ,  F02D35/026 ,  F02D41/1458 ,  F02D41/1462 ,  F02D41/1467 ,  F02D2041/1433 ,  F02D2250/31 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/44

    摘要： This apparatus equally divides an injection period TAU into three periods; i.e., front, intermediate, and rear periods, and assumes that first injection (mass Q(1)) corresponding to the “front period” is executed at one time at a fuel injection start timing, second injection (mass Q(2)) corresponding to the “intermediate period” is executed at one time when ⅓ TAU has elapsed after the first injection, and third injection (mass Q(3)) corresponding to the “rear period” is executed at one time when ⅓ TAU has elapsed after the second injection. A first gas mixture based on the first injection, a second gas mixture based on the second injection, and a third gas mixture based on the third injection are individually handled, and the excess air ratio of gas mixture, the state (temperature, etc.) of gas mixture, and the emission generation amounts in gas mixture are estimated for each gas mixture.

    摘要翻译： 该装置将喷射周期TAU等分成三个周期; 即，在燃料喷射开始时刻，第二次喷射（质量Q（2））中，一次执行与“前期”对应的第一喷射（质量Q（1）），即前，中，后期间， 在第一次注射之后经过1/3NUU时，一次执行与“中间期间”对应的“中间期间”，并且在经过了1/3TU后，一次执行与“后期”对应的第三次注入（质量Q（3）） 第二次注射。 分别处理基于第一次注入的第一气体混合物，基于第二次喷射的第二气体混合物和基于第三次喷射的第三气体混合物，并且混合气体的过量空气比，状态（温度等） ），并且对于每种气体混合物估计气体混合物中的排放量。

    EXHAUST-GAS RECIRCULATION APPARATUS AND EXHAUST-GAS RECIRCULATION FLOW RATE ESTIMATION METHOD FOR INTERNAL COMBUSTION ENGINES
    9.
    发明申请
    EXHAUST-GAS RECIRCULATION APPARATUS AND EXHAUST-GAS RECIRCULATION FLOW RATE ESTIMATION METHOD FOR INTERNAL COMBUSTION ENGINES 审中-公开
    排气再循环装置和排气回送流量估算方法内燃机

    公开(公告)号：US20100199639A1

    公开(公告)日：2010-08-12

    申请号：US12678817

    申请日：2008-09-16

    申请人： Akio Matsunaga ,  Shigeki Nakayama ,  Tomomi Onishi ,  Akiyuki Iemura

    发明人： Akio Matsunaga ,  Shigeki Nakayama ,  Tomomi Onishi ,  Akiyuki Iemura

    IPC分类号： F02M25/07 ,  F02D41/14 ,  G01M15/10

    CPC分类号： F02D41/1445 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/0072 ,  F02D41/144 ,  F02D41/18 ,  F02M26/05 ,  F02M26/06 ,  F02M26/10 ,  F02M26/15 ,  F02M26/23 ,  F02M26/38 ,  F02M26/46 ,  F02M26/47 ,  Y02T10/47

    摘要： An exhaust-gas recirculation apparatus for an internal combustion engine has a high-pressure EGR passage (20), a low-pressure EGR passage (21), a high-pressure EGR valve (22), and a low-pressure EGR valve (24) and performs open-loop control to the low-pressure EGR valve (24). The flow rate (Ghpl) of EGR gas flowing in the high-pressure EGR passage (20) and the flow rate (Glpl) of EGR gas flowing in the low-pressure EGR gas (21) are estimated based on the oxygen concentration (O2s) in the gas at the portion of the intake passage (3) downstream of the portion to which exhaust gas is delivered from the high-pressure EGR passage (2), the flow rate (Gdpf) of the gas passing through an exhaust-gas purifying catalyst unit (11) provided in the exhaust passage between the exhaust-gas inlets of the high-pressure EGR passage (20) and the low-pressure EGR passage (21), the flow rate (Gafm) of fresh air, and the fuel amount (Q) supplied to the cylinders (2) of the internal combustion engine per unit time.

    摘要翻译： 用于内燃机的废气再循环装置具有高压EGR通路（20），低压EGR通路（21），高压EGR阀（22）和低压EGR阀（ 24），对低压EGR阀（24）进行开环控制。 基于氧浓度（O2s）估计在高压EGR通路（20）中流动的EGR气体的流量（Ghpl）和在低压EGR气体（21）中流动的EGR气体的流量（Glpl） ）在从高压EGR通路（2）排出废气部分的下游侧的进气通路（3）的部分的气体中，通过排气的气体的流量（Gdpf） 设置在高压EGR通路（20）和低压EGR通路（21）的排气入口之间的排气通路中的净化催化剂单元（11），新鲜空气的流量（Gafm） 每单位时间供给到内燃机的气缸（2）的燃料量（Q）。

    Exhaust gas control system for internal combustion engine and method for controlling the same
    10.
    发明授权
    Exhaust gas control system for internal combustion engine and method for controlling the same 有权
    内燃机排气控制系统及其控制方法

    公开(公告)号：US08453446B2

    公开(公告)日：2013-06-04

    申请号：US12522749

    申请日：2008-01-23

    申请人： Tomomi Onishi ,  Akio Matsunaga ,  Shigeki Nakayama

    发明人： Tomomi Onishi ,  Akio Matsunaga ,  Shigeki Nakayama

    IPC分类号： F02B33/44 ,  F02B77/08 ,  F02B47/08 ,  F02M25/07 ,  F02D17/04

    CPC分类号： F02D41/0007 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/0065 ,  F02D41/123 ,  F02D2041/0017 ,  F02M25/06 ,  F02M26/05 ,  F02M26/06 ,  F02M26/10 ,  F02M26/15 ,  F02M26/23 ,  Y02T10/144 ,  Y02T10/47

    摘要： An exhaust gas control system for an internal combustion engine includes a turbocharger that includes a compressor arranged in an intake passage, and a turbine arranged in an exhaust passage; a low-pressure EGR unit that recirculates a portion of exhaust gas back to the internal combustion engine through a low-pressure EGR passage that provides communication between the exhaust passage, at a portion downstream of the turbine, and the intake passage, at a portion upstream of the compressor; a low-pressure EGR valve that is provided in the low-pressure EGR passage, and that changes the flow passage area of the low-pressure EGR passage; and a valve control unit that executes an opening/closing control over the low-pressure EGR valve. When it is determined that the internal combustion engine is under a predetermined low-temperature environment, the low-pressure EGR valve is kept closed while the internal combustion engine is in the fuel-supply cutoff operation mode.

    摘要翻译： 一种用于内燃机的排气控制系统包括：涡轮增压器，包括布置在进气通道中的压缩机和布置在排气通道中的涡轮机; 低压EGR单元，其通过低压EGR通道将排气的一部分再循环回内燃机，所述低压EGR通道在涡轮机下游的部分和进气通道之间提供排气通道与进气通道之间的连通 压缩机上游; 低压EGR阀，其设置在低压EGR通路中，并且改变低压EGR通路的流路面积; 以及阀控制单元，其执行低压EGR阀的打开/关闭控制。 当确定内燃机处于预定的低温环境下时，在内燃机处于燃料供给切断操作模式的同时，低压EGR阀保持关闭。