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    Exhaust gas recirculation device of internal combustion engine, and control method for the device
    5.
    发明授权
    Exhaust gas recirculation device of internal combustion engine, and control method for the device 有权
    内燃机废气再循环装置及装置的控制方法

    公开(公告)号：US08706385B2

    公开(公告)日：2014-04-22

    申请号：US12602693

    申请日：2008-06-06

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

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

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

    CPC分类号： F02D41/144 ,  F02D41/0072 ,  F02D41/123 ,  F02M26/05 ,  F02M26/06 ,  Y02T10/47

    摘要： An exhaust gas recirculation device of an internal combustion engine (1) including a low-pressure EGR passage (20), a high-pressure EGR passage (21), a low-pressure EGR valve (23) and a high-pressure EGR valve (24) further includes an air-fuel ratio sensor (12) that is disposed in the exhaust passage (4) upstream of the position of its connection with the low-pressure EGR passage (20). In the case where a predetermined fuel-cut condition is satisfied, an ECU (30) estimates the flow amounts of exhaust gas flowing in the low-pressure EGR passage (20) and the high-pressure EGR passage (21), on the basis of the oxygen concentrations acquired by the air-fuel ratio sensor (12) at timings at which the exhaust gases recirculated into the intake passage (3) via the low-pressure EGR passage (20) and via the high-pressure EGR passage (21) reach the air-fuel ratio sensor (12), respectively.

    摘要翻译： 一种内燃机（1）的废气再循环装置，包括低压EGR通路（20），高压EGR通路（21），低压EGR阀（23）和高压EGR阀 （24）还包括在与低压EGR通路（20）的连接位置上游设置在排气通道（4）中的空燃比传感器（12）。 在满足预定的燃料切断条件的情况下，ECU（30）基于在低压EGR通路（20）和高压EGR通路（21）中流动的排气的流量， 在排气通过低压EGR通道（20）再循环到进气通道（3）中的排气和经由高压EGR通道（21）的空气 - 燃料比传感器（12）获取的氧气浓度 ）分别到达空燃比传感器（12）。

    Soot discharge estimating device for internal combustion engines
    8.
    发明授权
    Soot discharge estimating device for internal combustion engines 失效
    内燃机烟灰排放估算装置

    公开(公告)号：US08457905B2

    公开(公告)日：2013-06-04

    申请号：US12812406

    申请日：2009-05-18

    申请人： Tomomi Onishi ,  Shigeki Nakayama

    发明人： Tomomi Onishi ,  Shigeki Nakayama

    IPC分类号： G01N31/00 ,  G01F25/00

    CPC分类号： F01N11/00 ,  F01N3/021 ,  F01N2550/04 ,  F01N2560/05 ,  F02D41/1446 ,  F02D41/1467 ,  F02D2041/0075 ,  F02D2041/1433 ,  F02D2200/0414 ,  G01M15/102 ,  G01N33/0036 ,  Y02A50/25 ,  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。 稳定排出量是稳定运行状态下的烟灰排出量，通过表格搜索取得。 对于影响烟灰排放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 烟炱放电量与因子的值，从而获得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 generation amount estimation apparatus for internal combustion engine
    9.
    发明授权
    Soot generation amount estimation apparatus for internal combustion engine 有权
    用于内燃机的烟尘产生量估计装置

    公开(公告)号：US07930922B2

    公开(公告)日：2011-04-26

    申请号：US11792665

    申请日：2006-07-13

    申请人： Tomomi Onishi ,  Takao Fukuma ,  Shigeki Nakayama ,  Yoshiki Takatori ,  Shuichi Kubo ,  Satoshi Yamazaki

    发明人： Tomomi Onishi ,  Takao Fukuma ,  Shigeki Nakayama ,  Yoshiki Takatori ,  Shuichi Kubo ,  Satoshi Yamazaki

    IPC分类号： G01N7/00

    CPC分类号： F02D41/029 ,  F01N9/002 ,  F02B29/0406 ,  F02B37/00 ,  F02D35/025 ,  F02D41/0065 ,  F02D41/1455 ,  F02D41/1467 ,  F02D2041/0017 ,  F02D2041/1433 ,  F02D2041/1437 ,  F02D2200/602 ,  F02M26/05 ,  F02M26/23 ,  F02M26/46 ,  Y02T10/47

    摘要： A soot generation amount estimation apparatus obtains a generation speed of a precursor of soot (accordingly, the concentration of the precursor) in consideration of formation of the precursor from fuel, thermal decomposition of the formed precursor, and formation of soot from the formed precursor, and estimates a generation speed of soot (accordingly, the concentration of soot (the generation amount of soot)) in consideration of formation of soot from the precursor, which depends on the concentration of the precursor, and oxidation of the formed soot. The apparatus employs a reaction model in which the reaction process in which soot is generated from fuel is divided into two steps; i.e., a reaction process in which a precursor is generated from fuel and a reaction process in which soot is generated from the precursor. Thus, phenomena, such as a “delay in soot generation” in the reaction process in which soot is generated from fuel, can be accurately simulated.

    摘要翻译： 烟炱发生量估计装置考虑到来自燃料的前体的形成，所形成的前体的热分解和来自所形成的前体的烟灰的形成，获得烟炱前体的生成速度（相应地，前体的浓度） 并且考虑到来自前体的烟灰的形成（其取决于前体的浓度）和形成的烟灰的氧化，估计烟灰的产生速度（因此，烟灰的浓度（烟灰的产生量））。 该装置采用反应模型，其中从燃料产生烟灰的反应过程分为两个步骤; 即其中从燃料产生前体的反应过程和从前体产生烟灰的反应过程。 因此，可以精确地模拟在燃料中产生烟灰的反应过程中的“烟灰产生的延迟”等现象。

    EXHAUST GAS RECIRCULATION APPARATUS FOR AN INTERNAL COMBUSTION ENGINE
    10.
    发明申请
    EXHAUST GAS RECIRCULATION APPARATUS FOR AN INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的排气回收装置

    公开(公告)号：US20110054762A1

    公开(公告)日：2011-03-03

    申请号：US12445558

    申请日：2008-05-20

    申请人： Shigeki Nakayama ,  Tomomi Onishi ,  Akio Matsunaga

    发明人： Shigeki Nakayama ,  Tomomi Onishi ,  Akio Matsunaga

    IPC分类号： F02M25/07

    CPC分类号： F02D41/144 ,  F02B37/127 ,  F02D41/0007 ,  F02D41/0072 ,  F02M26/05 ,  F02M26/06 ,  F02M26/22 ,  F02M26/45 ,  Y02T10/144 ,  Y02T10/47

    摘要： A technique is provided which, in an exhaust gas recirculation apparatus for an internal combustion engine, can calculate a low-pressure EGR rate and a high-pressure EGR rate in an accurate manner, and control the flow rates of both a low pressure EGR passage and a high pressure EGR passage in a closed-loop control manner, thereby to make the temperature of intake air and a supercharging pressure stable and to suppress the deterioration of exhaust emissions as well as the deterioration of power performance. The low pressure EGR rate, representative of the proportion of an amount of low pressure EGR gas to an amount of intake air sucked into the internal combustion engine, and the high pressure EGR rate, representative of the proportion of an amount of high pressure EGR gas to the amount of intake air, are calculated by using a CO2 concentration in an intake passage at a location downstream of a connection portion of the low pressure EGR passage and upstream of a connection portion of the high pressure EGR passage, a CO2 concentration in the intake passage at a location downstream the connection portion of the high pressure EGR passage, and a CO2 concentration of an exhaust gas discharged from the internal combustion engine (S103). The low pressure EGR rate and the high pressure EGR rate to be calculated are controlled to individual target values, respectively (S104).

    摘要翻译： 提供了一种在内燃机的排气再循环装置中能够以精确的方式计算低压EGR率和高压EGR率的技术，并且控制低压EGR通路 和高压EGR通路，从而使进气温度和增压压力稳定，并且抑制废气排放的劣化以及功率性能的劣化。 代表低压EGR气体的量与吸入内燃机的进气量的比例的低压EGR率和表示高压EGR气体的比例的高压EGR率 通过在低压EGR通路的连接部分的下游位置和高压EGR通路的连接部分的上游的位置处的进气通道中使用CO 2浓度来计算进气量， 在高压EGR通路的连接部分下游的位置和从内燃机排出的废气的CO 2浓度的进气通道（S103）。 将要计算的低压EGR率和高压EGR率分别控制到各个目标值（S104）。