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    EGR SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME
    4.
    发明申请
    EGR SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME 有权
    用于内燃机的EGR系统及其控制方法

    公开(公告)号：US20090283077A1

    公开(公告)日：2009-11-19

    申请号：US12441241

    申请日：2008-01-10

    申请人： Hiroki Murata ,  Masahiro Nagae ,  Hajime Shimizu ,  Shigeki Nakayama ,  Tomomi Onishi

    发明人： Hiroki Murata ,  Masahiro Nagae ,  Hajime Shimizu ,  Shigeki Nakayama ,  Tomomi Onishi

    IPC分类号： F02M25/07 ,  F02B33/44

    CPC分类号： F02D41/0065 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/0007 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/24 ,  Y02T10/47

    摘要： An EGR system includes a high-pressure EGR unit and a low-pressure EGR unit. During the steady operation of an internal combustion engine, the high-pressure EGR gas and the low-pressure EGR gas are mixed with each other at a mixture ratio, in which the ratio of the high-pressure EGR gas amount to the entire EGR gas amount is higher than that in a known mixture ratio, and then recirculated back to the internal combustion engine. In the engine speed-up transitional operation period, the opening amount of a high-pressure EGR valve is adjusted to the opening amount that is much smaller than the target opening amount corresponding to the target operation mode. Thus, it is possible to suppress occurrence of the situation where the entire EGR gas amount is excessive in the period in which the low-pressure EGR gas amount does not decrease by a sufficient amount.

    摘要翻译： EGR系统包括高压EGR单元和低压EGR单元。 在内燃机的稳定运行中，高压EGR气体和低压EGR气体以混合比混合，其中高压EGR气体量与整个EGR气体的比率 量高于已知混合比，然后再循环回内燃机。 在发动机加速过渡运转期间，将高压EGR阀的开度调整为远小于与目标运转模式对应的目标开度的开度。 因此，可以抑制在低压EGR气体量没有减少足够量的时段内EGR排气总量过多的情况的发生。

    EGR system for internal combustion engine and method for controlling the same
    6.
    发明授权
    EGR system for internal combustion engine and method for controlling the same 有权
    内燃机EGR系统及其控制方法

    公开(公告)号：US08220443B2

    公开(公告)日：2012-07-17

    申请号：US12441241

    申请日：2008-01-10

    申请人： Hiroki Murata ,  Masahiro Nagae ,  Hajime Shimizu ,  Shigeki Nakayama ,  Tomomi Onishi

    发明人： Hiroki Murata ,  Masahiro Nagae ,  Hajime Shimizu ,  Shigeki Nakayama ,  Tomomi Onishi

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

    CPC分类号： F02D41/0065 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/0007 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/24 ,  Y02T10/47

    摘要： An EGR system includes a high-pressure EGR unit and a low-pressure EGR unit. During the steady operation of an internal combustion engine, the high-pressure EGR gas and the low-pressure EGR gas are mixed with each other at a mixture ratio, in which the ratio of the high-pressure EGR gas amount to the entire EGR gas amount is higher than that in a known mixture ratio, and then recirculated back to the internal combustion engine. In the engine speed-up transitional operation period, the opening amount of a high-pressure EGR valve is adjusted to the opening amount that is much smaller than the target opening amount corresponding to the target operation mode. Thus, it is possible to suppress occurrence of the situation where the entire EGR gas amount is excessive in the period in which the low-pressure EGR gas amount does not decrease by a sufficient amount.

    摘要翻译： EGR系统包括高压EGR单元和低压EGR单元。 在内燃机的稳定运行中，高压EGR气体和低压EGR气体以混合比混合，其中高压EGR气体量与整个EGR气体的比率 量高于已知混合比，然后再循环回内燃机。 在发动机加速过渡运转期间，将高压EGR阀的开度调整为远小于与目标运转模式对应的目标开度的开度。 因此，可以抑制在低压EGR气体量没有减少足够量的时段内EGR排气总量过多的情况的发生。

    EGR SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME
    7.
    发明申请
    EGR SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME 审中-公开
    用于内燃机的EGR系统及其控制方法

    公开(公告)号：US20100000500A1

    公开(公告)日：2010-01-07

    申请号：US12440668

    申请日：2007-09-27

    申请人： Hajime Shimizu ,  Masahiro Nagae ,  Hiroyuki Haga

    发明人： Hajime Shimizu ,  Masahiro Nagae ,  Hiroyuki Haga

    IPC分类号： F02B47/08 ,  F02B33/44 ,  F01N9/00

    CPC分类号： F02D41/0065 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/005 ,  F02D2200/1015 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/24 ,  F02M26/28 ,  F02M26/38 ,  Y02T10/47

    摘要： An EGR system includes a high-pressure EGR passage that provides communication between an exhaust pipe, at a portion upstream of a turbine of a turbocharger, and an intake pipe, at a portion downstream of a compressor; a low-pressure EGR passage that provides communication between the exhaust pipe, at a portion downstream of the turbine, and the intake passage, at a portion upstream of the compressor; and an exhaust gas catalyst provided upstream of a position at which the low-pressure EGR passage is connected to the exhaust pipe. When an internal combustion engine is in the transitional state from the low-load operating state to the high-load operating state (S303), if incomplete combustion is detected in the internal combustion engine (S304) and the bed temperature of the exhaust gas catalyst is lower than the reference temperature (S305), the high-pressure EGR gas amount is made larger than the prescribed high-pressure EGR gas amount determined based on the operating state of the internal combustion engine (S306). Thus, an excessive decrease in the intake air temperature is suppressed, and therefore occurrence of incomplete combustion is suppressed.

    摘要翻译： EGR系统包括高压EGR通道，其在压缩机的下游部分处提供在涡轮增压器的涡轮机上游的排气管与进气管之间的连通; 低压EGR通道，其在所述压缩机的上游部分处，在所述涡轮机下游的所述排气管与所述进气通道之间提供连通; 以及设置在低压EGR通路与排气管连接的位置上游的废气催化剂。 当内燃机处于从低负载运行状态到高负载运转状态的过渡状态（S303）时，如果在内燃机中检测到不完全燃烧（S304）和排气催化剂的床温度 低于基准温度（S305），使高压EGR气体量比基于内燃机的运转状态确定的规定的高压EGR气体量大（S306）。 因此，能够抑制进气温度的过度降低，抑制不完全燃烧的发生。