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    • 41. 发明申请
    • CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 内燃机控制装置
    • US20120209496A1
    • 2012-08-16
    • US13502646
    • 2009-12-22
    • Shigeki Miyashita
    • Shigeki Miyashita
    • F02D41/26
    • F02M25/0713F02B29/0406F02B37/18F02D41/0007F02D41/221F02D2200/0406F02M26/05F02M26/10F02M26/23Y02T10/144Y02T10/40
    • This invention provides a control apparatus for an internal combustion engine that can accurately determine the existence or non-existence of an operational abnormality of a WGV in an internal combustion engine with a turbocharger that is equipped with an EGR system. The internal combustion engine includes a turbocharger, a WGV arranged in an exhaust bypass passage, an EGR valve arranged in an EGR passage, and a pressure sensor that acquires an intake pipe pressure of the internal combustion engine, The existence or non-existence of an operational abnormality of the WGV is determined based on a change in an intake pipe pressure when a valve opening request to the WGV is acquired. At such time, the EGR valve is controlled so as to enter a predetermined open state prior to the valve opening request to the WGV. Further, the existence or non-existence of an operational abnormality of the EGR valve is also jointly determined based on a change in the intake pipe pressure when a valve opening request to the EGR valve is acquired.
    • 本发明提供一种用于内燃机的控制装置,其能够利用具有EGR系统的涡轮增压器精确地确定内燃机中的WGV的操作异常的存在或不存在。 内燃机包括涡轮增压器,布置在排气旁路通道中的WGV,配置在EGR通路中的EGR阀和获取内燃机的进气管压力的压力传感器。存在或不存在 基于当获取对WGV的开阀请求时的进气管压力的变化来确定WGV的操作异常。 此时,在对WGV的开阀请求之前,EGR阀被控制为进入预定的打开状态。 此外,当获取对EGR阀的开阀请求时,也基于进气管压力的变化共同确定EGR阀的操作异常的存在或不存在。
    • 42. 发明申请
    • CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 内燃机控制装置
    • US20110289904A1
    • 2011-12-01
    • US13001706
    • 2010-04-12
    • Shigeki Miyashita
    • Shigeki Miyashita
    • F02M25/06
    • F02D41/0295F01N13/107F01N2430/06F01N2900/1624F02D41/0065F02D41/0082F02D41/126F02M26/35F02M26/43
    • An object of the present invention is that after return from fuel cut, an oxygen storage amount in a catalyst in an exhaust path and an oxygen storage amount in a catalyst in an exhaust gas recirculating path are promptly adjusted to be in appropriate states, respectively. A control apparatus for an internal combustion engine of the present invention controls the internal combustion engine including a recirculating gas generating cylinder and a recirculating gas nongenerating cylinder. The control apparatus includes: an exhaust gas recirculating path for connecting the exhaust path through which exhaust gas only in the recirculating gas generating cylinder is delivered and an intake system; a recirculating catalyst provided on the exhaust gas recirculating path; and rich control means that performs rich control for controlling an air-fuel ratio to be temporarily richer than a theoretical air-fuel ratio when fuel injection is restarted after return from the fuel cut. The rich control means includes air-fuel ratio control means that controls an air-fuel ratio in the recirculating gas generating cylinder to be richer than an air-fuel ratio in the recirculating gas nongenerating cylinder when the rich control and an exhaust gas recirculation by the exhaust gas recirculating path are simultaneously performed.
    • 本发明的目的在于,在从燃料切断返回后,排气路径中的催化剂中的氧气储存量和废气再循环路径中的催化剂中的储氧量分别迅速调整为适当的状态。 本发明的内燃机的控制装置控制包括再循环气体发生气缸和再循环气体非发动气缸的内燃机。 控制装置包括:废气再循环路径,用于连接仅排出循环气体发生气缸中的废气的排气路径和进气系统; 设置在废气再循环路径上的再循环催化剂; 以及丰富的控制装置,其在从燃料切断返回之后重新启动燃料喷射时,执行控制空燃比的理想空燃比的浓缩控制。 丰富的控制装置包括空燃比控制装置,当富控制和排气再循环时,控制循环气体发生气缸中的空燃比比循环气体非发动气缸中的空燃比更浓 排气再循环路径同时进行。
    • 45. 发明申请
    • CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 内燃机控制装置
    • US20110126812A1
    • 2011-06-02
    • US13056070
    • 2008-11-19
    • Shigeki Miyashita
    • Shigeki Miyashita
    • F02D41/00
    • F02D41/1454F01N13/107F02B37/025F02B37/18F02D41/0007Y02T10/144
    • The present invention intends to perform control for detecting a change in air-fuel ratio with high accuracy by an exhaust gas sensor in an internal combustion engine having a turbocharger with a wastegate valve. A control apparatus for an internal combustion engine according to the present invention includes: a turbocharger; a wastegate through which an exhaust gas passes while bypassing a turbine; a wastegate valve for opening/closing the wastegate; an exhaust gas sensor provided in an exhaust passage on the downstream side from the turbine and the wastegate valve; and air-fuel ratio change detection controlling means for executing air-fuel ratio change detection control to change an air-fuel ratio on the upstream side from the turbine and the wastegate valve and detect a change in the air-fuel ratio by the exhaust gas sensor. The air-fuel ratio change detection controlling means executes the air-fuel ratio change detection control when the opening degree of the wastegate valve is less than a predetermined value.
    • 本发明旨在通过具有带有废气门阀的涡轮增压器的内燃机中的排气传感器以高精度检测空燃比变化的控制。 根据本发明的用于内燃机的控制装置包括:涡轮增压器; 排气通过旁通涡轮的废气门; 用于打开/关闭废气门的废气门阀; 废气传感器,其设置在从所述涡轮机和所述废气门阀的下游侧的排气通路中; 以及空燃比变化检测控制单元,用于执行空燃比变化检测控制,以改变来自涡轮机和废气门阀的上游侧的空燃比,并且通过排气检测空燃比的变化 传感器。 当废气门阀的开度小于预定值时,空燃比变化检测控制装置执行空燃比变化检测控制。
    • 46. 发明申请
    • CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
    • 内燃机控制装置
    • US20110083649A1
    • 2011-04-14
    • US12999944
    • 2009-04-17
    • Shigeki Miyashita
    • Shigeki Miyashita
    • F02M25/07
    • F02D13/06F02D41/0055F02D41/0087F02D2041/0017F02D2200/0406F02M26/43F02M26/64F02M35/116Y02T10/18Y02T10/47
    • In an internal combustion engine which can switch the number of cylinders in operation between the total number of cylinders and some of the cylinders, an EGR rate at a time of a transitional operation can be kept correct at a time of any of a full cylinder operation and a partial cylinder operation. A throttle is operated to an opening degree corresponding to an accelerator operating amount and the number of cylinders in operation so that outputs with respective to the accelerator operating amount become equal at the time of the full cylinder operation and at the time of the partial cylinder operation. When the opening degree of the throttle is changed due to change in the accelerator operating amount, the opening degree of the EGR valve is changed at a relatively high speed at the time of the full cylinder operation, and the opening degree of the EGR valve is changed at a relatively low speed at the time of the partial cylinder operation. The opening degree of the EGR valve is preferably changed at a speed corresponding to a change speed of pressure in a surge tank.
    • 在可以在总气缸数与一些气缸之间切换运转中的气缸数的内燃机中,在全气缸运转中的任一时刻,过渡运转时的EGR率可以保持正确 和部分气缸操作。 油门操作到对应于加速器操作量的开度和操作中的气缸数,使得在全缸操作时和在部分气缸操作时相对于加速器操作量的输出变得相等 。 当节气门的开度由于加速器操作量的变化而改变时,EGR气门的开度在全气缸运转时以相对高的速度变化,EGR阀的开度为 在部分气缸操作时以相对低的速度改变。 EGR阀的开度优选以对应于缓冲罐中的压力变化速度的速度进行变化。
    • 49. 发明授权
    • Exhaust gas control apparatus for internal combustion engine
    • 内燃机排气控制装置
    • US07305820B2
    • 2007-12-11
    • US10573702
    • 2004-10-14
    • Shigeki Miyashita
    • Shigeki Miyashita
    • F01N3/00
    • F01N3/0814B01D53/9431F01N3/0807F01N3/0842F01N13/009F01N13/0093F01N13/0097F01N13/011F01N2570/14F01N2570/16Y02A50/2344
    • A converter (70) which houses a NOx storage/reduction catalyst is provided in an exhaust passage (2) of an engine (1). At a front half portion (inlet side portion) (7a) of a carrier of the NOx storage/reduction catalyst in the converter (70), the amount of an oxygen storage component is made less than it is at a rear half portion (outlet side portion) (7b) of the carrier, and a NOx storage capacity is made larger than it is at the rear half portion (7b) of the carrier. As a result, unpurified NOx released from the front half portion (7a) of the carrier at the beginning of a rich spike due to an02 storage operation is able to be stored in the rear half portion (7b) of the carrier, and so is not exhausted outside the catalyst Moreover, the amount of HC and CO components in the exhaust gas that are needlessly consumed by the 02 storage operation without being used to purify NOx is reduced, making it possible to purify NOx efficiently.
    • 在发动机(1)的排气通路(2)中设置容纳有NOx吸留还原催化剂的A转炉(70)。 在转化器(70)中的NOx储存还原催化剂的载体的前半部(入口侧部分)(7a)处,使得储氧成分的量比后半部分 出口侧部分)(7b),并且使NOx存储容量大于载体的后半部分(7b)上的NOx储存容量。 结果,由于<02>存储操作而在富穗开始时从载体的前半部分(7a)释放的未纯化的NOx能够被存储在后半部分 7 b)的载体,因此在催化剂外没有耗尽。另外,不用于净化NOx的废气中不必要地消耗的废气中的HC和CO组分的量 减少,可以有效地净化NOx。