公开(公告)号：EP2674597A1

公开(公告)日：2013-12-18

申请号：EP11858136.2

申请日：2011-02-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： MIKASHIMA, Kazuya ,  NOGUCHI, Tomoyuki

IPC分类号： F02D21/08 ,  F02D41/12 ,  F02D45/00 ,  F02M25/07

CPC分类号： F02M25/0771 ,  F02D41/0055 ,  F02D41/123 ,  F02D2200/0406 ,  F02M26/05 ,  F02M26/23 ,  F02M26/30 ,  F02M26/39 ,  F02M26/50 ,  Y02T10/47

摘要： Provided is a control apparatus of the internal combustion engine capable of removing deposited foreign matters accumulated on an EGR valve without deteriorating a combustion state of the internal combustion engine. When an ECU judges that the vehicle is under deceleration ("YES" in Step S11) and under fuel cut operation ("YES" in Step S12), the ECU allows an EGR shutoff valve to be fully opened (Step S 13) and obtains an intake pressure "Pclose" under the EGR valve in the fully closed state (Step S 14). Then, the ECU allows the EGR valve to be switched to the fully opened state and obtains an intake pressure "Popen" under the EGR valve in the fully opened state (Step S 15). Then, the ECU calculates a difference ΔP between the intake pressures "Popen" and "Pclose", and drives the EGR shutoff valve to a fully closed state (Step S 19) on the condition that the difference ΔP is equal to or smaller than a threshold value "Pth1" ("NO" in Step S17). Then, the ECU drives the EGR valve to the fully opened state (Step S20), and subsequently to the fully closed state (Step S21).

摘要翻译： 本发明提供一种内燃机的控制装置，其能够在不损害内燃机的燃烧状态的情况下去除堆积在EGR阀上的堆积异物。 当ECU判定车辆处于减速状态（步骤S11中的“是”）和燃料切断操作下（步骤S12中的“是”）时，ECU允许EGR截止阀完全打开（步骤S13）并且获得 在全闭状态下的EGR阀下的进气压力“Pclose”（步骤S14）。 接着，ECU将EGR阀切换为全开状态，并取得全开状态下的EGR阀下的进气压力“Popen”（步骤S15）。 然后，ECU在计算出进气压力“Popen”与“Pclose”之间的差ΔP并且在差ΔP等于或小于a的条件下将EGR关闭阀驱动至全关状态（步骤S19） 阈值“Pth1”（步骤S17中的“否”）。 然后，ECU将EGR阀驱动至全开状态（步骤S20），然后驱动至全闭状态（步骤S21）。

公开(公告)号：EP2674604A1

公开(公告)日：2013-12-18

申请号：EP11858387.1

申请日：2011-02-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： HORIE, Nobuhiko ,  NOGUCHI, Tomoyuki ,  TOMITA, Takashi ,  MIKASHIMA, Kazuya ,  YASUE, Akinari

IPC分类号： F02M25/07

CPC分类号： F02M25/0737 ,  F02D41/0065 ,  F02M26/28 ,  F02M26/30 ,  F02M26/33 ,  F02M26/39 ,  F02M26/50 ,  F02M26/73 ,  Y02T10/47

摘要： Provided is an exhaust gas recirculation apparatus of an internal combustion engine which can effectively suppress condensed water from being generated in an EGR passage, compared with the conventional apparatus. The exhaust gas recirculation apparatus includes an EGR pipe formed therein with an EGR passage held in communication with the exhaust passage and the intake passage, an EGR cooler in the EGR passage to cool the EGR gas, a first valve provided in the EGR passage between the EGR cooler and the exhaust passage to selectively take an opened state or a closed state, the first valve being operative to shut off the EGR gas from flowing into the EGR passage when the first valve takes the closed state, a second valve provided in the EGR passage between the EGR cooler and the intake passage to adjust an amount of the EGR gas flowing into the intake passage.

摘要翻译： 提供了一种内燃机的排气再循环装置，与现有的装置相比，能够有效地抑制EGR通路中产生的冷凝水。 排气再循环装置包括：EGR管，其形成有与排气通道和进气通道保持连通的EGR通道; EGR通路中的EGR冷却器，用于冷却EGR气体;设置在EGR通道中的第一阀 EGR冷却器和排气通道以选择性地采取打开状态或关闭状态，当第一阀处于关闭状态时，第一阀可操作以截断EGR气体流入EGR通道，设置在EGR中的第二阀 EGR冷却器和进气通道之间的通道，以调节流入进气通道的EGR气体的量。