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    • 24. 发明专利
    • Internal combustion engine
    • 内燃机
    • JP2006112273A
    • 2006-04-27
    • JP2004298858
    • 2004-10-13
    • Toyota Motor Corpトヨタ自動車株式会社
    • NAKATANI KOICHIRO
    • F02M25/07
    • F02M26/35F02B29/0406F02M26/05F02M26/25
    • PROBLEM TO BE SOLVED: To recirculate EGR gas of the further proper temperature in response to an engine load of an internal combustion engine, while restraining the occurrence of inconvenience of a component of an EGR device, in the internal combustion engine having the EGR device. SOLUTION: In this internal combustion engine having the EGR device 21, the EGR device 21 has a main EGR passage 22a, an EGR cooler 23 arranged in the passage, a pre-cooler catalyst 25 arranged on the upstream side of the EGR cooler 23, a first EGR bypass passage 22c for bypassing exhaust gas on the upstream side of the pre-cooler catalyst 25 to the downstream side of the EGR cooler 23, a second EGR bypass passage 22b for bypassing the exhaust gas on the downstream side of the pre-cooler catalyst 25 and on the upstream side of the EGR cooler 23 to the downstream side of the EGR cooler 23, and an EGR gas distributing means 26 for adjusting an EGR gas quantity flowing in the main EGR passage 22a, the first EGR bypass passage 22c and the second EGR bypass passage 22b. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了在内燃机的发动机负荷下再循环具有适当温度的EGR气体,同时抑制EGR装置的部件的不便的发生,在具有 EGR装置。 解决方案:在具有EGR装置21的这种内燃机中,EGR装置21具有主EGR通路22a,布置在通道中的EGR冷却器23,布置在EGR的上游侧的预冷器催化剂25 冷却器23,用于将预冷器催化剂25的上游侧的废气旁路到EGR冷却器23的下游侧的第一EGR旁路通路22c,用于旁路EGR冷却器23的下游侧的排气的第二EGR旁路通路22b, 预冷器催化剂25和EGR冷却器23的上游侧到EGR冷却器23的下游侧,以及用于调节在主EGR通道22a中流动的EGR气体量的EGR气体分配装置26,第一EGR 旁路通路22c和第二EGR旁路通路22b。 版权所有(C)2006,JPO&NCIPI
    • 25. 发明专利
    • Exhaust gas recirculating device
    • 排气再循环装置
    • JP2005337141A
    • 2005-12-08
    • JP2004158143
    • 2004-05-27
    • Toyota Motor Corpトヨタ自動車株式会社
    • NAKATANI KOICHIRO
    • F02M25/07F02D21/08
    • F02M26/33F02M26/05F02M26/25F02M26/28
    • PROBLEM TO BE SOLVED: To provide an exhaust gas recirculating device capable of improving fuel economy by materializing effective heat exchange between EGR gas and lubricating oil. SOLUTION: This invented exhaust gas recirculating device is provided with an EGR pipe 13 recirculating exhaust gas to an intake system of an engine 1, an EGR cooler 14 provided on the EGR pipe 13 and cooling exhaust gas in the EGR pipe 13 by using lubricating oil of the engine 1 as coolant, a bypass passage 16 bypassing the EGR cooler 14, a bypass valve 17 adjusting bypass rate which is ratio of exhaust gas bypassing the EGR cooler 14 to exhaust gas recirculated to the intake system, and a bypass rate control means 18 determining a zone where improvement of fuel economy due to rise of lubricating oil temperature To of an engine 1 is expected based on cooling water temperature Tw of the engine 1 and controlling bypass rate to obtain fuel economy improvement effect based on determination result. COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决问题的方案:提供能够通过实现EGR气体和润滑油之间的有效热交换来提高燃料经济性的排气再循环装置。 解决方案:本发明的排气再循环装置设置有EGR管13,其将废气再循环到发动机1的进气系统,设置在EGR管13上的EGR冷却器14,并且通过EGR管13中的废气冷却EGR管13中的排气 使用发动机1的润滑油作为冷却剂,旁通EGR冷却器14的旁通通路16,旁路阀17调节作为旁路EGR冷却器14的废气与再循环到进气系统的排气的比率的旁通率,以及旁路 速度控制装置18,根据发动机1的冷却水温度Tw,根据判定结果,控制旁路速度,确定由于发动机1的润滑油温度To的上升引起的燃料经济性提高的区域,得到燃料经济性改善效果 。 版权所有(C)2006,JPO&NCIPI
    • 28. 发明专利
    • Exhaust emission control device for internal combustion engine
    • 用于内燃机的排气排放控制装置
    • JP2005113801A
    • 2005-04-28
    • JP2003349739
    • 2003-10-08
    • Toyota Motor Corpトヨタ自動車株式会社
    • NAKATANI KOICHIRO
    • F02D45/00B01D53/86F01N3/20F01N3/24F02D41/04
    • Y02T10/47
    • PROBLEM TO BE SOLVED: To properly set regeneration time for an NOx storage catalyst in relation to an exhaust emission control device for an internal combustion engine. SOLUTION: A reforming catalyst 13 is disposed in an engine exhaust passage, and downstream of the reforming catalyst 13, the NOx storage catalyst 15 is disposed to store NOx when an air-fuel ratio is lean, and emit stored NOx when the air-fuel ratio is rich. Relation between necessary regeneration time for regenerating the NOx storage catalyst 15 and exhaust gas quantity is preliminarily determined. An SOx emission process from the NOx storage catalyst 15 is executed through a regeneration period determined based on the relation. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了适当地设定与用于内燃机的废气排放控制装置相关的NOx储存催化剂的再生时间。 解决方案:重整催化剂13设置在发动机排气通道中,并且在重整催化剂13的下游,设置NOx储存催化剂15以在空燃比稀薄时储存NOx,并且当 空燃比丰富。 预先确定NOx再生催化剂15的再生时间和废气量之间的关系。 通过基于该关系确定的再生时间执行来自NOx存储催化剂15的SO x排放处理。 版权所有(C)2005,JPO&NCIPI