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1. 发明专利

JP4867713B2 Control device of Egr equipment with internal combustion engine 有权
公开(公告)号：JP4867713B2
公开(公告)日：2012-02-01
申请号：JP2007047768
申请日：2007-02-27
申请人：トヨタ自動車株式会社
发明人：久大木 , 靖司小倉 , 崇小山 , 貴文山田 , 肇清水 , 清藤原 , 智洋金子 , 正浩長江
IPC分类号： F02D21/08 , F02D13/02 , F02D23/00 , F02M25/07
CPC分类号： Y02T10/121 , Y02T10/144 , Y02T10/18
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of preventing EGR gas from being excessively supplied to the internal combustion engine due to recirculation delay of low pressure EGR gas, thereby preventing misfire of the internal combustion engine while suppressing an increase in emission of unburned HC, in a control device for an internal combustion engine including a high pressure EGR system and a low pressure EGR system. SOLUTION: When the operating condition of the internal combustion engine 1 shifts from a region LPL or a region MIX to a region HPL, during a recirculation delay period Δtd in which the recirculation delay of the low pressure EGR gas occurs, a valve closing timing of an exhaust valve is delayed at ΔVTe as compared with a normal operating condition so as to increase an amount GI of internal EGR gas and a high pressure EGR gas amount GH is maintained at a recirculation delay period high pressure side target value GHtd that is lower than a high pressure side target value GHt in the region HPL (S106 to S109). COPYRIGHT: (C)2008,JPO&INPIT

2. 发明专利

JP4779927B2 Exhaust gas recirculation system for an internal combustion engine 有权
公开(公告)号：JP4779927B2
公开(公告)日：2011-09-28
申请号：JP2006292005
申请日：2006-10-27
申请人：トヨタ自動車株式会社
发明人：照彦三宅 , 茂樹中山 , 知美大西 , 智幸小野 , 晃山下 , 宏樹村田 , 功松本 , 肇清水 , 宏行芳賀 , 正浩長江
IPC分类号： F02M25/07 , F02D21/08 , F02D23/00
CPC分类号： Y02T10/121 , Y02T10/144
摘要： PROBLEM TO BE SOLVED: To provide a technology that makes it possible to achieve more reliable EGR rate control response in an exhaust gas recirculation system for an internal combustion engine in which a high pressure EGR device and a low pressure EGR device are used in combination. SOLUTION: The exhaust gas recirculation system includes the high pressure EGR means for recirculating exhaust gas through a high pressure EGR passage connecting an exhaust passage upstream of a turbine of a turbocharger and an intake passage downstream of a compressor, the low pressure EGR means for recirculating exhaust gas through a low pressure EGR passage connecting the exhaust passage downstream of the turbine and the intake passage upstream of the compressor, a high pressure EGR valve arranged in the high pressure EGR passage and a low pressure EGR valve arranged in the low pressure EGR passage. In an EGR mode in which the low pressure EGR means and the high pressure EGR means are used in combination, essentially, feedback control of the degree of opening of the high pressure EGR valve is executed and open-loop control of the degree of opening of the low pressure EGR valve is executed. When the high pressure EGR valve opening degree reaches a predetermined operating threshold, temporary feedback control of the low pressure EGR valve opening degree is executed. COPYRIGHT: (C)2008,JPO&INPIT

3. 发明专利

JP4775282B2 Exhaust control device for an internal combustion engine 有权
公开(公告)号：JP4775282B2
公开(公告)日：2011-09-21
申请号：JP2007043318
申请日：2007-02-23
申请人：トヨタ自動車株式会社
发明人：久大木 , 崇小山 , 貴文山田 , 剛橋詰 , 貴之細木 , 清藤原 , 智洋金子 , 正浩長江
IPC分类号： F01N3/36 , F01N3/24 , F02M25/07
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To suppress variation in combustion caused by fuel addition while ensuring accuracy of fuel addition when providing an exhaust gas recirculation device for recirculating exhaust gas from downstream of a fuel adding valve arranged in an exhaust emission passage. SOLUTION: A diesel particulate filter and a NOx occlusion reducing catalyst are arranged on the exhaust emission passage, and the fuel adding valve is arranged upstream of an exhaust emission control device. The fuel adding valve adds fuel into the exhaust emission passage for regenerating a catalyst. The exhaust emission control system is provided with a high-pressure loop exhaust gas recirculation device for recirculating the exhaust gas from upstream of the exhaust emission control device to an intake side and a low-pressure loop exhaust gas recirculation device for recirculating the exhaust gas from downstream of the exhaust emission control device to the intake side. When fuel is added for regenerating the catalyst, an addition control means determines for every control intervals, the unit amount added which is the amount of fuel added in one fuel addition. The addition control means adds the minimum amount of fuel injected when the unit amount added is smaller than the minimum amount of injected by the fuel adding means, and also subtracts the excess amount of fuel when the minimum amount of fuel injected is added, from the amount of fuel added in the subsequent fuel addition. COPYRIGHT: (C)2008,JPO&INPIT

4. 发明专利

JP4720647B2 Exhaust gas recirculation system for an internal combustion engine 有权
公开(公告)号：JP4720647B2
公开(公告)日：2011-07-13
申请号：JP2006179769
申请日：2006-06-29
申请人：トヨタ自動車株式会社
发明人：正浩長江
IPC分类号： F02D21/08 , F01N3/20 , F01N3/24 , F02B37/00 , F02D23/00 , F02M25/07
CPC分类号： Y02T10/121 , Y02T10/144
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of completing warming up for an exhaust emission control catalyst for a shorter period of time. SOLUTION: This exhaust gas recirculation device is provided with an oxidation catalyst 12 arranged in an exhaust pipe 4 on the downstream side of the turbine of a turbocharger 5, an exhaust gas throttle valve 19 provided in an exhaust pipe 4 arranged further downstream from the oxidation catalyst 12, a low pressure EGR (exhaust gas recirculation) passage 31 connecting the exhaust pipe 4 arranged further downstream from the exhaust gas throttle valve 19 and an intake pipe 3 on the upstream side of the compressor of the turbocharger 5, a low pressure EGR valve 32 arranged in the low pressure EGR passage 31, catalyst temperature detection means (18, 20, S104) detecting the temperature of the oxidation catalyst 12, and catalyst warming up means (20, S105, S106, S107) comparing the detected temperature with a case that the detected temperature is not lower than a predetermined temperature when temperature detected by the catalyst temperature detection means is lower than the predetermined temperature, controlling the exhaust gas throttle valve 19 in a valve closing direction, and controlling the low pressure EGR valve 32 in a valve opening direction. COPYRIGHT: (C)2008,JPO&INPIT

5. 发明专利

JP4611941B2 Exhaust gas recirculation system for an internal combustion engine 有权
公开(公告)号：JP4611941B2
公开(公告)日：2011-01-12
申请号：JP2006179768
申请日：2006-06-29
申请人：トヨタ自動車株式会社
发明人：宏樹村田 , 肇清水 , 正浩長江
IPC分类号： F02D21/08 , F01N3/02 , F01N3/20 , F02D9/06 , F02D23/00 , F02M25/07
CPC分类号： F01N13/0097 , F01N3/0235 , F01N3/2006 , F02B3/06 , F02B29/0406 , F02B37/00 , F02D9/04 , F02D41/0007 , F02D41/0055 , F02D41/024 , F02D41/029 , F02D2041/0017 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/24 , F02M26/28 , F02M26/38 , Y02T10/144 , Y02T10/47
摘要： An exhaust gas recirculation device includes a turbocharger (5) having a turbine (5b) on an exhaust pipe (4) and a compressor (5a) on an intake pipe (3), a low-pressure EGR passage (31) connecting the exhaust pipe (4) downstream of the turbine (5b) and the intake pipe (3) upstream of the compressor (5a), and a filter (13) provided on the exhaust pipe (4) downstream of the turbine (5b). In the device, an exhaust throttle valve (19) is disposed on the exhaust pipe (4) that is downstream of the filter (13) and that is upstream of a site of connection with the low-pressure EGR passage (31).

6. 发明专利

JP4433685B2 Operation control method of compression ignition internal combustion engine 有权
公开(公告)号：JP4433685B2
公开(公告)日：2010-03-17
申请号：JP2003098458
申请日：2003-04-01
申请人：トヨタ自動車株式会社
发明人：寿記伊藤 , 雄介伯耆 , 崇志松本 , 清藤原 , 正浩長江 , 亮長谷川
IPC分类号： F02D19/08 , F02D43/00 , F02D21/08 , F02D41/02 , F02D41/04 , F02D41/06 , F02D41/10 , F02D41/12 , F02D41/22 , F02D41/40 , F02D45/00

7. 发明专利

JP4301295B2 egr system for an internal combustion engine 有权
公开(公告)号：JP4301295B2
公开(公告)日：2009-07-22
申请号：JP2007009272
申请日：2007-01-18
申请人：トヨタ自動車株式会社
发明人：茂樹中山 , 知美大西 , 宏樹村田 , 肇清水 , 正浩長江
IPC分类号： F02M25/07 , F02D21/08
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.

8. 发明专利

JP4285528B2 Exhaust gas recirculation system for an internal combustion engine 有权
公开(公告)号：JP4285528B2
公开(公告)日：2009-06-24
申请号：JP2006300295
申请日：2006-11-06
申请人：トヨタ自動車株式会社
发明人：照彦三宅 , 茂樹中山 , 知美大西 , 智幸小野 , 晃山下 , 宏樹村田 , 功松本 , 肇清水 , 宏行芳賀 , 正浩長江
IPC分类号： F02M25/07 , F02D21/08 , F02D23/00
CPC分类号： F02D41/0065 , F02B29/0406 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , F02M26/38 , Y02T10/47
摘要： An exhaust gas recirculation system includes a high-pressure EGR unit; a low-pressure EGR unit; a high-pressure EGR valve; a low-pressure EGR valve; and an EGR control unit that adjusts the opening amount of the high-pressure EGR valve to a required value for achieving the target EGR rate based on the characteristics of the exhaust gas in the low-pressure EGR passage before the operation mode is changed, and that maintains the required value during a period from when the operation mode is changed until when the low-pressure EGR gas is changed to the exhaust gas discharged from the internal combustion engine in the post-change operation mode.

9. 发明专利

JP4179290B2 The electric oil pump drive control device for a hybrid vehicle 有权
公开(公告)号：JP4179290B2
公开(公告)日：2008-11-12
申请号：JP2005039805
申请日：2005-02-16
申请人：トヨタ自動車株式会社
发明人：智幸小野 , 晃山下 , 元一村上 , 宏樹村田 , 功松本 , 佳宜橋本 , 寛真西岡 , 正浩長江 , 太郎青山
IPC分类号： B60W10/30 , B60K6/48 , B60K6/547 , B60L11/14 , B60R16/08 , B60W10/06 , B60W10/26 , B60W20/00 , F01M1/02 , F01M1/18 , F01M7/00 , F02D17/00 , F02D29/02 , F16H57/04 , F16H59/14 , F16H59/18 , F16H59/44 , F16H61/02 , F16H61/68 , F16H61/682
CPC分类号： F16H57/0434

10. 发明专利

JP4872644B2 Egr-equipped internal combustion engine 有权
公开(公告)号：JP4872644B2
公开(公告)日：2012-02-08
申请号：JP2006336700
申请日：2006-12-14
申请人：トヨタ自動車株式会社
发明人：久大木 , 靖司小倉 , 崇小山 , 貴文山田 , 肇清水 , 清藤原 , 智洋金子 , 正浩長江
IPC分类号： F02D13/02 , F02D21/08 , F02D23/00 , F02M25/07
CPC分类号： Y02T10/121 , Y02T10/144 , Y02T10/18
摘要： PROBLEM TO BE SOLVED: To provide a technology capable of restraining an excessive increase in NOx exhausted from an internal combustion engine, in a transition period when an operation state of the internal combustion engine is changed to a second operation state of increasing a low pressure EGR gas quantity more than a first operation state from the first operation state, in the internal combustion engine having a high pressure EGR device and a low pressure EGR device. SOLUTION: In an operation state transition period of changing the operation state of the internal combustion engine to the second operation state from the first operation state, an internal EGR gas quantity is increased by delaying the valve closing timing of an exhaust valve so that the exhaust valve is opened up to the middle of an intake stroke by an exhaust side VVT over a recirculation delay period Δtd causing a recirculation delay of low pressure EGR gas (S108, and S109). COPYRIGHT: (C)2008,JPO&INPIT

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