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公开(公告)号:US08336296B2
公开(公告)日:2012-12-25
申请号:US12742309
申请日:2008-11-11
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
IPC分类号: F01N3/00
CPC分类号: F02D41/0275 , B01D53/9409 , B01D53/9495 , B01D2251/208 , B01D2255/91 , B01D2257/302 , B01D2257/404 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/106 , F01N3/206 , F01N9/00 , F01N11/002 , F01N13/009 , F01N2550/05 , F01N2610/03 , F01N2610/1493 , F01N2900/0422 , F01N2900/08 , F01N2900/1602 , F02D41/025 , F02D41/028 , F02D41/405 , F02D2200/0802 , F02M26/05 , F02M26/15 , Y02T10/26 , Y02T10/47
摘要: An object of the present invention is to provide a technology that enables reduction of NOx stored in an NOx catalyst with improved efficiency in an exhaust gas purification system for an internal combustion engine. According to the present invention, when NOx stored in the NOx catalyst is to be reduced, if the temperature of the NOx catalyst is lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased only by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine, and if the temperature of the NOx catalyst is not lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased either only by adding reducing agent through reducing agent addition means, or by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine and adding reducing agent through the reducing agent addition means.
摘要翻译: 本发明的一个目的是提供一种能够在内燃机的排气净化系统中提高效率地减少存储在NOx催化剂中的NOx的技术。 根据本发明,当NOx吸收剂中存储的NOx降低时,如果NOx催化剂的温度低于特定温度,则NOx催化剂周围环境气氛的空燃比仅通过减少 从内燃机排出的废气的空燃比,如果NOx催化剂的温度不低于特定温度,则NOx催化剂周围的环境气氛的空燃比仅通过 通过还原剂添加装置添加还原剂,或者通过降低从内燃机排出的废气的空燃比,并通过还原剂添加装置添加还原剂。
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公开(公告)号:US20100263638A1
公开(公告)日:2010-10-21
申请号:US12678876
申请日:2008-10-31
申请人: Tomoyuki Kogo , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
发明人: Tomoyuki Kogo , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
IPC分类号: F02B33/00
CPC分类号: F02B37/24 , F02B37/004 , F02B37/007 , F02B37/18 , F02D13/02 , F02D23/02 , F02D41/0007 , F02D2041/001 , F02D2200/0408 , Y02T10/144 , Y02T10/18
摘要: An internal combustion engine control apparatus that prevents an abrupt change in the air amount at the time of supercharger switching. The control apparatus enters a small turbo operating state in which a small turbocharger is mainly operative, during relatively low-rotation-speed and low-load side, and enters a large turbo operating state in which a large turbocharger is mainly operative, in a relatively high-rotation-speed and high-load. In the small turbo operating state, the control apparatus can exercise charging efficiency enhancement control by using a scavenging effect. Before switching from the small turbo operating state to the large turbo operating state, the control apparatus predicts whether the large turbocharger will build up its boost pressure quickly or slowly. When slow boost pressure is predicted, the control apparatus exercises charging efficiency enhancement control to provide a low degree of charging efficiency enhancement.
摘要翻译: 一种防止在增压器切换时的空气量突然变化的内燃机控制装置。 控制装置进入小型涡轮增压器主要在较低转速和低负载侧运转的小型涡轮增压器运行状态,并进入较大的涡轮增压器运行状态,大型涡轮增压器主要运行, 高转速和高负载。 在小涡轮操作状态下,控制装置可以通过使用清扫效果来进行充电效率提高控制。 在从小涡轮操作状态切换到大涡轮操作状态之前,控制装置预测大型涡轮增压器是否将快速或缓慢地增加其增压压力。 当预测到缓慢的增压压力时,控制装置进行充电效率提高控制,以提供低充电效率的提高。
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公开(公告)号:US08220263B2
公开(公告)日:2012-07-17
申请号:US12682838
申请日:2008-11-10
申请人: Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Tomoyuki Kogo , Katsuhiro Ito
发明人: Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Tomoyuki Kogo , Katsuhiro Ito
CPC分类号: F02D41/0007 , F02B25/145 , F02B29/0406 , F02D13/0219 , F02D13/0261 , F02D15/04 , F02D23/00 , F02D41/10 , F02D2041/001 , F02M26/05 , F02M26/10 , F02M26/23 , Y02T10/12 , Y02T10/144 , Y02T10/18
摘要: A control apparatus for an internal combustion engine, which can generate exhaust pressure pulsation at an early period while suppressing the degradation of volumetric efficiency, when a request to enhance the exhaust pressure pulsation is made in the internal combustion engine which includes a variable valve mechanism that makes variable a valve overlap period, and a variable nozzle type turbocharger.
摘要翻译: 一种用于内燃机的控制装置,当在包括可变气门机构的内燃机中进行增加排气压力脉动的请求时,能够在抑制体积效率的降低的同时,在早期产生排气压力脉动, 使阀重叠周期变化,以及可变喷嘴型涡轮增压器。
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公开(公告)号:US20100251697A1
公开(公告)日:2010-10-07
申请号:US12742309
申请日:2008-11-11
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
CPC分类号: F02D41/0275 , B01D53/9409 , B01D53/9495 , B01D2251/208 , B01D2255/91 , B01D2257/302 , B01D2257/404 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/106 , F01N3/206 , F01N9/00 , F01N11/002 , F01N13/009 , F01N2550/05 , F01N2610/03 , F01N2610/1493 , F01N2900/0422 , F01N2900/08 , F01N2900/1602 , F02D41/025 , F02D41/028 , F02D41/405 , F02D2200/0802 , F02M26/05 , F02M26/15 , Y02T10/26 , Y02T10/47
摘要: An object of the present invention is to provide a technology that enables reduction of NOx stored in an NOx catalyst with improved efficiency in an exhaust gas purification system for an internal combustion engine. According to the present invention, when NOx stored in the NOx catalyst is to be reduced, if the temperature of the NOx catalyst is lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased only by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine, and if the temperature of the NOx catalyst is not lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased either only by adding reducing agent through reducing agent addition means, or by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine and adding reducing agent through the reducing agent addition means.
摘要翻译: 本发明的一个目的是提供一种能够在内燃机的排气净化系统中提高效率地减少存储在NOx催化剂中的NOx的技术。 根据本发明,当NOx吸收剂中存储的NOx降低时,如果NOx催化剂的温度低于特定温度,则NOx催化剂周围环境气氛的空燃比仅通过减少 从内燃机排出的废气的空燃比,如果NOx催化剂的温度不低于特定温度,则NOx催化剂周围的环境气氛的空燃比仅通过 通过还原剂添加装置添加还原剂,或者通过降低从内燃机排出的废气的空燃比,并通过还原剂添加装置添加还原剂。
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公开(公告)号:US20100242471A1
公开(公告)日:2010-09-30
申请号:US12682838
申请日:2008-11-10
申请人: Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Tomoyuki Kogo , Katsuhiro Ito
发明人: Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Tomoyuki Kogo , Katsuhiro Ito
CPC分类号: F02D41/0007 , F02B25/145 , F02B29/0406 , F02D13/0219 , F02D13/0261 , F02D15/04 , F02D23/00 , F02D41/10 , F02D2041/001 , F02M26/05 , F02M26/10 , F02M26/23 , Y02T10/12 , Y02T10/144 , Y02T10/18
摘要: A control apparatus for an internal combustion engine, which can generate exhaust pressure pulsation at an early period while suppressing the degradation of volumetric efficiency, when a request to enhance the exhaust pressure pulsation is made in the internal combustion engine which includes a variable valve mechanism that makes variable a valve overlap period, and a variable nozzle type turbocharger.
摘要翻译: 一种用于内燃机的控制装置,当在包括可变气门机构的内燃机中进行增加排气压力脉动的请求时,能够在抑制体积效率的降低的同时,在早期产生排气压力脉动, 使阀重叠周期变化,以及可变喷嘴型涡轮增压器。
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公开(公告)号:US08418446B2
公开(公告)日:2013-04-16
申请号:US12740250
申请日:2008-11-11
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito
CPC分类号: F02D41/0055 , B01D2255/91 , B01D2258/012 , F01N3/0814 , F01N3/0842 , F01N3/106 , F01N13/009 , F02D41/0052 , F02D41/0275 , F02D2200/0802 , F02D2250/38 , Y02T10/47
摘要: Disclosed is a technology that enables better reduction of NOx stored in an NOx catalyst in an exhaust gas purification system for an internal combustion engine. When NOx stored in an NOx catalyst is to be reduced, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to a target air-fuel ratio by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine. In doing so, if the temperature of the NOx catalyst is not lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while bringing the combustion state into low temperature combustion. On the other hand, if the temperature of the NOx catalyst is lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while decreasing the quantity of EGR gas in a cylinder so that the amount of generated smoke is kept within an allowable range.
摘要翻译: 公开了一种能够更好地还原内燃机的排气净化系统中的NOx催化剂中存储的NOx的技术。 当减少NOx吸收剂中存储的NOx时,通过降低从内燃部排出的废气的空燃比,将NOx催化剂周围的环境气体的空燃比降低到目标空燃比 发动机。 在这样做时,如果NOx催化剂的温度不低于特定温度,则NOx催化剂周围环境气氛的空燃比降低到目标空燃比,同时使燃烧状态进入低温燃烧 。 另一方面,如果NOx催化剂的温度低于特定温度,则NOx催化剂周围环境气氛的空燃比降低到目标空燃比,同时减少EGR气体的量 使得产生的烟雾量保持在容许范围内。
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公开(公告)号:US08201406B2
公开(公告)日:2012-06-19
申请号:US12678876
申请日:2008-10-31
申请人: Tomoyuki Kogo , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
发明人: Tomoyuki Kogo , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Koichiro Nakatani , Katsuhiro Ito , Masayoshi Nakagawa , Yoshihiro Hisataka
CPC分类号: F02B37/24 , F02B37/004 , F02B37/007 , F02B37/18 , F02D13/02 , F02D23/02 , F02D41/0007 , F02D2041/001 , F02D2200/0408 , Y02T10/144 , Y02T10/18
摘要: An internal combustion engine control apparatus that prevents an abrupt change in the air amount at the time of supercharger switching. The control apparatus enters a small turbo operating state in which a small turbocharger is mainly operative, during relatively low-rotation-speed and low-load side, and enters a large turbo operating state in which a large turbocharger is mainly operative, in a relatively high-rotation-speed and high-load. In the small turbo operating state, the control apparatus can exercise charging efficiency enhancement control by using a scavenging effect. Before switching from the small turbo operating state to the large turbo operating state, the control apparatus predicts whether the large turbocharger will build up its boost pressure quickly or slowly. When slow boost pressure is predicted, the control apparatus exercises charging efficiency enhancement control to provide a low degree of charging efficiency enhancement.
摘要翻译: 一种防止在增压器切换时的空气量突然变化的内燃机控制装置。 控制装置进入小型涡轮增压器主要在较低转速和低负载侧运转的小型涡轮增压器运行状态,并进入较大的涡轮增压器运行状态,大型涡轮增压器主要运行, 高转速和高负载。 在小涡轮操作状态下,控制装置可以通过使用清扫效果来进行充电效率提高控制。 在从小涡轮操作状态切换到大涡轮操作状态之前,控制装置预测大型涡轮增压器是否将快速或缓慢地增加其增压压力。 当预测到缓慢的增压压力时,控制装置进行充电效率提高控制,以提供低充电效率的提高。
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公开(公告)号:US20100229536A1
公开(公告)日:2010-09-16
申请号:US12740250
申请日:2008-11-11
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Katsuhiro Ito
CPC分类号: F02D41/0055 , B01D2255/91 , B01D2258/012 , F01N3/0814 , F01N3/0842 , F01N3/106 , F01N13/009 , F02D41/0052 , F02D41/0275 , F02D2200/0802 , F02D2250/38 , Y02T10/47
摘要: Disclosed is a technology that enables better reduction of NOx stored in an NOx catalyst in an exhaust gas purification system for an internal combustion engine. When NOx stored in an NOx catalyst is to be reduced, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to a target air-fuel ratio by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine. In doing so, if the temperature of the NOx catalyst is not lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while bringing the combustion state into low temperature combustion. On the other hand, if the temperature of the NOx catalyst is lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while decreasing the quantity of EGR gas in a cylinder so that the amount of generated smoke is kept within an allowable range.
摘要翻译: 公开了一种能够更好地还原内燃机的排气净化系统中的NOx催化剂中存储的NOx的技术。 当减少NOx吸收剂中存储的NOx时,通过降低从内燃部排出的废气的空燃比,将NOx催化剂周围的环境气体的空燃比降低到目标空燃比 发动机。 在这样做时,如果NOx催化剂的温度不低于特定温度,则NOx催化剂周围环境气氛的空燃比降低到目标空燃比,同时使燃烧状态进入低温燃烧 。 另一方面,如果NOx催化剂的温度低于特定温度,则NOx催化剂周围环境气氛的空燃比降低到目标空燃比,同时减少EGR气体的量 使得产生的烟雾量保持在容许范围内。
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公开(公告)号:US08315777B2
公开(公告)日:2012-11-20
申请号:US12668743
申请日:2008-08-06
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Yoshihiro Hisataka
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Yoshihiro Hisataka
IPC分类号: B60T7/12
CPC分类号: F02D13/0203 , F02D13/0207 , F02D13/0265 , Y02T10/18
摘要: A control apparatus for an internal combustion engine (10) includes intake valve control means (50). The internal combustion engine (10) includes a variable intake valve operating mechanism (66) that changes a valve opening characteristic of an intake valve (64), and rich combustion is performed in the internal combustion engine (10) to control an exhaust gas purification catalyst (24) disposed in an exhaust passage (18). The intake valve control means (50) controls the valve opening characteristic of the intake valve (64) to increase a flow rate of intake air in an early stage of an intake stroke when the rich combustion is performed, as compared to when non-rich combustion is performed.
摘要翻译: 一种用于内燃机(10)的控制装置,包括进气阀控制装置(50)。 内燃机(10)包括改变进气门(64)的开阀特性的可变进气门操作机构(66),并且在内燃机(10)中进行丰富燃烧以控制排气净化 设置在排气通道(18)中的催化剂(24)。 当进行浓燃烧时,进气阀控制装置(50)控制进气门(64)的开阀特性,以增加进气冲程早期进气的流量,与不富 进行燃烧。
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公开(公告)号:US20100204903A1
公开(公告)日:2010-08-12
申请号:US12668743
申请日:2008-08-06
申请人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Yoshihiro Hisataka
发明人: Koichiro Nakatani , Terutoshi Tomoda , Shinobu Ishiyama , Tomoyuki Ono , Tomoyuki Kogo , Yoshihiro Hisataka
CPC分类号: F02D13/0203 , F02D13/0207 , F02D13/0265 , Y02T10/18
摘要: A control apparatus for an internal combustion engine (10) includes intake valve control means (50). The internal combustion engine (10) includes a variable intake valve operating mechanism (66) that changes a valve opening characteristic of an intake valve (64), and rich combustion is performed in the internal combustion engine (10) to control an exhaust gas purification catalyst (24) disposed in an exhaust passage (18). The intake valve control means (50) controls the valve opening characteristic of the intake valve (64) to increase a flow rate of intake air in an early stage of an intake stroke when the rich combustion is performed, as compared to when non-rich combustion is performed.
摘要翻译: 一种用于内燃机(10)的控制装置,包括进气阀控制装置(50)。 内燃机(10)包括改变进气门(64)的开阀特性的可变进气门操作机构(66),并且在内燃机(10)中进行丰富燃烧以控制排气净化 设置在排气通道(18)中的催化剂(24)。 当进行浓燃烧时,进气阀控制装置(50)控制进气门(64)的开阀特性,以增加进气冲程早期进气的流量,与不富 进行燃烧。
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