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公开(公告)号：US08108129B2
公开(公告)日：2012-01-31
申请号：US12445558
申请日：2008-05-20
Applicant: Shigeki Nakayama , Tomomi Onishi , Akio Matsunaga
Inventor： Shigeki Nakayama , Tomomi Onishi , Akio Matsunaga
CPC classification number: F02D41/144 , F02B37/127 , F02D41/0007 , F02D41/0072 , F02M26/05 , F02M26/06 , F02M26/22 , F02M26/45 , Y02T10/144 , Y02T10/47
Abstract: A technique is provided which, in an exhaust gas recirculation apparatus for an internal combustion engine, can calculate a low-pressure EGR rate and a high-pressure EGR rate in an accurate manner, and control the flow rates of both a low pressure EGR passage and a high pressure EGR passage in a closed-loop control manner, thereby to make the temperature of intake air and a supercharging pressure stable and to suppress the deterioration of exhaust emissions as well as the deterioration of power performance. The low pressure EGR rate, representative of the proportion of an amount of low pressure EGR gas to an amount of intake air sucked into the internal combustion engine, and the high pressure EGR rate, representative of the proportion of an amount of high pressure EGR gas to the amount of intake air, are calculated by using a CO2 concentration in an intake passage at a location downstream of a connection portion of the low pressure EGR passage and upstream of a connection portion of the high pressure EGR passage, a CO2 concentration in the intake passage at a location downstream the connection portion of the high pressure EGR passage, and a CO2 concentration of an exhaust gas discharged from the internal combustion engine (S103). The low pressure EGR rate and the high pressure EGR rate to be calculated are controlled to individual target values, respectively (S104).
Abstract translation: 提供了一种在内燃机的排气再循环装置中能够以精确的方式计算低压EGR率和高压EGR率的技术，并且控制低压EGR通路 和高压EGR通路，从而使进气温度和增压压力稳定，并且抑制废气排放的劣化以及功率性能的劣化。 代表低压EGR气体的量与吸入内燃机的进气量的比例的低压EGR率和表示高压EGR气体的比例的高压EGR率 通过在低压EGR通路的连接部分的下游位置和高压EGR通路的连接部分的上游的位置处的进气通道中使用CO 2浓度来计算进气量， 在高压EGR通路的连接部分下游的位置和从内燃机排出的废气的CO 2浓度的进气通道（S103）。 将要计算的低压EGR率和高压EGR率分别控制到各个目标值（S104）。
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公开(公告)号：US20110005491A1
公开(公告)日：2011-01-13
申请号：US12812585
申请日：2008-12-04
Applicant: Yasuyuki Terada , Mitsuhiro Nada , Akio Matsunaga , Makio Tsuchiyama
Inventor： Yasuyuki Terada , Mitsuhiro Nada , Akio Matsunaga , Makio Tsuchiyama
IPC: F02B3/00
CPC classification number: F02D41/403 , F02D35/023 , F02D35/026 , F02D41/047 , F02D41/402 , F02D2041/0015 , F02D2200/0414 , Y02T10/44
Abstract: In one embodiment, a total pilot injection amount is calculated from the difference between a compressed gas temperature in a cylinder and a fuel self-ignition temperature. As pilot injection, a plurality of instances of divided pilot injection are performed, and by setting the injection amount per one instance of divided pilot injection to an injector minimum limit injection amount, each divided pilot injection amount is suppressed, and the penetration of fuel is suppressed to a low level so that attachment of fuel to a wall face is avoided, and also, fuel is caused to accumulate in the center portion of the cylinder.
Abstract translation: 在一个实施例中，根据气缸中的压缩气体温度与燃料自燃温度之间的差计算总引燃喷射量。 作为先导喷射，进行分割先导喷射的多个实例，并且通过将分割的先导喷射的每一个实例的喷射量设定为喷射器最小限度喷射量，抑制每个分配的引导喷射量，并且燃料的穿透为 被抑制到低水平，从而避免燃料附着到壁面，并且燃料也积聚在气缸的中心部分。
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公开(公告)号：US08387586B2
公开(公告)日：2013-03-05
申请号：US12746404
申请日：2008-10-31
Applicant: Akio Matsunaga , Mitsuhiro Nada , Yasuyuki Terada , Makio Tsuchiyama
Inventor： Akio Matsunaga , Mitsuhiro Nada , Yasuyuki Terada , Makio Tsuchiyama
IPC: F02B17/00
CPC classification number: F02D41/403 , F02D35/025 , F02D35/026 , Y02T10/44
Abstract: In one embodiment, a determination is made of whether or not in a condition in which a compressed gas temperature will reach a fuel self-ignition temperature by only a compression operation in the compression stroke, and in a case where the compressed gas temperature will reach the fuel self-ignition temperature, pilot injection is judged to be unnecessary, so this pilot injection is prohibited.
Abstract translation: 在一个实施例中，通过仅压缩行程中的压缩操作和压缩气体温度将达到的情况确定压缩气体温度是否达到燃料自燃温度的条件 燃料自燃温度，先导喷射被认为是不必要的，因此禁止该引燃喷射。
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公开(公告)号：US20100312454A1
公开(公告)日：2010-12-09
申请号：US12746426
申请日：2008-10-31
Applicant: Mitsuhiro Nada , Akio Matsunaga , Yasuyuki Terada , Makio Tsuchiyama
Inventor： Mitsuhiro Nada , Akio Matsunaga , Yasuyuki Terada , Makio Tsuchiyama
CPC classification number: F02D41/403 , F02D2250/18 , F02D2250/36 , Y02T10/44
Abstract: In one embodiment, a total fuel injection amount is calculated from a torque required by an engine. A division ratio of a pre-injection amount that achieves both suppression of ignition delay of fuel from a main injection and suppression of a peak value of a heat production ratio of combustion from the main injection is calculated. Upper and lower limit guards are given to the obtained divided amount, and the divided injection amount is calculated. The injection amount of the main injection is obtained by subtracting the divided injection amount from the total fuel injection amount.
Abstract translation: 在一个实施例中，根据发动机所需的扭矩计算总燃料喷射量。 计算实现抑制来自主喷射的燃料点火延迟的预喷射量的分压比，以及抑制来自主喷射的燃烧热产生率的峰值。 上限和下限值被赋予所获得的分割量，并且计算分割的喷射量。 通过从总燃料喷射量减去分割喷射量来获得主喷射的喷射量。
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公开(公告)号：US20100305833A1
公开(公告)日：2010-12-02
申请号：US12746404
申请日：2008-10-31
Applicant: Akio Matsunaga , Mitsuhiro Nada , Yasuyuki Terada , Makio Tsuchiyama
Inventor： Akio Matsunaga , Mitsuhiro Nada , Yasuyuki Terada , Makio Tsuchiyama
IPC: F02D41/40
CPC classification number: F02D41/403 , F02D35/025 , F02D35/026 , Y02T10/44
Abstract: In one embodiment, a determination is made of whether or not in a condition in which a compressed gas temperature will reach a fuel self-ignition temperature by only a compression operation in the compression stroke, and in a case where the compressed gas temperature will reach the fuel self-ignition temperature, pilot injection is judged to be unnecessary, so this pilot injection is prohibited.
Abstract translation: 在一个实施例中，通过仅压缩行程中的压缩操作和压缩气体温度将达到的情况确定压缩气体温度是否达到燃料自燃温度的条件 燃料自燃温度，先导喷射被认为是不必要的，因此禁止该引燃喷射。
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Patent Agency Ranking
公开(公告)号：US07620490B2
公开(公告)日：2009-11-17
申请号：US11885998
申请日：2006-03-08
Applicant: Akio Matsunaga
Inventor： Akio Matsunaga
CPC classification number: F02D41/144 , F02D41/0065 , F02D41/1456 , F02D2250/38 , F02M26/05 , F02M26/10 , F02M26/23 , F02M26/46 , F02M26/48
Abstract: The invention provides a fuel injection control device for an internal combustion engine that can improve the accuracy of combustion control regarding smoke suppression. The fuel injection control device is applied to an engine provided with an EGR device for returning, as a part of an intake gas flown into the cylinder, an EGR gas, withdrawn from an exhaust passage, to an air intake passage. The amount of oxygen OXM contained in the intake gas and the concentration of oxygen OXC contained in the intake gas are detected (steps S1 and S2). The smoke tolerable limit value QOXMLMT as the upper limit of the amount of fuel injection, which can suppress the amount of smoke generated in the engine to a predetermined tolerance range, is set based on the detected amount of oxygen and concentration of oxygen (step S4), and, when the required amount of injection QDMD determined based on operation conditions is larger than the tolerable limit value QOXMLMT, the instructional injection amount QFIN is limited to the tolerable limit value QOXMLMT.
Abstract translation: 本发明提供一种能够提高关于烟雾抑制的燃烧控制精度的内燃机的燃料喷射控制装置。 燃料喷射控制装置被应用于设置有EGR装置的发动机，用于将从排气通道排出的EGR气体作为进入气缸的进气的一部分返回到进气通道。 检测进气中含有的氧OXM量和进气中含有的氧OXC浓度（步骤S1，S2）。 基于检测到的氧浓度和氧浓度来设定烟气容许限制值QOXMLMT作为将发动机中产生的烟量抑制在规定的容许范围内的燃料喷射量的上限值（步骤S4 ），并且当基于操作条件确定的所需喷射量QDMD大于容许限制值QOXMLMT时，指示注入量QFIN被限制为可容许极限值QOXMLMT。
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公开(公告)号：US06877369B2
公开(公告)日：2005-04-12
申请号：US10695872
申请日：2003-10-30
Applicant: Akio Matsunaga , Hidenobu Nakamura
Inventor： Akio Matsunaga , Hidenobu Nakamura
CPC classification number: F02D41/0072 , F02D41/0007 , F02D41/145 , F02D2041/007 , F02D2200/0402 , F02D2200/0406 , F02D2200/0416 , F02M26/05 , Y02T10/47
Abstract: An EGR-gas flow rate estimation apparatus for an engine including an exhaust circulation pipe connected between an exhaust passage and an intake passage of the engine, and an EGR control valve interposed in the exhaust circulation pipe and having a throttle portion. The apparatus estimates a provisional EGR gas flow rate Gegr0 by use of a general formula Gegr0=Aegr·(2·Pex·ρa)1/2·Φ (Φ=(((κ/(κ−1)·((Pb/Pex)2/κ−(Pb/Pex)(1+1/κ)))1/2) where Pup represents the exhaust pressure, Pb represents the intake pressure, Aegr represents the effective opening area of the throttle portion, ρa represents the density of EGR gas, and κ represents the specific heat ratio of EGR gas. Subsequently, the apparatus estimates the flow rate Gegr of EGR gas flowing into the intake passage, by multiplying the provisional EGR gas flow rate Gegr0 by a correction value dPgain corresponding to differential pressure (Pex−Pb).
Abstract translation: 一种用于发动机的EGR气体流量估计装置，其包括连接在发动机的排气通道和进气通道之间的排气循环管，以及插入在排气循环管中并具有节流部的EGR控制阀。 该设备通过使用通式Gegr0 = Aegr。（2.Pex.rhoa）1/2（P i =（（（kappa /（kappa-1））（（（（kappa-1））估算出临时EGR气体流量Gegr0 Pb / Pex）<2 /κ（Pb / Pex）<（1 + 1 / kappa）>））1/2）其中，Pup表示排气压力，Pb表示进气压力，Aegr表示有效开度 节流部的面积，rhoa表示EGR气体的密度，κ表示EGR气体的比热，接着，通过将临时EGR气体流量乘以EGR估计流入进气通路的EGR气体的流量Gegr 通过对应于压差（Pex-Pb）的校正值dPgain对Gegr0进行速率。
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8.发明授权Exhaust gas recirculation control device for engine with dual cooling system 失效具有双冷却系统的发动机废气再循环控制装置
公开(公告)号：US5924412A
公开(公告)日：1999-07-20
申请号：US943179
申请日：1997-10-03
Applicant: Makoto Suzuki , Akio Matsunaga
Inventor： Makoto Suzuki , Akio Matsunaga
CPC classification number: F02D41/005 , F01P3/02 , F01P7/165 , F01P2003/021 , F01P2003/024 , F01P2023/08 , F02M2026/004 , F02M26/47 , Y02T10/47
Abstract: An engine is provided with a dual cooling system having a head-side cooling water passage formed in a cylinder head, through which a cooling water can be circulated, and a block-side cooling water passage formed in a cylinder block, through which a cooling water can be circulated, in which a block-side circulation can be stopped without stopping a head-side circulation. An exhaust gas recirculation control device for such engine comprises a temperature sensor for detecting a temperature of the cooling water circulating the head-side passage (THW); and an exhaust gas recirculation (EGR) system for supplying an EGR gas to the engine. The EGR system performs the supply of the EGR gas when the cooling water temperature (THW) is higher than a predetermined temperature (THE), and stops the supply of the EGR gas when the cooling water temperature (THW) is lower than the predetermined temperature (THE). The predetermined temperature when the block-side circulation is stopped (THL) is set to be different from the predetermined temperature when the block-side circulation is performed (THH).
Abstract translation: 发动机设置有双重冷却系统，其具有形成在气缸盖中的头侧冷却水通道，冷却水可以通过该冷却水循环;以及形成在气缸体中的块侧冷却水通道，通过该冷却水进行冷却 可以循环水，其中可以停止块体循环而不停止头侧循环。 用于这种发动机的排气再循环控制装置包括：温度传感器，用于检测循环头侧通道（THW）的冷却水的温度; 以及用于将EGR气体供给到发动机的排气再循环（EGR）系统。 当冷却水温度（THW）高于预定温度（TH）时，EGR系统执行EGR气体的供应，当冷却水温度（THW）低于预定温度（THW）时，EGR气体的供给停止 （THE）。 当块侧循环停止（THL）时的预定温度被设定为与执行块侧循环（THH）时的预定温度不同。
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公开(公告)号：US08479494B2
公开(公告)日：2013-07-09
申请号：US12808571
申请日：2009-03-12
Applicant: Hiroshi Enomoto , Akio Matsunaga
Inventor： Hiroshi Enomoto , Akio Matsunaga
IPC: F01N11/00
CPC classification number: F02D41/1494 , F02D41/1446 , F02D41/187 , F02D41/222 , F02D2200/0414 , F02D2200/0418
Abstract: In an exhaust gas sensor control system and control method, the exhaust pipe wall temperature is estimated based on the measured exhaust gas temperature measured, the exhaust gas flow rate, and the measured outside air temperature, with reference to a supplied heat quantity calculation map, wall temperature added value map, and a wall temperature subtracted value map. Then the dew-point of the exhaust pipe is calculated based on the air-fuel ratio of the air flow amount to the weight of fuel, and a condensed water added amount is calculated based on the relative wall temperature and the exhaust gas flow amount. The amount of condensed water is then estimated by summing the calculated condensed water added amounts.
Abstract translation: 在废气传感器控制系统和控制方法中，参照供给的热量计算图，基于测量的排气温度，废气流量和测量的外部空气温度来估计排气管壁温度， 壁温附加值图，壁温度相减值图。 然后，基于空气流量与燃料重量的空燃比计算出排气管的露点，并且基于相对壁温度和废气流量计算冷凝水添加量。 然后通过将计算的冷凝水添加量相加来估计冷凝水的量。
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10.发明授权公开(公告)号：US08453446B2
公开(公告)日：2013-06-04
申请号：US12522749
申请日：2008-01-23
Applicant: Tomomi Onishi , Akio Matsunaga , Shigeki Nakayama
Inventor： Tomomi Onishi , Akio Matsunaga , Shigeki Nakayama
CPC classification number: F02D41/0007 , F02B29/0406 , F02D9/04 , F02D41/0065 , F02D41/123 , F02D2041/0017 , F02M25/06 , F02M26/05 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , Y02T10/144 , Y02T10/47
Abstract: An exhaust gas control system for an internal combustion engine includes a turbocharger that includes a compressor arranged in an intake passage, and a turbine arranged in an exhaust passage; a low-pressure EGR unit that recirculates a portion of exhaust gas back to the internal combustion engine through a low-pressure EGR passage that provides communication between the exhaust passage, at a portion downstream of the turbine, and the intake passage, at a portion upstream of the compressor; a low-pressure EGR valve that is provided in the low-pressure EGR passage, and that changes the flow passage area of the low-pressure EGR passage; and a valve control unit that executes an opening/closing control over the low-pressure EGR valve. When it is determined that the internal combustion engine is under a predetermined low-temperature environment, the low-pressure EGR valve is kept closed while the internal combustion engine is in the fuel-supply cutoff operation mode.
Abstract translation: 一种用于内燃机的排气控制系统包括：涡轮增压器，包括布置在进气通道中的压缩机和布置在排气通道中的涡轮机; 低压EGR单元，其通过低压EGR通道将排气的一部分再循环回内燃机，所述低压EGR通道在涡轮机下游的部分和进气通道之间提供排气通道与进气通道之间的连通 压缩机上游; 低压EGR阀，其设置在低压EGR通路中，并且改变低压EGR通路的流路面积; 以及阀控制单元，其执行低压EGR阀的打开/关闭控制。 当确定内燃机处于预定的低温环境下时，在内燃机处于燃料供给切断操作模式的同时，低压EGR阀保持关闭。
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