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1. 发明专利

JP2006316708A Engine control device 审中-公开
标题翻译：发动机控制装置
公开(公告)号：JP2006316708A
公开(公告)日：2006-11-24
申请号：JP2005140559
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAOKA SHIRO , SUKEGAWA YOSHIHIRO , TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , IWAKI HIDEFUMI , ICHIHARA TAKANOBU
IPC分类号： F02D45/00 , F02D21/08 , F02D41/04 , F02D43/00 , F02M25/07
CPC分类号： F02D41/307 , F02D41/0007 , F02D41/0072 , F02D41/107 , F02D41/1456 , F02D41/18 , F02D41/222 , F02D41/3035 , F02D41/3076 , F02D2041/0075 , F02D2200/501 , F02D2200/602 , F02D2250/28 , F02M26/05 , F02M26/47 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To solve a problem in an engine having a premixed combustion mode that estimation accuracy of an EGR flow rate is deteriorated in transition and torque variations and emission deterioration are caused. SOLUTION: An engine control device has the premixed combustion mode and a diffusion combustion mode, has a sensor disposed in an EGR flow passage of the engine for detecting the EGR flow rate, and estimates the cylinder condition of the engine in the premixed combustion mode of the engine by using an output value of the sensor detecting the EGR flow rate. The EGR flow rate in transition can be accurately detected and this can be fed back highly responsively so that the torque variations and the emission deterioration can be prevented. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了解决在具有过渡期间EGR流量的估计精度劣化，转矩变动和排放恶化的预混燃烧模式的发动机中的问题。解决方案：发动机控制装置具有预混合燃烧模式和扩散燃烧模式，传感器设置在用于检测EGR流量的发动机的EGR流路中，并且在预混合中估计发动机的气缸状况通过使用检测EGR流量的传感器的输出值进行发动机的燃烧模式。可以精确地检测转换中的EGR流量，并且能够高度响应地反馈，从而可以防止扭矩变化和排放恶化。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005264771A Engine control system using air flow rate measuring device 审中-公开
标题翻译：使用空气流量测量装置的发动机控制系统
公开(公告)号：JP2005264771A
公开(公告)日：2005-09-29
申请号：JP2004075510
申请日：2004-03-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KADOHIRO TAKASHI , KAWASAKI TSUTOMU , ONIKAWA HIROSHI
IPC分类号： F02D45/00 , F02D21/08
摘要： PROBLEM TO BE SOLVED: To reduce the error of an air flow rate measuring device caused by the pulsation of an engine.
SOLUTION: In a system having an EGR system for returning exhaust gases to an intake system, the generated amounts of the pulsation of the engine and a reverse flow are largely changed by the return amount of EGR to the intake system. Since the effect of the pulsation of the engine on the air flow rate measuring device causes an approximately same error under specified conditions (engine rotational speed and EGR return amount), the error of the air flow rate measuring device by the pulsation of the engine can be corrected by a correction table using the rotational speed of the engine and the EGR amount to more accurately control the engine. Since the effect of the pulsation of the engine varied by the return amount of the EGR can be reduced, a highly accurate control can be performed in a diesel engine vehicle having particularly a very large return amount of EGR and having no throttle valve.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：减少由发动机的脉动引起的空气流量测量装置的误差。解决方案：在具有用于将废气返回到进气系统的EGR系统的系统中，所产生的发动机的脉动量和逆流的产生量大大地改变到进气系统的EGR返回量。由于发动机的脉动对空气流量测量装置的影响在规定条件（发动机转速和EGR返回量）下引起大致相同的误差，所以通过发动机的脉动使空气流量测量装置的误差可以通过使用发动机的转速和EGR量的校正表来校正，以更精确地控制发动机。由于可以减少发动机的脉动的影响，所以可以减少EGR的返回量，从而能够在具有非常大的回流量的EGR并且没有节流阀的柴油发动机车辆中进行高精度的控制。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2006317297A Method for diagnosing degradation of thermal flowmeter and output correction method 审中-公开
标题翻译：用于诊断热流量计和输出校正方法的方法
公开(公告)号：JP2006317297A
公开(公告)日：2006-11-24
申请号：JP2005140558
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , IWAKI HIDEFUMI , SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , ICHIHARA TAKANOBU
IPC分类号： G01F1/698 , F02M25/07 , G01F1/68
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To solve the problem that fouling and degradations simultaneously occur in a heating resistor etc. to cause a substantial degradation in accuracy in a short time since especially diesel exhaust gases contain a large amount of fouling components such as carbon and oil in the case of measuring the quantity of flow of exhaust gases. SOLUTION: A means for determining degradations of a flowmeter is provided for the inside of ECU or a flowmeter. Degradations of the flowmeter is determined by the degradation determination means before the engine is started or with an engine in a state of steady operation after it is started. Output of the flowmeter is corrected on the basis of determination results. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决问题：为了解决在加热电阻器等中同时发生的结垢和劣化的问题，在短时间内导致精度的显着劣化，特别是柴油废气中含有大量的污垢成分如碳在测量废气流量的情况下为油。
解决方案：为ECU或流量计内部提供了一种用于确定流量计劣化的装置。在发动机起动之前，由发动机起动之后的劣化判定装置，或者起动后的发动机处于稳定运行状态，来决定流量计的劣化。基于确定结果校正流量计的输出。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006316706A Exhaust gas recirculation device and control method of internal combustion engine 审中-公开
标题翻译：排气再循环装置及内燃机控制方法
公开(公告)号：JP2006316706A
公开(公告)日：2006-11-24
申请号：JP2005140553
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ICHIHARA TAKANOBU , KATOGI KOZO , SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , IWAKI HIDEFUMI , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , TOKUYASU NOBORU
IPC分类号： F02M25/07
CPC分类号： F02M26/47 , F02M26/05
摘要： PROBLEM TO BE SOLVED: To minimize an emission of NOx and soot in exhaust gas even when the operation state of an internal combustion engine is varied. SOLUTION: In an exhaust gas recirculation device equipped with an EGR valve and an exhaust oxygen concentration sensor, an EGR gas flow rate sensor comprised of a heating resistance is provided in the recirculation flow passage, an opening of the EGR valve is adjusted in accordance with a detected oxygen concentration of the exhaust oxygen concentration sensor in a predetermined operation state 1, and the opening of the EGR valve is adjusted in accordance with the detected gas flow rate of the EGR gas flow rate sensor in a predetermined operation state 2 wherein the exhaust oxygen concentration is higher as compared with the predetermined operation state 1. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使当内燃机的操作状态发生变化时，也能尽量减少废气中的NOx和烟尘的排放。解决方案：在配备有EGR阀和排气氧浓度传感器的废气再循环装置中，在再循环流路中设置由耐热性构成的EGR气体流量传感器，调整EGR阀的开度根据在规定的运转状态1下的排气氧浓度传感器的检测氧浓度，根据EGR气体流量传感器在规定的运转状态2的检测气体流量来调节EGR阀的开度其中排气氧浓度与预定操作状态1相比较高。（C）2007，JPO＆INPIT

5. 发明专利

JP2006257922A Internal combustion engine system 审中-公开
标题翻译：内燃机系统
公开(公告)号：JP2006257922A
公开(公告)日：2006-09-28
申请号：JP2005074236
申请日：2005-03-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWASAKI TSUTOMU , MORINO TAKESHI , IGARASHI SHINYA , KADOHIRO TAKASHI , KOBAYASHI CHIHIRO
IPC分类号： F02D45/00 , F02M25/07
CPC分类号： F02M26/05 , Y02T10/121
摘要： PROBLEM TO BE SOLVED: To provide a system capable of largely reducing exhaust gas, by further accurately measuring and estimating an overall oxygen quantity sucked in the most important cylinder, in an internal combustion engine, particularly, a diesel car. SOLUTION: This internal combustion engine system is the internal combustion engine having an exhaust gas circulating mechanism EGR, and corrects the system by using a correction table made by an engine speed and an EGR quantity being two parameters having large influence on generation of a backflow of an engine. Thus, the exhaust gas can be largely reduced by highly accurately detecting and estimating an overall oxygen quantity. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够大大减少废气的系统，通过进一步精确地测量和估计吸入最重要的气缸的整体氧气，在内燃机，特别是柴油车中。解决方案：该内燃机系统是具有废气循环机构EGR的内燃机，并且通过使用由发动机转速和EGR量产生的校正表来校正系统，该校正表是对产生发动机的回流。因此，通过高精度地检测和估计总的氧气量，可以大大减少废气。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2008051726A Air flow rate measuring apparatus with heating resistive element 有权
标题翻译：空气流量测量装置与加热电阻元件
公开(公告)号：JP2008051726A
公开(公告)日：2008-03-06
申请号：JP2006229993
申请日：2006-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWASAKI TSUTOMU , KADOHIRO TAKASHI , ONIKAWA HIROSHI
IPC分类号： G01F1/684 , F02D35/00
摘要： PROBLEM TO BE SOLVED: To prevent a characteristic from being degraded due to an attachment attached to a heating resistive element. SOLUTION: A terminal is provided so as to be separated from a terminal for measuring an air flow rate. The heating resistive element can be maintained at a high temperature only when the terminal is connected to a power supply. The attachment accumulated on the heating resistive element is burned and removed by maintaining it at the high temperature. As a result, since the attachment attached to the heating resistive element can be removed, a change in the characteristic of an air flow rate measuring apparatus with the heating resistive element is prevented, and an internal-combustion engine is controlled so as to accurately measure the quantity of inhaled air for a long time, and a replacement of a new component due to a degradation in the characteristic is eliminated. A vehicle is provided so as to reduce an emission of an exhaust gas harmful for a long time. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了防止由于附接到加热电阻元件的附件而导致的特性劣化。解决方案：提供端子，以便与用于测量空气流量的端子分离。只有当端子连接到电源时，加热电阻元件才能保持在高温。积聚在加热电阻元件上的附件通过将其保持在高温而被燃烧和去除。结果，由于可以除去附着在加热电阻元件上的附件，所以防止了具有加热电阻元件的空气流量测量装置的特性变化，并且内燃机被控制以便精确地测量消除了长时间的吸入空气量和由于特性劣化而导致的新成分的更换。提供车辆以便减少长时间有害的废气的排放。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2006316709A Detection device of egr gas flow rate and engine control method 有权
标题翻译： EGR气体流量和发动机控制方法的检测装置
公开(公告)号：JP2006316709A
公开(公告)日：2006-11-24
申请号：JP2005140560
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , IWAKI HIDEFUMI , ICHIHARA TAKANOBU
IPC分类号： F02M25/07 , F02D21/08 , F02D41/04 , F02D41/38 , F02D43/00
CPC分类号： F02M26/47 , F02M26/05
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of the detection accuracy of a flow sensor caused by dirt and breakage of the sensor due to overheat by a flow sensor provided upstream of a throttle and by providing a flow sensor between a junction of EGR gas and fresh air and an intake pipe collector. SOLUTION: A detection device of an EGR gas flow rate has the flow sensors 9, 10 provided upstream and downstream of the junction of fresh air and EGR gas and obtains EGR gas volume from a flow rate difference between the two sensors. An EGR rate for every cylinder is estimated from the time-series values of EGR gas volume, and injection timing, an injection quantity, a pilot injection ratio and an EGR gas mixing means for every cylinder are controlled based on the estimated rate. The accuracy deterioration and breakage of the flow sensors caused by dirt and overheat can be thus prevented. Discharge of NOx and soot from the engine can be inhibited. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止由于由设置在节气门上游的流量传感器过热而导致的由污垢和传感器损坏引起的流量传感器的检测精度的劣化，并且在EGR的接合点之间设置流量传感器气体和新鲜空气和进气管收集器。解决方案：EGR气体流量的检测装置具有设置在新鲜空气和EGR气体的接合处的上游和下游的流量传感器9,10，并且从两个传感器之间的流量差获得EGR气体体积。根据EGR气体体积的时间序列值估计每个气缸的EGR率，并且基于估计的速率来控制每个气缸的喷射正时，喷射量，先导喷射比和EGR气体混合装置。因此可以防止由污垢和过热引起的流量传感器的精度劣化和破裂。可以抑制来自发动机的NOx和烟尘的排放。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006316714A Diagnostic device for egr system 审中-公开
标题翻译：用于EGR系统的诊断装置
公开(公告)号：JP2006316714A
公开(公告)日：2006-11-24
申请号：JP2005140796
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IWAKI HIDEFUMI , ICHIHARA TAKANOBU , SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , TOKUYASU NOBORU , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI
IPC分类号： F02M25/07
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To perform diagnosis with high accuracy without being influenced by an engine operating condition and the condition of the upstream of an intake passage, in a diagnostic device equipped with a flow sensor for detecting an EGR flow rate in EGR piping, and detecting the failure of the EGR device including the piping by a correlation between a target EGR flow rate and the EGR flow rate detected by the flow sensor. SOLUTION: This device is equipped with the flow sensor for detecting the EGR flow rate, and detects the failure of the EGR device including the piping by the correlation between the target EGR flow rate and the EGR flow rate detected by the flow sensor. Diagnosed results are mutually monitored in association with control of an electrically controlled throttle and control of a PDF, and immediate control to each initial position is performed at the time of failure. The diagnostic flow of the EGR sensor is executed by an interruption processing or a processing in a main flow. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在具有用于检测EGR中的EGR流量的流量传感器的诊断装置中，以高精度执行诊断而不受发动机工作条件和进气通道上游的状况的影响并且通过目标EGR流量与由流量传感器检测到的EGR流量之间的相关性来检测包括管道的EGR装置的故障。解决方案：该装置配备有用于检测EGR流量的流量传感器，并且通过由流量传感器检测到的目标EGR流量与EGR流量之间的相关性来检测包括管道的EGR装置的故障，诊断结果与电控节流阀的控制和PDF的控制相关联地进行监控，并且在故障时执行对每个初始位置的立即控制。 EGR传感器的诊断流程通过中断处理或主流程中的处理来执行。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2006316707A Egr control device 审中-公开
标题翻译： EGR控制装置
公开(公告)号：JP2006316707A
公开(公告)日：2006-11-24
申请号：JP2005140555
申请日：2005-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATOGI KOZO , ICHIHARA TAKANOBU , SUKEGAWA YOSHIHIRO , YAMAOKA SHIRO , IWAKI HIDEFUMI , IGARASHI SHINYA , FUKATSU KATSUAKI , KADOHIRO TAKASHI , TOKUYASU NOBORU
IPC分类号： F02M25/07 , F02D45/00
CPC分类号： F02M26/47 , F02M26/05
摘要： PROBLEM TO BE SOLVED: To prevent breakage of an EGR flow sensor by controlling a signal of the EGR flow sensor according to the operation condition of an engine. SOLUTION: An EGR control device comprises the EGR flow sensor for measuring or estimating EGR gas volume of the engine and performs EGR flow control based on the signal output of the EGR flow sensor according to the operation condition after the elapse of a predetermined time from engine start or from the engine start. COPYRIGHT: (C)2007,JPO&INPIT

10. 发明专利

JP2008175150A Air flow rate measuring device 审中-公开
标题翻译：空气流量测量装置
公开(公告)号：JP2008175150A
公开(公告)日：2008-07-31
申请号：JP2007009694
申请日：2007-01-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIKI TAKAHIRO , IDE KIYOTOMO , KADOHIRO TAKASHI
IPC分类号： F02D35/00 , G01F1/68
摘要： PROBLEM TO BE SOLVED: To solve a problem on NOx reduction control, wherein change of air flow rate in an air flow rate measuring device part is physically delayed even when EGR gas flow rate changes since a supercharger, an intercooler, a duct and the like are installed between the air flow rate measuring device and an EGR return position in a today's installation position upstream of the supercharger.
SOLUTION: In an internal combustion engine having the supercharger, installation of the air flow rate measuring device at a position as close to the EGR gas return part as possible, is enabled by installing the same on a downstream side of the supercharger. Reduction effect of exhaust gas, mainly NOx especially in a transient condition is thereby exhibited since change of flow rate of EGR gas is accurately measured one by one.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：为了解决NOx增加控制的问题，其中即使在EGR增压器，中间冷却器，管道等的EGR气体流量变化时，空气流量测量装置部分的空气流量的变化也被物理地延迟等安装在空气流量测量装置和增压器上游的当今安装位置的EGR返回位置之间。解决方案：在具有增压器的内燃机中，通过将其安装在增压器的下游侧，能够将空气流量测量装置安装在尽可能靠近EGR气体返回部件的位置。因此，由于EGR气体的流量的变化被逐个精确地测量，所以表现出排气的主要是NOx，尤其是在瞬态状态下的排气效果。版权所有（C）2008，JPO＆INPIT

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