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公开(公告)号：EP2065587A2
公开(公告)日：2009-06-03
申请号：EP08020808.5
申请日：2008-12-01
CPC分类号： F02D41/0002 , F02D41/0072 , F02D41/18 , F02D41/222 , F02D41/3035 , F02D41/3076 , F02D2041/0075 , F02D2200/0406 , F02D2400/08 , F02M26/05 , F02M26/06 , F02M26/28 , F02M26/47 , Y02T10/42 , Y02T10/47
摘要： An engine that re-circulates its exhaust gas suffers decreased accuracy in estimating an EGR rate real-time especially while the operating state of the engine 19 is in a transitional state, which often results in torque fluctuations and deteriorated exhaust gas.
A sensor 12 for directly detecting an EGR flow rate is disposed in an EGR path 9. An EGR rate and in-cylinder oxygen concentration are calculated from the output value of that sensor 12. In addition, when this EGR rate calculation method is used, the calculation is properly switched between a steady operation state characterized by a low load and small rotational fluctuations and a transitional operating state including the acceleration and deceleration. This makes it possible to correctly estimate the EGR rate and the in-cylinder oxygen concentration under a wide range of engine operation conditions, and thereby to avoid the fluctuation of torque and the deterioration of exhaust gas.摘要翻译： 特别是在发动机19的运转状态处于过渡状态时，特别是在经常导致转矩波动和废气劣化的情况下，再次循环排气的发动机的EGR率实时估计的精度降低。 用于直接检测EGR流量的传感器12设置在EGR通路9中。根据该传感器12的输出值计算EGR率和缸内氧浓度。此外，当使用该EGR率计算方法时， 该计算在由低负载和小的旋转波动表征的稳定运行状态和包括加速和减速的过渡运行状态下适当地切换。 由此，能够在大范围的发动机运转条件下正确地估计EGR率和缸内氧浓度，能够避免转矩波动和排气恶化。
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3.发明公开Controller of internal combusion engine of compression ignition combustion type 有权用于与压缩点火的内燃发动机控制单元
公开(公告)号：EP1936168A2
公开(公告)日：2008-06-25
申请号：EP07021734.4
申请日：2007-11-08
申请人： Hitachi, Ltd.
发明人： Kakuya, Hiromu , Kumano, Kengo , Yamaoka, Shiro
CPC分类号： F02D41/3035 , F02B1/12 , F02B23/104 , F02B2075/125 , F02D13/0265 , F02D41/3064 , F02D41/3076 , F02D41/402 , F02D2041/001 , F02M26/01 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/44
摘要： The invention relates to a controller 20 of an internal combustion engine 100 capable of spark ignition combustion and compression ignition combustion which restrains the degradation of operation performance and exhaust performance at the time of combustion type switching. The controller 20 includes control means for performing combined combustion which leads to ignition combustion by a pressure rise by spark ignition combustion through adjustment of an internal cylinder 7 temperature and a combustion speed at the end of compression, wherein the combined combustion is performed in the process of combustion type switching between spark ignition combustion and compression ignition combustion based on a result of determination of whether or not combustion type switching is possible, thus implementing a smooth combustion type switching.
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4.发明公开
公开(公告)号：EP2058499A3
公开(公告)日：2014-08-06
申请号：EP08017962.5
申请日：2008-10-14
申请人： Hitachi Ltd.
发明人： Kakuya, Hiromu , Kumano, Kengo , Yamaoka, Shiro
IPC分类号： F02D41/40 , F02B1/12 , F02D41/00 , F02D13/02 , F02D43/00 , F02D37/02 , F02D41/30 , F02M25/07 , F02P5/15 , F02D35/02
CPC分类号： F02D41/307 , F02D13/0265 , F02D35/023 , F02D35/027 , F02D37/02 , F02D41/0002 , F02D41/006 , F02D41/3035 , F02D41/402 , F02D2041/001 , F02D2041/0015 , F02M26/01 , F02P5/1504 , Y02T10/128 , Y02T10/18
摘要： To provide a control apparatus and method for a homogeneous charge compression-ignited internal-combustion engine, adapted to reduce combustion noise, as well as fluctuations in torque, during switching from spark-ignited combustion to homogeneous charge compression-ignited combustion. In accordance with information on the operational state of the internal-combustion engine, a combustion mode switching discriminator 21 selects a homogeneous charge compression-ignited combustion mode if the engine is operating under the conditions that allow homogeneous charge compression-ignited combustion. If the engine is operating under the conditions that do not allow homogeneous charge compression-ignited combustion, the combustion mode switching discriminator 21 selects a spark-ignited combustion mode. Immediately after combustion mode switching from spark-ignited combustion to homogeneous charge compression-ignited combustion, a combustion mode switching corrector 28 outputs switching correction quantities with respect to operating quantities for homogeneous charge compression-ignited combustion. The operating quantities for homogeneous charge compression-ignited combustion are adjusted using the switching correction quantities that the combustion mode switching corrector 28 has output with respect to the operating quantities for homogeneous charge compression-ignited combustion immediately after switching to the homogeneous charge compression-ignited combustion mode. New operating quantities obtained from the adjustments are output as control quantities from a combustion mode selector 27.
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5.发明公开Controller of internal combusion engine of compression ignition combustion type 有权Steuergerätfüreinen Verbrennungsmotor mitKompressionszündung
公开(公告)号：EP1936168A3
公开(公告)日：2014-07-16
申请号：EP07021734.4
申请日：2007-11-08
申请人： Hitachi, Ltd.
发明人： Kakuya, Hiromu , Kumano, Kengo , Yamaoka, Shiro
CPC分类号： F02D41/3035 , F02B1/12 , F02B23/104 , F02B2075/125 , F02D13/0265 , F02D41/3064 , F02D41/3076 , F02D41/402 , F02D2041/001 , F02M26/01 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/44
摘要： The invention relates to a controller 20 of an internal combustion engine 100 capable of spark ignition combustion and compression ignition combustion which restrains the degradation of operation performance and exhaust performance at the time of combustion type switching. The controller 20 includes control means for performing combined combustion which leads to ignition combustion by a pressure rise by spark ignition combustion through adjustment of an internal cylinder 7 temperature and a combustion speed at the end of compression, wherein the combined combustion is performed in the process of combustion type switching between spark ignition combustion and compression ignition combustion based on a result of determination of whether or not combustion type switching is possible, thus implementing a smooth combustion type switching.
摘要翻译： 本发明涉及能够进行火花点火燃烧和压缩点火燃烧的内燃机100的控制器20，其抑制燃烧式切换时的运行性能和排气性能的劣化。 控制器20包括用于执行组合燃烧的控制装置，其通过调节内筒7的温度和在压缩结束时的燃烧速度通过火花点火燃烧而导致点火燃烧，其中在该过程中执行组合燃烧 基于是否能够进行燃烧式切换的结果，在火花点火燃烧和压缩点火燃烧之间进行燃烧式切换，从而实现平滑燃烧式切换。
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公开(公告)号：EP1990527A2
公开(公告)日：2008-11-12
申请号：EP08008584.8
申请日：2008-05-07
申请人： Hitachi, Ltd.
发明人： Kumano, Kengo , Kakuya, Hiromu , Yamaoka, Shiro
CPC分类号： F02D41/307 , F02B1/12 , F02B23/104 , F02B2075/125 , F02D9/02 , F02D11/105 , F02D13/0207 , F02D13/0265 , F02D37/02 , F02D41/0002 , F02D41/3035 , F02D41/34 , F02D2041/001 , F02M26/01 , F02P5/1504 , Y02T10/123 , Y02T10/14 , Y02T10/18 , Y02T10/42
摘要： In an engine controller capable of carrying out spark ignition type combustion and compressed self-ignition type combustion, in order to suppress operation performance deterioration and exhaust performance deterioration at the time of switching a combustion mode from the compressed self-ignition type combustion to the spark ignition type combustion, intake pipe pressure downstream a throttle is quickly reduced by making the throttle opening degree smaller than a target throttle opening degree of the spark ignition type combustion immediately after switching for a certain period during the combustion mode is switched from the compressed self-ignition type combustion to the spark ignition type combustion. As a result, responsiveness of an intake amount at the time of switching the combustion mode from the compressed self-ignition type combustion to the spark ignition type combustion is enhanced, and combustion switching without exhaust deterioration and torque variation is realized.
摘要翻译： 在能够进行火花点火式燃烧和压缩自点火式燃烧的发动机控制器中，为了抑制将燃烧模式从压缩自点火式燃烧切换到火花时的运转性能劣化和排气性能劣化 点火式燃烧时，在燃烧模式之间切换一定时间之后，使得节气门开度小于火花点火式燃烧的目标节气门开度，从节气门开始下降的进气管压力， 点火式燃烧到火花点火式燃烧。 结果，提高了将燃烧模式从压缩自点火式燃烧切换到火花点火式燃烧时的进气量的响应性，并且实现了没有排气劣化和扭矩变化的燃烧切换。
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公开(公告)号：EP2113752B1
公开(公告)日：2016-01-27
申请号：EP09159119.8
申请日：2009-04-29
申请人： Hitachi, Ltd.
CPC分类号： G01F1/684 , G01F1/6842 , G01F1/698 , G01F1/699
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公开(公告)号：EP1726810B1
公开(公告)日：2010-03-10
申请号：EP06009873.8
申请日：2006-05-12
申请人： HITACHI, LTD.
发明人： Yamaoka, Shiro , Sukegawa, Yoshihiro , Tokuyasu, Noboru , Igarashi, Shinya , Fukatsu, Katsuaki , Kadohiro, Takashi , Iwaki, Hidefumi , Ichihara, Takanobu
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
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公开(公告)号：EP2113752A1
公开(公告)日：2009-11-04
申请号：EP09159119.8
申请日：2009-04-29
申请人： Hitachi Ltd.
CPC分类号： G01F1/684 , G01F1/6842 , G01F1/698 , G01F1/699
摘要： There is provided a thermal type flow meter capable of accurately detecting a flow rate even when a fluid temperature varies rapidly or when the fluid temperature is high. A probe PR includes: a first main heating resistor MH1; a second main heating resistor MH2 set at a temperature Tm 2 different from that of the first main heating resistor Tm 1 ; and a sub-heating resistor SH1 for heating lead wires LD of the two main heating resistors MH1, MH2. A CPU of a sensor control circuit finds a fluid temperature by using the two main heating resistors MH1, MH2, and finds a fluid flow rate by using at least one of the two main heating resistors MH1, MH2.
摘要翻译： 提供了一种热式流量计，即使在流体温度迅速变化或流体温度高时，也能够精确地检测流量。 探针PR包括：第一主发热电阻器MH1; 设定在与第一主发热电阻器Tm1不同的温度Tm2的第二主发热电阻器MH2; 以及用于加热两个主加热电阻器MH1，MH2的引线LD的辅助加热电阻器SH1。 传感器控制电路的CPU通过使用两个主加热电阻器MH1，MH2找到流体温度，并通过使用两个主加热电阻器MH1，MH2中的至少一个来找到流体流量。
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公开(公告)号：EP1950406A2
公开(公告)日：2008-07-30
申请号：EP07024125.2
申请日：2007-12-12
申请人： Hitachi, Ltd.
发明人： Yamaoka, Shiro , Ohata, Eiichiro , Kubo, Jun , Tokuyasu, Noboru , Otsuki, Toshiki , Hoshika, Hiroaki
IPC分类号： F02M25/07
CPC分类号： F02D41/005 , F02B29/0406 , F02B2275/14 , F02D2041/0075 , F02M26/05 , F02M26/06 , F02M26/28 , F02M26/35 , F02M26/47 , F02M26/49 , Y02T10/47
摘要： The present invention relates to an exhaust gas recirculation system which prevents an EGR sensor installed in an engine's EGR path (9) from being soiled by soiling substances in exhaust. A catalyst (23, 24, 7) is positioned upstream of the EGR sensor (12) to purify the soiling substances in EGR gas. The status of the EGR sensor (12) is properly controlled in accordance with the conditions of the catalyst (23, 24, 7). This ensures the EGR sensor (12) is less likely to be affected by the soiling substances in the exhaust under any circumstances of the EGR path (9) and allows the EGR sensor (12) to avoid a decrease in the accuracy of EGR gas detection. An alternative configuration may be employed such that the EGR gas recirculates from the downstream side of a catalyst (7) installed in a main exhaust path.
摘要翻译： 本发明涉及一种废气再循环系统，其防止安装在发动机的EGR通路（9）中的EGR传感器被污染排气中的物质所污染。 催化剂（23,24,7）位于EGR传感器（12）的上游，以净化EGR气体中的污物。 根据催化剂（23,24,7）的条件适当地控制EGR传感器（12）的状态。 这确保了在EGR通路（9）的任何情况下，EGR传感器（12）不太可能受到废气中污染物质的影响，并允许EGR传感器（12）避免EGR气体检测精度的降低 。 可以采用替代配置，使得EGR气体从安装在主排气路径中的催化剂（7）的下游侧再循环。
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