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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
IPC分类号： F02B17/00
CPC分类号： F02D41/403 , F02D35/025 , F02D35/026 , Y02T10/44
摘要： 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.
摘要翻译： 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
CPC分类号： F02D41/403 , F02D2250/18 , F02D2250/36 , Y02T10/44
摘要： 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.
摘要翻译： 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
IPC分类号： F02D41/40
CPC分类号： F02D41/403 , F02D35/025 , F02D35/026 , Y02T10/44
摘要： 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.
摘要翻译： 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：US07657361B2
公开(公告)日：2010-02-02
申请号：US12065554
申请日：2006-09-01
申请人： Mikio Inoue , Yasuyuki Terada
发明人： Mikio Inoue , Yasuyuki Terada
CPC分类号： F02D41/405 , F02D41/08 , F02D41/1498 , F02D41/16 , F02D41/2438 , F02D41/2467 , F02D41/3827 , F02D41/3836 , F02D41/403 , F02D2200/0602 , Y02T10/44
摘要： An electronic control unit 30 of a diesel engine 10 stores a relationship between a required fuel injection amount and a corresponding injection command signal. The unit 30 generates the injection command signal corresponding to the required fuel injection amount based on the stored relationship, and drives injectors 20 based on the injection command signal to inject fuel. The unit 30 includes a shifting section, which forcibly changes the engine rotational speed by temporarily shifting the fuel injection mode between a first injection mode and a second injection mode. The first injection mode is a mode in which an after injection is executed after a main injection. The after injection has less fuel injection amount than the main injection. The second injection mode is a mode in which the after injection is not executed. The unit 30 includes a correction section, which detects the variation of the engine rotational speed caused by shifting the fuel injection mode, and corrects the relationship based on comparison between the detected variation of the engine rotational speed and a previously determined standard variation of the engine rotational speed.
摘要翻译： 柴油发动机10的电子控制单元30存储所需燃料喷射量与相应的喷射指令信号之间的关系。 单元30基于所存储的关系产生与所需燃料喷射量对应的喷射命令信号，并且基于喷射命令信号驱动喷射器20以喷射燃料。 单元30包括变速部，通过在第一喷射模式和第二喷射模式之间临时移动燃料喷射模式来强制地改变发动机转速。 第一喷射模式是在主喷射之后执行后喷射的模式。 注射后的燃料喷射量比主喷射量少。 第二喷射模式是不执行后喷射的模式。 单元30包括校正部，该校正部检测由变更燃料喷射模式引起的发动机转速的变化，并且根据检测到的发动机转速的变化与先前确定的发动机的标准变化的比较来校正关系 转速。
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公开(公告)号：US08538664B2
公开(公告)日：2013-09-17
申请号：US12738461
申请日：2008-11-13
CPC分类号： F02D41/403 , F02D19/0605 , F02D19/061 , F02D19/0628 , F02D19/0649 , F02D19/0684 , F02D19/088 , F02D41/0025 , F02D41/123 , F02D41/1498 , F02D41/40 , F02D41/401 , F02D41/405 , F02D2200/0612 , F02D2200/1015 , F02D2250/28 , Y02T10/36 , Y02T10/44
摘要： An electronic controller for a diesel engine (1) performs primary injection control in which primary injection of fuel is controlled based on an operational status of the diesel engine and additional injection control in which additional injection of the fuel is controlled for estimation of a cetane number of the fuel. The electronic controller includes a control means that, as the additional injection control, causes a plurality of fuel injections to be performed at different injection timings as the additional injection, calculates the amount of increase in torque of a crankshaft (14) due to each of the fuel injections, estimates injection timing at which misfiring starts to occur based on a trend of variation in the calculated torque increase amount as the injection timing of the fuel injections is shifted in one direction, and estimates the cetane number of the fuel based on the estimated injection timing.
摘要翻译： 用于柴油发动机（1）的电子控制器执行主喷射控制，其中基于柴油发动机的操作状态来控制燃料的初次喷射，并且附加喷射控制，其中控制燃料的附加喷射以估计十六烷值 的燃料。 电子控制器包括控制装置，作为附加喷射控制，作为附加喷射，以不同的喷射正时进行多次燃料喷射，计算由于每个喷射时间而产生的曲轴（14）的扭矩的增加量 燃料喷射，根据燃料喷射的喷射正时在一个方向上移动时，基于计算出的转矩增加量的变化趋势开始发生失火的喷射正时，并且基于燃料喷射来估计燃料的十六烷值 估计喷射正时。
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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
IPC分类号： F02B3/00
CPC分类号： F02D41/403 , F02D35/023 , F02D35/026 , F02D41/047 , F02D41/402 , F02D2041/0015 , F02D2200/0414 , Y02T10/44
摘要： 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.
摘要翻译： 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：US20100268444A1
公开(公告)日：2010-10-21
申请号：US12738461
申请日：2008-11-13
CPC分类号： F02D41/403 , F02D19/0605 , F02D19/061 , F02D19/0628 , F02D19/0649 , F02D19/0684 , F02D19/088 , F02D41/0025 , F02D41/123 , F02D41/1498 , F02D41/40 , F02D41/401 , F02D41/405 , F02D2200/0612 , F02D2200/1015 , F02D2250/28 , Y02T10/36 , Y02T10/44
摘要： An electronic controller for a diesel engine (1) performs primary injection control in which primary injection of fuel is controlled based on an operational status of the diesel engine and additional injection control in which additional injection of the fuel is controlled for estimation of a cetane number of the fuel. The electronic controller includes a control means that, as the additional injection control, causes a plurality of fuel injections to be performed at different injection timings as the additional injection, calculates the amount of increase in torque of a crankshaft (14) due to each of the fuel injections, estimates injection timing at which misfiring starts to occur based on a trend of variation in the calculated torque increase amount as the injection timing of the fuel injections is shifted in one direction, and estimates the cetane number of the fuel based on the estimated injection timing.
摘要翻译： 用于柴油发动机（1）的电子控制器执行主喷射控制，其中基于柴油发动机的操作状态来控制燃料的初次喷射，并且附加喷射控制，其中控制燃料的附加喷射以估计十六烷值 的燃料。 电子控制器包括控制装置，作为附加喷射控制，作为附加喷射，以不同的喷射正时进行多次燃料喷射，计算由于每个喷射时间而产生的曲轴（14）的扭矩的增加量 燃料喷射，根据燃料喷射的喷射正时在一个方向上移动时，基于计算出的转矩增加量的变化趋势开始发生失火的喷射正时，并且基于燃料喷射来估计燃料的十六烷值 估计喷射正时。
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公开(公告)号：US08428850B2
公开(公告)日：2013-04-23
申请号：US12746426
申请日：2008-10-31
IPC分类号： F02B3/00
CPC分类号： F02D41/403 , F02D2250/18 , F02D2250/36 , Y02T10/44
摘要： 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.
摘要翻译： 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：US08307695B2
公开(公告)日：2012-11-13
申请号：US12678828
申请日：2009-02-05
申请人： Takeshi Miyaura , Yasuyuki Terada , Akio Matsunaga
发明人： Takeshi Miyaura , Yasuyuki Terada , Akio Matsunaga
IPC分类号： G01M15/00
CPC分类号： F02D41/0025 , F02D19/061 , F02D19/0636 , F02D19/0649 , F02D35/025 , F02D35/026 , F02D41/0007 , F02D41/123 , F02D41/1498 , F02D41/2422 , F02D41/402 , F02D2200/0612 , Y02T10/36
摘要： A cetane number estimation method is provided in which: the preliminary injection is preformed multiple times at different compression end temperatures with a fuel tank (26) containing fuel having a predetermined cetane number, and an engine torque increase caused by each preliminary injection is calculated and the relation between the compression end temperatures at the respective preliminary injections and the engine torque increases caused by the respective preliminary injections is determined; the compression end temperature and the engine torque increase at a predetermined reference point on the relation are recorded as a basic compression eng temperature and a basic engine toque increase; the preliminary injection is performed at the basic compression end temperature and an engine torque increase caused by this preliminary injection is calculated; and the cetane number of fuel is estimated based on the relation between the calculated engine torque increase and the basic engine torque increase.
摘要翻译： 提供一种十六烷值估计方法，其中：在具有预定十六烷值的燃料的燃料箱（26）中，在不同的压缩终止温度下进行多次预备喷射，并且计算由每次预喷射引起的发动机转矩增加， 确定各个预喷射时的压缩终止温度与由各个预喷射引起的发动机转矩增加之间的关系; 关系上的预定基准点处的压缩结束温度和发动机转矩增加被记录为基本压缩ENG温度和基本发动机转矩增加; 在基本压缩终止温度下进行预喷射，并计算由该预喷射引起的发动机转矩增加; 并且基于计算的发动机转矩增加与基本发动机转矩增加之间的关系来估计燃料的十六烷值。
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公开(公告)号：US20100319444A1
公开(公告)日：2010-12-23
申请号：US12678828
申请日：2009-02-05
申请人： Takeshi Miyaura , Yasuyuki Terada , Akio Matsunaga
发明人： Takeshi Miyaura , Yasuyuki Terada , Akio Matsunaga
IPC分类号： G01M15/04
CPC分类号： F02D41/0025 , F02D19/061 , F02D19/0636 , F02D19/0649 , F02D35/025 , F02D35/026 , F02D41/0007 , F02D41/123 , F02D41/1498 , F02D41/2422 , F02D41/402 , F02D2200/0612 , Y02T10/36
摘要： A cetane number estimation method is provided in which: the preliminary injection is preformed multiple times at different compression end temperatures with a fuel tank (26) containing fuel having a predetermined cetane number, and an engine torque increase caused by each preliminary injection is calculated and the relation between the compression end temperatures at the respective preliminary injections and the engine torque increases caused by the respective preliminary injections is determined; the compression end temperature and the engine torque increase at a predetermined reference point on the relation are recorded as a basic compression eng temperature and a basic engine toque increase; the preliminary injection is performed at the basic compression end temperature and an engine torque increase caused by this preliminary injection is calculated; and the cetane number of fuel is estimated based on the relation between the calculated engine torque increase and the basic engine torque increase.
摘要翻译： 提供一种十六烷值估计方法，其中：在具有预定十六烷值的燃料的燃料箱（26）中，在不同的压缩终止温度下进行多次预备喷射，并且计算由每次预喷射引起的发动机转矩增加， 确定各个预喷射时的压缩终止温度与由各个预喷射引起的发动机转矩增加之间的关系; 关系上的预定基准点处的压缩结束温度和发动机转矩增加被记录为基本压缩ENG温度和基本发动机转矩增加; 在基本压缩终止温度下进行预喷射，并计算由该预喷射引起的发动机转矩增加; 并且基于计算的发动机转矩增加与基本发动机转矩增加之间的关系来估计燃料的十六烷值。
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