公开(公告)号：US07747377B2

公开(公告)日：2010-06-29

申请号：US12194130

申请日：2008-08-19

申请人： Kenichiro Nakata ,  Koji Ishizuka

发明人： Kenichiro Nakata ,  Koji Ishizuka

IPC分类号： F02D41/30 ,  F02M47/02 ,  F02D41/04

CPC分类号： F02D41/401 ,  F02D35/028 ,  F02D41/2467 ,  F02D41/3809 ,  F02D41/40 ,  F02D2200/0602 ,  F02D2250/04 ,  F02M2200/24 ,  Y02T10/44

摘要： A fuel injection control device (ECU) for controlling injection supply of fuel to a target engine has a program for sequentially sensing fuel pressure fluctuating with injection of a predetermined injector a program for detecting an injection centroid of a diagram as a profile of a transition of an injection rate of the injector at a present time based on a transition of the sequentially sensed fuel pressure, and a program for varying an injection command (injection timing) of the injector based on the detected injection centroid and an injection centroid of a predetermined basic diagram such that a relative positional relationship between the injection centroids of the diagram as the actual profile of the injection rate transition and the basic diagram becomes a relationship, in which timings of the injection centroids are close to each other.

摘要翻译： 用于控制向目标发动机的燃料喷射供应的燃料喷射控制装置（ECU）具有用于依次感测燃料压力波动的程序，喷射预定喷射器，用于检测图的喷射重心的程序作为转换轮廓的轮廓 基于顺序感测的燃料压力的转变，目前的喷射器的喷射速度和用于根据检测到的喷射重心改变喷射器的喷射命令（喷射正时）的程序和预定基准的喷射重心 使得作为喷射速率转变的实际轮廓的图的喷射质心与基本图之间的相对位置关系成为其中喷射质心的定时彼此接近的关系。

公开(公告)号：US20090063012A1

公开(公告)日：2009-03-05

申请号：US12195609

申请日：2008-08-21

申请人： Kenichiro Nakata ,  Koji Ishizuka ,  Ru-Long Li

发明人： Kenichiro Nakata ,  Koji Ishizuka ,  Ru-Long Li

IPC分类号： F02D41/30

CPC分类号： F02D41/2467 ,  F02D41/3845 ,  F02D41/40 ,  F02D41/402 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04 ,  F02D2250/14 ,  F02M57/005 ,  F02M2200/24 ,  Y02T10/44

摘要： A common rail type fuel injection system of an engine includes: a common rail for accumulating and holding high-pressure fuel; a fuel pump for pressure-feeding fuel to the common rail; and an injector for injecting the high-pressure fuel accumulated and held in the common rail. A pressure sensor is disposed in a fuel suction pod of the injector. An ECU sequentially detects a fuel pressure varied when the injector injects the fuel and sequentially detects a fuel pressure varied when the fuel pump pressure-feeds the fuel. When the injector injects the fuel the ECU computes injection pressure by the detection values of these pressures and computes injection characteristics by the injector on the basis of the injection pressure.

摘要翻译： 发动机共轨式燃料喷射系统包括：用于蓄积和保持高压燃料的共轨; 燃料泵，用于向共轨供油; 以及用于喷射积存并保持在共轨中的高压燃料的喷射器。 压力传感器设置在喷射器的燃料吸入舱中。 ECU顺序地检测当喷射器喷射燃料时变化的燃料压力，并且依次检测当燃料泵对燃料进行加压供给时变化的燃料压力。 当喷射器喷射燃料时，ECU通过这些压力的检测值计算喷射压力，并且基于喷射压力计算喷射器的喷射特性。

公开(公告)号：US20090063011A1

公开(公告)日：2009-03-05

申请号：US12194917

申请日：2008-08-20

申请人： Kenichiro Nakata ,  Koji Ishizuka

发明人： Kenichiro Nakata ,  Koji Ishizuka

IPC分类号： F02D41/30

CPC分类号： F02M57/005 ,  F02D41/2474 ,  F02D41/3836 ,  F02D2200/0602 ,  F02M2200/24 ,  G01L27/002 ,  G01L27/005

摘要： A fuel injection device includes a fuel injection valve for injecting fuel. A pressure sensor is configured to output detection signal correspondingly to pressure of the fuel. The fuel injection device further includes a storage unit for storing individual difference information, which indicates an output characteristic of the detection signal. The output characteristic is obtained by an examination. The individual difference information indicates a relationship between change in test pressure and change in detection signal. The test pressure is actually applied to the pressure sensor in the examination. The change in detection signal is attributed to the change in test pressure.

摘要翻译： 燃料喷射装置包括用于喷射燃料的燃料喷射阀。 压力传感器被配置为相应于燃料的压力输出检测信号。 燃料喷射装置还包括存储单元，用于存储指示检测信号的输出特性的各个差异信息。 通过检查获得输出特性。 个体差异信息表示测试压力的变化和检测信号的变化之间的关系。 试验压力实际应用于检查中的压力传感器。 检测信号的变化归因于测试压力的变化。

公开(公告)号：US07317983B2

公开(公告)日：2008-01-08

申请号：US11455702

申请日：2006-06-20

申请人： Koji Ishizuka ,  Kenichiro Nakata ,  Jun Kawamura

发明人： Koji Ishizuka ,  Kenichiro Nakata ,  Jun Kawamura

IPC分类号： F02D41/14 ,  G06F19/00 ,  F02D45/00

CPC分类号： F02D41/008 ,  F02D41/1497 ,  F02D41/3809 ,  F02D2041/1432 ,  F02D2200/1004

摘要： A sensor signal from a speed sensor is inputted into an ECU. The ECU calculates a rotation speed of a crankshaft in a predetermined period based on the sensor signal. The rotation speed is filtered by a frequency which is defined based on a combustion frequency of the engine to obtain a value corresponding to a current torque. The ECU calculates a workload of each cylinder based on the value corresponding to the current torque, and controls characteristic of each cylinder based on the workload.

摘要翻译： 来自速度传感器的传感器信号被输入到ECU中。 ECU基于传感器信号计算预定时间段内的曲轴的转速。 旋转速度被基于发​​动机的燃烧频率定义的频率进行过滤，以获得与当前转矩对应的值。 ECU根据与当前转矩对应的值，计算每个气缸的工作负荷，并根据工作量来控制各气缸的特性。

公开(公告)号：US20070044548A1

公开(公告)日：2007-03-01

申请号：US11508280

申请日：2006-08-23

申请人： Koji Ishizuka ,  Kenichiro Nakata

发明人： Koji Ishizuka ,  Kenichiro Nakata

IPC分类号： G01L3/26 ,  G01R33/025 ,  G01B7/30 ,  G01M15/00

CPC分类号： F02D41/009 ,  F02D41/042 ,  F02D41/123 ,  F02D41/22 ,  G01M15/046

摘要： A rotation angle sensing device calculates an average value of calculation values of time necessary for rotation of each one of sections provided by equally dividing one rotation of a crankshaft. The device calculates an average value of the average values of the entire sections to calculate an entire section average value. The device calculates ratios of the average values of the respective sections to the entire section average value. The device eliminates an influence of rotation fluctuation of the crankshaft from the ratios by using reference ratios, which are calculated as ratios of the average values of the respective sections to the entire section average value in the case where there is no structural error. Thus, the device calculates learning values for compensating for the structural error.

公开(公告)号：US08459234B2

公开(公告)日：2013-06-11

申请号：US12186038

申请日：2008-08-05

申请人： Kenichiro Nakata ,  Koji Ishizuka

发明人： Kenichiro Nakata ,  Koji Ishizuka

IPC分类号： F02M51/00

CPC分类号： F02D41/221 ,  F02D41/2435 ,  F02D41/2467 ,  F02D41/3836 ,  F02D41/40 ,  F02D41/402 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2200/0618 ,  Y02T10/44

摘要： A fuel injection device includes a fuel injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel. A pressure sensor is located in a fuel passage, which extends from the pressure-accumulation vessel to a nozzle hole of the fuel injection valve. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel and configured to detect pressure of fuel. The fuel injection device further includes a storage unit for storing individual difference information, which indicates an injection characteristic of the fuel injection valve. The injection characteristic is obtained by an examination. The individual difference information indicates a relationship between an injection state when the fuel injection valve performs fuel injection and a fluctuation in detected pressure of the pressure sensor. The fluctuation is attributed to the fuel injection.

摘要翻译： 燃料喷射装置包括从蓄压容器分配的用于喷射燃料的燃料喷射阀。 压力传感器位于从蓄压容器延伸到燃料喷射阀的喷嘴孔的燃料通道中。 压力传感器比压力蓄积容器位于更靠近喷嘴孔的位置，并被配置成检测燃料的压力。 燃料喷射装置还包括存储单元，用于存储指示燃料喷射阀的喷射特性的各个差异信息。 通过检查获得注射特性。 各个差异信息表示燃料喷射阀进行燃料喷射时的喷射状态与压力传感器的检测压力的波动之间的关系。 波动归因于燃油喷射。

公开(公告)号：US07921707B2

公开(公告)日：2011-04-12

申请号：US12258726

申请日：2008-10-27

申请人： Koji Ishizuka ,  Kenichiro Nakata

发明人： Koji Ishizuka ,  Kenichiro Nakata

IPC分类号： G01M15/04

CPC分类号： F02D41/0072 ,  F02B29/0406 ,  F02D41/0055 ,  F02D41/0085 ,  F02D41/1497 ,  F02D41/2451 ,  F02D41/3809 ,  F02D2200/0614 ,  F02D2200/1002 ,  F02D2250/04 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/47

摘要： An exhaust gas recirculation distribution variation sensing device has a torque sensing section that senses instantaneous torque caused with combustion of fuel injected from an injector for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the injected fuel for each cylinder, and an exhaust gas recirculation distribution variation calculating section that calculates an exhaust gas recirculation distribution variation as a distribution variation of recirculated exhaust gas to respective cylinders based on a variation in the torque sensing value of the torque sensing section among the cylinders (i.e., a torque variation) and a variation in the injection quantity sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation).

摘要翻译： 废气再循环分配变化检测装置具有感测从每个气缸的喷射器喷射的燃料的燃烧引起的瞬时转矩的转矩检测部，感测每个气缸的喷射燃料的实际喷射量的喷射量感测部，以及 废气再循环分配变化计算部，其基于所述气缸中的所述转矩检测部的转矩检测值的变化，计算排气再循环分配变化，作为所述再循环排气到各气缸的分布变化量（即，转矩变动量 ）和喷射量感测部分的喷射量感测值在气缸之间的变化（即，喷射量变化）。

公开(公告)号：US07677092B2

公开(公告)日：2010-03-16

申请号：US12258750

申请日：2008-10-27

申请人： Koji Ishizuka ,  Kenichiro Nakata

发明人： Koji Ishizuka ,  Kenichiro Nakata

IPC分类号： G01M15/04

CPC分类号： F02D41/403 ,  F02D41/12 ,  F02D41/1498 ,  F02D41/2438 ,  F02D41/247 ,  F02D2250/04 ,  Y02T10/44

摘要： A cylinder characteristic variation sensing device has a small injection controlling section that performs small injections sequentially in respective cylinders, a torque increase amount sensing section that senses an increase amount of output torque caused in connection with the small injection for each cylinder, an injection quantity sensing section that senses an actual injection quantity of the small injection for each cylinder, and a cylinder characteristic variation calculating section that calculates a variation in a cylinder characteristic among the cylinders (i.e., a cylinder characteristic variation) based on a variation in the sensing value of the injection quantity sensing section among the cylinders (i.e., an injection quantity variation) and a variation in the sensing value of the torque increase amount sensing section among the cylinders (i.e., a torque increase amount variation).

摘要翻译： 气缸特性变化检测装置具有小型喷射控制部分，其在各个气缸中顺序地进行小喷射;扭矩增加量感测部分，其感测与每个气缸的小喷射相关联的输出转矩增加量;喷射量感测 感测每个气缸的小喷射的实际喷射量的气缸部分，以及气缸特性变化计算部分，其基于感测值的变化来计算气缸之间的气缸特性变化（即气缸特性变化） 气缸中的喷射量感测部（即，喷射量变化）和转矩增加量感测部的感测值的变化（即，转矩增加量变化）。

公开(公告)号：US20090088951A1

公开(公告)日：2009-04-02

申请号：US12236882

申请日：2008-09-24

申请人： Koji Ishizuka ,  Kenichiro Nakata

发明人： Koji Ishizuka ,  Kenichiro Nakata

IPC分类号： G01M15/09

CPC分类号： F02D41/22 ,  F02D41/3809 ,  F02D2041/224 ,  F02D2041/225 ,  F02D2200/0602 ,  F02M57/005

摘要： A pressure sensor is located in a fuel passage, which extends from a pressure-accumulation vessel to a nozzle hole of a fuel injection valve. The pressure sensor is located closer to a nozzle hole than the pressure-accumulation vessel for detecting pressure fluctuated by injection of fuel through the nozzle hole. An instruction signal output unit outputs an injection instruction signal so as to instruct an injection mode of fuel to the fuel injection valve. A defective injection determination unit determines whether a detected pressure of the fuel pressure sensor is fluctuated in a fluctuation mode in a range assumed from the injection instruction signal. The defective injection determination unit determines that a defective injection occurs when determining that the detected pressure is out of the fluctuation mode in the assumed range.

摘要翻译： 压力传感器位于从蓄压容器延伸到燃料喷射阀的喷嘴孔的燃料通道中。 压力传感器位于比用于检测通过喷嘴孔喷射燃料而波动的压力的压力蓄积容器更靠近喷嘴孔。 指示信号输出单元输出喷射指示信号，以向燃料喷射阀指示燃料喷射模式。 有缺陷的喷射确定单元确定燃料压力传感器的检测压力是否在从喷射指令信号假定的范围内以波动模式波动。 当在假设的范围内确定检测到的压力超出波动模式时，缺陷喷射确定单元确定发生有缺陷的喷射。

公开(公告)号：US20090084356A1

公开(公告)日：2009-04-02

申请号：US12233800

申请日：2008-09-19

申请人： Kenichiro NAKATA ,  Koji Ishizuka

发明人： Kenichiro NAKATA ,  Koji Ishizuka

IPC分类号： F02M63/00

CPC分类号： F02D41/3845 ,  F02D41/2464 ,  F02D41/3863 ,  F02D2250/31 ,  F02M57/005

摘要： A common-rail fuel injection system is equipped with a common-rail, a fuel pump 11, and an injector. The fuel pump has a plurality of fuel pumping systems. A pressure sensor is provided at a fuel inlet of the injector. When the fuel pump supplies fuel to each of the fuel pumping systems, an ECU detects a variation in fuel pressure in a fuel passage between the fuel pump and the injector. Based on the detected fuel pressure variation, the ECU computes a pumping characteristic with respect to each of the fuel pumping systems.

摘要翻译： 共轨燃料喷射系统配备有共轨，燃料泵11和喷射器。 燃料泵具有多个燃料泵送系统。 压力传感器设置在喷射器的燃料入口处。 当燃料泵将燃料供给到每个燃料泵送系统时，ECU检测燃料泵和喷射器之间的燃料通道中的燃料压力的变化。 基于检测到的燃料压力变化，ECU计算相对于每个燃料泵送系统的泵送特性。