公开(公告)号：US09002666B2

公开(公告)日：2015-04-07

申请号：US13372791

申请日：2012-02-14

申请人： Yoshimitsu Takashima

发明人： Yoshimitsu Takashima

IPC分类号： G01F17/00 ,  F02D41/24 ,  F02D41/22 ,  F02M57/00

CPC分类号： F02D41/2467 ,  F02D41/221 ,  F02D2200/0602 ,  F02M57/005

摘要： A defective-portion detector has a detecting portion which detects a variation in fuel pressure as a fuel pressure waveform based on a detection value of a fuel pressure sensor and a computing portion which computes, based on the fuel pressure waveform, a plurality of injection-rate parameters required for identifying an injection-rate waveform corresponding to the fuel pressure waveform. Further, the detector has a determining portion which determines whether each learning value of the injection-rate parameters is an abnormal value and an identifying portion which identifies a defective portion in the fuel injection system based on a combination of abnormal learning values which the determining portion has determined.

摘要翻译： 缺陷部分检测器具有检测部分，其基于燃料压力传感器的检测值和计算部分，基于燃料压力波形来检测作为燃料压力波形的燃料压力的变化，所述燃料压力波形基于燃料压力波形， 用于识别对应于燃料压力波形的喷射率波形所需的速率参数。 此外，检测器具有确定部，其确定喷射率参数的每个学习值是否为异常值;以及识别部，其基于异常学习值的组合来识别燃料喷射系统中的缺陷部分，所述判定部 已经确定。

公开(公告)号：US20100308979A1

公开(公告)日：2010-12-09

申请号：US12796845

申请日：2010-06-09

申请人： Yoshimitsu Takashima

发明人： Yoshimitsu Takashima

IPC分类号： G08B9/00

CPC分类号： G01L23/18 ,  F02D35/023 ,  F02D35/025 ,  F02D41/008 ,  F02M2200/24 ,  G01K13/02 ,  G01K2205/02 ,  G01L9/065 ,  G01L19/0092

摘要： A sensor system includes a sensor unit which has a pressure sensor, a temperature sensor and a selector switching between a pressure detection signal and a temperature detection signal. The sensor system further includes a processing unit which outputs a switching command signal to the selector and receives a detection signal from the sensor unit. The switching command signal is transmitted through a communication line and the detection signal is transmitted through a signal line. The detection signal is transmitted to the processing unit in a form of an analog signal.

摘要翻译： 传感器系统包括具有压力传感器，温度传感器和在压力检测信号和温度检测信号之间切换的选择器的传感器单元。 传感器系统还包括处理单元，该处理单元向选择器输出切换命令信号并从传感器单元接收检测信号。 开关指令信号通过通信线路发送，检测信号通过信号线发送。 检测信号以模拟信号的形式发送到处理单元。

公开(公告)号：US08646323B2

公开(公告)日：2014-02-11

申请号：US13426657

申请日：2012-03-22

申请人： Yoshimitsu Takashima

发明人： Yoshimitsu Takashima

IPC分类号： G01M15/04

CPC分类号： F02D41/2467 ,  F02D41/247 ,  F02D41/2477 ,  F02D2200/0602

摘要： An apparatus of estimating fuel injection state of a fuel injection system have at least three injectors. The first and second injectors have fuel pressure sensors respectively. The third injector has no fuel pressure sensor. The apparatus detects an injected cylinder waveform to the first injector when the first injector injects fuel. The apparatus detects a first non-injected cylinder waveform to the second injector when the first injector injects fuel. The apparatus calculates correlations between the injected cylinder waveform and the first non-injected cylinder waveform. The apparatus acquires a second non-injected cylinder waveform detected by the first or second fuel pressure sensor when the third injector injects fuel. The apparatus estimates fuel injection state injected from the third injector based on the second non-injected cylinder waveform and the correlations.

摘要翻译： 估计燃料喷射系统的燃料喷射状态的装置具有至少三个喷射器。 第一和第二喷射器分别具有燃料压力传感器。 第三个喷油器没有燃油压力传感器。 当第一喷射器喷射燃料时，该装置检测喷射的气缸波形到第一喷射器。 当第一喷射器喷射燃料时，该装置检测到第二喷射器的第一未喷射气缸波形。 该装置计算喷射的气缸波形和第一未喷射气缸波形之间的相关性。 当第三喷射器喷射燃料时，该装置获取由第一或第二燃料压力传感器检测到的第二未喷射气缸波形。 该装置基于第二未喷射气缸波形和相关性来估计从第三喷射器喷射的燃料喷射状态。

公开(公告)号：US08849592B2

公开(公告)日：2014-09-30

申请号：US13214402

申请日：2011-08-22

申请人： Yoshimitsu Takashima

发明人： Yoshimitsu Takashima

IPC分类号： G01F23/14 ,  F02D41/38

CPC分类号： F02D41/3863 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02D2250/04

摘要： A fuel-injection condition detector includes a first approximate portion which approximates a plurality of fuel pressure values representing the descent pressure waveform or the ascent pressure waveform into a least-squares approximate line by least-squares method; and a weighting portion which applies a weight to the fuel pressure value. The weight is set greater as a difference between the fuel pressure and the least-squares approximate line is larger. Then, the weighted values are approximated into a weighted approximate line by the least-squares method.

摘要翻译： 一种燃料喷射状态检测器，其包括：通过最小二乘法近似将表示下降压力波形或上升压力波形的多个燃料压力值逼近最小二乘法近似线的第一近似部分; 以及对燃料压力值施加重量的加权部。 燃料压力与最小二乘法近似线之间的差值越大，重量越大。 然后，加权值通过最小二乘法逼近加权近似线。

公开(公告)号：US06755176B2

公开(公告)日：2004-06-29

申请号：US10373716

申请日：2003-02-27

申请人： Katsuhiko Takeuchi ,  Yoshimitsu Takashima ,  Taiyo Hiroi ,  Manabu Yoshidome

发明人： Katsuhiko Takeuchi ,  Yoshimitsu Takashima ,  Taiyo Hiroi ,  Manabu Yoshidome

IPC分类号： F02B304

CPC分类号： F02D41/0085 ,  F02D31/007 ,  F02D41/1498 ,  F02D41/2416 ,  F02D41/2454 ,  F02D41/2467 ,  F02D41/2483 ,  F02D41/402 ,  F02D2200/0602 ,  F02D2200/1015 ,  Y02T10/44

摘要： A fuel injection is carried out as n split injections. Each of injection quantities is defined by dividing an injection quantity into n fuel injections. A FCCB correction and an ISC correction are carried out while n split injection cycles are performed. A value obtained by adding up an FCCB correction for each injection cycle and an ISC correction for each injection cycle is updated and stored as a learned injection quantity. The learned injection quantity is calculated as an injection quantity correction for each cylinder to be added to a command injection quantity for each injection cycle.

摘要翻译： 作为n次分注进行燃料喷射。 每个注射量通过将喷射量除以n次燃料喷射来定义。 在执行n个分割喷射循环时执行FCCB校正和ISC校正。 通过将每个注射循环的FCCB校正和针对每个注射循环的ISC校正相加得到的值被更新并存储为学习注入量。 计算学习喷射量作为针对每个喷射循环的每个要添加到每个喷射量的气缸的喷射量校正。