公开(公告)号：US5400592A

公开(公告)日：1995-03-28

申请号：US194590

申请日：1994-02-10

申请人： Takashi Mukaihira ,  Toshio Ishii ,  Yutaka Takaku ,  Akihito Numata

发明人： Takashi Mukaihira ,  Toshio Ishii ,  Yutaka Takaku ,  Akihito Numata

IPC分类号： F02D45/00 ,  F01N3/20 ,  F01N11/00 ,  F02D41/12 ,  F02D41/14

CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2900/0422 ,  Y02T10/47

摘要： A catalytic diagnostic apparatus for determining whether a catalyst of an internal combustion engine has deteriorated as disclosed. Air-fuel ratio sensors are placed at the upstream and downstream sides of the catalytic converter, and the output signal from the upstream air-fuel sensor is used to control the air-fuel mixture provided to the engine via the fuel injectors, in a conventional closed loop operation. Diagnosis of the condition of the catalytic converter is performed only when selected engine operating parameters fall within a predetermined diagnostic range. When the engine is operated in the diagnostic range, the condition of the catalytic converter is analyzed by calculating a deterioration index based on a comparison of the variation of the output signals from the upstream and downstream air-fuel ratio sensors. In a preferred embodiment, a look-up table is provided to correct the deterioration index, based on the intake air flow rate to the engine, and on the cyclic frequency of the variation of the downstream air-fuel ratio sensor.

摘要翻译： 一种用于确定内燃机的催化剂是否已经劣化的催化诊断装置。 空燃比传感器被放置在催化转化器的上游侧和下游侧，并且来自上游空气 - 燃料传感器的输出信号用于通过燃料喷射器控制提供给发动机的空气 - 燃料混合物， 闭环操作。 催化转化器的状态的诊断仅在选定的发动机运转参数落在规定的诊断范围内的情况下进行。 当发动机在诊断范围内操作时，通过基于上游和下游空燃比传感器的输出信号的变化的比较来计算劣化指数来分析催化转化器的状态。 在优选实施例中，提供了一个查找表，用于根据对发动机的进气流量和下游空燃比传感器变化的循环频率来校正劣化指数。

公开(公告)号：US5237818A

公开(公告)日：1993-08-24

申请号：US854390

申请日：1992-03-19

申请人： Toshio Ishii ,  Masayoshi Kaneyasu ,  Seiji Asano

发明人： Toshio Ishii ,  Masayoshi Kaneyasu ,  Seiji Asano

IPC分类号： F01N3/20 ,  F01N11/00 ,  F02D41/14 ,  F02D45/00 ,  G01N27/406

CPC分类号： G01N27/4065 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/47

摘要： A conversion efficiency of a catalyst is estimated by a correlation function concerning output signals of upper and down stream side air fuel ratio sensors. The conversion efficiency is measured by comparing the correlation function and a complement value of the correlation function with a comparing standard value.

摘要翻译： 通过与上下侧空燃比传感器的输出信号有关的相关函数来估计催化剂的转换效率。 通过将相关函数和相关函数的补码与比较标准值进行比较来测量转换效率。

公开(公告)号：US4748951A

公开(公告)日：1988-06-07

申请号：US3029

申请日：1987-01-13

申请人： Toshio Manaka ,  Takeshi Atago ,  Toshio Ishii

发明人： Toshio Manaka ,  Takeshi Atago ,  Toshio Ishii

IPC分类号： F02D41/16 ,  B62D5/065 ,  F02B1/04 ,  F02D31/00 ,  F02D41/00 ,  F02M3/07

CPC分类号： B62D5/065 ,  F02D31/005 ,  F02B1/04

摘要： An apparatus for controlling the idling engine speed of an automobile engine comprises: an engine speed sensor for detecting an engine speed; a control unit for calculating a difference between an actual engine speed detected by the sensor and a targeted idling engine speed preset in accordance with the operating conditions of the engine, for judging whether or not a power steering system is being operated to a point close to an operatable limit thereof when the automobile is at a standstill, and for outputting a signal for increasing by a predetermined value a gain of a proportional term for proportional-integral type feedback control employed in controlling the idling engine speed if judgment is made that the power steering system is being operated to a point close to the operatable limit thereof when the automobile is at a standstill; and an ISC valve for adjusting a flow rate of air supplied to the engine in accordance with a signal output by the control unit.

摘要翻译： 用于控制汽车发动机的空转发动机转速的装置包括：用于检测发动机转速的发动机转速传感器; 控制单元，用于计算由所述传感器检测的实际发动机转速与根据所述发动机的运行条件预设的目标怠速发动机转速之差，以判断动力转向系统是否正在操作到靠近 当汽车处于停止状态时，其可操作的限制，并且用于输出用于增加预定值的信号，用于在控制空转发动机转速时用于比例积分型反馈控制的比例项的增益，如果判断功率 当汽车处于停止状态时，转向系统正在操作到接近其可操作极限的点; 以及ISC阀，用于根据控制单元输出的信号来调节供给到发动机的空气的流量。

公开(公告)号：US09014570B2

公开(公告)日：2015-04-21

申请号：US13417821

申请日：2012-03-12

申请人： Toshio Ishii

发明人： Toshio Ishii

IPC分类号： H04B10/04 ,  H04B10/12 ,  H04B10/50

CPC分类号： H04B10/50593

摘要： An optical transmitter includes: a modulator driver to generate a drive signal from an input signal; a modulator to generate a modulated optical signal according to the drive signal; an amplitude detector to detect an input amplitude representative of an amplitude of the input signal; and a controller to generate a waveform control signal according to the input amplitude detected by the amplitude detector. The modulator driver controls a waveform of the drive signal according to the waveform control signal.

摘要翻译： 光发射机包括：调制器驱动器，用于从输入信号产生驱动信号; 调制器，用于根据驱动信号产生调制光信号; 幅度检测器，用于检测表示所述输入信号的幅度的输入幅度; 以及控制器，用于根据由振幅检测器检测到的输入幅度产生波形控制信号。 调制器驱动器根据波形控制信号控制驱动信号的波形。

公开(公告)号：USD716809S1

公开(公告)日：2014-11-04

申请号：US29430732

申请日：2012-08-29

申请人： Toshio Ishii ,  Shigeru Kano

设计人： Toshio Ishii ,  Shigeru Kano

公开(公告)号：USD708182S1

公开(公告)日：2014-07-01

申请号：US29400562

申请日：2011-08-30

申请人： Toshio Ishii ,  Tadashi Kawasaki

设计人： Toshio Ishii ,  Tadashi Kawasaki

公开(公告)号：US07114326B2

公开(公告)日：2006-10-03

申请号：US10683446

申请日：2003-10-14

申请人： Takashi Mukaihira ,  Toshio Ishii ,  Kiyoshi Miura ,  Kazuya Kawano

发明人： Takashi Mukaihira ,  Toshio Ishii ,  Kiyoshi Miura ,  Kazuya Kawano

IPC分类号： F01N3/00

CPC分类号： F01N9/005 ,  F01N11/00 ,  F01N11/002 ,  F01N11/005 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/22 ,  F02D2041/1415 ,  F02D2200/0802 ,  Y02T10/47

摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst is estimated using the operating-state signal (for example, the flow rate of intake air or the width of a fuel injection pulse) of the engine by a diagnostic device. The conversion efficiency of the catalyst calculated from the outputs of oxygen sensors is corrected using the estimated temperature by the diagnostic device. The deterioration state of the catalyst is diagnosed on the basis of the corrected temperature by the diagnostic device.

公开(公告)号：US06520168B2

公开(公告)日：2003-02-18

申请号：US09800660

申请日：2001-03-08

申请人： Toshio Ishii ,  Yutaka Takaku

发明人： Toshio Ishii ,  Yutaka Takaku

IPC分类号： F02B7508

CPC分类号： F02D41/1441 ,  F02D41/1455 ,  F02D41/1456 ,  F02D41/1477 ,  F02D2041/1409 ,  F02D2041/1422 ,  F02D2041/1432

摘要： An air-fuel ratio correction coefficient calculating component is provided to an air-fuel ratio controller for an engine having the wide range air-fuel ratio sensor. In order to compensate for a time lag in detection of an air-fuel ratio detected by the wide range air-fuel ratio sensor from the time when a mixed gas of the air-fuel ratio is supplied to the engine, the air-fuel ratio controller includes a component for calculating an air-fuel ratio correction coefficient to control an amount of fuel supplied to the engine based on an output signal of the air-fuel ratio sensor. The air-fuel ratio correction coefficient calculating component calculates the air-fuel ratio correction coefficient based on a nonlinear calculation element. The non-linear calculation element has an ON-OFF characteristic, a neutral zone characteristic, a saturation characteristic or a characteristic combining a plurality of characteristics selected from the above-mentioned characteristics.

摘要翻译： 空燃比校正系数计算部件设置在具有宽范围空燃比传感器的发动机的空燃比控制装置中。 为了补偿从空燃比的混合气体向发动机供给时的宽范围空燃比传感器检测出的空燃比的检测时间滞后，空燃比 控制器包括用于根据空燃比传感器的输出信号计算空燃比校正系数以控制供给发动机的燃料量的部件。 空燃比校正系数计算部件基于非线性计算元件来计算空燃比校正系数。 非线性计算元件具有ON-OFF特性，中性区特性，饱和特性或组合从上述特性中选出的多个特性的特性。

公开(公告)号：US06324836B1

公开(公告)日：2001-12-04

申请号：US09592852

申请日：2000-06-12

申请人： Shinji Nakagawa ,  Toshio Ishii ,  Yutaka Takaku ,  Minoru Ohsuga ,  Hiroyuki Takamura

发明人： Shinji Nakagawa ,  Toshio Ishii ,  Yutaka Takaku ,  Minoru Ohsuga ,  Hiroyuki Takamura

IPC分类号： F01N300

CPC分类号： F02D41/1479 ,  F02D41/1441 ,  F02D41/1456

摘要： If the output of an O2 sensor located downstream of a catalyst deviates from a predetermined range, the air-to-fuel ratio upstream of the catalyst is over-corrected to be a leaner value or a richer value beyond the predetermined purification-efficiency range when the output of the O2 sensor downstream of the catalyst indicates rich or lean, respectively, so that the output of the O sensor downstream of the catalyst returns within a predetermined range as soon as possible.

摘要翻译： 如果位于催化剂下游的O2传感器的输出偏离预定范围，则催化剂上游的空燃比被过度校正为超过预定净化效率范围的更稀的值或更丰富的值， 催化剂下游的O 2传感器的输出分别表示浓或稀，使得催化剂下游的O传感器的输出尽可能快地返回到预定范围内。

公开(公告)号：US6092368A

公开(公告)日：2000-07-25

申请号：US808834

申请日：1997-02-28

申请人： Toshio Ishii ,  Toshio Manaka ,  Yutaka Takaku ,  Kiyoshi Miura

发明人： Toshio Ishii ,  Toshio Manaka ,  Yutaka Takaku ,  Kiyoshi Miura

IPC分类号： G01N27/409 ,  F01N3/00 ,  F01N3/20 ,  F01N11/00 ,  G01M15/04 ,  G01N27/26

CPC分类号： F01N11/00 ,  F01N2550/02 ,  Y02T10/47

摘要： In a diagnostic system for an exhaust gas purifying apparatus in an internal combustion engine, such as a diagnostic system suitable for evaluating the exhaust gas purifying performance of a specific component, as an exhaust gas component concentration corresponding to an operating condition of the engine or an operating condition of the catalyst is detected using an exhaust gas component system, and the evaluation and diagnosis of the exhaust gas purifying apparatus are conducted on the basis of the thus-detected value directly or after subjecting it to an integral processing. With such a diagnostic system, it is not necessary to dispose a sensor upstream of the catalyst in the exhaust gas purifying apparatus, for diagnosis of the catalyst, thus permitting the system to be less expensive, highly durable and afford a high diagnostic accuracy according to operating conditions.

摘要翻译： 在内燃机的排气净化装置的诊断系统中，例如适用于评价特定部件的排气净化性能的诊断系统，作为与发动机的运转状态对应的排气成分浓度， 使用废气成分系统检测催化剂的运转状态，并且基于这样检测的值直接进行排气净化装置的评价和诊断，或对其进行整体处理。 通过这样的诊断系统，不需要在废气净化装置中将催化剂上游设置在催化剂的诊断中，从而允许系统更便宜，高度耐用，并且根据 运行条件。