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1. 发明授权

US07836758B2 Deterioration diagnosis system for an air-fuel ratio sensor 有权
标题翻译：空燃比传感器恶化诊断系统
公开(公告)号：US07836758B2
公开(公告)日：2010-11-23
申请号：US11869803
申请日：2007-10-10
申请人： Toshihiro Aono , Takahumi Ohwada , Akira Kiyomura , Masanobu Ohsaki , Seiichi Ohtani , Shigeo Ohkuma
发明人： Toshihiro Aono , Takahumi Ohwada , Akira Kiyomura , Masanobu Ohsaki , Seiichi Ohtani , Shigeo Ohkuma
IPC分类号： G01M15/10
CPC分类号： F01N11/007 , F01N2560/025 , F01N2900/0422 , F02D41/123 , F02D41/1456 , F02D41/1495 , Y02T10/47
摘要： A deterioration diagnosis system for an air fuel sensor mounted to an exhaust pipe of an internal combustion engine. The air fuel sensor determines a mixture ratio of air and fuel fed into the internal combustion engine. In the system, an inclination of an output signal of the air-fuel ratio sensor is calculated; variance of the inclination is calculated; deterioration of the air-fuel ratio sensor is determined based on the variance of the inclination.
摘要翻译：一种安装在内燃机的排气管上的空气燃料传感器的劣化诊断系统。空气燃料传感器确定供给到内燃机的空气和燃料的混合比。在该系统中，计算空燃比传感器的输出信号的倾斜度; 计算倾斜的方差; 基于倾斜的变化来确定空燃比传感器的劣化。

2. 发明申请

US20080271435A1 Deterioration Diagnosis System for an Air-Fuel Ratio Sensor 有权
标题翻译：空燃比传感器恶化诊断系统
公开(公告)号：US20080271435A1
公开(公告)日：2008-11-06
申请号：US11869803
申请日：2007-10-10
申请人： Toshihiro AONO , Takahumi Ohwada , Akira Kiyomura , Masanobu Ohsaki , Seiichi Ohtani , Shigeo Ohkuma
发明人： Toshihiro AONO , Takahumi Ohwada , Akira Kiyomura , Masanobu Ohsaki , Seiichi Ohtani , Shigeo Ohkuma
IPC分类号： F01N3/00
CPC分类号： F01N11/007 , F01N2560/025 , F01N2900/0422 , F02D41/123 , F02D41/1456 , F02D41/1495 , Y02T10/47
摘要： A deterioration diagnosis system for an air fuel sensor mounted to an exhaust pipe of an internal combustion engine. The air fuel sensor determines a mixture ratio of air and fuel fed into the internal combustion engine. In the system, an inclination of an output signal of the air-fuel ratio sensor is calculated; variance of the inclination is calculated; deterioration of the air-fuel ratio sensor is determined based on the variance of the inclination.
摘要翻译：一种安装在内燃机的排气管上的空气燃料传感器的劣化诊断系统。空气燃料传感器确定供给到内燃机的空气和燃料的混合比。在该系统中，计算空燃比传感器的输出信号的倾斜度; 计算倾斜的方差; 基于倾斜的变化来确定空燃比传感器的劣化。

3. 发明授权

US07017567B2 Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor 失效
公开(公告)号：US07017567B2
公开(公告)日：2006-03-28
申请号：US10806183
申请日：2004-03-23
申请人： Hajime Hosoya , Koji Takahashi , Shigeo Ohkuma
发明人： Hajime Hosoya , Koji Takahashi , Shigeo Ohkuma
IPC分类号： F02D45/00
CPC分类号： G01N27/4067 , F02D41/1494
摘要： A device according to the present invention is provided with element temperature measurement voltage application circuit for temporarily applying a predetermined voltage for element temperature measurement to a sensor element of an air-fuel ratio sensor equipped to an exhaust system of an internal combustion engine, first sensor output reading circuit for reading in a sensor output just before applied with the voltage, and second sensor output reading circuit for reading in a sensor output being applied with the voltage, wherein the element temperature of the air-fuel ratio sensor is estimated based on the sensor output just before applied with the voltage and the sensor output being applied with the voltage. Further, during internal resistance measurement of the sensor element of the air-fuel ratio sensor equipped to the exhaust system of the internal combustion engine, a voltage applied to the heater for heating the sensor element is maintained to be constant.

4. 发明授权

US06712054B2 Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor 失效
标题翻译：用于测量空燃比传感器元件温度的装置和方法，以及用于控制空燃比传感器加热器的装置和方法
公开(公告)号：US06712054B2
公开(公告)日：2004-03-30
申请号：US09853872
申请日：2001-05-14
申请人： Hajime Hosoya , Koji Takahashi , Shigeo Ohkuma
发明人： Hajime Hosoya , Koji Takahashi , Shigeo Ohkuma
IPC分类号： F02D4500
CPC分类号： G01N27/4067 , F02D41/1494
摘要： A device according to the present invention is provided with element temperature measurement voltage application circuit for temporarily applying a predetermined voltage for element temperature measurement to a sensor element of an air-fuel ratio sensor equipped to an exhaust system of an internal combustion engine, first sensor output reading circuit for reading in a sensor output just before applied with the voltage, and second sensor output reading circuit for reading in a sensor output being applied with the voltage, wherein the element temperature of the air-fuel ratio sensor is estimated based on the sensor output just before applied with the voltage and the sensor output being applied with the voltage. Further, during internal resistance measurement of the sensor element of the air-fuel ratio sensor equipped to the exhaust system of the internal combustion engine, a voltage applied to the heater for heating the sensor element is maintained to be constant.
摘要翻译：根据本发明的装置设置有元件温度测量电压施加电路，用于将元件温度测量的预定电压临时施加到装备到内燃机的排气系统的空燃比传感器的传感器元件，第一传感器输出读取电路，用于在施加电压之前读取传感器输出;以及第二传感器输出读取电路，用于读取施加有电压的传感器输出，其中基于空燃比传感器的元件温度被估计在施加电压之前的传感器输出和传感器输出被施加电压。此外，在内燃机的排气系统的空燃比传感器的传感器元件的内阻检测中，施加到用于加热传感器元件的加热器的电压保持恒定。

5. 发明授权

US06609510B2 Device and method for controlling air-fuel ratio of internal combustion engine 失效
公开(公告)号：US06609510B2
公开(公告)日：2003-08-26
申请号：US10003534
申请日：2001-12-06
申请人： Koji Takahashi , Shigeo Ohkuma
发明人： Koji Takahashi , Shigeo Ohkuma
IPC分类号： F02D4114
CPC分类号： F02D41/0295 , F01N2570/16 , F02D41/1454 , F02D41/182 , F02D2200/0814
摘要： An intake air quantity detected by an air flow meter is corrected based on a change speed of an engine load and on a change speed of an engine rotation speed, and an oxygen quantity stored in a catalytic converter is estimated based on the corrected intake air quantity and an oxygen concentration in the exhaust gas.

6. 发明授权

US06450158B2 Air-fuel ratio feedback control apparatus of internal combustion engine and method thereof 失效
标题翻译：内燃机的空燃比反馈控制装置及其方法
公开(公告)号：US06450158B2
公开(公告)日：2002-09-17
申请号：US09805946
申请日：2001-03-15
申请人： Koji Takahashi , Shigeo Ohkuma , Hajime Hosoya , Hidekazu Yoshizawa
发明人： Koji Takahashi , Shigeo Ohkuma , Hajime Hosoya , Hidekazu Yoshizawa
IPC分类号： F02D4114
CPC分类号： F02D41/1473 , F02D41/1403 , F02D41/1456
摘要： In a sliding mode control for restraining an air-fuel ratio state on a switching line set on a phase plane shown by a deviation between an actual air-fuel ratio and a target air fuel ratio, and a differential value of the deviation, an inclination of the switching line is made small, when the smaller an intake air quantity is, the longer a detection delay time of the air-fuel ratio is.
摘要翻译：在实际空燃比和目标空燃比之间的偏差所示的在相位平面上设置的切换线上的空燃比状态和偏差的微分值的滑动模式控制中，，当进气量越小，空燃比的检测延迟时间越长。

7. 发明授权

US06182642B2 Leak detection of emission control system 失效
标题翻译：排放控制系统泄漏检测
公开(公告)号：US06182642B2
公开(公告)日：2001-02-06
申请号：US09439992
申请日：1999-11-15
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： F02M3302
CPC分类号： F02M25/0818
摘要： A leak detection apparatus for an evaporative emission control system is provided. By the apparatus, a current through a motor driven air pump is detected and determined as a judgment level when the air pump is ON and a directional control valve is in a position of connecting a fresh air inlet of a canister to an atmospheric vent, for thereby allowing air from the air pump to pass through a reference orifice of a bypass conduit and thereafter be released to the open air through the directional control valve. Then, it is established a condition in which the air pump is ON and the directional control valve is in a position of connecting the fresh air inlet to an outlet of the air pump so that air from the air pump passes through the directional control valve and the fresh air inlet of the canister and is supplied to the purge line, and this condition is maintained for a predetermined time. The predetermined time is made shorter as the temperature of fuel detected by a fuel temperature sensor is higher and a tank residual detected by a tank residual sensor is larger. At a measurement timing after lapse of the predetermined time, the current through the air pump is measured and determined as a leak level. When the leak level is lower than the judgment level, it is determined that a leak is present in the evaporative emission control system, i.e., a leak is present in a fuel vapor flow passage extending from a fuel tank to a purge control valve by way of the canister. A method of detecting a leak in an evaporative emission control system is also provided.
摘要翻译：提供了一种用于蒸发排放控制系统的泄漏检测装置。通过该装置，当气泵接通并且方向控制阀处于将罐的新鲜空气入口连接到大气排气口的位置时，检测并确定通过电动机驱动的空气泵的电流作为判断水平，并且确定从而允许来自空气泵的空气通过旁路管道的参考孔，然后通过方向控制阀释放到露天。然后，建立了空气泵接通的状态，方向控制阀处于将新鲜空气入口与空气泵的出口连接的位置，使得来自空气泵的空气通过方向控制阀，罐的新鲜空气入口被供应到净化管线，并且该条件保持预定时间。当由燃料温度传感器检测的燃料的温度较高并且由罐残留传感器检测到的罐残余物较大时，预定时间变短。在经过预定时间之后的测量定时，测量通过空气泵的电流并将其确定为泄漏水平。当泄漏水平低于判断水平时，确定在蒸发排放控制系统中存在泄漏，即，在从燃料箱延伸到排气控制阀的燃料蒸汽流动通道中存在泄漏的罐子。还提供了一种检测蒸发排放控制系统中的泄漏的方法。

8. 发明授权

US5850458A Apparatus and method for actively reducing noise in vehicular passengers compartment 失效
标题翻译：积极减少车辆乘客车厢噪音的装置及方法
公开(公告)号：US5850458A
公开(公告)日：1998-12-15
申请号：US429500
申请日：1995-04-26
申请人： Naoki Tomisawa , Shigeo Ohkuma
发明人： Naoki Tomisawa , Shigeo Ohkuma
IPC分类号： G01F9/00 , F02D45/00 , F02M35/12 , G10K11/178 , A61F11/06
CPC分类号： F02M35/125 , F02M35/1294 , F02M35/161 , G10K11/1786 , G10K2210/121 , G10K2210/1282 , G10K2210/3033
摘要： In an apparatus and method for actively reducing air intake noise of an air intake system of a vehicular internal combustion engine, a sound wave having approximately the same amplitude, and a phase shifted by 180.degree. from the air intake sound wave, is generated from a sound wave generator to cancel the air intake sound, which is unpleasant to vehicular occupants.
摘要翻译：在用于主动地减少车辆内燃机的进气系统的进气噪声的装置和方法中，具有大致相同幅度的声波和从进气声波偏移180°的声音从声波发生器取消进气声音，这对车辆乘客是不愉快的。

9. 发明申请

US20090157282A1 Air-Fuel Ratio Control Apparatus by Sliding Mode Control of Engine 审中-公开
标题翻译：发动机滑模控制的空燃比控制装置
公开(公告)号：US20090157282A1
公开(公告)日：2009-06-18
申请号：US12261876
申请日：2008-10-30
申请人： Seiji Asano , Yasukuni Kubo , Takayuki Ohbu , Keiichi Takayanagi , Shigeo Ohkuma , Shunji Fukui , Junichi Noda
发明人： Seiji Asano , Yasukuni Kubo , Takayuki Ohbu , Keiichi Takayanagi , Shigeo Ohkuma , Shunji Fukui , Junichi Noda
IPC分类号： F02D41/00
CPC分类号： F02D41/1403 , F02D41/1455 , F02D2041/1422 , F02D2041/1431 , G05B13/0255
摘要： Factors affecting the response time of a transfer system from the combustion of injected fuel to the detection of its oxygen concentration include a stroke delay time due to an engine speed, the dependence of an LAF sensor response time on an exhaust gas flow rate, a response time change of the LAF sensor due to its deterioration with time, and the like. If a hyperplane of the sliding mode is fixed without considering the above-mentioned factors affecting the response time of the transfer system, an overshoot or oscillation of a feedback system may occur at low speeds of the engine even if preferable feedback responsiveness can be achieved, for example, at high speeds of the engine. This results in aggravated exhaust emissions, degraded drivability due to torque fluctuations, and fluctuations in idle speed.A hyperplane used in a control system for providing feedback control of an air-fuel ratio through sliding mode control is varied based on the factors affecting the response time of the control system within a range in which the control system can be stabilized.
摘要翻译：影响转移系统从燃料燃烧到其氧浓度的响应时间的因素包括由于发动机转速引起的冲程延迟时间，LAF传感器响应时间对废气流量的依赖性，响应 LAF传感器由于其随时间而劣化的时间变化等。如果在考虑到影响传送系统的响应时间的上述因素的情况下固定滑模的超平面，即使可以实现优选的反馈响应，也可能在发动机的低速下发生反馈系统的过冲或振荡，例如，在发动机的高速度。这导致严重的废气排放，由于扭矩波动导致的驾驶性能下降以及怠速速度的波动。在控制系统中用于通过滑动模式控制提供空燃比的反馈控制的超平面基于影响控制系统在其中可以稳定控制系统的范围内的响应时间的因素而变化。

10. 发明授权

US06918385B2 Air-fuel ratio detecting apparatus of engine and method thereof 失效
标题翻译：发动机空燃比检测装置及其方法
公开(公告)号：US06918385B2
公开(公告)日：2005-07-19
申请号：US10290250
申请日：2002-11-08
申请人： Shigeo Ohkuma , Futoshi Ichiyanagi
发明人： Shigeo Ohkuma , Futoshi Ichiyanagi
IPC分类号： G01D3/028 , F02D41/14 , F02D45/00 , G01D3/02 , G01N27/409
CPC分类号： F02D41/1486 , F02D41/1456 , F02D41/1496
摘要： A temperature of an oxygen concentration detector generating an electromotive force according to a difference between oxygen concentration in an engine exhaust gas and oxygen concentration in the atmosphere, is detected, and coefficients in a transformation for converting the electromotive force to a value having a characteristic linear to an air-fuel ratio is modified according to the temperature.
摘要翻译：检测根据发动机排气中的氧浓度与大气中的氧浓度之间的差产生电动势的氧浓度检测器的温度，将电动势变换为具有特征线性的值的变换中的系数空燃比根据温度而变化。

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