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11. 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。

12. 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。

13. 发明授权

US06723965B2 Heater control apparatus of air-fuel ratio sensor and method thereof 失效
标题翻译：空燃比传感器加热器控制装置及其方法
公开(公告)号：US06723965B2
公开(公告)日：2004-04-20
申请号：US09886222
申请日：2001-06-22
申请人： Shigeo Ohkuma , Hiroyuki Ohsaki
发明人： Shigeo Ohkuma , Hiroyuki Ohsaki
IPC分类号： H05B102
CPC分类号： F02D41/1494 , F02D41/1454 , F02D41/1496 , F02D41/187 , F02D2200/0414
摘要： According to the present invention, when controlling a heater in an air-fuel ratio sensor, a crack of sensor element due to an exhaust condensed water is certainly avoided. To this end, an element temperature is detected by measuring an impedance of the sensor element and a power supply amount to the heater for heating the sensor element is feedback controlled so that the element temperature reaches a target temperature. Here, the target temperature is set to a lower side temperature, compared to other conditions, on a condition that a wall temperature of an exhaust system is low and a water content in the exhaust is condensed in the exhaust system. Or, an initial value of the power supply amount is set corresponding to the element temperature before the start of power supply to the heater. Or, an increase component of the power supply amount is set corresponding to the element temperature, and the power supply amount to the heater is feedforward controlled so as to be increased gradually by each predetermined increase component from a predetermined initial value.
摘要翻译：根据本发明，当控制空燃比传感器中的加热器时，肯定避免了由于排出冷凝水引起的传感器元件的裂纹。为此，通过测量传感器元件的阻抗来检测元件温度，并且反馈控制用于加热传感器元件的加热器的电源量，使得元件温度达到目标温度。这里，在排气系统的壁温低且排气中的水分浓缩在排气系统中的情况下，与其他条件相比，将目标温度设定为较低的温度。或者，将供电量的初始值设定为对加热器供电开始前的元件温度。或者，对应于元件温度设定供电量的增加分量，并且对来自加热器的供电量进行前馈控制，以便从预定的初始值逐渐增加预定的增加分量。

14. 发明授权

US06576118B2 Correction device of air-fuel ratio detection apparatus 失效
标题翻译：空燃比检测装置的校正装置
公开(公告)号：US06576118B2
公开(公告)日：2003-06-10
申请号：US09778905
申请日：2001-02-08
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： G01N2741
CPC分类号： G01N27/4175
摘要： According to the present invention, there is provided: a sensor element including an oxygen concentration detection section consisting of solid electrolyte for outputting a detection signal corresponding to an oxygen concentration in a hollow chamber to which an exhaust of an internal combustion engine is introduced and an oxygen pump section for controlling an electric current to be applied to a solid electrolyte wall that divides the hollow chamber from an exhaust side of the engine so that the oxygen concentration in the hollow chamber becomes a predetermined oxygen concentration, to flow oxygen into/out of the hollow chamber; an air-fuel ratio detection circuit for outputting an air-fuel ratio detection value based on the electric current applied to the solid electrolyte wall by the oxygen pump section; and a pump current cut off circuit for cutting off the power supply to the solid electrolyte wall by the oxygen pump section, and a detection value of air-fuel ratio is corrected based on an output value of the air-fuel ratio detection circuit of when the power supply to the solid electrolyte wall by the oxygen pump section is cut off by the pump current cut off circuit, while detecting the air-fuel ratio over a wide range.
摘要翻译：根据本发明，提供一种传感器元件，其包括氧浓度检测部分，该氧浓度检测部分由固体电解质组成，用于输出对应于引入内燃机排气的中空室中的氧浓度的检测信号，氧气泵部分，用于控制施加到固体电解质壁的电流，所述固体电解质壁将中空室与发动机的排气侧分隔开，使得中空室中的氧浓度变为预定的氧浓度，以将氧气输入/ 中空室; 空燃比检测电路，用于基于由氧泵部分施加到固体电解质壁的电流输出空燃比检测值; 以及泵电流切断电路，用于通过氧气泵部切断对固体电解质壁的供电，并且基于空燃比检测电路的输出值，校正空燃比的检测值通过泵浦电流切断电路切断氧泵部分对固体电解质壁的供电，同时在宽范围内检测空燃比。

15. 发明授权

US06450159B2 Fuel vapor treatment apparatus in internal combustion engine and method thereof 失效
标题翻译：内燃机燃油蒸汽处理装置及其方法
公开(公告)号：US06450159B2
公开(公告)日：2002-09-17
申请号：US09809261
申请日：2001-03-16
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： F02M2508
CPC分类号： F02D41/0045 , F02D41/0042 , F02D2041/1433
摘要： Based upon a purge air quantity supplied via a purge control valve to an intake system of an engine, an intake air amount into the engine, a fuel injection quantity into the engine, and an air-fuel ratio of the combustion mixture, a fuel vapor concentration is calculated as fuel vapor concentration=(intake air amount+purge air quantity air-fuel ratio×fuel injection quantity)/(the air-fuel ratio+1).
摘要翻译：基于通过净化控制阀向发动机的进气系统供给的吹扫空气量，进入发动机的进气量，发动机的燃料喷射量和燃烧混合物的空燃比，燃料蒸气浓度计算为

16. 发明授权

US06321728B1 Apparatus and method for diagnosing faults of fuel vapor treatment unit 失效
标题翻译：用于诊断燃油蒸汽处理装置故障的装置和方法
公开(公告)号：US06321728B1
公开(公告)日：2001-11-27
申请号：US09598412
申请日：2000-06-21
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： F02M3304
CPC分类号： F02M25/0809
摘要： In an apparatus and method where the interior of a fuel vapor treatment unit of an internal combustion engine is closed off and pressurized air is supplied, so that the presence of a leak of fuel vapor is diagnosed based on a change condition of the pressure inside the fuel vapor treatment unit, the construction is such that the diagnosis is permitted on the proviso that a condition for close to engine start time is detected. As a result, the influence of heat from the engine after the engine has stopped, and the influence of vibration due to the road surface when the vehicle is travelling and of atmospheric pressure changes due to differences in altitude can be simultaneously avoided, so that erroneous diagnosis due to these influences can be prevented, and fault diagnosis accuracy thus improved.
摘要翻译：在内燃机的燃料蒸汽处理单元的内部被封闭并且供给加压空气的设备和方法中，基于内部的压力的变化条件来诊断出燃料蒸气泄漏的存在燃料蒸汽处理单元，其结构是允许在检测到接近发动机起动时间的条件的条件下进行诊断。结果，能够同时避免发动机停止后的发动机的热量，车辆行驶时由路面产生的振动和由于高度差引起的大气压力变化的影响，可以防止由于这些影响的诊断，从而提高故障诊断精度。

17. 发明授权

US5517073A Pressure sensor 失效
标题翻译：压力传感器
公开(公告)号：US5517073A
公开(公告)日：1996-05-14
申请号：US277026
申请日：1994-07-19
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： G01L9/08 , G01D3/036 , G01D5/24 , G01L9/00 , G01L19/00 , G01L23/10 , H01L41/08
CPC分类号： G01D5/24 , G01D3/036 , G01L23/10 , G01L9/008 , G01L9/085
摘要： A pressure sensor comprises a movable structure which is movable in accordance with a pressure applied thereto. A piezoelectric transducer is employed against which a pressure is applied when the movable structure is moved. The transducer has opposed electrodes between which a voltage is generated when the transducer is pressed. The capacitance between the opposed electrodes increases with increase of temperature. A dielectric member is arranged in the vicinity of the piezoelectric transducer. The dielectric member has opposed electrodes the capacitance between which decreases with increase of temperature. The piezoelectric transducer and the dielectric member are electrically connected in series.
摘要翻译：压力传感器包括可根据施加到其上的压力移动的可移动结构。使用压电换能器，当可移动结构移动时，施加压力。换能器具有相对的电极，当换能器被按压时，其间产生电压。相对电极之间的电容随着温度的升高而增加。电介质构件设置在压电换能器附近。电介质构件具有相对的电极，其间的电容随着温度的升高而降低。压电换能器和电介质元件串联电连接。

18. 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。

19. 发明申请

US20060070607A1 Exhaust gas sensor activation judgment and air fuel ratio control system/method 失效
标题翻译：废气传感器激活判断和空燃比控制系统/方法
公开(公告)号：US20060070607A1
公开(公告)日：2006-04-06
申请号：US11227916
申请日：2005-09-16
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： F02D41/00
CPC分类号： F02D41/1496 , F02D41/064 , F02D41/1455
摘要： An air fuel ratio control system includes an exhaust gas sensor to sense an oxygen concentration in an exhaust passage of an internal combustion engine, and a controller. The controller is configured to judge that the exhaust gas sensor is in an active state, by monitoring a decrease of an output of the exhaust gas sensor from a level greater than a first predetermined value, to a level smaller than or equal to the predetermined first predetermined value, and to allow the air fuel ratio control when the exhaust gas sensor is judged to be in the active state.
摘要翻译：空燃比控制系统包括用于感测内燃机的排气通道中的氧浓度的排气传感器和控制器。控制器被配置为通过将废气传感器的输出的降低从大于第一预定值的水平监视到小于或等于预定的第一预定值的水平来判断废气传感器处于活动状态并且当排气传感器被判断为处于活动状态时允许空燃比控制。

20. 发明申请

US20050021214A1 Exhaust component concentration detecting apparatus for internal combustion engine and heating method of exhaust component concentration detector 审中-公开
标题翻译：内燃机用排气成分浓度检测装置及排气成分浓度检测器的加热方法
公开(公告)号：US20050021214A1
公开(公告)日：2005-01-27
申请号：US10895369
申请日：2004-07-21
申请人： Shigeo Ohkuma
发明人： Shigeo Ohkuma
IPC分类号： G01N27/409 , F01N3/00 , F01N9/00 , F01N13/00 , F01N99/00 , F02D41/14 , F02D45/00 , G06F19/00
CPC分类号： F02D41/1494 , F01N9/00 , F01N2560/025 , F01N2560/20 , Y02T10/47
摘要： When a rotation speed of an internal combustion engine is less than a first threshold and also an intake air amount of the internal combustion engine is less than a second threshold, it is judged that a low temperature condition of an exhaust pipe is established, to lower an applied voltage to a heating device of an exhaust component concentration detector equipped in the exhaust pipe, when the low temperature condition continues for a predetermined time or above.
摘要翻译：当内燃机的旋转速度小于第一阈值且内燃机的吸入空气量小于第二阈值时，判断出排气管的低温状态成立，降低当低温条件持续预定时间或更长时间时，施加电压到装备在排气管中的排气成分浓度检测器的加热装置。

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