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公开(公告)号：US10473049B2
公开(公告)日：2019-11-12
申请号：US14763566
申请日：2013-01-29
Applicant: Go Hayashita , Keiichiro Aoki
Inventor： Go Hayashita , Keiichiro Aoki
IPC: F02D41/14 , G01N27/406 , G01N27/403 , G01N27/407
Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio.
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公开(公告)号：US10352263B2
公开(公告)日：2019-07-16
申请号：US13810139
申请日：2010-07-15
Applicant: Yasuhiro Koshi , Keiichiro Aoki
Inventor： Yasuhiro Koshi , Keiichiro Aoki
Abstract: A control apparatus comprising an air-fuel ratio sensor disposed between the exhaust gas aggregated portion and the three-way catalyst, and which outputs an output value corresponding to an amount of oxygen and an amount of unburnt substances that has reached the exhaust-gas-side electrode layer via the porous; an actual detected air-fuel ratio obtaining section which obtains an actual detected air-fuel ratio by converting an actual output value of the air-fuel ratio sensor into an air-fuel ratio; and an instructed fuel injection amount calculation section which corrects the amount of the fuel injected from a plurality of the fuel injection valves so that the actual detected air-fuel ratio coincides with a target air-fuel ratio; and an air-fuel ratio imbalance indicating value obtaining section which obtains an air-fuel ratio imbalance indicating value which becomes larger as a degree of a non-uniformity among a plurality of the cylinders of cylinder-by-cylinder air-fuel ratios.
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公开(公告)号：US09528419B2
公开(公告)日：2016-12-27
申请号：US13979730
申请日：2011-02-01
Applicant: Keiichiro Aoki
Inventor： Keiichiro Aoki
CPC classification number: F01N11/00 , F02D41/1466 , F02D41/1494 , F02D41/2441 , F02D41/2474
Abstract: Disclosed is a method for correcting characteristic variation of a PM sensor and improving detection accuracy of the sensor. The PM sensor has a pair of electrodes for capturing the PM in an exhaust gas, and a sensor output changes in accordance with a captured amount of the PM. If the sensor output gets close to a saturated state, the PM combustion control for combusting and removing the PM is executed. If a zero-point output of the PM sensor is to be corrected, first, a sensor output at a point of time when predetermined time required for combustion of the PM has elapsed after electrical conduction to the heater is started by the PM combustion control is obtained. Then, the sensor output at an arbitrary point of time is corrected. As a result, correction of the sensor can be made smoothly by using existing PM combustion control.
Abstract translation: 公开了一种用于校正PM传感器的特性变化并提高传感器的检测精度的方法。 PM传感器具有用于捕获废气中的PM的一对电极，并且传感器输出根据PM的捕获量而变化。 如果传感器输出接近于饱和状态，则执行用于燃烧和去除PM的PM燃烧控制。 如果要校正PM传感器的零点输出，首先，通过PM燃烧控制开始通过加热器的导通之后经过了PM的燃烧所需的预定时间的时间点的传感器输出 获得。 然后，校正任意时间点的传感器输出。 结果，可以通过使用现有的PM燃烧控制来平稳地校正传感器。
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4.发明申请公开(公告)号：US20160097732A1
公开(公告)日：2016-04-07
申请号：US14889230
申请日：2014-05-05
Applicant: Keiichiro AOKI , Kazuhiro WAKAO
Inventor： Keiichiro AOKI , Kazuhiro WAKAO
CPC classification number: G01N27/22 , F02D19/0623 , F02D19/0634 , F02D19/084 , F02D41/0025 , F02D41/222 , F02D2200/0611 , G01N27/221 , G01N33/22 , G01N33/2852 , Y02T10/36 , Y02T10/40
Abstract: An abnormality determination device is applied to an electrostatic capacitance type fuel property sensor that has a sensing section that senses an electrostatic capacitance of a fuel to be detected. The abnormality determination device of the fuel property sensor acquires a first output that is an output when a predetermined voltage is applied to the sensing section and a second output that is an output when a voltage is not applied to the sensing section. The acquired first output and second output are compared and whether or not the fuel property sensor is abnormal is determined.
Abstract translation: 异常判定装置被应用于具有检测要检测的燃料的静电电容的检测部的静电电容型燃料特性传感器。 燃料特性传感器的异常判定装置取得作为向检测部施加规定电压时的输出的第一输出和作为不向感测部施加电压的输出的第二输出。 比较所获取的第一输出和第二输出，并确定燃料特性传感器是否异常。
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公开(公告)号：US20160017829A1
公开(公告)日：2016-01-21
申请号：US14763566
申请日：2013-01-29
Applicant: Go HAYASHITA , Keiichiro AOKI
Inventor： Go HAYASHITA , Keiichiro AOKI
IPC: F02D41/14
CPC classification number: F02D41/1454 , F02D41/1401 , F02D41/1441 , F02D41/1456 , G01N27/403 , G01N27/4065 , G01N27/4076
Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio. When the air/fuel ratio of exhaust gas is to be detected by the air/fuel ratio sensor, the applied voltage at the air/fuel ratio sensor is fixed at a constant voltage, said constant voltage being different to the voltage at which the output current reaches zero when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio, and being the voltage at which the output current reaches zero when the exhaust air/fuel ratio is different to the stoichiometric air/fuel ratio. Thus provided is a control device for an internal combustion engine that uses an air/fuel ratio sensor capable of detecting an absolute value for the air/fuel ratio of exhaust gas even if the air/fuel ratio of the exhaust gas is not the stoichiometric air/fuel ratio.
Abstract translation: 该内燃机的控制装置配备有：空燃比传感器; 以及根据空燃比传感器的输出来控制内燃机的发动机控制装置。 空气/燃料比传感器被配置为使得输出电流达到零的施加电压根据排气/燃料比而变化，并且如果当空气/燃料比传感器的施加电压增加时，输出电流增加 排气/燃料比是理论空燃比。 当空燃比传感器检测排气的空气/燃料比时，将空气/燃料比传感器的施加电压固定为恒定电压，所述恒定电压与输出的电压不同 当排气/燃料比是化学计量空气/燃料比时，当排气/燃料比不同于理论空燃比时，电流达到零时，电流达到零。 因此，即使废气的空气/燃料比不是化学计量空气，也可以使用能够检测废气的空气/燃料比的绝对值的空气/燃料比传感器的内燃机的控制装置 /燃料比。
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Patent Agency Ranking
公开(公告)号：US20150337752A1
公开(公告)日：2015-11-26
申请号：US14441681
申请日：2013-05-24
Applicant: Keiichiro AOKI , Go HAYASHITA
Inventor： Keiichiro AOKI , Go HAYASHITA
IPC: F02D41/14
CPC classification number: F02D41/1454 , F02D41/1456 , G01N27/4065 , G01N27/4072
Abstract: A sensor for detecting oxygen concentration in exhaust gas or an air-fuel ratio provided with a solid electrolyte body, an exhaust gas side electrode being disposed on one side of the solid electrolyte body and being in contact with the exhaust gas, an atmosphere side electrode being disposed on the other side of the solid electrolyte body and being in contact with the atmosphere, and an electric circuit applying a reference voltage between these electrodes is arranged in an engine exhaust passage. The sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio has a characteristic in which an output current continues to increase without having a limiting current region when the voltage applied between the electrodes is increased while the air-fuel ratio is constant. The air-fuel ratio is controlled based on the output current of the sensor for detecting the oxygen concentration in the exhaust gas or the air-fuel ratio.
Abstract translation: 一种用于检测废气中的氧浓度的传感器或设置有固体电解质体的空燃比，排气侧电极设置在固体电解质体的一侧并与废气接触的气体侧电极 设置在固体电解质体的另一侧并与大气接触，并且在这些电极之间施加参考电压的电路布置在发动机排气通道中。 用于检测排气中的氧浓度的传感器或空燃比具有当电极之间施加的电压增加时输出电流继续增加而不具有限制电流区域的特性，而空燃比为 不变。 基于用于检测排气中的氧浓度的传感器的输出电流或空燃比来控制空燃比。
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公开(公告)号：US20150330323A1
公开(公告)日：2015-11-19
申请号：US14652935
申请日：2013-07-08
Applicant: Keiichiro AOKI
Inventor： Keiichiro AOKI
IPC: F02D41/14
CPC classification number: G01N27/4076 , F01N3/10 , F01N11/007 , F01N2430/06 , F01N2560/025 , F01N2900/0408 , F01N2900/1402 , F01N2900/1624 , F02D41/0295 , F02D41/123 , F02D41/1441 , F02D41/1454 , F02D41/1456 , F02D41/1475 , F02D41/1476 , F02D2200/0814 , Y02T10/47
Abstract: This control device for an internal combustion engine includes: an exhaust purification catalyst that is provided in an exhaust passage of the internal combustion engine; a downstream air-fuel ratio sensor that is provided downstream of the exhaust purification catalyst; and an air-fuel ratio control device that controls such that the air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst reaches a target air-fuel ratio. The downstream air-fuel ratio sensor is configured such that the applied voltage thereof at which the output current becomes zero decreases as the exhaust air-fuel ratio increases. If the target air-fuel ratio is richer than the reference air-fuel ratio, the voltage applied to the downstream air-fuel ratio sensor is set to a higher voltage than the voltage at which the output current becomes zero when the exhaust air-fuel ratio is the stoichiometric air-fuel ratio. If the target air-fuel ratio is leaner than the reference air-fuel ratio, the voltage applied to the downstream air-fuel ratio sensor is set to a lower voltage than the voltage at which the output current becomes zero when the exhaust air-fuel ratio is the stoichiometric air-fuel ratio. A control device for an internal combustion engine using an air-fuel ratio sensor that can reliably detect when the absolute value of the exhaust air-fuel ratio reaches a prescribed air-fuel ratio richer than the stoichiometric air-fuel ratio is thus provided.
Abstract translation: 该内燃机用控制装置具备：排气净化催化剂，其设置在内燃机的排气通路中; 设置在排气净化催化剂下游的下游空燃比传感器; 以及空气燃料比控制装置，其控制使流入所述排气净化催化剂的废气的空燃比达到目标空燃比。 下游空燃比传感器被配置为使得其输出电流为零的施加电压随着排气空燃比的增加而减小。 如果目标空燃比比参考空燃比更浓，那么施加到下游空燃比传感器的电压设定为比排气空燃比输出电流为零时的电压高 比是化学计量空燃比。 如果目标空燃比比参考空燃比更精细，那么施加到下游空燃比传感器的电压设定为比排气空燃比输出电流为零时的电压低的电压 比是化学计量空燃比。 因此，提供了一种使用空燃比传感器的内燃机的控制装置，该空燃比传感器能够可靠地检测当排气空燃比的绝对值达到比理论空燃比富于规定的空燃比时。
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8.发明授权Hydrogen detecting device and method, and internal combustion engine abnormality deciding device 有权氢气检测装置和方法以及内燃机异常判定装置公开(公告)号：US08731804B2
公开(公告)日：2014-05-20
申请号：US12668467
申请日：2008-07-09
Applicant: Keiichiro Aoki
Inventor： Keiichiro Aoki
CPC classification number: G01N27/4071 , F01N11/007 , F01N2560/024 , F01N2560/025 , F01N2560/14 , F01N2560/20 , F02D41/0085 , F02D41/1441 , F02D41/1455 , F02D41/1474 , F02D41/1495 , F02D2041/147 , Y02T10/47
Abstract: A device, which detects information about a hydrogen concentration level, includes an air-fuel ratio sensor, an air-fuel ratio controller, and a detecting portion. The detecting portion calculates either a ratio of response periods or a difference between the response periods to detect the hydrogen concentration level. One of the response periods is a period from the time the air-fuel ratio controller switches the target air-fuel ratio from rich to lean to the time the air-fuel ratio sensor detects this. The other of the response periods is a period from the time the air-fuel ratio controller switches the target air-fuel ratio from lean to rich to the time the air-fuel ratio sensor detects this. This allows the decisions of a variation between cylinders and an exhaust purifying catalyst degradation.
Abstract translation: 检测关于氢浓度水平的信息的装置包括空燃比传感器，空燃比控制器和检测部。 检测部分计算响应周期的比率或响应周期之间的差以检测氢浓度水平。 响应时段中的一个是从空燃比控制器将目标空燃比从浓稀释到空燃比传感器检测到的时间的时间段。 响应周期中的另一个是从空燃比控制器将目标空燃比从浓空燃比转换为浓的时间到空燃比传感器检测到的时间。 这允许气缸和排气净化催化剂劣化之间的变化的决定。
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公开(公告)号：US20130298537A1
公开(公告)日：2013-11-14
申请号：US13979757
申请日：2011-02-01
Applicant: Keiichiro Aoki
Inventor： Keiichiro Aoki
IPC: F01N3/023
CPC classification number: F01N3/023 , F01N2560/05 , F01N2560/20 , F02D41/1466 , F02D41/1494 , F02D41/2474
Abstract: This invention has an object to appropriately correct characteristic variation of a PM sensor and to improve detection accuracy of the sensor.The PM sensor has a pair of electrodes for capturing the PM in an exhaust gas, and a sensor output changes in accordance with a captured amount of the PM. If the sensor output gets close to a saturated state, the PM combustion control for combusting and removing the PM between the electrodes by a heater is executed.
Abstract translation: 本发明的目的是适当地校正PM传感器的特性变化并提高传感器的检测精度。 PM传感器具有用于捕获废气中的PM的一对电极，并且传感器输出根据PM的捕获量而变化。 如果传感器输出接近于饱和状态，则执行通过加热器燃烧和去除电极之间的PM的PM燃烧控制。
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公开(公告)号：US20130276431A1
公开(公告)日：2013-10-24
申请号：US13993734
申请日：2010-12-24
Applicant: Keiichiro Aoki , Takanori Sasaki , Go Hayashita
Inventor： Keiichiro Aoki , Takanori Sasaki , Go Hayashita
IPC: F01N11/00
CPC classification number: F01N11/007 , F02D41/123 , F02D41/1454 , F02D41/1476 , F02D2041/2051 , G01N27/407
Abstract: In this invention, an EMF oxygen sensor is subjected to an activation process applying unidirectional voltage between an atmosphere electrode and an exhaust electrode thereof. A control device controlling the oxygen sensor in which a voltage was applied with the atmosphere electrode being positive, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode positive, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio of the internal combustion engine was rich relative to the theoretical air-fuel ratio. Conversely, A control device controlling the oxygen sensor in which a voltage was applied to make the atmosphere electrode negative, additionally applies unidirectional voltage between the electrodes to make the atmosphere electrode negative, for example, when the oxygen sensor was used under an environment in which the air-fuel ratio was lean relative to the theoretical air-fuel ratio.
Abstract translation: 在本发明中，EMF氧传感器在气氛电极和排气电极之间进行施加单向电压的激活处理。 控制在气氛电极中施加电压的氧传感器的控制装置为正，另外在电极之间施加单向电压，使得气氛电极为正，例如当氧气传感器在空气中的环境下使用时 内燃机的燃料比相对于理论空燃比是丰富的。 相反，控制其中施加电压以使气氛电极为负的氧传感器的控制装置另外在电极之间施加单向电压，以使气氛电极为负值，例如当氧传感器在其中 空燃比相当于理论空燃比。
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