公开(公告)号：US06494087B2

公开(公告)日：2002-12-17

申请号：US09054410

申请日：1998-04-03

申请人： Gaku Hatano ,  Yasunari Seki ,  Yuji Fujiki ,  Kojiro Tsutsumi ,  Masahiro Yamada ,  Hisashi Daicho

发明人： Gaku Hatano ,  Yasunari Seki ,  Yuji Fujiki ,  Kojiro Tsutsumi ,  Masahiro Yamada ,  Hisashi Daicho

IPC分类号： G01M1500

CPC分类号： G01M15/11 ,  F02N11/0814

摘要： A misfire state discrimination system of an internal combustion engine, which determines the occurrence of misfire under engine operating conditions that make misfire determination possible and counts the number of misfires to compare with a reference value. The misfire state of the engine is discriminated based on the result of comparison. In the system, when the engine operation moves from the conditions that makes the misfire determination possible, the count is saved and is counted up from the count when the engine operation returns to the condition. The saved count is also retained when the engine is stopped. Similarly, the number of combustion during which the determination of misfire occurrence is made is counted and the count is saved. This arrangement enables a rapid and accurate discrimination of the misfire state of the engine.

摘要翻译： 一种内燃机的失火状态判别系统，其确定可以进行失火判定的发动机运行状态下发生失火的发生，并且计算出失火次数与基准值相比较。 基于比较的结果来判别发动机的失火状态。 在该系统中，当发动机操作从使得失火判定成为可能的状态移动时，计数被保存，并且当发动机操作返回到该状态时从计数开始计数。 当发动机停止时，保存的计数也保留。 类似地，计算进行发生失火发生的确定的燃烧次数并节省计数。 这种布置使得能够快速且准确地区分发动机的失火状态。

公开(公告)号：US5396873A

公开(公告)日：1995-03-14

申请号：US168383

申请日：1993-12-17

申请人： Masayoshi Yamanaka ,  Hiroshi Maruyama ,  Masataka Chikamatsu ,  Yasunari Seki ,  Kenichi Maeda ,  Kazutomo Sawamura

发明人： Masayoshi Yamanaka ,  Hiroshi Maruyama ,  Masataka Chikamatsu ,  Yasunari Seki ,  Kenichi Maeda ,  Kazutomo Sawamura

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0809

摘要： An evaporative fuel-processing system includes a first control valve arranged in a charging passage connecting between a fuel tank and a canister for adsorbing evaporative fuel generated from the fuel tank, a second control valve arranged in a purging passage connecting between the canister and an intake passage of the engine, a third control valve arranged in an air inlet port of the canister, and a system internal pressure sensor for detecting pressure within the system. The system is checked for a leak by monitoring a value of the pressure detected by the sensor after the system is negatively pressurized by closing the third control valve and opening the second control valve. The sensor is provided at a location upstream of the first control valve, and the first control valve is closed to detect a value of the pressure or a change thereof. Abnormality determination is carried out based on the detected value of the pressure. Alternatively, all of the above valves are closed in the negatively-pressurized state of the system to detect a first amount of change in the pressure, and then the first control valve alone is opened to detect a second amount of change in the pressure. Abnormality determination can be carried out based on the first and second amounts of change in the pressure, or by comparing a value of the pressure detected when the first and second valves are closed after negative pressurization with a value of the pressure detected after the first control valve is opened.

摘要翻译： 蒸发燃料处理系统包括：第一控制阀，其布置在连接在燃料箱和用于吸附从燃料箱产生的蒸发燃料的罐之间的充电通道中的第二控制阀;布置在连接在罐和进气口之间的清洗通道中的第二控制阀 发动机通过，布置在罐的进气口中的第三控制阀，以及用于检测系统内的压力的系统内部压力传感器。 通过关闭第三控制阀并打开第二控制阀，通过监视系统负压后由传感器检测到的压力值，来检查系统的泄漏。 传感器设置在第一控制阀的上游位置，第一控制阀关闭以检测压力值或其变化。 基于检测到的压力值进行异常判定。 或者，所有上述阀在系统的负压状态下关闭，以检测第一压力变化量，然后单独打开第一控制阀以检测第二压力变化量。 可以基于第一和第二压力变化量进行异常判定，或者通过将在第一和第二控制之后检测到的压力值与负压之后的第一和第二阀关闭时的压力值进行比较 阀打开。

公开(公告)号：US4960094A

公开(公告)日：1990-10-02

申请号：US419575

申请日：1989-10-10

申请人： Yuzuru Koike ,  Yukio Miyashita ,  Yoshiaki Akimoto ,  Yasunari Seki ,  Isao Yahata

发明人： Yuzuru Koike ,  Yukio Miyashita ,  Yoshiaki Akimoto ,  Yasunari Seki ,  Isao Yahata

IPC分类号： F02D13/02 ,  F02D41/34 ,  F02P5/152

CPC分类号： F02D13/0203 ,  F02D35/027 ,  F02D41/345 ,  F02P5/152 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/46

摘要： A knocking control system for an internal combustion engine with inlet valves and exhaust valves having valve timing thereof controlled depending on operating conditions of the engine. It is determined whether or not knocking has occurred in the engine on the basis of a detection parameter indicative of knocking and at least one discrimination parameter. The operation of the engine is controlled by the use of at least one control parameter in response to the determination result, so as to eleminate knocking. The values of the discrimination and control parameters are selected in accordance with the actual valve timing. When abnormality in the valve timing control is detected, the valve timing is held at predetermined valve timing irrespective of engine operating conditions, and values of the at least one discriminating parameter and the at least one control parameter are selected, which correspond to the held predetermined valve timing. Alternatively, when abnormality in the valve timing control is detected, the above control of the engine operation is inhibited.

摘要翻译： 具有入口阀和排气阀的内燃机的爆震控制系统，其具有根据发动机的运行条件控制其气门正时。 基于指示爆震的检测参数和至少一个判别参数来确定发动机中是否发生了爆震。 通过响应于确定结果使用至少一个控制参数来控制发动机的操作，以便敲击。 鉴别和控制参数的值根据实际气门正时选择。 当检测到气门正时控制中的异常时，不管发动机工作条件如何，都将气门正时保持在预定的阀定时，并且选择至少一个鉴别参数和至少一个控制参数的值，这些值对应于所保持的预定 气门正时。 或者，当检测到气门正时控制的异常时，禁止上述的发动机运转控制。

公开(公告)号：US4960083A

公开(公告)日：1990-10-02

申请号：US388647

申请日：1989-08-01

申请人： Yasunari Seki ,  Isao Yahata

发明人： Yasunari Seki ,  Isao Yahata

IPC分类号： F01L1/26 ,  F02D13/02 ,  F02D41/26

CPC分类号： F02D13/0207 ,  F01L1/267 ,  F02D41/266 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18

摘要： A failsafe method in connection with valve timing-changeover control for an internal combustion engine. An abnormality in a control system of the engine is detected. A changeover-instructing signal is generated for changing the valve timing to the low speed valve timing in both of the lower and higher engine speed regions, when the abnormality is detected. When the abnormality is detected, the air-fuel ratio of an air-fuel mixture to be supplied to the engine is enriched when the engine is in a predetermined operating condition determined by the detected value of at least one engine parameter. The enriching of the air-fuel ratio of the air-fuel mixture is carried out by multiplying a basic fuel injection period by a correction coefficient or selecting a suitable basic fuel injection period map.

公开(公告)号：US4715350A

公开(公告)日：1987-12-29

申请号：US818637

申请日：1986-01-14

申请人： Tomohiko Kawanabe ,  Noritaka Kushida ,  Masahiko Asakura ,  Yasunari Seki

发明人： Tomohiko Kawanabe ,  Noritaka Kushida ,  Masahiko Asakura ,  Yasunari Seki

IPC分类号： F02M23/04 ,  F02D35/00 ,  F02D41/14

CPC分类号： F02D35/003 ,  F02D41/1486 ,  F02D41/1456

摘要： An air intake side secondary air supply system for an internal combustion engine having an air intake system using a carburetor and an air intake side secondary air supply passage leading to the downstream of the carburetor, includes an oxygen concentration sensor producing an output signal whose level is substantially proportional to an oxygen concentration of the exhaust gas. A control means for controlling a duty ratio of opening and closing of an open/close valve disposed in the air intake side secondary air supply passage in accordance with a result of comparison between the level of the output signal of the oxygen concentration sensor and a level corresponding to a target air-fuel ratio. The target air-fuel ratio is up-dated in response to at least two parameters indicative of the engine operation.

摘要翻译： 具有使用化油器的进气系统和通向化油器下游的进气侧二次空气供给通路的内燃机的吸气侧二次空气供给系统包括：氧浓度传感器，其产生电平为 基本上与废气的氧气浓度成正比。 一种控制装置，用于根据氧浓度传感器的输出信号的电平与电平之间的比较结果来控制设置在进气侧二次空气供给通道中的开/关阀的打开和关闭的占空比 对应于目标空燃比。 响应于指示发动机操作的至少两个参数，目标空燃比被更新。

公开(公告)号：US5427075A

公开(公告)日：1995-06-27

申请号：US216970

申请日：1994-03-24

申请人： Masayoshi Yamanaka ,  Kazutomo Sawamura ,  Hiroshi Maruyama ,  Yasunari Seki

发明人： Masayoshi Yamanaka ,  Kazutomo Sawamura ,  Hiroshi Maruyama ,  Yasunari Seki

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0809

摘要： An evaporative emission control system includes a valve arranged in a passage communicating between a fuel tank and a canister. The valve opens the passage when pressure within part of the evaporative emission control system upstream of the valve exceeds a predetermined value and, closes the passage when the pressure is below the predetermined value. It is determined that the evaporative emission control system is normal when a value of the pressure with the part of the system detected by a pressure sensor is lower than a predetermined reference value below atmospheric pressure.

摘要翻译： 蒸发排放控制系统包括设置在燃料箱和罐之间连通的通道中的阀。 当阀门上游的蒸发排放控制系统的一部分内的压力超过预定值时，阀门打开通道，当压力低于预定值时关闭通道。 当由压力传感器检测到的部分系统的压力值低于低于大气压的预定参考值时，确定蒸发排放控制系统是正常的。

公开(公告)号：US5251592A

公开(公告)日：1993-10-12

申请号：US831029

申请日：1992-02-04

申请人： Yasunari Seki ,  Shigetaka Kuroda ,  Kazutomo Sawamura ,  Masatoshi Udagawa ,  Youichi Iwata ,  Takushi Toda

发明人： Yasunari Seki ,  Shigetaka Kuroda ,  Kazutomo Sawamura ,  Masatoshi Udagawa ,  Youichi Iwata ,  Takushi Toda

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02B77/00 ,  F02M33/02

CPC分类号： F02M25/0809 ,  F02M25/08 ,  F02M2025/0845

摘要： An abnormality detection system is provided, which detects abnormality in an evaporative fuel control system for an internal combustion engine. A plurality of temperature sensors are arranged in an evaporative fuel storage device at different locations for detecting the temperature of an adsorbent or in the vicinity thereof within the storage device at the different locations. An ECU controls at least one of charging of evaporative fuel from the fuel tank to the storage device and purging of evaporative fuel from the storage device to the intake system of the engine. The ECU determines the presence or absence of an abnormality in the evaporative fuel control system, based upon output values from the temperature sensors assumed when the control system is operative. A state in which adsorption of evaporative fuel generated in the fuel tank to the adsorbent of the storage device has been completed is detected, based upon the amount of a rise in temperature detected while the charging is being effected. The ECU effects the abnormality determination after the state has been detected. The system may be applied to an internal combustion engine in which the air-fuel ratio is controlled by the use of an air-fuel ratio correction coefficient determined in response to an output from an air-fuel ratio sensor.

摘要翻译： 提供了一种用于检测内燃机的蒸发燃料控制系统中的异常的异常检测系统。 多个温度传感器布置在不同位置处的蒸发燃料存储装置中，用于在不同位置检测存储装置内的吸附剂或其附近的温度。 ECU控制从燃料箱向存储装置的蒸发燃料的充电和从存储装置向发动机的进气系统的蒸发燃料的净化中的至少一种。 ECU根据控制系统运行时假定的温度传感器的输出值，确定蒸发燃料控制系统中是否存在异常。 基于在充电期间检测到的温度上升量，检测在燃料箱中产生的蒸发燃料对存储装置的吸附剂的吸附已经完成的状态。 在检测到状态之后，ECU执行异常判定。 该系统可以应用于通过使用响应于空燃比传感器的输出而确定的空燃比校正系数来控制空燃比的内燃机。

公开(公告)号：US5009203A

公开(公告)日：1991-04-23

申请号：US388170

申请日：1989-08-01

申请人： Yasunari Seki

发明人： Yasunari Seki

IPC分类号： F01L1/26 ,  F02D13/02 ,  F02D41/22 ,  F02D41/34

CPC分类号： F02D13/0207 ,  F01L1/267 ,  F02D41/221 ,  F02D41/345 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/44

摘要： A control method for a valve-timing changeover in an engine having a valve operating mechanism capable of operating the intake valves or exhaust valves, or both, in a different manner, known as valve timing, such as the magnitude of valve lift or the duration the valve remains open, for improving the operation of the engine at different engine speeds. The control method uses various parameters to cause the changeover to occur when the engine output is substantially the same in the two different valve timing speed ranges between which the changeover is being made to minimize any shock loading during the changeover. In a fuel injection type engine, the preset quantities of fuel injection that would normally be supplied to the engine for those two different valve timing speed ranges are used to determine the engine output and return the proper time for the changeover.

摘要翻译： 一种用于具有能够以不同方式操作进气门或排气门或两者的气门操作机构的发动机中的气门正时切换的控制方法，称为气门正时，例如气门升程的大小或持续时间 阀门保持打开状态，以改善发动机在不同发动机转速下的运行。 当在两个不同的气门正时速度范围内发动机输出基本相同时，控制方法使用各种参数来进行切换，在两个不同的气门正时速度范围内进行切换，以最小化切换期间的任何冲击负载。 在燃料喷射式发动机中，通常将这两种不同的气门正时速度范围通常提供给发动机的预定量的燃料喷射用于确定发动机输出并返回适当的转换时间。

公开(公告)号：US4818362A

公开(公告)日：1989-04-04

申请号：US27893

申请日：1987-03-19

申请人： Masahiko Asakura ,  Tomohiko Kawanabe ,  Minoru Muroya ,  Shin'ichi Kubota ,  Katsuhiko Kimura ,  Yasunari Seki ,  Kouji Matsuura

发明人： Masahiko Asakura ,  Tomohiko Kawanabe ,  Minoru Muroya ,  Shin'ichi Kubota ,  Katsuhiko Kimura ,  Yasunari Seki ,  Kouji Matsuura

IPC分类号： G01N27/406 ,  G01N27/58

CPC分类号： G01N27/4065

摘要： An apparatus for sensing the concentration of oxygen in a gas such as engine exhaust gas includes an oxygen concentration sensor formed of an oxygen pump element and a sensor cell element, each based on a solid electrolytic member formed of a material such as ZrO.sub.2, and is provided with a limiter circuit which functions to reduce the level of current supplied to the oxygen pump element when a voltage produced by the sensor cell element indicates that this current level is such as to produce a "blackening" phenomenon whereby deterioration of the oxygen pump element will occur and oxygen concentration sensing reliability will be lowered. The apparatus also includes a delay circuit which functions such that a reduction of the oxygen pump element current level is delayed by a predetermined time interval, after an increase of the sensor cell element voltage to the "blanking" region is detected, thereby preventing fluctuations in the oxygen pump element current level due to transient increases in sensor cell element voltage and increasing the sensing reliability.

摘要翻译： 用于检测诸如发动机废气的气体中的氧浓度的装置包括由氧泵元件和传感器电池元件形成的氧浓度传感器，每个氧浓度传感器基于由诸如ZrO 2的材料形成的固体电解部件，并且是 设置有限制电路，其功能是当由传感器电池元件产生的电压指示该电流水平产生“变黑”现象时，降低供应给氧泵元件的电流电平，从而使氧泵元件的劣化 会发生氧浓度检测的可靠性降低。 该装置还包括延迟电路，其功能是使得在检测到“消隐”区域的传感器单元元件电压增加之后，将氧气泵元件电流水平的减小延迟预定时间间隔，从而防止波动 氧泵元件电流水平由于传感器单元电压的瞬态增加而增加了传感器的可靠性。

公开(公告)号：US4763265A

公开(公告)日：1988-08-09

申请号：US826467

申请日：1986-02-05

申请人： Tomohiko Kawanabe ,  Masahiko Asakura ,  Noritaka Kushida ,  Yasunari Seki ,  Takanori Shiina ,  Minoru Muroya

发明人： Tomohiko Kawanabe ,  Masahiko Asakura ,  Noritaka Kushida ,  Yasunari Seki ,  Takanori Shiina ,  Minoru Muroya

IPC分类号： F02D31/00 ,  F02D41/30 ,  F02B3/00

CPC分类号： F02D41/3005 ,  F02D31/005 ,  F02D2011/102 ,  F02D2041/2027 ,  F02D2200/0406

摘要： An air intake side secondary air supply system for an internal combustion engine having an air intake side secondary air supply system includes an oxygen concentration sensor, and controls a duty ratio of opening and closing of an open/close valve disposed in the air intake side secondary air supply passage by determining a valve open period within each duty cycle of control operation in accordance with a result of comparison between the level of the output signal of the oxygen concentration sensor and a level corresponding to a target air-fuel ratio. The duty ratio of opening and closing of the open/close valve is maintained within a predetermined duty ratio range so as to improve effectiveness of the control of the secondary air supply as well as to avoid the generation of over lean or over rich mixture.

摘要翻译： 具有进气侧二次空气供给系统的内燃机的进气侧二次空气供给系统具有氧浓度传感器，并且控制配置在吸气侧二次侧的开闭阀的开闭的占空比 通过根据氧浓度传感器的输出信号的电平与目标空燃比的电平之间的比较的结果来确定控制操作的每个占空比内的阀打开时段的空气供给通道。 打开/关闭阀的打开和关闭的占空比保持在预定的占空比范围内，以提高二次空气供应的控制的有效性，并避免产生过度的或超过浓的混合物。