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1. 发明授权

US5485382A Oxygen sensor deterioration-detecting system for internal combustion engines 失效
标题翻译：内燃机氧传感器劣化检测系统
公开(公告)号：US5485382A
公开(公告)日：1996-01-16
申请号：US226007
申请日：1994-04-11
申请人： Yasunari Seki , Toshihiko Sato , Naoki Iida , Yoichi Iwata
发明人： Yasunari Seki , Toshihiko Sato , Naoki Iida , Yoichi Iwata
IPC分类号： F02D41/14 , F02D41/22 , G01N33/00 , G06G7/70 , F01N3/00 , G06F19/00
CPC分类号： F02D41/1443 , F02D41/1495 , G01N33/007
摘要： An oxygen sensor deterioration-detecting system for an internal combustion engine having a plurality of groups of cylinders groups, an exhaust system having a plurality of exhaust passages extending, respectively, from the cylinder groups, and catalytic converters arranged in the exhaust system, and a plurality of upstream oxygen sensors arranged, respectively, in the exhaust passages at locations upstream of the catalytic converters, includes a single downstream oxygen sensor arranged in a confluent portion of the exhaust passages at a location downstream of the catalytic converters, for detecting the mixed air-fuel ratio of exhaust gases emitted from the cylinder groups. An ECU is responsive to outputs from the upstream oxygen sensors and an output from the downstream oxygen sensor, for determining air-fuel ratio control amounts for respective ones of the cylinder groups, and for controlling the air-fuel ratios of air-fuel mixtures supplied into the respective cylinder groups by the use of the air-fuel ratio control amounts determined. The ECU detects deterioration of each upstream oxygen sensor, based on an output from the upstream oxygen sensor obtained by the air-fuel ratio control based on a corresponding one of the air-fuel ratio control amounts.
摘要翻译：一种用于具有多组气缸组的内燃机的氧传感器劣化检测系统，具有分别从气缸组延伸的多个排气通道的排气系统和布置在排气系统中的催化转化器，分别在催化转化器上游的排气通道中排列的多个上游氧传感器包括在催化转化器的下游位置排列在排气通道的汇合部分中的单个下游氧传感器，用于检测混合空气 - 从气缸组排放的废气的燃料比。 ECU响应来自上游氧气传感器的输出和来自下游氧气传感器的输出，用于确定各个气缸组的空燃比控制量，并且用于控制供应的空气 - 燃料混合物的空燃比通过使用所确定的空燃比控制量进入各气缸组。 ECU根据空燃比控制得到的上游氧传感器的输出，根据空燃比控制量的相应一个，检测上游氧传感器的劣化。

2. 发明授权

US5379591A Air-fuel ratio control system for internal combustion engines 失效
标题翻译：内燃机空燃比控制系统
公开(公告)号：US5379591A
公开(公告)日：1995-01-10
申请号：US187724
申请日：1994-01-28
申请人： Yoichi Iwata , Naoki Iida , Tsuyoshi Takizawa , Yasunari Seki , Toshihiko Sato , Takayoshi Nakayama
发明人： Yoichi Iwata , Naoki Iida , Tsuyoshi Takizawa , Yasunari Seki , Toshihiko Sato , Takayoshi Nakayama
IPC分类号： F02D41/14 , F01N3/22
CPC分类号： F02D41/1483 , F02D41/1441 , F02B2275/18 , F02D41/1456
摘要： An air-fuel ratio control system for an internal combustion engine calculates an air-fuel ratio feedback control parameter by proportional-integral control using a proportional factor and an integral factor, based an output signal from a second air-fuel ratio sensor arranged in an exhaust passage at a location upstream of a catalytic converter. An air-fuel ratio correction amount is calculated based on the air-fuel ratio feedback control parameter and an output signal from a first air-fuel ratio sensor arranged in the exhaust passage at a location upstream of the catalytic converter. An inversion period of the output signal from the second air-fuel ratio sensor is measured, and the proportional factor is changed according to the inversion period measured.
摘要翻译：用于内燃机的空燃比控制系统基于来自布置在内燃机中的第二空燃比传感器的输出信号，使用比例因子和积分因子的比例积分控制来计算空燃比反馈控制参数在催化转化器上游位置的排气通道。基于空燃比反馈控制参数和布置在催化转化器上游的排气通道中的第一空燃比传感器的输出信号来计算空燃比校正量。测量来自第二空燃比传感器的输出信号的反转周期，并且根据测量的反转周期改变比例因子。

3. 发明授权

US5386695A Air-fuel ratio control system for internal combustion engines, having catalytic converter deterioration-detecting function 失效
标题翻译：具有催化转化器劣化检测功能的内燃机空燃比控制系统
公开(公告)号：US5386695A
公开(公告)日：1995-02-07
申请号：US183750
申请日：1994-01-21
申请人： Yoichi Iwata , Toshihiko Sato , Yasunari Seki , Tsuyoshi Takizawa , Takayoshi Nakayama
发明人： Yoichi Iwata , Toshihiko Sato , Yasunari Seki , Tsuyoshi Takizawa , Takayoshi Nakayama
IPC分类号： F01N3/20 , F01N11/00 , F02D41/14 , F02D41/22 , F01N3/22
CPC分类号： F01N11/007 , F01N2900/0422 , Y02T10/47
摘要： An air-fuel ratio control system for an internal combustion engine having a catalytic converter arranged in the exhaust system, and first and second air-fuel ratio sensors arranged upstream and downstream of the catalytic converter respectively has an ECU which calculates an air-fuel ratio correction amount, based at least on an output from the first air-fuel ratio sensor, and detects deterioration of the catalytic converter, based on an output from the second air-fuel ratio sensor when the engine is in a predetermined operating condition. The ECU inhibits detection of deterioration of the catalytic converter when the air-fuel ratio correction amount falls outside a predetermined range.
摘要翻译：具有排气系统中具有催化转化器的内燃机的空燃比控制系统以及分别位于催化转化器的上游和下游的第一和第二空燃比传感器分别具有计算空燃比的ECU 校正量，至少基于第一空燃比传感器的输出，并且当发动机处于预定操作状态时，基于来自第二空燃比传感器的输出来检测催化转化器的劣化。当空燃比校正量落在预定范围之外时，ECU禁止检测催化转化器的劣化。

4. 发明授权

US5381657A Catalyst deterioration-detecting system for internal combustion engines 失效
标题翻译：内燃机用催化剂劣化检测系统
公开(公告)号：US5381657A
公开(公告)日：1995-01-17
申请号：US183751
申请日：1994-01-21
申请人： Tsuyoshi Takizawa , Yasunari Seki , Yoichi Iwata , Toshihiko Sato , Takayoshi Nakayama
发明人： Tsuyoshi Takizawa , Yasunari Seki , Yoichi Iwata , Toshihiko Sato , Takayoshi Nakayama
IPC分类号： F02D41/14 , F01N3/20 , F01N11/00 , F02D41/22 , F02D45/00
CPC分类号： F01N11/007 , F01N11/002 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A catalyst deterioration-detecting system is provided for an internal combustion engine having an oxygen concentration sensor arranged in an exhaust system downstream of a catalyst provided therein. An electronic control unit (ECU) controls the air-fuel ratio of a mixture supplied to the engine in response to an output from the oxygen concentration sensor. The ECU detects a value of an inversion period with which the output from the oxygen concentration sensor is inverted with respect to a predetermined reference value. Operating parameter sensors detect a value of at least one operating parameter of the engine related to a flow rate of the exhaust gases in the exhaust system. The ECU determines whether the catalyst is deteriorated, based on the detected value of the inversion period and the detected value of the at least one operating parameter. The ECU corrects the value of the inversion period in dependence on the detected value of the at least one operating parameter.
摘要翻译：本发明提供一种催化剂劣化检测系统，该系统具有布置在设置在其中的催化剂下游的排气系统中的氧浓度传感器。电子控制单元（ECU）响应于氧浓度传感器的输出控制供应到发动机的混合物的空燃比。 ECU检测氧浓度传感器的输出相对于规定的基准值反转的反转期间的值。操作参数传感器检测与排气系统中废气的流量相关的发动机的至少一个操作参数的值。 ECU根据反转期间的检测值和至少一个运行参数的检测值，判定催化剂是否劣化。 ECU根据至少一个操作参数的检测值来校正反转周期的值。

5. 发明授权

US5375416A Air-fuel ratio sensor deterioration-detecting device for internal combustion engines 失效
标题翻译：用于内燃机的空燃比传感器劣化检测装置
公开(公告)号：US5375416A
公开(公告)日：1994-12-27
申请号：US184048
申请日：1994-01-21
申请人： Yoichi Iwata , Toshihiko Sato , Yasunari Seki , Tsuyoshi Takizawa , Takayoshi Nakayama
发明人： Yoichi Iwata , Toshihiko Sato , Yasunari Seki , Tsuyoshi Takizawa , Takayoshi Nakayama
IPC分类号： F01N3/20 , F02D41/14 , F02D41/22 , F02D45/00 , F01N3/22
CPC分类号： F02D41/1495
摘要： An air-fuel ratio sensor deterioration-detecting device for an internal combustion engine having a catalytic converter arranged in the exhaust system, and first and second air-fuel ratio sensors arranged upstream and downstream of the catalytic converter respectively has an ECU which calculates an air-fuel ratio correction amount, based on outputs from the first air-fuel ratio sensors, and detects deterioration of the first air-fuel ratio sensor, based on the output from the first air-fuel ratio sensor. The ECU inhibits detection of deterioration of the first air-fuel ratio sensor when the air-fuel ratio correction amount falls outside a predetermined range.
摘要翻译：具有设置在排气系统中的催化转化器的内燃机的空燃比传感器劣化检测装置，分别位于催化转化器的上游和下游的第一和第二空燃比传感器分别具有计算空气的ECU - 燃料比校正量，基于来自第一空燃比传感器的输出，并且基于第一空燃比传感器的输出来检测第一空燃比传感器的劣化。当空燃比校正量落在预定范围之外时，ECU禁止检测第一空燃比传感器的劣化。

6. 发明授权

US5325664A System for determining deterioration of catalysts of internal combustion engines 失效
标题翻译：用于确定内燃机催化剂劣化的系统
公开(公告)号：US5325664A
公开(公告)日：1994-07-05
申请号：US961794
申请日：1992-10-16
申请人： Yasunari Seki , Toshihiko Sato , Katuhiro Kumagai , Hiroshi Maruyama , Yoichi Iwata , Tsuyoshi Takizawa , Kenichi Maeda , Shigetaka Kuroda , Masataka Chikamatsu , Shukoh Terata , Kazutomo Sawamura , Hajime Uto , Takuya Aoki , Makoto Kobayashi
发明人： Yasunari Seki , Toshihiko Sato , Katuhiro Kumagai , Hiroshi Maruyama , Yoichi Iwata , Tsuyoshi Takizawa , Kenichi Maeda , Shigetaka Kuroda , Masataka Chikamatsu , Shukoh Terata , Kazutomo Sawamura , Hajime Uto , Takuya Aoki , Makoto Kobayashi
IPC分类号： F01N11/00 , F01N13/02 , F02F3/26
CPC分类号： F01N11/002 , F01N11/007 , F01N13/009 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A catalyst deterioration-determining system determines deterioration of a catalyst arranged in the exhaust passage of an internal combustion engine. An ECU is responsive to an output from an O.sub.2 sensor arranged upstream of the catalyst or outputs from O.sub.2 sensors arranged upstream and downstream of the catalyst for controlling the air-fuel ratio of a mixture supplied to the engine by means of an air-fuel ratio correction value (first air-fuel ratio control). When the engine is in a predetermined operating condition, the system effects changeover from the first air-fuel ratio control to a second air-fuel ratio control which is responsive to the output from the downstream O.sub.2 sensor for controlling the air-fuel ratio of the mixture by means of the air-fuel ratio correction value. After the changeover has been effected, a time period is measured which elapses from the time the second air-fuel ratio control causes a change in the air-fuel ratio correction value from a richer side to a leaner side or vice versa with respect to a stoichiometric air-fuel ratio to the time the output from the downstream O.sub.2 sensor is inverted from the richer side to the leaner side or vice versa with respect to the stoichiometric air-fuel ratio. It is determined that the catalyst is deteriorated, when the measured time period is shorter than the predetermined time period.
摘要翻译：催化剂劣化确定系统确定布置在内燃机的排气通道中的催化剂的劣化。 ECU响应于设置在催化剂上游的O 2传感器的输出或者从设置在催化剂上游和下游的O2传感器输出，用于通过空燃比控制供给发动机的混合物的空燃比校正值（第一空燃比控制）。当发动机处于预定的运行状态时，该系统实现从第一空燃比控制切换到第二空燃比控制，第二空燃比控制响应于来自下游O2传感器的输出，用于控制发动机的空燃比通过空燃比校正值进行混合。在切换已经实现之后，测量从第二空燃比控制引起空燃比校正值从更丰富侧到更瘦侧的变化时间经过的时间段，反之亦然化学计量空燃比与下游O2传感器的输出相对于化学计量空燃比从更丰富的一侧反转到更稀的侧，反之亦然。当测量的时间段短于预定时间段时，确定催化剂劣化。

7. 发明授权

US5396765A Oxygen sensor deterioration-detecting device for internal combustion engines 失效
标题翻译：内燃机用氧传感器劣化检测装置
公开(公告)号：US5396765A
公开(公告)日：1995-03-14
申请号：US98049
申请日：1993-07-28
申请人： Hiroshi Maruyama , Tsuyoshi Takizawa , Toshihiko Sato , Hiroshi Ito , Yasunari Seki , Takayoshi Nakayama
发明人： Hiroshi Maruyama , Tsuyoshi Takizawa , Toshihiko Sato , Hiroshi Ito , Yasunari Seki , Takayoshi Nakayama
IPC分类号： F02D41/14 , F02D41/22 , F02D45/00 , F01N3/20
CPC分类号： F02D41/1441 , F02D41/1495
摘要： The air-furl ratio of an air-fuel mixture supplied to an internal combustion engine is controlled in response to an output from at least one oxygen sensor arranged in an exhaust passage for detecting concentration of oxygen present in exhaust gases. The deterioration of the at least one oxygen sensor is detected based on the output therefrom. When the engine is detected to be in a predetermined abnormal operating state, it is not permitted to monitor the output from the oxygen sensor for detecting deterioration thereof.
摘要翻译：响应于布置在排气通道中的至少一个氧传感器的输出来控制供应到内燃机的空气燃料混合物的空气比，用于检测废气中存在的氧气的浓度。基于其输出来检测至少一个氧传感器的劣化。当检测到发动机处于预定的异常运行状态时，不允许监视氧传感器的输出以检测其劣化。

8. 发明授权

US06494087B2 Misfire state discrimination system of internal combustion engine 失效
标题翻译：内燃机失火状态判别系统
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。

9. 发明授权

US5396873A Evaporative fuel-processing system for internal combustion engines 失效
标题翻译：内燃机蒸发燃料处理系统
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。

10. 发明授权

US4960094A Knocking control system for internal combustion engines 失效
标题翻译：内燃机爆震控制系统
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。

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