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公开(公告)号：US5305724A
公开(公告)日：1994-04-26
申请号：US20404
申请日：1993-02-22
申请人： Masataka Chikamatsu , Shigetaka Kuroda , Kazutomo Sawamura , Toshihiko Sato , Takayoshi Nakayama
发明人： Masataka Chikamatsu , Shigetaka Kuroda , Kazutomo Sawamura , Toshihiko Sato , Takayoshi Nakayama
CPC分类号： F02M25/0809 , F02M25/08
摘要： Disclosed is an evaporative fuel purging apparatus used for an internal combustion engine. A canister having an absorbing agent for absorbing an evaporative fuel generated in a fuel tank of the internal combustion engine is provided. A drain control valve is provided on a drain port for opening the canister to the atmospheric air, and which is adapted to open and close the drain port. A purge control valve is provided on a purge passage communicating the canister to a part of an intake system, and which is adapted to purge the evaporative fuel absorbed into the canister through opening and closing the purge passage. A diagnostic device diagnoses the presence or absence of leakage in a purge system which is sealed up by closing the drain control valve and the purge control valve after pressure-reduction treatment. In the above apparatus, the drain control valve is opened after termination of the diagnosis by the diagnostic device, to open the canister to the atmospheric air through the drain port, and after an elapse of a specified time, the purge is started by opening the purge control valve. With this construction, it is possible to prevent the rapid change in the air-fuel ratio in re-starting the purge after termination of the diagnosis for the purge system, and hence to improve the stabilization of the emission and the drivability.
摘要翻译： 公开了一种用于内燃机的蒸发式燃料净化装置。 提供一种具有用于吸收在内燃机的燃料箱中产生的蒸发燃料的吸收剂的罐。 排水控制阀设置在排水口上，用于将罐打开到大气中，并适于打开和关闭排放口。 清洗控制阀设置在净化通道上，该净化通道将罐连通到进气系统的一部分，并且适于通过打开和关闭净化通道来吹扫吸收到罐中的蒸发燃料。 诊断装置诊断在清除系统中是否存在泄漏，其通过在减压处理之后关闭排水控制阀和清洗控制阀而被密封。 在上述装置中，通过诊断装置诊断结束之后，排水控制阀打开，通过排水口将罐排放到大气中，经过规定时间后，通过打开 清洗控制阀。 利用这种结构，可以防止清除系统的诊断结束之后重新启动吹扫的空燃比的快速变化，从而改善排放的稳定性和驾驶性能。
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42.发明授权
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
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。
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公开(公告)号：USRE37895E1
公开(公告)日：2002-10-29
申请号：US08620299
申请日：1996-03-22
申请人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
发明人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
IPC分类号： F02M3302
CPC分类号： F02M25/0809 , F02D41/003 , F02D41/1454 , F02D2041/225 , F02D2200/0406 , F02D2200/0414 , F02D2200/0606 , F02D2200/703 , F02M2025/0845
摘要： An evaporative fuel processing system adapted to be capable of detecting abnormality of an evaporative emission control system for storing, in a canister, evaporative fuel from a fuel tank for holding fuel to be supplied to an internal combustion engine, and purging evaporative fuel into the intake system of the engine. A first control valve is arranged across a passage extending between the fuel tank and the canister. A second control valve is arranged across a passage extending between the canister and the intake system of the engine. A third control valve is provided for an air inlet part of the canister communicatable with the atmosphere. Through operating these control valves to open and close them, the evaporative emission control system is negatively pressurized, and abnormality of this system is detected based on the pressure detected in this negatively pressurized state thereof. Timing for carrying out abnormality determination is determined depending on conditions of the fuel tank. Before starting the whole process for abnormality diagnosis of the system evaporative fuel stored in the canister is allowed to be purged for a predetermined time period. When the temperature of fuel in the fuel tank exceeds a predetermined value, the abnormality determination is inhibited.
摘要翻译： 一种蒸发燃料处理系统，其适于能够检测蒸发排放控制系统的异常，所述蒸发排放控制系统用于将来自燃料箱的蒸发燃料储存在用于保持要供应到内燃机的燃料的蒸发排放控制系统中，并将蒸发燃料吹入进气口 发动机系统。 第一控制阀横跨在燃料箱和罐之间延伸的通道布置。 第二控制阀跨过在发动机的罐和进气系统之间延伸的通道布置。 第三控制阀设置用于可与大气通信的罐的空气入口部分。 通过操作这些控制阀来打开和关闭它们，蒸发排放控制系统被负压，并且基于在其负压状态下检测到的压力来检测该系统的异常。 用于进行异常判定的定时取决于燃料箱的状况。 在开始用于系统的异常诊断的整个过程之前，允许存储在罐中的蒸发燃料被清洗预定时间段。 当燃料箱中的燃料的温度超过预定值时，禁止异常判定。
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44.发明授权
公开(公告)号：US5509268A
公开(公告)日：1996-04-23
申请号：US208686
申请日：1994-03-11
CPC分类号： F02D41/22 , G01M15/11 , F02B2075/027 , Y02T10/40
摘要： A combustion state-determining system for an internal combustion engine has an ECU which determines a misfiring state of the engine, and calculates a misfiring rate of the engine, based on the result of the determination of the misfiring state. A catalyst temperature sensor detects the temperature of a catalytic converter as the exhaust system temperature, and the ECU determines the combustion state of the engine, based on the detected exhaust system temperature and the calculated misfiring rate. A combustion state control system restrains the output from the engine, based on the determination result of the combustion state-determining system.
摘要翻译： 用于内燃机的燃烧状态确定系统具有ECU，其确定发动机的失火状态，并且基于判断出发火状态的结果来计算发动机的失火率。 催化剂温度传感器基于检测到的排气系统温度和计算出的失火率，检测催化转化器的温度作为排气系统温度，并且ECU确定发动机的燃烧状态。 燃烧状态控制系统基于燃烧状态确定系统的确定结果来限制发动机的输出。
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45.发明授权
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
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。
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公开(公告)号：US5267547A
公开(公告)日：1993-12-07
申请号：US5993
申请日：1993-01-19
申请人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
发明人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
CPC分类号： F02M25/0809
摘要： A tank internal pressure-detecting device for an internal combustion engine having an evaporative emission control system for controlling purging of evaporative fuel generated in a fuel tank thereof into an intake system thereof. An ECU interrupts purging of evaporative fuel by the evaporative emission control system for a predetermined period of time after the engine is started. The ECU causes control valves of the evaporative emission control system to open the interior of the fuel tank to the atmosphere, and stores a value of pressure within the fuel tank detected by a tank internal pressure sensor as a reference value while the purging is being interrupted and at the same time the interior of the fuel tank is opened to the atmosphere. The ECU corrects an output value of the tank internal pressure sensor, based upon the reference value stored.
摘要翻译： 一种用于内燃机的罐内压检测装置，具有蒸发排放控制系统，用于控制在其燃料箱中产生的蒸发燃料的清洗进入其进气系统。 发动机启动后，ECU将通过蒸发排放控制系统中断预定时间段内的蒸发燃料的清除。 ECU使蒸发排放控制系统的控制阀将燃料箱的内部打开到大气中，并且在吹扫中断期间将由罐内压力传感器检测到的燃料箱内的压力值存储为参考值 并且同时燃料箱的内部向大气敞开。 ECU根据存储的参考值校正油箱内部压力传感器的输出值。
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公开(公告)号：US06352489B1
公开(公告)日：2002-03-05
申请号：US09520628
申请日：2000-03-07
IPC分类号： B60R4102
CPC分类号： B60W20/40 , B60K6/48 , B60K6/485 , B60K6/547 , B60L15/20 , B60L2240/441 , B60L2240/486 , B60W10/02 , B60W10/06 , B60W20/00 , B60W2510/0638 , B60W2540/16 , F02N11/0822 , F02N11/0833 , Y02T10/48 , Y02T10/6221 , Y02T10/6226 , Y02T10/645 , Y02T10/7275 , Y10S903/903 , Y10S903/914 , Y10S903/919 , Y10S903/946 , Y10S903/951 , Y10T477/26 , Y10T477/27 , Y10T477/32
摘要： The engine control system for a hybrid vehicle, according to the present invention, having an internal combustion engine and an electric motor as driving force sources, comprises: a clutch, provided between the engine and a transmission system, for disabling and enabling driving force transmission between the engine and the transmission system; clutch disengagement detector for detecting engagement/disengagement of the clutch; engine speed detector for detecting an engine speed; and fuel cutter for permitting stopping and restarting of the engine in accordance with at least a result of detection by the clutch disengagement detector among predetermined drive conditions, and cutting fuel supply to the engine when the vehicle decelerates, a fuel-supply restart engine speed at which fuel supply is resumed being set in the fuel cutter. Stopping the engine is accomplished by cutting fuel supply by the fuel cutter, and once the engine stop is initiated, even when the engine speed reaches the fuel-supply restart engine speed, fuel supply cut by the fuel cutter is maintained, and when the engine speed detected by the engine speed detector at a time of disengagement of the clutch is detected by the clutch disengagement detector is equal to or lower than a predetermined engine speed, fuel supply cut by the fuel cutter is maintained whereas when the detected engine speed is higher than the predetermined engine speed, fuel supply is restarted.
摘要翻译： 根据本发明的用于具有内燃机和电动机作为驱动力源的混合动力车辆的发动机控制系统包括：设置在发动机和变速器系统之间的离合器，用于禁用和使能驱动力传递 在发动机和变速器系统之间; 离合器分离检测器，用于检测离合器的接合/分离; 用于检测发动机转速的发动机转速检测器; 以及燃料切割器，用于根据至少在预定的驱动条件下的离合器分离检测器的检测结果，使发动机停止和再起动，以及当车辆减速时切断向发动机的燃料供给，将燃料供给重启发动机转速设定在 哪个燃料供应恢复被设置在燃料切割机中。 停止发动机是通过切断燃料切割器的燃料供给来实现的，并且一旦发动机停止启动，即使当发动机转速达到燃料供给重新启动发动机转速时，由燃料切割器保持的燃料供给被维持，并且当发动机 由离合器分离检测器检测到的离合器分离时由发动机转速检测器检测出的速度等于或低于预定的发动机转速，由燃料切割器切断的燃料供给被维持，而当检测到的发动机转速较高时 比预定的发动机转速重新开始燃料供给。
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48.发明授权
公开(公告)号：US5622049A
公开(公告)日：1997-04-22
申请号：US571472
申请日：1995-12-13
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , B60W10/11 , F01N3/20 , F01N3/24 , F01N9/00 , F02D29/00 , F02D41/04 , F02D41/14 , F02D41/22 , F02D43/00 , F02D45/00 , F01N3/00
CPC分类号： F01N9/005 , F02D41/1446 , F01N2260/02 , F01N3/20 , Y02T10/47
摘要： A control system for an internal combustion engine for an automotive vehicle determines whether a catalytic converter arranged in the exhaust system of the engine is in a predetermined high temperature condition. When it is determined that the catalytic converter is in the predetermined high temperature condition, priority is given either to a decrease in the amount of intake air supplied to the engine or to an increase in the amount of fuel to be supplied to the engine, depending on operating conditions of the engine.
摘要翻译： 用于机动车辆的内燃机的控制系统确定布置在发动机的排气系统中的催化转化器是否处于预定的高温状态。 当确定催化转化器处于预定的高温条件时，优先考虑供应给发动机的进气量的减少或供应给发动机的燃料量的增加，这取决于 在发动机的运行条件下。
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公开(公告)号：US5375462A
公开(公告)日：1994-12-27
申请号：US61712
申请日：1993-05-17
申请人： Shigetaka Kuroda , Kazutomo Sawamura , Shukoh Terata , Masaki Kanehiro , Takuji Ishioka , Kenichi Maeda
发明人： Shigetaka Kuroda , Kazutomo Sawamura , Shukoh Terata , Masaki Kanehiro , Takuji Ishioka , Kenichi Maeda
CPC分类号： G01M15/11
摘要： A misfire detecting system for an internal combustion engine, including an intake pipe internal pressure detecting device for detecting an internal pressure of an intake pipe of the internal combustion engine, and a misfire detection inhibiting device for inhibiting the detection of misfire when the internal pressure of the intake pipe detected by the intake pipe internal pressure detecting device is lower than an intake pipe internal pressure in a no-load condition.
摘要翻译： 一种用于内燃机的失火检测系统，包括用于检测内燃机的进气管的内部压力的进气管内压检测装置和用于在内燃机的内部压力下禁止检测到失火的失火检测禁止装置 由进气管内压检测装置检测到的进气管在空载状态下低于进气管内压。
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公开(公告)号：US5357789A
公开(公告)日：1994-10-25
申请号：US149570
申请日：1993-11-09
CPC分类号： F02P15/006 , F02P17/12 , G01M15/042 , F02B1/04 , F02P2017/125 , F02P2017/128
摘要： Misfire detection system for an internal combustion engine. If misfire is found to occur due to vapor lock temporarily happening, it will erroneously be judged that the structure of the engine or the fuel supply system is out of order. However, vapor lock is an interruption of the flow of fuel in a gasoline engine caused by formation of vapor or gas bubbles, and does not mean the engine or the fuel supply system is degraded in its structure. On the contrary, if misfire is detected in such situation, the misfire detection degrades the reliability of the system. The misfire detection is therefore inactivated during conditions in which vapor lock is liable to occur, by discontinuing the detection, or by deliberately deeming no misfire to occurs even if it is so detected. Alternatively, the reference level for misfire detection is raised during such conditions.
摘要翻译： 内燃机失火检测系统。 如果由于蒸气锁暂时发生发生失火，将错误地判断发动机或燃料供应系统的结构是否有故障。 然而，蒸气锁是汽油发动机由蒸气或气泡形成引起的燃料流的中断，并不意味着发动机或燃料供应系统的结构降低。 相反，如果在这种情况下检测到失火，则失火检测会降低系统的可靠性。 因此，在容易发生蒸汽锁的情况下，通过中止检测，或者故意认为即使检测到不发生失火也会使失火检测失效。 或者，在这种情况下提高了失火检测的参考水平。
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