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    Combustion state-detecting system for internal combustion engines
    1.
    发明授权
    Combustion state-detecting system for internal combustion engines 失效
    内燃机燃烧状态检测系统

    公开(公告)号：US5471869A

    公开(公告)日：1995-12-05

    申请号：US303683

    申请日：1994-09-09

    申请人： Shigetaka Kuroda ,  Toshihiko Sato ,  Tsuyoshi Takizawa

    发明人： Shigetaka Kuroda ,  Toshihiko Sato ,  Tsuyoshi Takizawa

    IPC分类号： F02D45/00 ,  F02B75/02 ,  F02P17/12 ,  G01M15/11 ,  G01M15/00

    CPC分类号： G01M15/11 ,  F02B2075/027

    摘要： A combustion state-detecting system for an internal combustion engine is provided, which detects misfires occurring in the engine. A crank angle sensor generates a crank angle signal with a predetermined period shorter than a firing period of the engine whenever the crankshaft rotates through a predetermined angle. An ECU detects the rotational speed of the engine, based on the crank angle signal whenever the crank angle signal is generated to generate a rotational speed signal, and filters the rotational speed signal to extract a specific frequency component therefrom. A rate of variation in the extracted specific frequency component is calculated every first predetermined time period, and an average value of the rate of variation is calculated every second predetermined time period longer than the first predetermined time period. Further, the difference between the average value and the rate of variation is calculated, and absolute values of the difference is cumulated over the second predetermined time period to obtain a difference cumulative value. Then, the difference cumulative value is compared with a predetermined value, and it is determined that the engine is in a continuous degraded combustion state when the difference cumulative value has continued to exceed the predetermined value, and that the engine is in a sporadic degraded combustion state when the difference cumulative value once exceeds the predetermined value once and then becomes smaller than the predetermined value, before it again exceeds the predetermined value.

    摘要翻译： 提供了一种用于内燃机的燃烧状态检测系统，其检测发动机中发生的失火。 每当曲轴旋转预定角度时，曲柄角传感器产生具有比发动机的点火时间短的预定时间段的曲轴转角信号。 只要产生曲柄角信号，ECU就基于曲柄角信号来检测发动机的转速，以产生转速信号，并且对转速信号进行滤波以从中提取特定的频率分量。 在每第一预定时间段计算提取的特定频率分量的变化率，并且每隔一个预定时间段计算比第一预定时间段更长的变化率的平均值。 此外，计算平均值和变化率之间的差异，并且在第二预定时间段内累积差异的绝对值以获得差值累积值。 然后，将差累计值与预定值进行比较，并且当差累积值继续超过预定值并且发动机处于零星劣化燃烧时，确定发动机处于连续劣化燃烧状态 当差值累积值一次超过预定值一次然后变得小于预定值时，再次超过预定值。

    System for determining deterioration of catalysts of internal combustion engines
    2.
    发明授权
    System for determining deterioration of catalysts of internal combustion engines 失效
    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。

    Evaporative fuel-processing system for internal combustion engines
    3.
    发明授权
    Evaporative fuel-processing system for internal combustion engines 失效
    内燃机蒸发燃料处理系统

    公开(公告)号：US5355864A

    公开(公告)日：1994-10-18

    申请号：US173055

    申请日：1993-12-27

    申请人： Shigetaka Kuroda ,  Kazutomo Sawamura ,  Hiroshi Maruyama ,  Masayoshi Yamanaka ,  Yoichi Iwata ,  Tsuyoshi Takizawa

    发明人： Shigetaka Kuroda ,  Kazutomo Sawamura ,  Hiroshi Maruyama ,  Masayoshi Yamanaka ,  Yoichi Iwata ,  Tsuyoshi Takizawa

    IPC分类号： F02M25/08 ,  F02M33/02

    CPC分类号： F02M25/0809

    摘要： An evaporative fuel-processing system for an internal combustion engine, in which a first control valve is arranged across an evaporative fuel-guiding passage extending from a fuel tank to a canister, a second control valve across a purging passage extending from the canister to the intake system of the engine, and a third control valve at an air inlet port of the canister, respectively. An ECU generates operation command signals to the first to third control valves for closing or opening the same. The ECU is responsive to an output from a tank internal pressure sensor which detects pressure within the fuel tank and the operation command signals, for detecting an abnormality in operation of a predetermined one of the first to third control valves.

    摘要翻译： 一种用于内燃机的蒸发燃料处理系统，其中第一控制阀布置在从燃料箱延伸到罐的蒸发燃料引导通道的两侧，跨过从罐延伸到吹扫通道的清洗通道的第二控制阀 发动机的进气系统，以及位于罐的进气口的第三控制阀。 ECU向第一至第三控制阀产生操作命令信号以关闭或打开该控制阀。 ECU响应于检测燃料箱内的压力的油箱内部压力传感器和操作指令信号的输出，用于检测第一至第三控制阀中的预定的一个操作中的异常。

    Evaporative fuel control unit for internal combustion engine
    4.
    发明授权
    Evaporative fuel control unit for internal combustion engine 失效
    内燃机用蒸发燃料控制装置

    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

    IPC分类号： F02D41/00 ,  F02M25/08 ,  F02M37/04

    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。

    Control apparatus for hybrid vehicle
    9.
    发明授权
    Control apparatus for hybrid vehicle 有权
    混合动力汽车控制装置

    公开(公告)号：US06570266B1

    公开(公告)日：2003-05-27

    申请号：US09695422

    申请日：2000-10-25

    申请人： Teruo Wakashiro ,  Shigetaka Kuroda ,  Atsushi Matsubara ,  Shinichi Kitajima ,  Hideyuki Oki ,  Hideyuki Takahashi

    发明人： Teruo Wakashiro ,  Shigetaka Kuroda ,  Atsushi Matsubara ,  Shinichi Kitajima ,  Hideyuki Oki ,  Hideyuki Takahashi

    IPC分类号： H02P904

    CPC分类号： B60W20/10 ,  B60K6/485 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  B60W2510/0604 ,  B60W2510/244 ,  B60W2540/10 ,  B60W2550/12 ,  Y02T10/6226 ,  Y02T10/6286 ,  Y10S903/903 ,  Y10S903/918 ,  Y10S903/919

    摘要： A control apparatus provided in a hybrid vehicle with a combustion engine for outputting a driving force, an electric motor for generating a force for assisting the output from the engine, depending on the driving conditions, a power storage unit for storing electric energy generated by the motor acting as a generator using the output from the engine and electric energy generated by the motor when the vehicle decelerates. The control apparatus includes an output assistance determining device for determining whether to assist the output from the engine by the motor; a generation controller for setting the amount of generation by the motor and performing the generation by the motor when the output assistance determining device determines that the motor is not to assist the output from the engine; and a generation limiter for limiting the amount of generation set by the generation controller.

    摘要翻译： 一种控制装置，其设置在具有用于输出驱动力的内燃机的混合动力车辆中，根据驾驶条件产生用于产生用于辅助来自发动机的输出的力的电动机;蓄电部，其存储由所述驱动力产生的电能; 电机作为发电机使用发动机的输出和电动机在车辆减速时产生的电能。 所述控制装置包括输出辅助确定装置，用于确定是否辅助由所述发动机从所述发动机的输出; 发电控制器，用于当输出辅助确定装置确定电动机不协助来自发动机的输出时，设置电动机的发电量并执行电动机的产生; 以及用于限制由发电控制器设定的发电量的发电限制器。