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    • 1. 发明公开
    • Internal combustion engine controller
    • Verbrennungsmotorsteuerung
    • EP2105599A2
    • 2009-09-30
    • EP09002024.9
    • 2009-02-13
    • Hitachi Ltd.
    • Mayuzumi, TakuyaWatanabe, MitsuhikoOura, RyoichiSasaki, Masahiro
    • F02D41/20
    • F02D41/20F02D2041/2006F02D2041/2017
    • An internal combustion engine controller comprises a booster coil 110 connected to a battery 1 and a booster capacitor 130. A switch element 120 is connected to the booster coil 110 to control the passage of current through the booster coil 110 and an interruption of the current. The booster capacitor 130 accumulates electrical energy generated with an inductance of the booster coil 110 at the time of the interruption of the passage of the current. A booster control circuit 150 carries out control in a constant boost switching cycle 500 so as to pass the current through the booster coil 110 and the switch element 120 until the current reaches a preset switching stop threshold value 410 and then interrupt the current to charge the energy generated with the inductance of the booster coil 110 into the booster capacitor 130. The booster control circuit 150 is configured to ensure a minimum time period for the booster capacitor-charging of the energy within the boost switching cycle 500.
    • 内燃机控制器包括连接到电池1和升压电容器130的升压线圈110.开关元件120连接到升压线圈110,以控制通过升压线圈110的电流的通过和电流的中断。 升压电容器130在电流通过中断时积累由升压线圈110的电感产生的电能。 升压控制电路150在恒定升压开关周期500中进行控制,以使电流通过升压线圈110和开关元件120,直到电流达到预设的切换停止阈值410,然后中断电流对 通过升压线圈110的电感产生的能量进入升压电容器130.升压控制电路150被配置为确保升压电容器对升压转换周期500内的能量充电的最小时间周期。
    • 2. 发明公开
    • Internal combustion engine controller
    • 内燃机控制器
    • EP1944492A2
    • 2008-07-16
    • EP07024811.7
    • 2007-12-20
    • Hitachi, Ltd.
    • Mayuzumi, TakuyaWatanabe, MitsuhikoOura, Ryoichi
    • F02D41/20F02D41/22
    • F02D41/20F02D41/221F02D2041/2003F02D2041/2041F02D2041/2058F02D2041/2082F02D2041/2086
    • An internal combustion engine controller has: a voltage booster circuit (100) for boosting a battery power source (1); a booster side driver element (202) for flowing a current through the injectors (3-1, 3-2) by using the boosted voltage; a battery side driver element (212) disposed in parallel with the booster side driver element to flow a current through the injectors by using the battery power source; a first downstream side driver element (220) provided by controlling currents flowing through the injectors; current regeneration diodes (2-1, 2-2) for flowing currents from the downstream side to the upstream side of the injectors; a booster side current detector resistor (201) for detecting currents flowing via the current regeneration diodes; and an injector control circuit (240) for controlling and driving the booster side driver element, battery side driver element and first downstream side driver element.
    • 内燃机控制器具有:升压电池电源(1)的升压电路(100) 升压侧驱动元件(202),用于通过使用升高的电压使电流流过喷射器(3-1,3-2); 电池侧驱动元件(212),其与所述升压侧驱动元件并联设置,以通过使用所述电池电源使电流流过所述喷射器; 通过控制流过所述喷射器的电流而提供的第一下游侧驱动器元件(220) 电流再生二极管(2-1,2-2),用于使电流从喷射器的下游侧流向上游侧; 升压侧电流检测电阻(201),用于检测流过电流再生二极管的电流; 和用于控制和驱动升压器侧驱动器元件,电池侧驱动器元件和第一下游侧驱动器元件的喷射器控制电路(240)。
    • 5. 发明公开
    • Electromagnetic load controller
    • ElektromagnetischesLadungssteuergerät
    • EP2085595A2
    • 2009-08-05
    • EP09000276.7
    • 2009-01-12
    • Hitachi Ltd.
    • Oura, RyoichiWatanabe, MitsuhikoMayuzumi, TakuyaOkamoto, Kaneyuki
    • F02D41/20H01F7/18
    • F02D41/20H01F7/1844
    • An internal combustion engine controller (2) that drives an electromagnetic load (5; 103) is provided for improving a fault diagnosis precision of the electromagnetic load (5; 103) and stabilizing a high-speed control without influence of noises (113) even if the drive cycle of the electromagnetic load (5; 103) is short. The internal combustion engine controller (2) has high reliability in a fault diagnosis for a circuit to regenerate counter electromotive energy. The internal combustion engine controller (2) comprises a current source (17, 19, 21) or a voltage source for controlling a potential of the diagnosis position in order to ensure a high-precision fault diagnosis even if the drive cycle of the electromagnetic load (5; 103), such as the fuel injector, in the internal combustion engine is shortened. Diagnosis timing is optimally set or the number of determinations for averaging is increased in order to ensure the high-precision fault diagnosis without being influenced by unexpected disturbance such as noises (113). In the fault diagnosis of the regeneration circuits into the booster circuit (3), an input/output voltage or the regeneration current of a driving switching element of the electromagnetic load (5; 103) is detected.
    • 提供驱动电磁负载(5; 103)的内燃机控制器(2),用于提高电磁负载(5; 103)的故障诊断精度,并稳定高速控制,而不影响噪声(113)甚至 如果电磁负载(5; 103)的驱动周期短。 内燃机控制器(2)在用于再生反电动势的电路的故障诊断中具有高可靠性。 内燃机控制器(2)包括电流源(17,19,21)或用于控制诊断位置的电位的电压源,以便即使电磁负载的驱动周期也能确保高精度的故障诊断 (5; 103),例如燃料喷射器在内燃机中缩短。 为了确保高精度故障诊断而不受诸如噪声的意外干扰(113)的影响,诊断定时被最佳地设定或者平均的确定次数增加。 在升压电路(3)的再生电路的故障诊断中,检测出电磁负载(5; 103)的驱动开关元件的输入/输出电压或再生电流。
    • 8. 发明公开
    • Power-feed control apparatus provided in a vehicle
    • 在einem汽车的Versorgungsüberwachungseinrichtungvorgesehen
    • EP0968871A2
    • 2000-01-05
    • EP99111966.0
    • 1999-06-25
    • Hitachi, Ltd.
    • Okamoto, KaneyukiYoshida, TatsuyaSaito, HiroyukiSakamoto, ShinichiOsaka, Ichiro, Kitakase Mansion 302Watanabe, Mitsuhiko
    • B60L3/04
    • B60L3/04H02H1/043H02H3/006
    • A power-feed control apparatus for a vehicle in which electrical loads (3) are arranged in the vehicle includes a power source (4) provided in a vehicle; at least one power semiconductor element (2), the power semiconductors controlling power-feed to the electrical load (3); a control unit (1) for controlling the power semiconductor element; an anomaly detection circuit for monitoring operations of the power semiconductor element (2) and determining whether or not an anomaly is occurring in a circuit including the power semiconductor element (2) and the electrical load (3); and a switching circuit (160) for switching a threshold level between a level for an anomaly detection in a starting period of the load (3) and that in a steady state of the load (3) connected to the power semiconductor element (2); wherein if an anomaly is detected in the circuit (160) by the anomaly detection circuit, the control unit (1) turns off the power semiconductor element (2) so as to interrupt power-feed to the electrical load (3).
    • 一种用于车辆中的电力负载(3)布置在车辆中的供电控制装置,包括设置在车辆中的电源(4) 至少一个功率半导体元件(2),所述功率半导体控制对所述电负载(3)的供电; 控制单元(1),用于控制功率半导体元件; 用于监视功率半导体元件(2)的操作的异常检测电路,并确定在包括功率半导体元件(2)和电负载(3)的电路中是否发生异常。 以及切换电路(160),用于在负载(3)的起始时段和连接到功率半导体元件(2)的负载(3)的稳定状态下的异常检测的电平之间切换阈值电平, ; 其中如果异常检测电路在电路(160)中检测到异常,则控制单元(1)关闭功率半导体元件(2),从而中断对电负载(3)的供电。
    • 10. 发明公开
    • Magnetic recording and reproducing unit
    • 磁记录和复制单元
    • EP0563841A3
    • 1994-06-29
    • EP93105136.1
    • 1993-03-29
    • HITACHI, LTD.
    • Watanabe, MitsuhikoOkada, YoshinoriTanaka, MasahiroKudo, Mitsuru
    • H04N5/92
    • H04N5/78263G11B15/125G11B15/1875H04N5/783
    • A video recording and reproducing unit of the helical scan type having a slow speed tape running mode is provided. This unit has a pair of azimuth heads (20,21) of mutually different angles which are mutually adjacently disposed on the outer periphery of a rotating cylinder (19) and another pair of azimuth heads (22,23) of mutually different angles which are mutually adjacently disposed at positions symmetrical to the first pair of azimuth heads (20,21) with respect to the rotation axis. Each of the two pairs alternately traces the tracks on a magnetic tape (18) to reproduce the recorded video signals. Further, the unit has a control head (24) for reproducing a control signal (CTL) which is synchronous with a header position of the recorded tracks, a traced azimuth predicting signal generating unit (8) for generating a predetermined azimuth change over signal (AZP) in response to the control signal (CTL), and a switching unit (13,4) for selecting one of the reproduced image signals from the pair of azimuth heads according to the change over signal (AZP) in the slow speed running mode. Further, the present recorder has units (32d,32e) for comparing envelope levels of reproduced image signals from each pair of the heads to detect the head of the larger envelope, and switching units (32b,32c) for holding the selection of the signal with the larger envelope level while a pair of the heads is scanning the tracks until the tracing by this pair of heads is replaced by the tracing by the other pair of heads during the slow speed running mode.
    • 本发明提供一种具有慢速磁带运行模式的螺旋扫描类型的磁记录和再现单元,其中运行磁带的速度比标准运行模式慢。 本发明的磁记录和重放装置具有相互不同的方位角的一对方位角(20,21),它们彼此相邻设置在旋转圆筒(19)的外周上,另一对方位角(22) 相对于旋转圆筒的旋转中心相互相邻地设置在与第一对方位头对准的位置处的彼此不同的方位角的相对于第二对角方向角的方向角。 两对方位角中的每一对交替地在磁带(18)上跟踪记录有图像信号的轨迹,以再现记录的图像信号。 此外,本发明的磁记录和再现单元具有用于从磁带(18)再现与记录轨道的报头位置同步的控制信号(CTL)的控制头(24),跟踪的方位角预测 用于响应于所述控制信号(CTL)产生预定的信号方向转换(AZP)的信号产生单元(8),以及用于从所述一对方位头中选择一个再现图像信号的切换单元(13,4) 到慢速运行模式下的变化信号(AZP)。 此外,本发明的磁记录再现装置具有用于比较从每对头再现的再现图像信号的包络电平并检测较大信封的头部的单元(32d,32e)和切换单元 32b,32c),用于在一对头扫描所记录的轨道时保持对来自较大包络线的方位角的再现图像信号的选择,直到由该对头的跟踪被追踪 当以慢速运行模式记录的信号将以慢速运行模式再现时,另一对磁头。