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    • 2. 发明申请
    • Injector Drive Circuit
    • 喷油器驱动电路
    • US20120194961A1
    • 2012-08-02
    • US13363414
    • 2012-02-01
    • Shigeki YamadaTakuya MayuzumiMitsuhiko WatanabeAyumu Hatanaka
    • Shigeki YamadaTakuya MayuzumiMitsuhiko WatanabeAyumu Hatanaka
    • H01H47/00
    • F02D41/20F02D2041/2058
    • An injector drive circuit including: a step-up circuit generating a high voltage from a power supply; a first switching device connected to a path between the step-up circuit and an injector; a second switching device connected to the power supply; a third switching device connected between the injector and the ground; and a control unit operating the first, second and third switching device according to a value of current flowing through the injector; wherein the control unit has a unit turning on and off the second switching device in a period during which it turns on and off the first switching device a plurality of times; wherein the control unit has, as set values to control the current flowing through the injector, a first threshold defining a lower current limit, a second threshold defining an upper current limit and a third threshold, larger than the second threshold.
    • 一种喷射器驱动电路,包括:从电源产生高电压的升压电路; 连接到升压电路和喷射器之间的路径的第一开关装置; 连接到所述电源的第二开关装置; 连接在喷射器和地面之间的第三开关装置; 以及控制单元,其根据流过所述喷射器的电流的值来操作所述第一,第二和第三开关装置; 其中所述控制单元具有在第一开关装置多次接通和断开的期间内接通和断开所述第二开关装置的单元; 其中,所述控制单元具有作为控制流过所述喷射器的电流的设定值,所述第一阈值定义了大于所述第二阈值的限定较低电流限制的第一阈值,限定上限电流和第三阈值的第二阈值。
    • 3. 发明授权
    • High-pressure fuel pump drive circuit for engine
    • 发动机高压燃油泵驱动电路
    • US07881035B2
    • 2011-02-01
    • US11833677
    • 2007-08-03
    • Nobuyuki TakahashiTakashi OkamotoTakuya Mayuzumi
    • Nobuyuki TakahashiTakashi OkamotoTakuya Mayuzumi
    • H01H9/00
    • F02D41/20F02D41/406F02D2041/2041F02M59/466F02M2037/085F04B49/06F04B49/10H01F7/1811
    • There is provided a high-pressure fuel pump drive circuit for manipulating the electric current to be passed to a solenoid coil for controlling a high-pressure pump. This circuit is characterized in that a first switching element, the solenoid coil and a second switching element are connected in series with each other in a rout from a source voltage side to the ground side, that a flywheel diode for passing electric current to a power source is disposed parallel with the solenoid and with the first switching element, and that a Zener diode connected with the power source is disposed parallel with the second switching element, wherein a counter electromotive force to be developed at the opposite ends of solenoid coil on the occasion when the second switching element is changed from ON to OFF is consumed by the flywheel diode provided that the first switching element is in a state of ON, and the counter electromotive force is more rapidly consumed by the Zener diode provided that the first switching element is turned OFF.
    • 提供了用于操纵要通过到用于控制高压泵的螺线管线圈的电流的高压燃料泵驱动电路。 该电路的特征在于,第一开关元件,螺线管线圈和第二开关元件在从源极电压侧到接地侧的路径中彼此串联连接,用于将电流传递到电力的续流二极管 源极与螺线管和第一开关元件平行设置,并且与电源连接的齐纳二极管与第二开关元件平行设置,其中在电磁线圈的相对端处形成的反电动势 只要第一开关元件处于ON状态,并且反电动势被齐纳二极管更快地消耗,则由续流二极管消耗第二开关元件由ON变为OFF的情况,只要第一开关元件 关闭。
    • 4. 发明申请
    • Internal Combustion Engine Controller
    • 内燃机控制器
    • US20100242920A1
    • 2010-09-30
    • US12708379
    • 2010-02-18
    • Chikara OMORIRyoichi OuraMitsuhiko WatanabeTakuya Mayuzumi
    • Chikara OMORIRyoichi OuraMitsuhiko WatanabeTakuya Mayuzumi
    • F02M51/00G01M15/04
    • F02D41/20F02D41/221F02D2041/2003F02D2041/2006F02D2041/201F02D2041/2017F02D2041/2031F02D2041/2048F02D2041/2058Y02T10/40
    • There is provided an internal combustion engine controller that realizes a reduction in maximum current value and current regulation without sacrificing boost performance. An internal combustion engine controller 100 comprises: a boost coil 101 configured to boost a voltage VB of a battery power source; a boost switch element 106 configured to switch between causing a current to flow and stopping a current from flowing through the boost coil 101; and a current detection portion 126 configured to detect a current flowing through the boost switch element 106, wherein boost control is effected by repeating the switching of the switch element, the voltage boosted at the boost coil 101 is charged to a boost capacitor 103 via a diode 104, and, during the boost control, the internal combustion engine controller 100 makes the boost switch element 106 stop the current flowing through the boost coil 101 when the detected current reaches a switching stop current value and, after a predetermined set time Tdown has elapsed from the point at which current flow is stopped, makes the boost switch element 106 cause a current to flow through the boost coil 101.
    • 提供了一种内燃机控制器,其实现了最大电流值和电流调节的降低,而不牺牲升压性能。 内燃机控制器100包括:升压线圈101,被配置为升高电池电源的电压VB; 升压开关元件106,被配置为在引起电流流动并停止电流流过升压线圈101之间切换; 以及被配置为检测流过升压开关元件106的电流的电流检测部分126,其中通过重复开关元件的切换来实现升压控制,在升压线圈101处升压的电压经由升压电容器103经由 二极管104,并且在升压控制期间,当检测到的电流达到开关停止电流值时,内燃机控制器100使升压开关元件106停止流过升压线圈101的电流,并且在预定设定时间Tdown具有 从电流停止的时刻开始,升压开关元件106使电流流过升压线圈101。
    • 5. 发明授权
    • Fuel injection control apparatus
    • 燃油喷射控制装置
    • US07789073B2
    • 2010-09-07
    • US12339496
    • 2008-12-19
    • Takao MiyakeMasahiro ToyoharaTakuya MayuzumiTohru IshikawaRyoichi Oura
    • Takao MiyakeMasahiro ToyoharaTakuya MayuzumiTohru IshikawaRyoichi Oura
    • F02M51/00
    • F02D41/20F02D2041/2044F02D2041/2058
    • A fuel injection control apparatus is capable of reducing a minimum quantity of fuel injection without reducing a maximum quantity of injection. To open a fuel injector valve, a driving circuit supplies an electric current from a high-voltage power supply to the fuel injector. Then, after valve opening, the high-voltage power supply is switched to a low-voltage power supply, and an open state of the valve is retained. For opening the valve of the fuel injector, a microcomputer, after supplying current from the high-voltage power supply to the injector, discharges the current rapidly for a decrease below a first current level at which the open state of the valve cannot be retained. The microcomputer then controls the supply current to the injector so as to supply a current at a second current level at which the open state of the valve can be retained.
    • 燃料喷射控制装置能够在不减少最大喷射量的情况下减少燃料喷射的最小量。 为了打开燃料喷射阀,驱动电路将来自高压电源的电流提供给燃料喷射器。 然后,在阀打开之后,将高压电源切换到低压电源,并且保持阀的打开状态。 为了打开燃料喷射器的阀,微型计算机在从高压电源向喷射器提供电流之后,迅速地将电流放电到低于不能保持阀的打开状态的第一电流水平的下降。 微型计算机然后控制到喷射器的供应电流,以便以可以保持阀的打开状态的第二电流水平提供电流。
    • 9. 发明申请
    • Internal Combustion Engine Controller
    • 内燃机控制器
    • US20080289607A1
    • 2008-11-27
    • US11958096
    • 2007-12-17
    • Takuya MAYUZUMIMitsuhiko WatanabeRyoichi Oura
    • Takuya MAYUZUMIMitsuhiko WatanabeRyoichi Oura
    • F02D41/02F02M51/00
    • F02D41/20F02D41/221F02D2041/2003F02D2041/2041F02D2041/2058F02D2041/2082F02D2041/2086
    • An internal combustion engine controller has: a voltage booster circuit for boosting a battery power source; a booster side driver element for flowing a current through the injectors by using the boosted voltage; a battery side driver element 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 provided by controlling currents flowing through the injectors; current regeneration diodes for flowing currents from the downstream side to the upstream side of the injectors; a booster side current detector resistor for detecting currents flowing via the current regeneration diodes; and an injector control circuit 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:用于升压电池电源的升压电路; 用于通过使用所述升压电压使电流流过所述喷射器的增压器侧驱动元件; 电池侧驱动器元件,其与所述增压器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; 通过控制流过喷射器的电流而提供的第一下游侧驱动元件; 用于从喷射器的下游侧到上游侧的流动的电流再生二极管; 用于检测经由所述电流再生二极管流过的电流的升压器侧电流检测器电阻器; 以及用于控制和驱动增压器侧驱动元件,电池侧驱动元件和第一下游侧驱动元件的喷射器控制电路。