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    • 3. 发明专利
    • Control device for engine
    • 发动机控制装置
    • JP2012013019A
    • 2012-01-19
    • JP2010151117
    • 2010-07-01
    • Hitachi Automotive Systems Ltd日立オートモティブシステムズ株式会社
    • SHISHIDO KENTARO
    • F02M59/34F02D41/32F02M59/36F02M59/46F02M63/02
    • PROBLEM TO BE SOLVED: To provide a control device for engine capable of attaining the actual fuel pressure of a fuel supplied to a fuel injection valve to a desired target fuel pressure (range) to suppress fuel pressure pulsation regardless of a difference between the number of pump drive cam leaves and the number of engine cylinders, and improving responsiveness to a change in the target fuel pressure and robustness to disturbance without increasing an operation load.SOLUTION: This control device includes a first controller setting a feed-forward controlled variable for a solenoid valve provided on a high pressure fuel pump to control a discharge quantity of a fuel discharged from the pump, and a second controller setting a feed-back controlled variable for the solenoid valve. The first controller individually sets the feed-forward controlled variable per compression stroke of the pump, and set the feed-forward controlled variable based on a target injection quantity to be injected from a fuel injection valve from when a pump compression stroke is started to when the next compression stroke is started.
    • 要解决的问题:提供一种用于发动机的控制装置,其能够将供应到燃料喷射阀的燃料的实际燃料压力达到期望的目标燃料压力(范围),以抑制燃料压力脉动,而与 泵驱动凸轮叶片的数量和发动机气缸的数量,并且改善对目标燃料压力的变化的响应性和对干扰的鲁棒性,而不增加操作负载。 解决方案:该控制装置包括:第一控制器,设置用于设置在高压燃料泵上的电磁阀的前馈控制变量,以控制从泵排出的燃料的排放量;以及第二控制器,设定进料 电磁阀的后控制变量。 第一控制器单独地设定每个压缩行程的前馈控制变量,并且基于从燃料喷射阀喷射的目标喷射量,从泵压缩冲程开始到当泵压缩冲程开始时,设定前馈控制变量 下一个压缩行程开始。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • Fuel injection device for internal combustion engine
    • 用于内燃机的燃油喷射装置
    • JP2011052539A
    • 2011-03-17
    • JP2009199203
    • 2009-08-31
    • Hitachi Automotive Systems Ltd日立オートモティブシステムズ株式会社
    • SHISHIDO KENTARONAGASE MITSURUNANAO YUICHIROKOMORIDA HIRONARI
    • F02M55/02F02M37/00F02M59/46
    • Y02T10/123
    • PROBLEM TO BE SOLVED: To solve such problems that abnormal fuel pressure results from impossibility to fully discharge fuel in a common rail and that excess fuel pressure drop and not intended engine stall result from excessive fuel discharge the other way around if an electric control relief valve and a mechanical relief valve are not cooperatively controlled well when a method compensating flow rate shortage by the mechanical relief valve is employed in a structure in which flow rate of the electric control relief valve is short with respect to whole delivery flow rate of a high pressure fuel pump. SOLUTION: In a high pressure fuel system including the mechanical relief valve and the electric control relief valve, operation of the electric control relief valve is started after pressure reaches the value at which the mechanical relief valve starts operation or higher so as to make the mechanical relief valve sufficiently operate at full delivery of the high pressure fuel pump. Discharge is done by using both of the mechanical relief valve and the electric control relief valve thereby. Flow rate of the electric control relief valve is controlled based on pressure characteristics of a case that only the mechanical relief valve is operated in full delivery of the high pressure fuel pump during operation of the electric control relief valve. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了解决由于不可能在共轨中完全排出燃料而产生异常燃料压力,并且由于过量的燃料排放导致过量的燃料压力下降而导致燃料排放过大, 在电控溢流阀的流量相对于整个输送流量的短路的结构中采用了通过机械安全阀来补偿流量不足的方法时,控制溢流阀和机械安全阀不能协调控制 高压燃油泵。

      解决方案:在包括机械安全阀和电动安全阀的高压燃料系统中,在压力达到机械安全阀开始运行或更高的值之后,电动安全阀的运行开始,以便 使机械安全阀在高压燃油泵完全输送时充分运行。 通过使用机械安全阀和电动安全阀两者进行排放。 基于在电气控制安全阀的运行期间只有机械安全阀在高压燃料泵完全输送的情况下的压力特性来控制电动安全阀的流量。 版权所有(C)2011,JPO&INPIT

    • 5. 发明专利
    • Device for controlling drive of solenoid valve
    • 用于控制电磁阀驱动的装置
    • JP2011032922A
    • 2011-02-17
    • JP2009179237
    • 2009-07-31
    • Hitachi Automotive Systems Ltd日立オートモティブシステムズ株式会社
    • NANAO YUICHIROKOMORIDA HIRONARISHISHIDO KENTARO
    • F02D41/20
    • PROBLEM TO BE SOLVED: To provide a device for controlling drive of a solenoid valve securing a desired flow rate while inhibiting an excessive temperature rise of a circuit part outputting a drive signal of the solenoid valve for fluid control.
      SOLUTION: The device for controlling drive of the solenoid valve includes the circuit part for, in order to open and close the solenoid valve 6 at predetermined timing, first outputting a peak current (Ipeak) allowing opening of the valve and then outputting a hold current (Ihold) smaller than the peak current. When the temperature of the circuit part is equal to or higher than a predetermined temperature, the device for controlling drive of the solenoid valve limits the magnitude of the peak current to a predetermined value (13A→11A) and advances output starting timing of the peak current by a predetermined time (ADV).
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于控制确保所需流量的电磁阀的驱动的装置,同时抑制输出用于流体控制的电磁阀的驱动信号的电路部分的过度温度升高。 解决方案:用于控制电磁阀驱动的装置包括电路部分,为了在预定时刻打开和关闭电磁阀6,首先输出允许阀打开的峰值电流(Ipeak),然后输出 保持电流(Ihold)小于峰值电流。 当电路部分的温度等于或高于预定温度时,用于控制电磁阀驱动的装置将峰值电流的大小限制在预定值(13A→11A),并使峰值的输出开始定时 电流达预定时间(ADV)。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Engine misfire detection device
    • 发动机缺陷检测装置
    • JP2011058469A
    • 2011-03-24
    • JP2009211212
    • 2009-09-14
    • Hitachi Automotive Systems Ltd日立オートモティブシステムズ株式会社
    • KOMORIDA HIRONARIMISHIRO KEIICHINANAO YUICHIROSHISHIDO KENTARO
    • F02D45/00
    • PROBLEM TO BE SOLVED: To enable engine misfire detection during light load operation and prevent wrong detection in both of normal electric power generation and low electric power generation of an alternator during which no load intake pipe pressures are different.
      SOLUTION: This engine misfire detection device detecting an engine misfire state includes an intake pipe pressure detection means detecting pressure in an engine intake pipe, and an engine misfire detection prohibition means prohibiting engine misfire detection when pressure detected by the intake pipe pressure detection means is lower than the no load intake pipe pressure. The engine misfire detection device includes an alternator electric power generation state detection means detecting an electric power generation state of the alternator by parameters relating to alternator load, and an engine misfire detection prohibition zone change over means changing over engine misfire prohibition means threshold value according to the alternator electric power generation state detected by the alternator electric power generation state detection means.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了在轻载操作期间能够进行发动机失火检测,并且在无负载进气管压力不同的情况下,在正常发电和交流发电机的低发电两者中都能够防止错误检测。 检测发动机失火状态的发动机失火检测装置包括:检测发动机进气管中的压力的​​进气管压力检测装置,以及当由进气管压力检测检测到的压力时禁止发动机失火检测的发动机失火检测禁止装置 手段低于空载进气管压力。 发动机失火检测装置包括通过与交流发电机负载相关的参数来检测交流发电机的发电状态的交流发电机发电状态检测装置,以及根据发动机失火检测禁止区域改变发动机失火禁止装置的阈值的装置 由交流发电电力产生状态检测装置检测的交流发电机发电状态。 版权所有(C)2011,JPO&INPIT