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    • 3. 发明授权
    • Variable lift valve operating system for internal combustion engine
    • 内燃机可变提升阀操作系统
    • US07281505B2
    • 2007-10-16
    • US11480564
    • 2006-07-05
    • Hiroyuki MuraseTakahumi MizorogiHidetaka Ozawa
    • Hiroyuki MuraseTakahumi MizorogiHidetaka Ozawa
    • F01L1/34
    • F01L13/00F01L13/0026
    • In a variable lift valve operating system for an internal combustion engine, an actuator for rotatably driving a control shaft of a variable lift mechanism is mounted on an engine body. The actuator includes an electric motor, a deceleration mechanism, a transmission mechanism interposed between the control shaft and the deceleration mechanism, and a default mechanism. A deceleration mechanism accommodation part for accommodating the deceleration mechanism and a default mechanism accommodation part for accommodating the default mechanism are formed in a casing of the actuator so as to sandwich therebetween a thermally vulnerable part which is directly connected to the control shaft. Therefore, it is possible to enhance the degree of freedom of amounting position of the actuator while heat damage is prevented from generating in the thermally vulnerable part of the actuator.
    • 在用于内燃机的可变提升阀操作系统中,用于可旋转地驱动可变提升机构的控制轴的致动器安装在发动机主体上。 致动器包括电动机,减速机构,设置在控制轴和减速机构之间的变速机构,以及默认机构。 在致动器的壳体中形成有用于容纳减速机构的减速机构容纳部和用于容纳默认机构的默认机构容纳部,以将它们夹在其间直接连接到控制轴的耐热脆性部。 因此,可以提高致动器的位置自由度,同时防止在致动器的热脆性部分中产生热损伤。
    • 5. 发明授权
    • Controller for controlling an electromagnetic actuator
    • 用于控制电磁执行器的控制器
    • US06925975B2
    • 2005-08-09
    • US10068031
    • 2002-02-06
    • Hidetaka OzawaKenji AbeYoshitomo KounoMinoru NakamuraToshihiro YamakiYasuo Shimizu
    • Hidetaka OzawaKenji AbeYoshitomo KounoMinoru NakamuraToshihiro YamakiYasuo Shimizu
    • F01L9/04F02D13/02F02D41/20F16K31/06H01F7/16H01F7/18
    • F01L9/04F01L2009/0436F02D13/0207F02D13/0253F02D41/20F02D2041/001Y02T10/18
    • A controller for an electromagnetic actuator comprises a pair of springs acting on opposite directions, and an armature connected to the springs. The armature is held in a neutral position given by the springs when the armature is not activated. The actuator also comprises a pair of electromagnets for driving the armature between two end positions. In response to a release of the armature held in one of the end positions, the controller applies brake to the armature according to a load condition of the armature. In high-load conditions, the valve can surely be opened without additional electric power. In low-load conditions, the armature is prevented from colliding with a yoke of the electromagnet. The application of brake includes over-excitation operation, flywheel operation and suspension of power supply. In the over-excitation operation, voltage is applied to the electromagnet corresponding to one of the end positions from which the armature is released for a first period. The first period may be determined according to a load condition of the armature. After the first period elapses, flywheel current is supplied to the electromagnet for a second period. After the second period elapses, power supply to the electromagnet is suspended. Appropriate combination of over-excitation operation, flywheel operation and suspension of power supply allows the braking force to be adjusted according to a load condition of the armature.
    • 用于电磁致动器的控制器包括作用在相反方向上的一对弹簧和连接到弹簧的电枢。 当电枢未激活时,电枢被保持在弹簧给定的中立位置。 致动器还包括用于在两个端部位置之间驱动电枢的一对电磁体。 响应于保持在一个端部位置的电枢的释放,控制器根据电枢的负载条件向电枢施加制动。 在高负载条件下,阀门可以无需额外的电力就能打开。 在低负载条件下,防止电枢与电磁铁的轭碰撞。 制动器的应用包括过励磁运行,飞轮运行和电源暂停。 在过激励操作中,电压被施加到对应于电枢被释放第一周期的端部位置之一的电磁体。 可以根据电枢的负载条件来确定第一周期。 经过第一个时间段后,飞轮电流供应给电磁铁第二个周期。 第二个时期过后,电磁铁供电暂停。 过励磁运行,飞轮运行和电源暂停的适当组合允许根据电枢的负载条件来调节制动力。
    • 6. 发明授权
    • Actuator controller
    • 执行器控制器
    • US06549390B1
    • 2003-04-15
    • US09670347
    • 2000-09-27
    • Hidetaka OzawaMinoru Nakamura
    • Hidetaka OzawaMinoru Nakamura
    • H01H4700
    • F02D41/0002F01L9/04F02D13/0207F02D13/0253F02D2041/001F02D2041/2034F02D2041/2062F02D2041/2079Y02T10/42
    • An electromagnetic actuator for driving a valve of an engine comprises a pair of springs which act in opposite directions, an armature which is connected to the springs and is supported in a neutral position provided by the pair of springs in an inactivated state, the armature being coupled to the valve, a pair of electromagnets which drive the armature between a valve open position and a valve closed position, estimating means for estimating magnetic flux to be generated by the electromagnet attracting the armature when the armature is driven from one of the positions to the other of the positions, and means for switching the electromagnet from the attractive operation to the holding operation in response to the magnetic flux reaching the target overshoot value.
    • 用于驱动发动机的阀的电磁致动器包括一对沿相反方向作用的弹簧,电枢连接到弹簧并被支撑在处于非激活状态的一对弹簧提供的中立位置,电枢是 耦合到所述阀,一对电磁体,其在阀打开位置和阀关闭位置之间驱动所述电枢;估计装置,用于估计当所述电枢从其中一个位置被驱动时所述电磁体吸引所述电磁体产生的磁通量; 另一个位置,以及响应于达到目标过冲值的磁通量将电磁铁从吸引操作切换到保持操作的装置。
    • 7. 发明授权
    • Vibration/noise control system
    • 振动/噪音控制系统
    • US5544080A
    • 1996-08-06
    • US189912
    • 1994-02-01
    • Toshiaki KobayashiHidetaka Ozawa
    • Toshiaki KobayashiHidetaka Ozawa
    • G10K11/178G01H17/00
    • G10K11/1784G10K2210/114G10K2210/1282G10K2210/3032G10K2210/3033G10K2210/3045G10K2210/3051G10K2210/3211
    • A sine wave signal generated in synchronism with a pulse signal determining a frequency of vibrations and noises generated by a vibration/noise source is input to a W filter and a C filter. The C filter selects filter coefficients dependent on the rotational speed of an engine, and generates a transfer characteristic-dependent reference signal R dependent on a transfer characteristic of a vibration/noise-transmitting path, based on the filter coefficients. Alternatively, a divisional signal is prepared by dividing a repetition period of vibrations and noises by a predetermined number, and values of a sine wave generated in synchronism with occurrence of said divisional signal is delivered to a W filter, while the transfer characteristic-dependent reference signal is delivered from the C filter storing data of the transfer characteristic identified in advance to the W filter. Alternatively, a sine wave signal and a delayed sine wave signal delayed by a quarter of a repetition period of the sine wave relative to the sine wave, as well as phase and amplitude-related information of the transfer characteristic of the path are generated and delivered in synchronism with generation of the divisional signal. These sine wave signals and the transfer characteristic-dependent reference signal (phase and amplitude-related information) are used to actively control the vibrations and noises.
    • 与确定由振动/噪声源产生的振动频率和噪声的脉冲信号同步产生的正弦波信号被输入到W滤波器和C滤波器。 C滤波器根据发动机的转速选择滤波器系数,并且基于滤波器系数,产生取决于振动/噪声传输路径的传递特性的传递特性相关参考信号R. 或者,通过将振动和噪声的重复周期除以预定数量来准备分割信号,并且与所述分割信号的出现同步地产生的正弦波的值被传送到W滤波器,而传输特性相关参考 信号从存储了预先识别的传送特性的数据的滤波器传送到W滤波器。 或者,生成并传送正弦波信号和延迟正弦波相对于正弦波的四分之一重复周期的延迟正弦波信号,以及路径的传输特性的相位和幅度相关信息 与分割信号的产生同步。 这些正弦波信号和传递特性相关参考信号(相位和幅度相关信息)用于主动控制振动和噪声。
    • 10. 发明申请
    • Fuel injection device, fuel injection control device, and control method of fuel injection device
    • 燃油喷射装置,燃料喷射控制装置以及燃料喷射装置的控制方法
    • US20070284456A1
    • 2007-12-13
    • US11802574
    • 2007-05-23
    • Tadao TsuchiyaManabu ShoujiTsukasa NaganumaYasuharu HouraiKenichi OmoriKazuhito KakimotoHidetaka Ozawa
    • Tadao TsuchiyaManabu ShoujiTsukasa NaganumaYasuharu HouraiKenichi OmoriKazuhito KakimotoHidetaka Ozawa
    • B05B3/04
    • F02M51/0603F02M51/0653F02M63/0063
    • To provide a fuel injection device for controlling a fuel injection valve including a solenoid and a magnetostrictive element to generate a drive force for driving the fuel injection valve, the fuel injection device including: a solenoid power source (31) for driving the solenoid, a solenoid drive circuit (10) adapted to control the electrification to the solenoid by the solenoid power source (31), a plurality of magnetostrictive element driving power sources (32, 33) for driving the magnetostrictive element, and a magnetostrictive element drive circuit (20) adapted to control the electrification to a magnetostrictive coil of the magnetostrictive element by the magnetostrictive element driving power sources. Since the plurality of the magnetostrictive element driving power sources can be respectively used when performing a valve-opening operation and when performing a valve-closing operation of the fuel injection valve of the fuel injection device, the opening/closing operation of the fuel injection valve of the fuel injection device can be properly performed.
    • 为了提供一种用于控制包括螺线管和磁致伸缩元件的燃料喷射阀的燃料喷射装置,以产生用于驱动燃料喷射阀的驱动力,该燃料喷射装置包括:用于驱动螺线管的螺线管电源(31) 螺线管驱动电路(10),其适于通过螺线管电源(31)控制对螺线管的通电,用于驱动磁致伸缩元件的多个磁致伸缩元件驱动电源(32,33)和磁致伸缩元件驱动电路(20 )适于通过磁致伸缩元件驱动电源来控制对磁致伸缩元件的磁致伸缩线圈的通电。 由于在进行开阀动作时以及在进行燃料喷射装置的燃料喷射阀的关闭动作时可以分别使用多个磁致伸缩元件驱动动力源,所以燃料喷射阀的开闭动作 的燃料喷射装置。