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    • 44. 发明授权
    • Control device and pitch angle control method
    • 控制装置和俯仰角控制方法
    • US08437926B2
    • 2013-05-07
    • US13634494
    • 2012-01-06
    • Satoru ShintaniTomohiro NakagawaRyouichi Nagasaka
    • Satoru ShintaniTomohiro NakagawaRyouichi Nagasaka
    • G06F19/00
    • E02F9/2228E02F3/844E02F9/2296
    • A control device for automatically controlling a pitch angle of a blade includes a hydraulic oil amount calculation unit and an open ratio setting unit. The hydraulic oil amount calculation unit is configured to calculate an amount of hydraulic oil passing through a blade tilt cylinder valve. The open ratio setting unit is configured to cause the blade tilt cylinder valve to open at a predetermined open ratio when a request for the pitch angle to be changed has been received, to cause the blade tilt cylinder valve to close when the calculated amount of hydraulic oil has reached a predetermined amount of hydraulic oil required for the change of the tilt angle, and to cause the open ratio to be smaller than the predetermined open ratio while a request for a predetermined action necessitating that hydraulic oil be supplied from a main valve is being received.
    • 用于自动控制叶片的俯仰角的控制装置包括液压油量计算单元和开度比设定单元。 液压油量计算单元构成为计算通过叶片倾斜缸阀的液压油量。 打开比率设定单元被配置为当已经接收到要改变的俯仰角的请求时使叶片倾斜缸阀以预定的开度比打开,以使得当计算出的液压量时,叶片倾斜缸阀关闭 油已达到改变倾斜角所需的预定量的液压油,并且使得打开比率小于预定打开比,同时需要从主阀供应液压油的预定动作的请求是 被收到
    • 48. 发明申请
    • Control Apparatus and Control Method for Hydraulically Driven Cooling Fan
    • 液压驱动冷却风扇的控制装置及控制方法
    • US20090120386A1
    • 2009-05-14
    • US11922835
    • 2006-07-06
    • Mitsuhiko KamadoShigeru YamamotoTomohiro Nakagawa
    • Mitsuhiko KamadoShigeru YamamotoTomohiro Nakagawa
    • F01P7/04F15B11/04
    • F01P7/044F01P5/043
    • An invention relating to a control apparatus and a control method for a hydraulically driven cooling fan for reducing the peak pressure produced upon reversing the switch position of a switching valve, without stopping an engine, and without greatly modifying existing hydraulic circuitry or increasing the apparatus cost. In the invention, in the case that a reversing switch has been operated so as to output a reversal processing commencement instruction signal, control is carried out such that, under the condition that the rotational speed of the engine has decreased to not more than a stipulated rotational speed, capacity adjusting means is controlled, so as to reduce the capacity of a hydraulic pump, and thus reduce the fan rotational speed, and then the switch position of the switching valve is reversed.
    • 一种用于液压驱动的冷却风扇的控制装置和控制方法的发明,用于在不停止发动机的情况下减小在切换阀的开关位置反转时产生的峰值压力,并且不会大大改变现有的液压回路或增加设备成本 。 在本发明中,在反转开关被操作以输出反转处理开始指示信号的情况下,进行控制,使得在发动机的转速降低到规定值以下的条件下 旋转速度,容量调节装置被控制,以便降低液压泵的容量,从而降低风扇转速,然后切换阀的开关位置反转。