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    • 2. 发明授权
    • Hydraulic fluid supply system with variable pump-displacement arrangement
    • 具有可变泵排量布置的液压油供应​​系统
    • US4597718A
    • 1986-07-01
    • US741582
    • 1985-06-05
    • Hiromichi NakanoHideaki SasayaMitsuo Inagaki
    • Hiromichi NakanoHideaki SasayaMitsuo Inagaki
    • B62D5/07B62D6/00B62D6/02F04C14/02F04C14/26F04B49/08
    • F04C14/02B62D6/00
    • Hydraulic fluid supply system for supplying high pressure hydraulic fluid to power actuators for power steering systems includes a pumping mechanism having independent pumping chambers adapted to discharge fluid to a supply line leading to the power actuator. The supply line contains a variable orifice and a flow control valve responsive to the pressure difference generated by the variable orifice. The pumping chambers include at least first and second pumping chambers connected to first and second feed lines. A switching valve operatively interconnected to the variable orifice and actuated by an electrically operable drive mechanism selectively connects the second feed line to the supply line or to the first feed line. When the drive mechanism shifts the switching valve so that the second feed line leading to the second pumping chamber is switched from the first feed line to communicate with the supply line, a part of the high pressure fluid flowing through the fluid line is returned to the second pumping chamber by bypassing the power actuator thereby disabling the second pumping chamber and reducing the flow rate of the fluid flowing to the power actuator. Disablement of the second pumping chamber during "drooping" reduces the effective overall displacement capacity of the pumping mechanism thereby saving a considerable amount of power. The system may be electronically controlled depending on various operational conditions of the vehicle and the like.
    • 用于供应高压液压流体以供动力转向系统的致动器的液压流体供应系统包括具有独立泵送室的泵送机构,其适于将流体排放到通向功率致动器的供应管线。 供应管线包含可变孔口和响应于可变孔口产生的压力差的流量控制阀。 泵送室包括至少连接到第一和第二馈送线的第一和第二泵送室。 可操作地互连到可变孔口并由电可操作的驱动机构致动的切换阀将第二进料管线选择性地连接到供应管线或第一进料管线。 当驱动机构移动切换阀使得通向第二泵送室的第二供给管线从第一供给管线切换到与供给管路连通时,流过流体管线的高压流体的一部分返回到 第二泵室通过旁路动力致动器,从而禁用第二泵送室并降低流向动力致动器的流体的流量。 在“下垂”期间,第二抽吸室的失效降低了泵送机构的有效整体排量,从而节省了相当大的功率。 该系统可以根据车辆的各种操作条件等进行电子控制。
    • 4. 发明授权
    • Purging agent and purging method
    • 清洗剂和清洗方法
    • US06294120B1
    • 2001-09-25
    • US08877878
    • 1997-06-18
    • Taichi NegiSyukiti KawamuraHiromichi NakanoSatoshi Hirofuji
    • Taichi NegiSyukiti KawamuraHiromichi NakanoSatoshi Hirofuji
    • B28B320
    • B29C47/0877B29C47/0021B29C47/0026
    • A purging agent which contains an ethylene-vinyl alcohol copolymer and which satisfies the conditions specified by the equations (1) and (2) below: 20≧BT(120)≧0.1  (1) 500≧BT(250)/BT(120)≧1.5  (2), where BT(120) is weight loss (%) on heating in nitrogen at 120° C. for 24 hours, and BT(250) is weight loss (%) on heating in nitrogen at 250° C. for 6 hours, rapidly discharges residual thermoplastic resin containing EVOH from molding equipment, and also rapidly discharges itself when a fresh resin is fed again to the equipment. This leads to a remarkable reduction in loss due to residual purging agent. In addition, the purging agent causes only a small amount of resin to stick to the equipment, even after repeated purging. After purging, it is possible to restore normal operation within a short period of time.
    • 含有乙烯 - 乙烯醇共聚物的清洗剂,其满足以下等式(1)和(2)所规定的条件:其中BT(120)是在120℃下在氮气中加热时的重量损失(%), 24小时,BT(250)在250℃氮气中加热6小时时的重量损失(%),从成型设备中快速排出含有EVOH的残留热塑性树脂,并且在再次进料新鲜树脂时也自动排出 到设备。 这导致残留清洗剂的损失显着降低。 此外,即使在反复吹扫之后,清洗剂也仅使少量树脂粘附到设备。 清洗后,可以在短时间内恢复正常运行。