Engine Control Device
    3.
    发明申请
    Engine Control Device 有权
    发动机控制装置

    公开(公告)号:US20120304635A1

    公开(公告)日:2012-12-06

    申请号:US13577217

    申请日:2011-02-01

    IPC分类号: F02D29/04

    摘要: A first target engine speed is set in response to a command value commanded by a command unit. A second target engine speed equal to or lower than the first target engine speed is set based on the first target engine speed. When the first target engine speed is reduced, the second target engine speed is set to be constant or be decreased and a reduction range for decreasing the first target engine speed to the second target engine speed is set to be decreased. The reduction range is set at zero when the first target engine speed is equal to or lower than an engine speed at least at a maximum torque point.

    摘要翻译: 响应于由命令单元指令的命令值设定第一目标发动机转速。 基于第一目标发动机转速来设定等于或低于第一目标发动机转速的第二目标发动机转速。 当第一目标发动机转速降低时,将第二目标发动机转速设定为恒定或减小,并且将用于将第一目标发动机转速降低至第二目标发动机转速的减小范围设定为减小。 当第一目标发动机转速等于或低于至少在最大扭矩点处的发动机转速时,减速范围被设定为零。

    Hydraulic circuit system
    5.
    发明授权
    Hydraulic circuit system 失效
    液压回路系统

    公开(公告)号:US5398507A

    公开(公告)日:1995-03-21

    申请号:US856972

    申请日:1992-06-03

    摘要: This invention has for its aim to provide a hydraulic circuit system arranged such that, even at the time of commencement of drive of a hydraulic actuator with a large inertia, a slow rise in the drive pressure can be achieved, thereby preventing the occurrence of hunting phenomenon. The hydraulic circuit system according to the present invention comprises a plurality of operating valves (15) provided in a discharge conduit (10a) of a hydraulic pump (10), and pressure compensating valves (18) provided in connection conduits between these operating valves (15) and respective hydraulic actuators (16), wherein each of the pressure compensating valves (18) is set at a highest value of load pressures of each of the hydraulic actuators (16), and the displacement of the pump is controlled by a change-over valve (14) adapted to be actuated by the difference between the pump discharge pressure and the load pressure. The hydraulic circuit comprises a bypass conduit (31) connected with a load pressure introduction conduit (30) for introducing the load pressure into a pressure receiving portion of the change-over valve (14). This bypass conduit is connected through a bypass valve (32) adapted to conduct throttling of fluid in inverse proportion to the change in the area of opening of each of the operating valves (15).

    摘要翻译: PCT No.PCT / JP91 / 01284第 371日期:1992年6月3日 102(e)日期1992年6月3日PCT 1991年9月26日PCT公布。 出版物WO92 / 06304 本发明的目的在于提供一种液压回路系统,其设置为使得即使在开始具有大惯性的液压致动器的驱动时,也可以实现驱动压力的缓慢上升 ,从而防止发生狩猎现象。 根据本发明的液压回路系统包括设置在液压泵(10)的排出管道(10a)中的多个操作阀(15)和设置在这些操作阀之间的连接管道中的压力补偿阀(18) 15)和相应的液压致动器(16),其中每个压力补偿阀(18)被设置在每个液压致动器(16)的负载压力的最高值,并且泵的位移由变化控制 (14),其适于由泵排出压力和负载压力之间的差异致动。 液压回路包括与负载压力引入导管(30)连接的旁通管道(31),用于将负载压力引入转换阀(14)的受压部分。 该旁通管道通过旁通阀(32)连接,该旁通阀(32)适于与每个操作阀(15)的打开面积的变化成反比地导通流体节流。

    Operation valve with pressure compensation valve
    6.
    发明授权
    Operation valve with pressure compensation valve 失效
    带压力补偿阀的操作阀

    公开(公告)号:US5273069A

    公开(公告)日:1993-12-28

    申请号:US793385

    申请日:1992-03-16

    摘要: An operation valve having a pressure compensation valve of relatively simple non-complicated internal body structure. In the valve body, a load pressure introducing passage, a check valve and a restriction are formed inside the spool comprising the operation valve. An intermediate pressure between an inlet pressure and an outlet pressure of the compensation valve which is arranged in the valve body, may be supplied to a pressure receiving section of the pressure compensation valve through an oil hole of the spool. The operation valve with the pressure compensation valve is of simple construction and may be easily manufactured.

    摘要翻译: PCT No.PCT / JP91 / 00638 Sec。 371日期:1992年3月16日 102(e)1992年3月16日PCT PCT 1991年5月15日提交PCT公布。 出版物WO91 / 18211 PCT 日期为1991年11月28日。具有相对简单的非复杂内部结构的压力补偿阀的操作阀。 在阀体中,在包括操作阀的阀芯内部形成有负载压力引入通道,止回阀和限制器。 布置在阀体中的补偿阀的入口压力和出口压力之间的中间压力可以通过阀芯的油孔供应到压力补偿阀的受压部分。 具有压力补偿阀的操作阀结构简单,制造容易。

    Hydraulic apparatus with pressure compensating valves
    7.
    发明授权
    Hydraulic apparatus with pressure compensating valves 失效
    带压力补偿阀的液压装置

    公开(公告)号:US5271227A

    公开(公告)日:1993-12-21

    申请号:US793395

    申请日:1992-01-09

    摘要: In the hydraulic apparatus (1) according to a first aspect of the present invention, mid-pressures between the inlet side and outlet side pressures of a first and a second pressure compensating valves (4, 4') are permitted to act on the flow rate decreasing side pressure receiving surfaces (4b, 4b') thereof through first and second mid-pressure supplying means (13, 13'), thereby restraining operational error and malfunction of the pressure compensating valves (4, 4'). In the hydraulic apparatus (20) according to a second aspect of the present invention. when actuating valves are made to assume neutral position, holding pressures of hydraulic actuators (5, 5') are permitted to act on flow rate decreasing side pressure receiving surfaces (4b, 4b') of pressure compensating valves (4), (4') so that spools of the pressure compensating valves are held at compensating position, thereby improving the response of the hydraulic actuators (5, 5') to lever actuation.

    摘要翻译: PCT No.PCT / JP91 / 00641 Sec。 371日期1992年1月9日 102(e)日期1992年1月9日PCT 1991年5月15日PCT PCT。 出版物WO91 / 18212 PCT 1991年11月28日,在本发明的第一方面的液压装置(1)中,第一和第二压力补偿阀(4,4')的入口侧和出口侧压力之间的中间压力, 被允许通过第一和第二中压供给装置(13,13')作用在其流量减小侧压力接收表面(4b,4b')上,从而抑制压力补偿阀(4, 4')。 在本发明的第二方面的液压装置(20)中, 当致动阀处于中立位置时,允许液压致动器(5,5')的保持压力作用在压力补偿阀(4),(4')的流量减小侧压力接收表面(4b,4b')上, ),使得压力补偿阀的阀芯保持在补偿位置,从而提高液压致动器(5,5')对杠杆致动的响应。

    Engine control device and engine control method
    9.
    发明授权
    Engine control device and engine control method 有权
    发动机控制装置和发动机控制方式

    公开(公告)号:US09002590B2

    公开(公告)日:2015-04-07

    申请号:US12867577

    申请日:2009-02-18

    摘要: A first target engine speed N1 and a high-speed control area F1 are set according to a command value commanded by a command unit. A second target engine speed N2 and a high-speed control area F2 defined on a low-speed side are set according to the first target engine speed N1. A pump displacement D and an engine torque T of a variable displacement hydraulic pump are detected so that a target engine speed N corresponding to each of the detected pump displacement and engine torque is detected according to a preset relationship between a the pump displacement D and the target engine speed N and a preset relationship between the engine torque T and the target engine speed N during an engine control at the high-speed control area F2. The drive of the engine is controlled so that the engine is driven at the target engine speed N.

    摘要翻译: 根据由命令单元指令的命令值来设定第一目标发动机转速N1和高速控制区域F1。 根据第一目标发动机转速N1设定第二目标发动机转速N2和限定在低速侧的高速控制区域F2。 检测可变排量液压泵的泵排量D和发动机扭矩T,使得根据泵排量D和泵排量D的预设关系来检测与检测到的泵排量和发动机扭矩中的每一个对应的目标发动机转速N 目标发动机转速N和在高速控制区域F2的发动机控制期间的发动机转矩T与目标发动机转速N之间的预设关系。 控制发动机的驱动,使得发动机以目标发动机转速N驱动。