Device for engine speed setting in a working machine
    1.
    发明授权
    Device for engine speed setting in a working machine 失效
    发动机转速设定装置

    公开(公告)号:US4779591A

    公开(公告)日:1988-10-25

    申请号:US887108

    申请日:1986-07-07

    申请人: Lars O Tordenmalm

    发明人: Lars O Tordenmalm

    CPC分类号: F02D41/083 F02B3/06

    摘要: A device for setting the speed of, in particular, an excavator engine which is to operate at a speed adapted to the type of work to be done and is automatically shifted to resting speed when no work is done. In this manner, fuel consumption and the disturbing effect of unnecessarily high noise levels are reduced. The setting device includes simple electronic control units and actuates the fuel-controlling lever of the engine fuel injection unit. A d.c. servo motor is connected to said fuel-controlling level and is supplied with a reference value signal corresponding to the desired engine speed. By manual activation of a push-button on the control lever, the device provides the possibility of manually stepping the engine working speed upwards or downwards to at least three different levels. The device also includes a resting speed unit ("idling unit") having a preset high and preset low resting speed. If the manual control means of the machine are not activated for a given short period of time, the unit provides a high resting speed, and if no manual control means is activated for a further period of time, it provides a low resting speed. On activation of any manual control means, the engine resumes the actual working speed.

    摘要翻译: PCT No.PCT / SE85 / 00439 Sec。 371日期:1986年7月7日 102(e)日期1986年7月7日PCT提交1985年11月6日PCT公布。 出版物WO86 / 02975 日期:1986年5月22日。一种用于设定特定是以适合要完成的工作类型的速度操作的挖掘机的速度的装置,并且在没有工作时自动转移到静止速度。 以这种方式,燃料消耗和不必要的高噪声水平的干扰效应降低。 设置装置包括简单的电子控制单元并且致动发动机燃料喷射单元的燃料控制杆。 一个d.c. 伺服电动机连接到所述燃料控制水平并且被提供有与期望的发动机转速对应的参考值信号。 通过手动激活控制杆上的按钮,该设备提供了将发动机工作速度向上或向下手动降至至少三个不同级别的可能性。 该装置还包括具有预置的高和预设的低静止速度的静止速度单元(“空转单元”)。 如果机器的手动控制装置在给定的短时间内没有被激活,则该单元提供高的静止速度,并且如果没有手动控制装置在一段时间内被激活,则其提供低的静止速度。 在启动任何手动控制装置时,发动机恢复实际工作速度。

    Method for reducing the piston speed, especially in the piston and
cylinder assemblies of an excavating machine, and device for carrying
out the method
    2.
    发明授权
    Method for reducing the piston speed, especially in the piston and cylinder assemblies of an excavating machine, and device for carrying out the method 失效
    用于降低活塞速度的方法,特别是在挖掘机的活塞和气缸组件中,以及用于执行该方法的装置

    公开(公告)号:US4896582A

    公开(公告)日:1990-01-30

    申请号:US216542

    申请日:1988-07-08

    摘要: The invention relates to a method and a device for reducing the piston speed in a piston and cylinder assembly (1), as the piston approaches the end position. The piston end position is sensed, and a signal is generated for starting the end position dampening. Dampening is effected in two steps. In the first step (14), a time delay is provided and in the next step (15), the actual braking (retardation) of the piston is effected.The invention also comprises an electronic braking device comprising a dampening activation unit (13) which is connected to transducers (6), a braking delay unit (14) connected to the unit (13) and also to the control lever (5) at issue and a reference signal source, as well as a braking unit (15) connected to the delay unit (14) and adapted, upon activation, to provide a signal (U) to a setting system (3) for controlling the supply of pressure fluid to the piston and cylinder assembly (1).

    摘要翻译: PCT No.PCT / SE86 / 00003 Sec。 371日期:1988年9月8日 102(e)日期1988年9月8日PCT提交1986年1月8日PCT公布。 公开号WO87 / 04220 日期1987年7月16日。本发明涉及一种当活塞接近终点位置时减小活塞和气缸组件(1)中的活塞速度的方法和装置。 感测到活塞的最终位置,并产生一个信号以启动末端位置的衰减。 阻尼在两个步骤中实现。 在第一步骤(14)中,提供时间延迟,并且在下一步骤(15)中,实现活塞的实际制动(延迟)。 本发明还包括电子制动装置,其包括连接到换能器(6)的阻尼激活单元(13),连接到所述单元(13)的制动延迟单元(14)以及所述控制杆(5) 以及参考信号源,以及连接到延迟单元(14)并且在激活时适于向设定系统(3)提供信号(U)的制动单元(15),用于控制压力流体的供应 到活塞和气缸组件(1)。