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    HYDRAULIC APPARATUS FOR CONSTRUCTION MACHINES.
    61.
    发明公开
    HYDRAULIC APPARATUS FOR CONSTRUCTION MACHINES. 失效
    液压设备进行施工。

    公开(公告)号：EP0344311A4

    公开(公告)日：1990-03-12

    申请号：EP88900588

    申请日：1987-12-25

    申请人： KOMATSU MFG CO LTD

    发明人： NISHIDA KIMIO ,  YOKOYAMA TOSHIO ,  MORIYA YUKIO ,  KOBAYASHI TAKESHI

    IPC分类号： F04B49/00 ,  F02D29/04 ,  F04B49/06 ,  F04B49/20

    CPC分类号： F04B49/20 ,  F04B49/065 ,  F04B2203/0605 ,  F04B2205/05

    摘要： A hydraulic apparatus for a construction machine, which is adapted to prevent the speed of rotation of an engine from increasing when a discharge flow of oil from a variable-capacity hydraulic pump driven by the engine is cut off. The hydraulic apparatus is provided with a proportional solenoid (11) connected to a fuel control lever (13) so as to vary the horsepower characteristics of the engine, which are set by an operation of a governor (12) based on the quantity of movement of the fuel supply control lever (13), when a discharge flow of oil from the pump is cut off, and a controller (10) for use in controlling the proportional solenoid (11). In this apparatus, a quantity of decrease (DELTANr) in a target number of revolutions per minute (Nr) of the engine, which can be obtained by subtracting a target number of revolutions per minute (Nrb) of the engine represented by the desired engine horsepower characteristics (l2) from a target number of revolutions per minute (Nra) of the engine represented by the initial engine horsepower characteristics (l1), is determined, and the proportional solenoid (11) is operated in accordance with this quantity of decrease.

    CYCLIC SPEED CONTROL APPARATUS IN VARIABLE STROKE MACHINES.
    62.
    发明公开
    CYCLIC SPEED CONTROL APPARATUS IN VARIABLE STROKE MACHINES. 失效
    转速控制装置与可变HUB机。

    公开(公告)号：EP0246227A4

    公开(公告)日：1990-02-05

    申请号：EP85905954

    申请日：1985-10-10

    申请人： BRAUN ANTON

    发明人： BRAUN ANTON

    IPC分类号： F01B11/00 ,  F02B75/04 ,  F04B17/00 ,  F04B49/20

    CPC分类号： F04B49/20 ,  F02B75/04

    摘要： A free piston engine includes speed control means which provide a wide range of engine speed control for selective connection and use of the engine with any one of a number of different types of energy absorbing devices. The desired control is achieved by use of two bounce chambers (18p and 18n) and a double-acting bounce piston unit (16) specifically located at an intermediate position along the axis of reciprocation of the piston rod assembly of such an engine, i.e. between a power piston (15) at one end of the piston rod and a connecting means at the other piston rod end for driving connection of the piston rod assembly with a movable member (e.g. reciprocating compressor piston (34) or reciprocating electric generator member) of the selected energy absorbing device. The control means further includes at least one pair of variably adjustable bounce chamber pressure control valves (23 and 24), one for each bounce chamber. Each control valve of such one pair provides for and controls a direct connection of its respective bounce chamber to ambient atmospheric air outside the bounce chamber. The controls further include sensing means (37) responsive to changes in demands on or operation of the selected energy absorbing device for variably and substantially simultaneously adjusting each control valve of such one pair and thereby similarly changing (i.e. both upwardly or both downwardly) the respective bounce chamber working pressures. Other bounce pressure control features are also described.

    KOMPRESSOR ZUM KOMPRIMIEREN VON GASEN
    70.
    发明公开
    KOMPRESSOR ZUM KOMPRIMIEREN VON GASEN 审中-公开

    公开(公告)号：EP3981983A1

    公开(公告)日：2022-04-13

    申请号：EP21200840.3

    申请日：2021-10-05

    申请人： Mehrer Compression GmbH

    发明人：

    IPC分类号： F04B9/04 ,  F04B27/00 ,  F04B35/04 ,  F04B39/12 ,  F04B49/06 ,  F04B49/20

    摘要： Die Erfindung betrifft einen Kompressor (10) zum Komprimieren von Gasen, mit mindestens zwei Zylindern (12, 14), in denen jeweils ein Kolben (16, 18) geführt ist, wobei die Kolben (16, 18) mittels einer Gewindespindel (20) miteinander gekoppelt sind, wobei zwischen den Zylindern (12, 14) ein Rohrkörper (22) angeordnet ist, der einen Innenraum (24) nach außen hin begrenzt, wobei die Gewindespindel (20) im Innenraum (24) angeordnet ist und durch einen im Innenraum (24) angeordneten Rotor (32) eines Elektromotors (30) antreibbar ist, und wobei der Stator (34) des Elektromotors (30) außerhalb des Innenraums (24) angeordnet ist.