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    Piston pressure accumulator
    33.
    发明专利
    Piston pressure accumulator 未知

    公开(公告)号：DE3619990A1

    公开(公告)日：1987-12-17

    申请号：DE3619990

    申请日：1986-06-13

    Applicant: BOSCH GMBH ROBERT

    Inventor： ZIRPS WILHELM

    IPC: F15B1/24 ,  F16J15/16 ,  F15B1/053

    Abstract: The piston pressure accumulator has a piston (12) which divides a gas space (13) from a liquid space (14). The piston is prestressed by compression springs (18 to 20) arranged in the gas space (13). A combination of seals (25, 29; 32, 33) is arranged on its outer circumference and ensures that gas cannot penetrate out of the gas space along the outside of the piston and into the fluid space (14). As a result, the service life of the piston pressure accumulator is increased.

    35.
    发明专利
    未知

    公开(公告)号：DE3109850A1

    公开(公告)日：1982-09-30

    申请号：DE3109850

    申请日：1981-03-14

    Applicant: BOSCH GMBH ROBERT

    Inventor： ZIRPS WILHELM ,  REICK GEORG

    IPC: G05D23/02 ,  G05D24/00 ,  G05D24/02

    Abstract: A control valve for maintaining the temperature respectively the viscosity of pressure fluid passing therethrough substantially constant comprises a control slide provided with a throttle bore and downstream of the control slide a precontrol valve in which an end portion of an element expandable by the temperature of the pressure fluid is arranged. When pressure fluid with a certain pressure is fed through the inlet end of the control valve, the control slide is lifted from its seat and the precontrol valve opens. All of the pressure fluid entering the control valve is passed through various bores and annular gaps along the precontrol valve to the temperature expandable element. When the fluid reaches the desired maximum temperature a bypass for the fluid is created by the expandable element and a control pin actuated by the latter. Thereby the throttle action of the control valve is reduced and overheating of the pressure fluid avoided. A throttle gap between the control slide and the housing will assure removal of any air contained in the pressure fluid and a further throttle gap formed between an end face of the control slide and a disc attached thereto serves to catch any foreign particles in the pressure fluid which will be flushed away after moving of the control slide away from its seat.

    39.
    发明专利
    未知

    公开(公告)号：FR2463447A1

    公开(公告)日：1981-02-20

    申请号：FR8017571

    申请日：1980-08-08

    Applicant: BOSCH GMBH ROBERT

    Inventor： ZIRPS WILHELM

    IPC: F01M5/00 ,  F15B21/04 ,  F16N29/02 ,  G05D24/00 ,  G05D23/00 ,  F16K11/06

    Abstract: The valve for a pressure-medium-operated hydraulic arrangement has a housing provided with an inlet and an outlet, a slide piston located downstream of the inlet and seal-tightly movable in an opening of the housing under the action of the pressure medium entering the same so as to subdivide the pressure medium into a first stream flowing directly to the outlet and a second constant stream, a laminar throttle member located downstream of the slide piston and associated with a spring-biased control member wherein the laminar throttle member and the control member are arranged so that the constant stream flows through the laminar throttle member and generates pressure drop which acts upon the control member against its bias, and the control member subdivides the constant stream into two partial streams which flow to the outlet means and one of which is throttled, whereby the pressure drop between the inlet and the outlet is maintained at a constant level and thereby the viscosity of the pressure medium is maintained constant.

    Hydraulic distribution control unit for two open circuits - has separate pumps and control valves to eliminate back pressure influences
    40.
    发明专利
    Hydraulic distribution control unit for two open circuits - has separate pumps and control valves to eliminate back pressure influences 未知

    公开(公告)号：DE2625134A1

    公开(公告)日：1977-12-15

    申请号：DE2625134

    申请日：1976-06-04

    Applicant: BOSCH GMBH ROBERT

    Inventor： ZIRPS WILHELM

    IPC: F15B11/17 ,  F15B13/06

    Abstract: The hydraulic control unit is for the distribution of control fluid into two systems, the first having a pump to supply hydraulic auxiliary units, the second having a pump for a second consumer. The second system contains an energy storage and a storage charging valve to supply pressure medium to the second consumer. A flow control unit in front of the charging valve has a constant flow outlet and an excess flow outlet. The second system also contains elements, to feed pressurised fluid from the second pump to the first system. The second consumer (24) is connected to a second flow outlet (26) and switched into an open circuit. The excess flow outlet (27) is connected to the hydraulic connection (32) of an energy storage (33) via the charging valve (29).

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