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    HOCHDRUCKPUMPE, INSBESONDERE FÜR EINE KRAFTSTOFFEINSPRITZEINRICHTUNG EINER BRENNKRAFTMASCHINE
    8.
    发明公开
    HOCHDRUCKPUMPE, INSBESONDERE FÜR EINE KRAFTSTOFFEINSPRITZEINRICHTUNG EINER BRENNKRAFTMASCHINE 有权
    高压泵，尤其是用于内燃发动机的燃料喷射装置

    公开(公告)号：EP1966481A1

    公开(公告)日：2008-09-10

    申请号：EP06819509.8

    申请日：2006-11-15

    申请人： Robert Bosch GmbH

    发明人： FUCHS, Walter ,  DUTT, Andreas ,  ALEKER, Jochen ,  GENTE, Arnold ,  SANTAMARIA, Angelo

    IPC分类号： F02M59/46

    CPC分类号： F02M59/464 ,  Y10T137/7911 ,  Y10T137/7928

    摘要： The high-pressure pump has at least one pump element (16) which has a pump plunger (20) which is driven in a reciprocating motion and defines a pump working space (24) into which fuel is drawn in from a fuel feed (50) via an inlet valve (30) during the suction stroke of the pump plunger (20) and from which fuel is displaced into a high-pressure region (12) via an outlet valve (32) during the delivery stroke of the pump plunger (20). The inlet valve (30) and/or the outlet valve (32) has a valve member (40) at least approximately in the shape of a ball which interacts by means of a sealing surface with a valve seat (43b) arranged in a valve housing (36). By means of the valve member (40), in the open state, when said valve member (40) is lifted with its sealing surface from the valve seat (34b), a first cross section (50) of flow is cleared between the valve member (40) and the valve seat (34b), and, downstream of the first cross section (50) of flow, a second cross section (52) of flow is formed between the valve member (40) and the valve housing (36). In the direction of flow between the first cross section (50) of flow and the second cross section (52) of flow, a third cross section (54) of flow is formed between the valve member (40) and the valve housing (36), said third cross section (54) of flow being larger than the first cross section (50) of flow and the second cross section (52) of flow.

    HOCHDRUCKPUMPE, INSBESONDERE FÜR EINE KRAFTSTOFFEINSPRITZEINRICHTUNG EINER BRENNKRAFTMASCHINE
    9.
    发明公开
    HOCHDRUCKPUMPE, INSBESONDERE FÜR EINE KRAFTSTOFFEINSPRITZEINRICHTUNG EINER BRENNKRAFTMASCHINE 有权
    高压泵，尤其是用于内燃发动机的燃料喷射装置

    公开(公告)号：EP1727983A1

    公开(公告)日：2006-12-06

    申请号：EP05707796.8

    申请日：2005-01-18

    申请人： ROBERT BOSCH GMBH

    发明人： DUTT, Andreas ,  ALEKER, Jochen

    IPC分类号： F04B53/10 ,  F04B53/16 ,  F04B39/12 ,  F04B39/10

    CPC分类号： F04B53/1087 ,  F02M59/464 ,  F02M59/485 ,  F04B1/0452 ,  F04B53/102 ,  F04B53/16

    摘要： The inventive high-pressure pump comprises at least one pump element (18) comprising a pump plunger (20), which is displaceably configured in a cylinder bore (28) of a housing part (22) of the high-pressure pump, is driven to perform a stroke and which delimits a pump working chamber (30) in the cylinder bore (28), whereby fuel is sucked into said chamber via an inlet valve (34) during the intake stroke of the pump plunger (20). The inlet valve (34) comprises a plunger-shaped valve member (56), which co-operates with a sealing surface (60) comprising a valve seat (52) for controlling the connection of the pump working chamber (30) to the fuel supply line (32). The valve member (56) is equipped with a head (58), on which the sealing surface (60) is configured, and is located in the pump working chamber (30). A shaft (62) that adjoins the head (58) protrudes from the pump working chamber (30). The valve seat (52) is configured in the housing part (22) in a transition zone between the cylinder bore (28) and a smaller bore (50) that adjoins the latter and has a smaller diameter. The shaft (62) of the valve member (56) projects through the bore (50) into a region (54) of the housing part (22) that faces away from the pump working chamber (30). A closing spring (64) that engages with the shaft (62) of the valve member (56) is located in said region.

    MAGNETVENTILGESTEUERTE KRAFTSTOFFEINSPRITZPUMPE FÜR BRENNKRAFTMASCHINEN, INSBESONDERE DIESELMOTOREN
    10.
    发明授权
    MAGNETVENTILGESTEUERTE KRAFTSTOFFEINSPRITZPUMPE FÜR BRENNKRAFTMASCHINEN, INSBESONDERE DIESELMOTOREN 有权
    电磁控制燃油喷射泵用于内燃机，特别是柴油引擎

    公开(公告)号：EP1339968B1

    公开(公告)日：2005-06-22

    申请号：EP01997636.4

    申请日：2001-11-16

    申请人： ROBERT BOSCH GMBH

    发明人： BOEHLAND, Peter ,  STERR, Andreas ,  DUTT, Andreas

    IPC分类号： F02M59/36 ,  F02M41/14 ,  F02M59/46

    CPC分类号： F02M59/466 ,  F02M41/1411 ,  F02M59/366

    摘要： An electromagnetic valve-controlled fuel injection pump for internal combustion engines, especially diesel engines, comprises an electromagnetic valve (18) whose valve needle (17), via a valve seat (16) located inside the pump body, disconnects a high-pressure area (14, 15) from a low-pressure area (21) or connects the high-pressure and low-pressure areas, whereby the duration of injection is controlled by the opening of the electromagnetic valve (18). In addition, a low-pressure compensating plunger (24), which is arranged inside the low-pressure area (21), is provided for compensating for variations in pressure inside this low-pressure area (21). The invention is characterized in that the low-pressure compensating plunger (24), which is arranged coaxial to the electromagnetic valve needle (17), is provided as a component that is separate from the electromagnetic valve needle (17). This ensures an unimpeded and thus fastest possible opening of the electromagnetic valve (18) by the opening force that the electromagnet exerts upon the electromagnetic valve needle (17).