摘要:
The invention concerns a security arrangement in which a cap-shaped element (34) is mounted over essential setting and/or operating elements (11, 25) of a fuel-delivery system. The cap-shaped element (34) is connected to parts of the fuel-delivery system surrounded thereby such that access or removal of the cap-shaped element (34) is possible only using destructive means. When a given destructive force has been exceeded, a fracture occurs at a predetermined breaking point (52), which destroys a setting or operating element (25) or the wall (26, 27) supporting the latter and delimiting fuel-delivering chambers in the fuel-delivery system.
摘要:
The invention concerns a security arrangement in which a cap-shaped element (34) is mounted over essential setting and/or operating elements (11, 25) of a fuel-delivery system. The cap-shaped element (34) is connected to parts of the fuel-delivery system surrounded thereby such that access or removal of the cap-shaped element (34) is possible only using destructive means. When a given destructive force has been exceeded, a fracture occurs at a predetermined breaking point (52), which destroys a setting or operating element (25) or the wall (26, 27) supporting the latter and delimiting fuel-delivering chambers in the fuel-delivery system.
摘要:
The invention relates to a cylinder head for a high-pressure fuel pump in a fuel injection system, in particular in a common rail injection system, wherein a high-pressure bore (1) for forming a pump working chamber (2) and for receiving a pump piston (3) and at least one additional bore (4, 5) for receiving an intake valve (6) and/or a high-pressure valve (7) are designed in the cylinder head. According to the invention, the cylinder head has an integral design and comprises a plurality of high-pressure outlets, each in the form of a shoulder (8, 9) having a bore (10, 11), which are used to connect an injector and/or receive a pressure sensor (17), wherein at least one bore (10, 11) of a shoulder (8, 9) is arranged coaxially in relation to the high-pressure bore (5) in which the high-pressure valve (7) is received. The invention further relates to a high-pressure fuel pump comprising at least one such cylinder head.
摘要:
The invention relates to a pump comprising at least one pump element (14) which comprises a pump piston (24) which is tightly guided in a cylinder bore (26) of a housing part (10) and which defines a pump working chamber (26) in the cylinder bore (26) and which is driven in a stroke movement. The pump working chamber (26) is provided with a connection to a feeder channel (34) controlled by an inlet valve which opens into the pump working chamber (26) and a connection to a discharge channel (38) controlled by an outlet valve (30) which opens out of the pump working chamber (26). The inlet valve comprises a valve member (46) which co-operates with a valve seat (44) and which is impinged upon by a valve spring (48) in a closing direction in relation to the valve seat (44). The feeder channel (34) comprises a part which is embodied in the form of a first blind bore (42) which has a smaller diameter than that of the cylinder bore (26) and which is adjacent to the pump working chamber (30) in the cylinder bore (26) in the housing part (10). The valve seat is formed in the transition from the cylinder bore (26) to the first blind bore (42) and a second blind bore (50) leads into the first blind bore (42) as another part of the feeder chamber (34).
摘要:
The proposal is for a protective device which prevents the unauthorised access to an adjusting or operational component of a fuel supply device, especially a fuel injection pump. The protective device consists of a basic component with a base via which it is screwed to a housing wall of the fuel supply system and a cover (44) which encloses the functional component (25) on the basic component (34) in such a way that the cover has a side wall which is further positively surrounded by a side wall (36) of the basic component. Thus access to the functional component (25) and the securing system of the basic component (34) is prevented. The cover (44) is secured to the basic component by safeguarded fixing means (54).
摘要:
The invention relates to a high-pressure fuel pump (10) used for a fuel system of a direct injection internal combustion engine. Said fuel pump comprises a housing (12), a low-pressure inlet (18), and a high-pressure outlet (20) which can be connected to a fuel collector line (22). In order to provide a high-pressure fuel pump (10) which is as compact as possible, the fuel collector line (22) is integrated into the housing (12) of said high-pressure fuel pump (10).
摘要:
The proposal is for a protective device which prevents the unauthorised access to an adjusting or operational component of a fuel supply device, especially a fuel injection pump. The protective device consists of a basic component with a base via which it is screwed to a housing wall of the fuel supply system and a cover (44) which encloses the functional component (25) on the basic component (34) in such a way that the cover has a side wall which is further positively surrounded by a side wall (36) of the basic component. Thus access to the functional component (25) and the securing system of the basic component (34) is prevented. The cover (44) is secured to the basic component by safeguarded fixing means (54).