Electromagnetically actuatable inlet valve and high-pressure pump having an inlet valve
A high-pressure pump, inlet valve technology, applied in the direction of electromagnets, electromagnets with armatures, valve operation/release devices, etc., can solve problems such as impairing the function capacity of the inlet valve, connection damage, etc., achieving long service life and effective unloading , the effect of improving durability
Active Publication Date: 2018-08-03
ROBERT BOSCH GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
When the armature stops against the magnetic core, a high load on the two components and a high load on the connection between the two components occurs, which in the long run leads to the two components and / or or damage to the connection between the two components, thereby being able to impair the functional capability of the inlet valve
Method used
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Embodiment Construction
[0010] exist figure 1 A high-pressure pump is shown partially in the center, which is provided for delivering fuel in a fuel injection system of an internal combustion engine. The high-pressure pump has at least one pump element 10 which in turn has a pump piston 12 which is driven in a reciprocating motion by a drive, is guided in a cylinder bore 14 of a housing part 16 of the high-pressure pump and A pump working chamber 18 is delimited in the bore 14 . A drive shaft 20 with a cam 22 or an eccentric can be provided as drive for the pump piston 12 on which the pump piston 12 is supported directly or via a tappet, for example a roller tap. The pump working chamber 18 can be connected via an inlet valve 24 to a fuel inflow 26 and via an outlet valve 28 to a reservoir 30 . During the suction stroke of the pump piston 12 , the pump working chamber can be filled with fuel with the inlet valve 24 open. During the delivery stroke of the pump piston 12 , fuel is forced out of the ...
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The invention proposes an electromagnetically actuatable inlet valve (24) for a high-pressure pump, in particular of a fuel-injection system. The inlet valve (24) has a valve member (34) which can bemoved between an open position and a closed position. An electromagnetic actuator (60) is provided, by means of which the valve member (34) can be moved, wherein the electromagnetic actuator (60) hasan armature (68) which acts at least indirectly on the valve member (34), a magnet coil (64) which surrounds the armature (68), and a magnetic core (66) against which the armature (68) comes to rest at least indirectly when current is applied to the magnet coil (64), wherein the armature (68) is movably guided in a carrier element (78), and the carrier element (78) and the magnetic core (66) are interconnected. The carrier element (78) and the magnetic core (66) are interconnected by a sleeve-shaped connection element (90) which is integrally bonded in a first connection region (92) to the carrier element (78) and / or the magnetic core (66), and interlockingly engages the carrier element and / or the magnetic core in a second connection region (94) offset relative to the first connection region (92) in the direction of the longitudinal axis (91) of the connection element (90).
Description
technical field [0001] The invention relates to an electromagnetically actuatable inlet valve for a high-pressure pump, in particular a high-pressure pump of a fuel injection system, according to the preamble of claim 1 . Furthermore, the invention relates to a high-pressure pump with such an inlet valve. Background technique [0002] An electromagnetically actuatable inlet valve for a high-pressure pump of a fuel injection system is known from DE 10 2013 220 593 A1. The high-pressure pump has at least one pump element with a pump piston driven in reciprocating motion, which delimits a pump working chamber. The pump working chamber can be connected to the fuel inflow via an inlet valve. The access valve includes a valve element cooperating with a valve seat for control and movable between an open position and a closed position. In the closed position of the valve element, the valve element bears against the valve seat. Furthermore, the inlet valve comprises an electromag...
Claims
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IPC IPC(8): F02M59/36F04B53/10F04B7/00F16K31/06H01F7/16F02M59/06F02M59/10F02M63/02
CPCF02M63/0265F02M59/06F02M59/102F04B7/0076F04B53/102H01F7/1607F02M2200/8053F02M2200/8084F04B1/0452F04B53/1082F02M59/366
Inventor T·兰登贝格尔
Owner ROBERT BOSCH GMBH