VALVE ASSEMBLY, VALVE ASSEMBLY ARRANGEMENT, INJECTION VALVE AND METHOD FOR INJECTING A FLUID

• Main Authors: Gebhardt, Xaver, Kerekgyarto, Janos, Lyubar, Anatoliy
• Format: Patent
• Language: English; French; German
• Published: 17.04.2019
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

A valve assembly (1) for an injection valve is disclosed which comprises a valve housing section (2) having a cross wall (6) being situated axially between a fluid inlet portion (9) and a cavity (12) of the valve housing section (2), wherein at least a section of a valve needle (13) of the valve assembly (1) extends along the cavity (12). The cross wall (6) includes a hollow bore (14) extending along or parallel to the central longitudinal axis (L) from a front wall (15) facing the fluid inlet portion (9) to a mouth (16) facing the cavity (12). A first axial end section (17) of the valve needle (13) is inserted in the hollow bore (14) and movable therein axially relative to the cross wall (6). The front wall (15) includes a throttling via hole (31), wherein a hollow cross section of the throttling via hole (31) is smaller compared to a cross section of the first axial end section (17). The valve housing section (2) comprises one or more fluid passages (29) extending between the fluid inlet portion (9) and the cavity (12). A valve assembly arrangement , an injection valve and a method of injecting a fluid are also disclosed.