Abstract: A valve assembly for an injection valve includes a valve body with a central longitudinal axis, the valve body having a valve body groove extending circumferentially around the valve body and being designed to take in a gasket, the valve body groove having a first wall section and a second wall section, the wall sections configured to be coupled to the gasket in a manner that the valve assembly is sealingly coupable with a cylinder head of a combustion engine, and an injection nozzle enabling a fluid flow through the valve assembly. The second wall section is arranged relative to the first wall section in axial direction away from the injection nozzle. The first wall section extends to a first radius and the second wall section extends to a second radius, and the first radius is bigger than the second radius.

Abstract: A valve assembly for an injection valve includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion; a hollow valve needle axially movable in the cavity between open and closed positions to control fluid flow through the fluid outlet portion, wherein fluid can flow from the fluid inlet portion into the hollow valve needle; and an actuator assembly that actuates the valve needle and includes an axially movable armature. The valve needle includes first orifice(s) between the armature and the fluid outlet portion and second orifice(s) located adjacent or upstream of the armature. The first and second orifices allow fluid flow between the hollow valve needle and the cavity. A first gap defined between the valve needle and the armature allows fluid flow from the hollow valve needle via the second orifice into the first gap and further into the cavity.

Abstract: A valve assembly for an injection valve includes a valve body with a central longitudinal axis, the valve body having a valve body groove extending circumferentially around the valve body and being designed to take in a gasket, the valve body groove having a first wall section and a second wall section, the wall sections configured to be coupled to the gasket in a manner that the valve assembly is sealingly coupable with a cylinder head of a combustion engine, and an injection nozzle enabling a fluid flow through the valve assembly. The second wall section is arranged relative to the first wall section in axial direction away from the injection nozzle. The first wall section extends to a first radius and the second wall section extends to a second radius, and the first radius is bigger than the second radius.

Abstract: A valve assembly for an injection valve includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion; a hollow valve needle axially movable in the cavity between open and closed positions to control fluid flow through the fluid outlet portion, wherein fluid can flow from the fluid inlet portion into the hollow valve needle; and an actuator assembly that actuates the valve needle and includes an axially movable armature. The valve needle includes first orifice(s) between the armature and the fluid outlet portion and second orifice(s) located adjacent or upstream of the armature. The first and second orifices allow fluid flow between the hollow valve needle and the cavity. A first gap defined between the valve needle and the armature allows fluid flow from the hollow valve needle via the second orifice into the first gap and further into the cavity.

Abstract: The invention relates to a process for the depolymerization of glycosaminoglycanes characterized by the use of electron beam radiation, optionally in the presence of an organic compound selected from the group consisting of ethers, alcohols, aldehydes, amides and formic acid. The invention also relates to the intermediate depolymerized heparin obtained by the process. The intermediate depolymerized heparin can be dissolved in a buffer solution and fractionated by gel permeation for obtaining the desired molecular weight.

Abstract: The invention relates to a process for the depolymerization of glycosaminoglycanes characterized by the use of electron beam radiation, optionally in the presence of an organic compound selected from the group consisting of ethers, alcohols, aldehydes, amides and formic acid. The invention also relates to the intermediate depolymerized heparin obtained by the process. The intermediate depolymerized heparin can be dissolved in a buffer solution and fractionated by Gel Permeation for obtaining the desired Molecular Weight.