Abstract: There is disclose a high-pressure fuel pump and a fuel injection valve connected to it for each cylinder of an internal combustion engine. A pump piston of the pump delimits a working chamber connected to a pressure chamber of the injection valve having a valve element controlling injection openings and movable in an opening direction counter to closing force by pressure prevailing in the pressure chamber. A control valve controls connection of a control pressure chamber with the pump-working chamber delimited by a control piston to a relief chamber. When the injection valve element is closed, the control piston opens a main connection with a large flow cross section and when the injection valve element is open, this control piston closes the main connection, only opening a bypass connection with small flow cross section, the bypass connection is embodied in a housing part delimiting the control pressure chamber.

Abstract: The invention relates to a device for determining at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine. The solid particles contained in the line act on a measuring element and influence a characteristic curve behavior of the measuring element, which is used to determine parameters of the flowing medium. In order to reduce the action of solid particles on the measuring element, the measuring element is disposed in a line or a tubular body downstream of a protective screen, and an element for influencing movement paths of the solid particles is disposed in the line, on an inner wall. By intentionally influencing the movement paths of the solid particles, their action on the measuring element is considerably reduced.

Abstract: In a fuel injection system for an internal combustion engine, having a fuel high-pressure reservoir, from which an injection line for the fuel to be injected and a drive line for fuel branch off, which fuel is used as a working medium, the fuel is intended to be utilized, in a simple way, in order to furnish a working medium at high pressure that can be used for additional functions. To that end, at least one converter is provided, which is connected to the drive line and in which a volumetric flow of the fuel, which is under pressure, is converted into a volumetric fuel of a working medium which is under pressure.