Robert Boschgmbh

Thilo Bolz

Goekhan Guengoer

Thomas Fuerst

Jens Pohlmann

Martin Riemer

Klaus Lang

Ralph Ittlinger

Thomas Froihofer

Ingo Rettig

Heiko Gruschwitz

Daniel Haverland

Norbert Schierholz

Thomas Fürst

A system, which is used especially as a fuel injection system for the high-pressure injection in internal combustion engines, includes a fuel distributor and a plurality of fuel injectors. Each fuel injector is situated on a cup of the fuel distributor. At least one of the fuel injectors is fastened to the associated cup by a holding element. The holding element has an at least essentially straight first leg and an at least essentially straight second leg. The cup includes at least one recess, which extends through a wall of the cup. The first leg and the second leg are guided through the at least one recess. Furthermore, the connection sleeve of the fuel injector has a collar, which is braced on the first leg of the holding element and on the second leg of the holding element in order to secure the fuel injector on the cup.

System having a fuel distributor and multiple fuel injectors

A tubular pressure accumulator which is used, in particular, as a fuel distribution rail for a mixture-compressing, spark-ignited internal combustion engine includes a tubularly bent metal wall. In this way, longitudinal sides, which are assigned to one another, of tubularly bent metal wall are connected to one another through a weld. Furthermore, the tubularly bent metal wall has at least one design feature implemented by the machining of the flat metal wall and the bending of metal wall, which take place prior to the welding.

Tubular pressure accumulator, in particular for mixture-compressing, spark-ignited internal combustion engines

The hold-down device for a fuel injection device has a design which is simple in particular, which nonetheless enables a fuel injector () to be held down very effectively. The fuel injection device includes at least one fuel injector (), a receptacle bore for the fuel injector () and a connecting fitting () of a fuel distributor line (), the hold-down device () being clamped between a shoulder () of the fuel injector () and an end surface () of the connecting fitting (). The hold-down device () has a base element () in the shape of a partial ring, from which an axially flexible hold-down clip () extends in a bent-away fashion, the clip having at least two webs (), two oblique segments (), and two contact segments (). The fuel injector () is suitable in particular for use in fuel injection systems of mixture-compressing, externally ignited internal combustion engines.

Hold-down device for a fuel injection device

The hold-down device for a fuel injection device is distinguished by a particularly simple design that nonetheless permits a very effective holding down of a fuel injection valve. The fuel injection device includes at least one fuel injection valve, a receptacle bore for the fuel injection valve, and a connecting fitting of a fuel distributor line, the hold-down device being clamped between a shoulder of the fuel injection valve and an end surface of the connecting fitting. The hold-down device has a partially annular base element from which there extends, in a bent-away fashion, an axially flexible hold-down clip that has at least two webs, two oblique segments, and two support segments. The fuel injection valve is particularly suitable for use in fuel injection systems of mixture-compressing externally ignited internal combustion engines.

Hold-down device for a fuel injection device, and fuel injection device

The fuel injection device according to the present invention is distinguished by a particularly effective sound-decoupling construction. The fuel injection device has at least one fuel injection valve, a receptacle bore for the fuel injection valve in a cylinder head, and a fuel distributor line having a fitting in which the fuel injection valve is placed in partially overlapping fashion. A connecting element is situated in the receptacle bore in such a way that the fuel injection valve is held in the connecting element in such a way that the fuel injection valve and the connecting element are held so that they do not contact any surfaces or walls of the receptacle bore of the cylinder head that do not run axially parallel to the fuel injection valve. The connecting element is attached immediately on the fitting of the fuel distributor line. The fuel injection valve is particularly well-suited for use in fuel injection systems of mixture-compressing externally ignited internal combustion engines.

Growing community of inventors

Kraichtal, Germany

Thilo Bolz