Robert Boschgmbh

Albrecht Baessler

Helmut Rembold

Peter Ropertz

Klaus Lang

Eckhard Bodenhausen

Thomas Fuerst

Hermann Buchwald

Erwin Grommes

Reiner Kopp

Marcus Wuenning

Weidong Qi

Bueser Wolfgang

A clamping element for a fuel injector is provided that is insertable into a mounting hole of a cylinder head of an internal combustion engine, and that directly injects fuel into a combustion chamber of the internal combustion engine has a first step ring. This at least partially surrounds the fuel injector and has a valve pressure surface that may rest on the fuel injector. The first step ring has at least one circumferential slope surface on its side facing away from the valve pressure surface, which engages with a corresponding circumferential slope surface of a second step ring, which has a counterpressure surface. The slope surfaces are arranged so that the first step ring and the second step ring are pressed axially apart when they are rotated relatively to one another.

Clamping element for a fuel injection valve and fuel injection system

Fuel supply system in an internal combustion engine

A device for attaching and securing a valve is particularly suited for fuel-injection systems of mixture-compressing internal combustion engines having externally supplied ignition. The device provides a twistable holding-down clamp which, together with an inner pressure element, prevents a fuel-injection valve from slipping and which, together with an outer fixing ring as a part of a bayonet catch, whose corresponding bayonet locking bars are constructed on the fuel distributor, ensures a simple and reliable attachment to the fuel distributor. The holding-down clamp is sealed by the sealing cap, which is set down on the holding-down clamp and through which the connecting cables also run. The fuel-injection valve does not have any functional elements for attaching in the valve-mount opening of the fuel distributor.

Device for attaching and securing a valve

Heating devices are used to prevent icing and deposition of fuel on the throttle valve under adverse operating conditions; these device comprise electrical resistance hot wires applied to the surface of the throttle valve, yet these wires lead to undesired turbulence in the fuel-air mixture flow. As the length of time in operation increases, the efficiency of the hot wires is lessened by corrosion of their surface. These disadvantages are avoided by integrating the heating device with the component to be heated. To this end, the heating device is disposed in an axial bore of the throttle valve shaft. This arrangement is used especially with mixture-compressing internal combustion engines equipped with carburetors or central injection systems.

Throttle valve connection piece

Growing community of inventors

Korntal-Muenchingen, Germany

Albrecht Baessler