Robert Boschgmbh

Dieter Vogt

Ferdinand Reiter

Martin Maier

Rudolf Babitzka

Rudolf Sauer

A method in which a valve part consisting of a valve seat body and a support body with injection holes is pushed into a longitudinal orifice of a housing and firmly connected to a wall of the housing with the insertion depth determining the presetting of a valve needle lift. The precise setting of the valve needle life is made on a fully assembled valve by deforming the valve part between fixing areas of the support body. The method of manufacture of the injection valve is particularly suitable for fuel injection units of mixture compressing engines with externally supplied ignition.

Method for the manufacture of a fuel injection valve

In electromagnetically actuatable valves, an adjusting sleeve is pressed into the flow bore of a core in order to adjust the spring force of a restoring spring. Because the known adjusting sleeves, for instance having two beads, have a sharp-edged embodiment in the region toward the flow bore, chips can be produced when they are pressed into the flow bore. The novel adjusting has a transitional region on its circumference, between the at least one bead and an end segment oriented toward the valve closing body; at least one rounded portion is provided between the transitional region and the adjacent bead. Thus when the adjusting sleeve is pressed into the flow bore of the core, chip formation at the adjusting sleeve and flow bore is prevented. The adjusting sleeve is particularly suitable for injection valves of fuel injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

Adjusting sleeve for an electromagnetically actuatable valve

Injection valve

Electromagnetically operable valve

Electromagnetically actuatable valve

A flow meter for metering the air quantity aspirated by an internal combustion engine including a metering valve element constructed as a box-like cylindrical segment pivotably mounted in a flow tube of the engine. The valve element has a radial transverse wall oriented transversely relative to the direction of the air stream in the flow tube, side walls oriented parallel relative to the direction of the air stream and a curved cylinder wall connected to the radial transverse wall and the side walls. The transverse, side and curved cylinder walls define a recess which opens in a direction opposing the direction of the air stream. The flow meter thus constructed possesses the advantage of producing a nearly linear characteristic curve.

Air flow meter

Growing community of inventors

Korntal-Muenchingen, Germany

Dieter Vogt