Filterwerk Mann + Hummel Gmbh

Joachim Schraudolf

Klaus Rentschler

Arthur Klotz

Helmut Neuschwander

Manfred Mueller

Heinz Blessing

An intermediate flange system for an internal combustion engine with direct fuel injection. The intermediate flange system is mounted between the intake device and the cylinder head and includes two subunits ( ). The first subunit includes a basic body ( ) and is responsible for conducting the fuel. The other subunit includes a basic body ( ) and serves to conduct the intake air. Both basic bodies can be optimally designed as a function of demands to which they are subjected. Thus, basic body ( ) is preferably made of synthetic resin material, and basic body ( ) of aluminum. Consequently, the overall intermediate flange system is lighter than prior art systems, which heretofore have been made entirely of aluminum.

Intermediate flange system for an internal combustion engine with direct fuel injection

A method for producing a control valve assembly using a mold comprising an upper mold half ( ) and a lower mold half ( ). A shaft ( ) with premounted bearing blocks ( ) or other functional components is placed in the mold, and the control valves subsequently are injection-molded on the shaft ( ) in cavities ( ) via feeders ( ) to produce the control valve assembly. Afterward, the bearing blocks ( ) can no longer be detached. Because they are produced separately, the bearing blocks can have a complex geometry. This allows a considerable degree of freedom in the geometric design of the control valve assembly while nevertheless ensuring cost-effective production.

Method of producing a control valve assembly

A method of manufacturing a control strip for injection valves in plastic fuel lines of an internal combustion engine, comprising forming a conductive preform defining at least two conductive elements initially connected by removable bridges formed of the same material as the conductive elements for controlling said injection valves; embedding said preform in an insulting plastic; removing the bridges between the conductive elements to electrically isolate the conductive elements from each other; and thereafter casting the plastic-embedded and electrically isolated conductive elements into a one-piece control strip which serves as a housing and electrical control strip for the injection valves.

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Heilbronn, Germany

Joachim Schraudolf