Robert Boschgmbh

Hans Neu

Helmut Denz

Andreas Blumenstock

Guenther Riehl

Rainer Frank

Werner Herden

Werner Grunwald

Karl-Hermann Friese

Erich Zabler

Hans-Peter Koch

Heiko Gruner

Richard Gerber

Karl Ehrmann

Werner Pfander

Jurgen Schmatz

Ernst Zehender

Karl-Otto Linn

Hans-Martin Hochenberger

Dieter Raff

Kuno Kirner

Claus-Dietrich Pilch

Bernd Schumacher

Hans-Joachim Seidel

Dieter Reinmueller

Gundmar Leuze

Juergen Schmatz

Ulrich Brintzinger

Artur Mayer

Breather for an internal combustion engine fuel tank

A breather valve for the gas tank of an internal combustion engine having an adsorption filter which is linked to the atmosphere by a breather line which is controlled by a shut-off valve. The tank breather valve is constructed so that pressure build up in the fuel tank, the lines, and the adsorption filter do not lead to damage of the valves. The magnetic circuit of the shut-off valve provides that above a predetermined pressure in the adsorption filter, the generated pressure is sufficient to open the shut-off valve, thereby facilitating pressure relief without any damage. The breather is particularly suitable for internal combustion engines in motor vehicles.

The distributor has a distributor rotor with a radially extending rotor electrode attached nonrotably to a drive shaft, a distributor cap provided with a number of connectors on top each having a through-going opening in an interior wall of the cap, a center electrode insertable through the center connector in the cap and distributor electrodes insertable through peripherally disposed connectors so that they are positionable spaced from the rotor electrode during rotation of the distributor rotor past them, connecting cables each of which are connected to an electrode for conveying ignition energy to a spark plug and retaining members each releasably holding one of the distributor electrodes in place in the cap. The free end of one of the electrodes may be serrated or knurled while its other end together with the connected end of the connecting cable is enclosed by a lip member made of an elastic insulating material, in which one of the connectors is insertable and tightly held.

Distributor for an ignition system of an internal combustion engine

High voltage electrodes for the ignition system of internal combustion

The part of the distributor electrode in the breakdown region has a resistance of at least 400 ohms per millimeter. The total resistance of the electrode is in the range of between 0.5 and 1.0 kilo-ohms. The material is a mixture of a resistive ceramic material and a finely dispersed additive of metallic conductivity. Arrangements for creating surface discharge gaps thereby slowing down the sparking process and decreasing interference are also illustrated.

Electrode for ignition systems

A meander-shaped layer of nickel is deposited by evaporation on a ceramic wafer over an intermediate layer of tantalum serving to improve adhesion, and covered by a protective coating of silicon or epoxy resin is used as a temperature sensor in the intake pipe of a supercharged internal combustion engine. The low mass of the sensor element thus provided enables the resistance of the nickel path to follow rapidly, by its variation, the variations of temperature of the intake air. The sensor has a casing made up of two parts, the lower one of which has two connection prongs molded into it, the ends of which are flattened into tabs that are soldered to contact areas of the ceramic wafer. The upper casing portion has a cavity for the ceramic wafer, the lower part of which is filled with a potting compound to protect the solder joints. The width of the nickel paths that provide the temperature sensitive resistance is about 50 .mu.m and the thickness is from 0.2 to 1 .mu.m and the resistance may be typically 1000 ohms.

Rapid acting gas temperature sensor

The interior of a differential pressure cell is exposed to the pressure in the intake pipe of an internal combustion engine. An absolute pressure cell is exposed to the ambient air pressure. The movable membrane of the differential pressure cell carries a plate on which are mounted two permanent magnets whose North poles face one another. A Hall generator fastened to the center of the movable membrane of the absolute pressure cell moves in the gap between the two magnets. The effective magnetic field applied to the Hall generator thus varies with the relative position of the Hall generator and the magnets. Adjustment of the spring constants of the two membranes allows any linear combination of differential and absolute pressure to be formed. Embodiments of different complexity and different degrees of linearity are illustrated.

Apparatus for furnishing a signal indicative of the load of an internal

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Vaihingen-Enz, Germany

Hans Neu