Robert Boschgmbh

Werner Grunwald

Kurt Schmid

Claudio De La Prieta

Peter Nolting

Horst Fedter

Iwan Komaroff

Gunther Schmid

Ernst Imhof

Thomas Frey

Karl-Hermann Friese

Helmut Reum

Klaus Dobler

Hans Neu

Jurgen Schmatz

Helmut Weyl

Rudolf Heinz

Ewald Schmidt

Heinz Pfizenmaier

Hermann Dietz

Peter Perthus

Hans-Peter Koch

Rolf Mayer

Friedrich Prinzhausen

Gerhard Holfelder

Ulrich Schoor

Ernst Zehender

Manfred Koder

Kuno Kirner

Bernd Schumacher

Gunther Knoll

Gundmar Leuze

Rudiger Dieffenbach

Sensor element for limiting current sensors to determine the lambda

Sensor element for limiting current sensors for determining the .lambda.

A printing paste suitable for application by an elastically deformable stamp on a substrate and method for said application. The paste comprises a powdered solid component in an organic carrier with a weight ratio of between 6:4 and 8:2. The organic carrier comprises 4-9% by weight ethyl cellulose, 74-82% alpha-terpineol, and 8-17% benzyl alcohol. The paste may also contain up to 20% by weight of polyethylene glycol. The solid component of the paste is preferably a mixture of platinum and zirconium dioxide which can be applied as an electrically conductive paste to form a conductive coating on a substrate, preferably a tubular or other substrate having a non-planar surface. The paste has a viscosity of between 6 and 8.5 pascal seconds.

Printing paste and method of applying said paste

Thermal radiation sensor

Spark plug with a surface discharge section

Method of controlling heating and/or air conditioning installation in

Heating and/or air conditioning apparatus for motor vehicles

An ion conductive sensor is connected to a current source which, in order to prevent polarization effects, controls current flow through the sensor in spaced or polarity-alternating pulses. If the sensor is a humidity sensor, it is preferably constituted by Cr.sub.2 O.sub.3, V.sub.2 O.sub.5 and Na.sub.2 WO.sub.4 in a proportion, by weight, of preferably 2 to 2.5:1:1, sintered on a substrate which has comb electrodes applied thereto. The sensor is especially immune to noise or disturbance pulses from the current supply and is especially suitable for use as an ambient humidity sensor in an automotive vehicle (810).

Humidity sensor, sensor material, method of manufacture and humidity

Heat radiation sensing device

A humidity sensor, and particularly a sensor which can distinguish between low humidity values, for example below 60% humidity, and high humidity values, for example 90% humidity and thereover, and change the capacitance between output electrodes (5, 6) is formed by applying interdigited comb electrodes (1, 2) on a substrate (8) and applying over the substrate a ceramic mass formed of BaRuO.sub.3, V.sub.2 O.sub.5 and Na.sub.2 WO.sub.4, with a weight relationship of (1.+-.0.4):(1.+-.0.4):(0.6.+-.0.2) preferably 1:1:0.6. The sensor is made by first making a powder of the components, mixing it with a glass paste and, if necessary, a thinner, and applying the resulting paste by thick-film technology to a ceramic substrate on which the electrodes have been applied, and then firing the substrate at a temperature of between 550.degree. C. to 850.degree. C. The sensor is particularly sensitive in humidity ranges above 60% relative humidity and is especially suitable to sense fogging of the inside of a windshield of an automotive vehicle.

Capacitative-type humidity sensing element and system, and method of

High voltage electrodes for the ignition system of internal combustion

To reduce erosion of a platinum-containing electrode layer (3, 14) applied to the end face of the center insulator (1, 11) of the spark plug, a protective layer of ceramic, preferably aluminum oxide, is applied over the electrode. The aluminum oxide protective is sufficiently thin to permit arc-through or spark-through of the spark from a counter electrode (9, 19). This permits reduction of the thickness of the electrode layer to between about 5 to 15 micrometers, preferably about 8 to 10 micrometers, with a thickness of the protective layer of between 5 to 50 micrometers, preferably about 8 to 10 micrometers. Aluminum oxide is the preferred material for the center insulator, the protective layer, as well as an additive to the center electrode if it is made of a mixture of platinum and ceramic.

Spark plug for an otto-type internal combustion engine

Apparatus for injecting fuel into combustion chambers

An apparatus for the injection of fuel into combustion chambers, in particular of self-igniting internal combustion engines, having an injection nozzle (10) and a subsequent glow body (20), which has a conduit (30) surrounded by heatable walls (26) and serving for the passage therethrough of the injected streams. At least one lateral opening (32) discharges into this conduit (30), the opening preferably communicating with a region (46) of the combustion chamber (36) remote from the core region of the ignition. The air aspirated through the lateral opening (32) warms up and enters into the peripheral zone of the injected streams, where the result is an air-fuel ratio and temperature conditions which are very favorable for ignition. Less heat energy is required to initiate the ignition than in the known apparatus of this general type. By eliminating the conventional glow plugs, which interrupt the movement of air in the combustion chambers, increased power is attained and the emission of soot is reduced sharply.

Apparatus for injecting fuel into combustion chambers of internal

Apparatus for injecting fuel into a secondary flow of combustion air

Growing community of inventors

Gerlingen, Germany

Werner Grunwald