摘要:
A thermal radiation sensor is suggested which comprises two receiver surfaces exposed to the radiation, one receiver surface (1) having a high absorption capacity with respect to the thermal radiation, the other (2) having a low absorption capacity, the two receiver surfaces (1) and (2) consist of a NTC resistance material and are combined in a bridge circuit together with two temperature-independent cermet resistors (3) and (4). In order to prevent a dependency of the measurements of such a sensor on the ambient temperature, the NTC resistors (1) and (2) comprise underlying heating layers (6) and (7) which keep the two NTC resistors at a constant temperature. Insulating layers (8) and (9) are provided between the NTC resistors (1) and (2) and the heating layers (6) and (7). The heating layers (6) and (7) consist of a cermet thick film with platinum or of a platinum thick film and have the shape of a meander. The insulating layers (8) and ( 9) preferably consist of a crystallizing glass.
摘要:
An apparatus for injecting fuel into the combustion chamber of an internal combustion engine, having an injection nozzle and following the injection nozzle a partition (12, 23, 29) which is provided with through openings (13) for the injection streams and is embodied as a guide device for a partial flow of combustion air, which flow is accelerated by the injector action of the fuel streams in the through openings (13). A device (26, 24, 32) for preheating the partial flow of combustion air is also secured to the partition (12, 23, 29). In this apparatus, the partial flow of combustion air circulates virtually continuously through the partition (12, 23, 29) embodied as a guide device, and the acceleration caused by the injector action of the fuel streams increases with increasing engine rpm. This has the advantage that over the entire power and rpm range of the engine, a uniform course of combustion and a reduction of toxic emissions is attainable.
摘要:
A device for injecting fuel in combustion chambers, especially for self-igniting internal combustion engines, is proposed, in which a fuel injection nozzle, by aspirating air through an air guide device in the manner of a jet pump, generates a fuel spray that is surrounded by an air envelope. This air-enveloped fuel spray is directed through a heating element, the heat generation of which is distributed in such a manner over its length that a desired heating profile along the heating element is produced. The type of heating profile depends not only on the properties of the material making up the heating resistor but also on its structural makeup and its electrical bonding. A highly suitable material for the heating resistor is molybdenum silicide (MoSi.sub.2).
摘要:
To make inductance elements, thick film electrically conductive paste, which may include precious metal such as silver, are applied by a deformable stamp on a ferrite core which, for example, can be someone hump shaped, for adhesion to a carrier (30) and formed with openings thereto, the stamp being shaped to fit within the opening and deforming to penetrate the opening to apply the thick film conductive paste in form of conductive tracks thereon. Conductive tracks can be applied, previously, to a substrate carrier (30), which are then joined by the paste strips to form interconnected windings (FIGS. 1a, 1b); or the ferrite may be in form of a toroidal core (34), on which the conductive tracks are applied around all surfaces, to form connected windings thereon, the deformable stamp having a projecting tip which can fit within the opening of the toroidal core.
摘要:
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.
摘要翻译:湿度传感器,特别是可以区分低湿度值(例如低于60%湿度)和高湿度值(例如90%湿度等)并且改变输出电极(5,6)之间的电容的传感器 通过在衬底(8)上施加互扣梳状电极(1,2)并在衬底上施加由BaRuO 3,V 2 O 5和Na 2 WO 4形成的陶瓷块,其重量关系为(1 +/- 0.4):( 1 +/- 0.4):(0.6 +/- 0.2),优选1:1:0.6。 传感器通过首先制造组分的粉末,将其与玻璃浆料混合,并且如果需要的话更薄,并且通过厚膜技术将所得糊料施加到已经施加电极的陶瓷基板上,以及 然后在550℃至850℃的温度下烧制该基底。该传感器在高于60%相对湿度的湿度范围内特别敏感,特别适用于感测机动车辆挡风玻璃内部的起雾。
摘要:
To increase service life and suppress interferences in high voltage electrodes for the ignition distributing system of internal combustion engines, the electrodes consist of molded and sintered mixture of 50-90% by weight iron powder and 50-10% by weight calcium silicide. Preferably, the electrode has tipstretched contact area of nonalloyed iron.
摘要:
An apparatus for injecting fuel into combustion chambers, in particular of self-igniting internal combustion engines, is proposed, in which a fuel injection nozzle generates an aimed fuel spray and in which an air guide device and a heating device are provided. The fuel being injected is accompanied by an air flow which passes the heating device. The heating device has at least two heating elements of different effectiveness, of which at least one element serves for rapid heating and the other element is provided for continuous use.
摘要:
Device for fuel injection in combustion chambers of, in particular, selfigniting combustion engines with an injection nozzle (10) and a subsequently switched incandescent wire (20) which has a conduit (30) surrounded by a double heating layer (33) on the inside for passing through of the injection streams. The double heating layer (33) consists of an inner heating layer (35) which is separated from a second heating layer (37) by an electrical insulator. In the parallel as well as the series switching of the two heating layers (35,37), a two stage heating of the double heating layer (33) is possible. The inner heating layer (35) reaches the required end temperature required for ignition in a relative short time, while the second heating layer (37) assures a high energy density of the ceramic support mass (38).
摘要:
A rod-like electrical heating element is incorporated in the interior of a tubular solid electrolyte sensor connecting zones of the heating element are disposed on the end face thereof remote from the sensing end. Electrical connecting parts are pressed against the connecting zones of the heating element by means of a spring element. These electrical connecting parts are in electrical contact with the connecting cable of the gas sensor via conductor wires, leads or other connecting means.
摘要:
A method is proposed for through-contacting a circuit board (17), in which the wall (15) of a bore (16) is provided with a metallizing of a conductive thick-film paste (12). The application of the metallizing is effected in a particularly advantageous manner by imprinting the electrically conductive paste (12) by means of an elastically deformable imprinting stamp (11, 12).