Einrichtung zur verringerung der infrarot-emission bei amphibischen fahrzeugen, insbesondere panzerfahrzeugen

with amphibious vehicles, in particular Panzeffahrzeugen. Apart from the mobility, the armor protection and firepower with military vehicles, in particular armoured vehicles, the camouflage is a substantial criterion for the successful fulfillment of tactical missions. Therefore many unity, corrode, particularly however crossing Wasserhindemissen, preferentially with bad visibilities whether in the night, fog, accomplished with dawn or using nebula shells. This grants however to only limited protection, since even simple infrared-observation-turned out, Hot spots " to be made visible and thus vehicles easily recognized can. Thereby the hot leaking out exhaust gases and the cooling air have particularly an unfavorable effect. This effect is strengthened, if the difference to the ambient temperature is very large, as this is present during swimming, since waters have usually a lower temperature than air. Additionally the amphibious vehicles are here in a condition with reduced mobility and/or effect possibility, so that the injuring barness rises by Feindeinwilkung substantially. Usual measures, how the use of thermal protection signs, which are attached before the hot places, or a mixture is called that exhaust gases with the less hot cooling air, causes however only conditioned adapting to the Umgebungstempemtur extreme and results in from it no sufficient infrared camouflage of the vehicles. The invention does not have it itself as a goal set to create a mechanism of the kind initially specified disappear with that those, Hot spots " from the finish almost completely, soda with a view with infrared devices the vehicle practically is recognizable. This is obtained because with an amphibious employment the exhaust stream is directed against the water surface, whereby the leaking out of the exhaust is arranged above the water surface scarcely. During a mechanism according to invention the leaking out exhaust gases will produce a finely sputtered splash-water fog within the direct exhaust withdrawal range. This is reached by the exhaust gases scarcely withdrawing over the water surface due to its high speed and the exhaust stream directed against the water surface. Both the exhaust gases and their Schutzund guidance mechanisms and large parts of the vehicle, in particular the tank hull, on a temperature close of the surrounding waters temperature are cooled down by this splash-water fog. Besides this Wassemebel produces hardly a cold Wassemebelwand look throughable for thermal imaging devices, which serves additionally for the camouflage of the vehicle. Particularly effectively the erfmdungsgemäße mechanism proves, if the angle of the exhaust stream is opposite the vertical one directly or small 60°. A reinforcement of the Vemebelungseffektes caused thereby that the exhaust is provided with an ejector, air sucks in according to invention. By the employment of this ejector, which sucks in additional Umgebungslufi in the swimming enterprise and/or over lamellas led cooling air in the land enterprise, the exhaust velocity and thus the energy that are increased gases at the withdrawal. Additionally this ejector cools the exhaust gases by the dilution with air and reduces thereby the heating of the Wassernebels. Appropriately the En&ohr of the ejector is cone-shaped trained. Below the invention is thereby descriptive on the basis in the design represented a remark example more near, without on this example limited to sparkling wine shows the only figure schematically the mechanism according to invention with employment of a vehicle in the swimming enterprise. In accordance with the design an amphibious vehicle 1 is in the amphibious employment in a Gewässer2. The vehicle 1 is provided with a Schalldämpfer3 for the exhaust gases, which an exhaust pipe 4 follows. This exhaust pipe 4 ends in an ejector 5, whose En&ohr is cone-shaped trained. The Ejektor5 sucks in Luß6 and mixes these with the exhaust gases from the muffler 3. air over lamellas 7 is zugeffthrt. The end piece 8 of the exhaust system is scarcely arranged above the surface of waters 2. The exhaust stream withdrawing from the end piece 8 is directed, in such a manner against the surface of waters 2 that a Spritzwassemebel 9 is produced. As was already implemented, by this Spritzwassemebel 9 in particular the hot exhaust gases are cooled down on a temperature of the surrounding Gewässertemperatttr. The angle A of the exhaust stream opposite the vertical one is preferably smaller or equal to 60°. Ansprfiche Ith mechanism for the decrease of the infrared emission with amphibious vehicles (1), in particular armoured vehicles, thereby characterized, doß with an amphibious employment of the Auspuf trom is directed against the water-upperflat, whereby the leaking out (8) of the exhaust scarcely above the water surface arranged is. 2. Mechanism after Anspmch 1, by characterized that the angle amounts to (A) of the exhaust stream opposite the vertical one smaller or equal 60°. 3. Mechanism according to requirement 1 oder2, by the fact characterized that exhaust with an ejector (5), the Luß (6) is provided sucks in. 4. Mechanism according to requirement 3, by the fact characterized that the final pipe of the ejector (5) is cone-shaped trained.