Engine exhaust emission cooling device

Abstract

The invention discloses an engine exhaust emission cooling device. The engine exhaust emission cooling device comprises an expanding room, a bypass room and a rear expanding room which are connected in sequence, wherein the diameter of a front end pipe of the expanding room is equal to that of an engine exhaust emission pipe, the front end pipe of the expanding room is connected with the upstream of the engine exhaust emission pipe, a rear end pipe of the expanding room is a conical expanding pipe and connected with the bypass room, the rear end of the bypass room is in a wave shape formed by sequential interval arrangement of convex surfaces and concave surfaces in equal numbers, and bypass pieces are tightly connected with an ejector pipe. The engine exhaust emission cooling device has the advantages that the cooling effects are remarkable, a large amount of air can be absorbed into exhaust by negative pressure generated by the device, and thereby, the exhaust temperature can be greatly lowered; the application range is wide, the device can use the constant temperature air in atmosphere as a cooling medium which is mixed with the exhaust without water or other cooling media, and the application of the range of the device is greatly widened; negative effects are absent, the exhaust resistance generated by the device can be reduced by a flow guide measure in the design, and therefore, the influence on engine performances can be avoided.

Description

technical field [0001] The invention belongs to the technical field of exhaust cooling equipment, in particular to an engine exhaust cooling device. Background technique [0002] If the exhaust temperature of the engine is too high and the temperature difference between the engine and the surrounding environment is too large, it is easy to show obvious infrared features, which is conducive to the detection and locking of military targets by infrared detection devices. Therefore, engines for military use need to reduce the exhaust temperature for concealment considerations. [0003] With the application of diesel particulate filter technology, the high-temperature exhaust during the regeneration of the particulate filter not only easily reduces the concealment of the engine, but also brings safety hazards to the surrounding environment, especially in flammable places. Foreign studies have been carried out on the cooling of the exhaust gas during the regeneration of the parti...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an engine exhaust cooling device to solve the defects of narrow application range, complex system structure and negative effects in the prior art

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