An exhaust rainproof cap with drainage and noise reduction structure

Abstract

The invention relates to an exhaust and rain-proof cap with a drainage and silence structure, and belongs to the technical field of an exhaust decorative tail pipe of an automobile exhaust system. The cap comprises an outer shell, wherein the upper end of the outer shell is provided with an end cover which sinks towards the interior of the outer shell; the end cover is provided with a first water leakage hole and an exhaust hole which is formed slantwise; the first water leakage hole is positioned in the lower side of the exhaust hole; the lower side of the end cover is hermetically connected with the top of the silence pipe; the side wall of the silence pipe is provided with a plurality of silence holes; the bottom of the silence pipe extends out of the outer shell; the bottom of the outer shell is provided with a second water leakage hole; the silence holes are positioned in the upper side of the second water leakage hole. The exhaust gas flow direction of the exhaust and rain-proof cap faces upwards to guarantee that people and a vehicle body are not blown by tail gas, and the influence of the noise of the exhaust tail pipe on an entire vehicle is reduced.

Description

technical field [0001] The invention relates to an exhaust decorative tailpipe of an automobile exhaust system, in particular to an exhaust rainproof cap with drainage and noise reduction structures. Background technique [0002] At present, the exhaust systems of military off-road vehicles are all required to have water wading function. To meet this function, firstly, each assembly and connection of the exhaust system must be sealed; secondly, the lowest point of the exhaust outlet must be higher than the wading height limit (1.2m or 1.5m); in addition , The outlet of the exhaust tail pipe should be protected from rain. Otherwise, when the car is wading or raining, water will enter the engine through the exhaust system, causing serious risks such as engine flooding and flameout, cylinder and piston corrosion. The exhaust tailpipe of military off-road vehicles must reasonably guide the direction of the exhaust airflow while ensuring the wading height of the exhaust port. ...

AI Technical Summary

Problems solved by technology

Otherwise, when the car is wading or raining, water will enter the engine through the exhaust system, causing serious risks such as engine flooding and flameout, cylinder and piston corrosion, etc.

The exhaust tailpipe of military off-road vehicles must reasonably guide the direction of the exhaust airflow while ensuring the wading height of the exhaust port. Exterior)

The position of the exhaust port and the arrangement of the outlet direction, the position of the exhaust port of passenger cars and commercial vehicles is mostly arranged at the rear of the car, and the exhaust direction is backward or diagonally downward, which meets the requirements of not blowing people and the body, but The wading height is limited; a few commercial vehicles exhaust from the side, this exhaust method is easy to blow people, and the noise of the exhaust tailpipe will easily affect the passing noise of the whole vehicle; a few commercial vehicles and foreign off-road military vehicles arrange the exhaust port On the top of the car, the exhaust direction is discharged obliquely upward or downward, which meets the requirements of not blowing people and the body, and the wading height is easy to meet, but it is not rainproof

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