Automobile gearbox air exhausting device

Abstract

The invention provides an automobile transmission exhaust device with less energy consumption. The exhaust channel in the exhaust plug body of the exhaust plug runs through the upper and lower ends of the exhaust plug body. The annular protrusion extending radially outward from the plug body, the inner diameter of the cavity of the exhaust plug cover is slightly larger than the outer diameter of the annular protrusion of the exhaust plug body of the exhaust plug and the inner diameter of the exhaust plug cover At least three connection protrusions at the lower end of the exhaust plug cover cavity are connected with the annular protrusions of the exhaust plug body of the exhaust plug, and in the circumferential part outside the joint, the row of the exhaust plug cover There is a gap between the lower end of the air plug cover cavity and the annular protrusion of the exhaust plug body of the exhaust plug. The diameter of the blocking piece between the annular protrusions of the air plug is larger than the inner diameter of the upper part of the exhaust passage and smaller than the inner diameter of the cavity of the exhaust plug cover.

Description

technical field [0001] The invention relates to an automobile transmission, in particular to an exhaust device for an automobile transmission. Background technique [0002] Those skilled in the art know that when the automobile transmission is working, the temperature of the oil in the transmission case will change with the change of the internal air volume caused by the operation of various gears and other moving parts in the transmission case. The air pressure and temperature in the air will be different from the external atmospheric pressure and atmospheric temperature, which is the so-called pumping effect. This pumping effect consumes energy. In order to reduce this part of energy consumption, the automobile transmission is usually equipped with an exhaust device that connects the inside and outside of the transmission case. The outside atmosphere is kept in balance, so as to ensure the normal operation of the transmission; the second is to block the dust, dirt partic...

AI Technical Summary

Problems solved by technology

The existing technical problem of the automotive transmission exhaust device of this structure is: the inside of the transmission case body 2 is connected with the outside through the exhaust passage 11 of the exhaust plug 1, and the oil liquid vapor inside the transmission case body 2 will directly pass through. The lower end of the exhaust plug body 10 through the exhaust plug 1 enters the exhaust channel 11, and then volatilizes from the exhaust channel 11 to the outside of the transmission case 2 from both sides of the upper end of the exhaust plug body 10, as figure 1 As shown by the dotted arrow in the middle, the energy consumption of the automobile transmission is more

At the same time, dust, dirt particles or moisture in the external atmosphere may figure 1 The direction opposite to the arrow in the dotted line enters the exhaust passage 11 from both sides of the upper end of the exhaust plug body 10 of the exhaust plug 1, and then enters the transmission case 2 from the lower end of the exhaust plug body 10 through the intake and exhaust passage 11. Internally, the lubricating oil in the transmission case 2 will fail or the internal parts will be corroded, and the anti-pollution effect will be poor. If this happens for a long time, it will lead to the failure of the transmission function

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