CN104329190A - Automobile carbon tank structure - Google Patents

Abstract

The invention discloses an automobile carbon tank structure, which comprises a tank body with a rectangular block structure as a whole. An adsorption tube for connecting with a fuel tank and a desorption tube for connecting with an engine are arranged side by side at one end of the top of the tank body. The other end of the top is also provided with an air vent, which is characterized in that an air vent is connected and fixed on the air vent, and the entrance of the air vent is bent and set downward. The invention has the advantages of simple structure, good protection effect on activated carbon, simple fixing structure with long service life, convenient and fast fixing and high reliability.

Description

Automobile carbon tank structure

technical field

The invention relates to an automobile fuel adsorption system. In particular, it relates to an automobile carbon tank structure.

Background technique

Automobile fuel vapor adsorption and desorption device, commonly known as carbon canister, is the core component of automobile fuel vapor adsorption system, and is generally installed between the gasoline tank and the engine. Since gasoline is a volatile liquid, the fuel tank is often full of vapor at room temperature, and the function of the automotive fuel evaporation adsorption system is to introduce the vapor in the fuel tank into combustion and prevent it from volatilizing into the atmosphere. Its working principle is that because activated carbon has an adsorption function, when the car is running or turned off, the gasoline vapor in the fuel tank enters the activated carbon tank through the pipeline and is absorbed by the activated carbon. After the engine is turned off, gasoline vapor and fresh air are mixed in the tank and stored in the activated carbon tank. When the engine is started, the solenoid valve of the fuel evaporation purification device installed between the activated carbon tank and the intake manifold is opened, and the activated carbon Gasoline vapors in the tank are drawn into the intake manifold for combustion.

An existing carbon tank structure includes a tank body, an adsorption tube for connecting to a fuel tank and a desorption tube for connecting to an engine are arranged side by side at one end of the top of the tank body, and an air vent is provided at the other end of the top of the tank body. For example, a carbon canister disclosed in Chinese Patent Application No. 201120012884.4 belongs to this structural form.

After the carbon tank of this structure is installed, when the engine is not working, gasoline vapor enters the tank from the adsorption tube and is adsorbed in the activated carbon in the tank. When the engine is started, the electromagnetic valve at the engine intake manifold is opened. Under the action of suction, the gasoline vapor in the tank is sucked into the intake manifold to participate in combustion. Wherein the air vent is communicated with the atmosphere so that the above process can be successfully completed.

In this existing carbon canister structure, since the air vent is set upward, it is easy to accumulate dust or enter muddy water, thereby causing blockage and destroying the adsorption effect of activated carbon, poor protection effect on activated carbon, and short service life of the carbon canister. In addition, such an existing carbon tank structure is generally installed and fixed by a hoop, which has high cost and poor fixing effect.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide an automobile carbon canister structure with simple structure, good protection effect on activated carbon and long service life, and further improve its fixing reliability.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A car carbon canister structure, including a tank body with a rectangular block structure as a whole. One end of the top of the tank body is arranged side by side with an adsorption tube for connecting with a fuel tank and a desorption tube for connecting with an engine. The other end of the top of the tank body is also An air vent is provided, and it is characterized in that an air vent pipe is connected and fixed on the air vent port, and the entrance of the air vent pipe is bent and set downward.

In the present invention, a trachea is connected and fixed on the air vent, and the trachea is bent and the inlet is set downward. In this way, the ventilation function of the air vent can be guaranteed, and at the same time, dust or muddy water can be prevented from entering the interior of the carbon canister through the air vent, and the protection effect on the activated carbon is good, and the service life of the carbon canister is long.

As an optimization, a pair of clips are formed on the inner surface of the tank protruding outwards, and the air vent tube is a hose that is bent downward toward the inner surface of the tank and then snapped into the clips for fixation.

After optimization in this way, the use of hose for the vent pipe can save costs, and the vent pipe is bent towards the inner surface of the tank body, and is separated between the tank body and the frame, which can better prevent foreign matter from entering the tank through the vent pipe body. At the same time, the ventilation pipe is fixed by clips, which can prevent the ventilation pipe from shaking, causing wear or abnormal noise.

As an optimization, the inner surface of the carbon tank is also provided with a mounting structure, the mounting structure includes a mounting plate, the mounting plate is installed on the inner surface of the carbon tank at intervals by a mounting bracket, and the upper part of the mounting plate is provided with an upper connection extending horizontally outward. One side of the mounting plate has a side connection protrusion extending along the side, the upper connection protrusion and the side connection protrusion are both provided with bolt connection holes, and the middle part of the installation plate is provided with an insertion hole.

Like this, when installing, can rely on the plug-in block on the vehicle frame to be inserted in the plug-in hole on the mounting plate to limit, then rely on bolts to connect the bolt connection hole on the upper connection protrusion of the mounting plate and the side connection protrusion and The corresponding parts of the frame are three-dimensionally fixed from two different directions. The structure is simple, and the fixing effect is greatly improved.

As an optimization, the position of the vent and the connection port of the adsorption tube and the desorption tube are arranged on a straight line, and the position of the connection port of the adsorption tube is located between the positions of the vent port and the connection port of the desorption tube. In this way, the adsorption and desorption effects can be better guaranteed.

To sum up, the present invention has the advantages of simple structure, good protection effect on activated carbon, simple fixed structure with long service life, convenient and fast fixing and high reliability.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a side view of FIG. 1 .

Detailed ways

The present invention will be further described in detail below in combination with specific embodiments.

As a preferred embodiment during specific implementation: as shown in Figures 1-2, a car carbon canister structure includes a tank body 1 with a rectangular block structure as a whole, and one end of the top of the tank body 1 is arranged side by side for use with The adsorption pipe 2 connected to the fuel tank and the desorption pipe 3 used to be connected to the engine, the other end of the top of the tank body 1 is also provided with a vent, and a vent pipe 4 is connected and fixed on the vent port, and the vent pipe 4 The curved rear entrance is set downward.

Wherein, a pair of clips 5 protrude outwardly from the inside surface of the tank body 1 , and the air vent pipe is a hose, and 4 bends downward toward the inside surface of the tank body, and then snaps into the clips 5 for fixation.

In this way, the air vent pipe adopts a flexible pipe to save cost, and the air vent pipe bends toward the inner surface of the tank body, and is separated between the tank body and the vehicle frame, so that foreign matter can be better prevented from entering the tank body through the air vent pipe. At the same time, the ventilation pipe is fixed by clips, which can prevent the ventilation pipe from shaking, causing wear or abnormal noise.

Wherein, the inner surface of the carbon tank 1 is also provided with a mounting structure, the mounting structure includes a mounting plate 6, the mounting plate 6 is installed on the inner surface of the carbon tank 1 at intervals by a mounting bracket 7, and the upper part of the mounting plate 6 is provided with a horizontal The upper connecting protrusion 8 extending outward, one side of the mounting plate 6 has a side connecting protrusion 9 extending along the side, and the upper connecting protrusion 8 and the side connecting protrusion 9 are provided with bolt connection holes. The middle part of the mounting plate is provided with an insertion hole.

Like this, when installing, can rely on the plug-in block on the vehicle frame to be inserted in the plug-in hole on the mounting plate to limit, then rely on bolts to connect the bolt connection hole on the upper connection protrusion of the mounting plate and the side connection protrusion and The corresponding parts of the frame can be fixed from two directions. The structure is simple, and the fixing effect is greatly improved.

Wherein, the position of the vent and the connection port of the adsorption tube 2 and the desorption tube 3 is arranged on a straight line, and the position of the connection port of the adsorption tube 2 is located between the position of the vent port and the position of the connection port of the desorption tube 3 . In this way, the adsorption and desorption effects can be better guaranteed.

During specific implementation, in the inner cavity of the tank, the position between the vent and the adsorption tube is also provided with a partition plate extending downward to the middle of the tank inner cavity, so that the ventilation path between the vent and the adsorption tube can be extended to avoid The gas sucked by the adsorption tube overflows from the vent.

Claims (4)

1. A car carbon canister structure, comprising a tank body with a rectangular block structure as a whole, one end of the tank body top is arranged side by side with an adsorption tube for being connected with the fuel tank and a desorption tube for being connected with the engine, and the other end of the tank body top is One end is also provided with a ventilation port, which is characterized in that a ventilation pipe is connected and fixed on the ventilation port, and the entrance of the ventilation pipe is bent and set downward. 2. The automobile carbon canister structure according to claim 1, wherein a pair of clips are formed on the inner surface of the tank protruding outwards, and the air pipe is a hose and is directed toward the inner surface of the tank body. After bending down, snap into the clip to fix it. 3. The automobile carbon canister structure according to claim 1, characterized in that, the inner surface of the canister is also provided with a mounting structure, the mounting structure includes a mounting plate, and the mounting plate is installed on the inside of the carbon canister at intervals by a mounting bracket On the surface, the upper part of the mounting plate is provided with an upper connecting protrusion extending horizontally outward, and one side of the mounting plate is provided with a side connecting protrusion extending along the side, and the upper connecting protrusion and the side connecting protrusion are both provided with bolts A connecting hole, the middle part of the mounting plate is provided with an insertion hole. 4. The automobile carbon canister structure according to claim 1, wherein the position of the connection port of the vent and the adsorption tube and the desorption tube is arranged on a straight line, and the position of the connection port of the adsorption tube is located between the vent port and the desorption tube. between the connection ports of the desorption tube.