CN200939828Y

CN200939828Y - Automobile fuel tank

Info

Publication number: CN200939828Y
Application number: CN 200620131593
Authority: CN
Inventors: 王明奕; 石永金; 王向阳
Original assignee: Pan Asia Technical Automotive Center Co Ltd; Shanghai General Motors Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2006-08-29
Filing date: 2006-08-29
Publication date: 2007-08-29
Anticipated expiration: 2016-08-29

Abstract

The utility model relates to an automobile gasoline tank. The gasoline tank is composed of a tank body storing fuels, an oil pipe connected with the tank body, a float valve and an air vent valve positioned on the tank body and a charcoal tank communicated with the air vent valve. The float valve is connected with the charcoal tank. The automobile gasoline tank can prevent the air vent pipe from choke by the fuels. The utility model is simple in the structure, easy to be assembled, lowering the cost and reducing the environmental pollution of oil and gas.

Description

Automotive oil tank

Technical field

The utility model relates to a kind of automotive oil tank, relates in particular to a kind of car fuel tank.

Background technology

Fig. 1 shows the structural representation of general-utility car fuel tank.As shown in the figure, using nozzle 86 under the situation of holding hydraulic fluid port 83 filling oil plants of fuel filler pipe 82, along with the rising of the oil plant liquid level in the fuel tank main body 81, be that breather pipe 84a is discharged outside to by holding the hydraulic fluid port 83 from first breather at the air of fuel tank main body 81 upper spaces.

But owing to the oil plant liquid level rising of fuel tank main body 81 is sunk under the oil plant liquid level of fuel tank main body 81 float valve 85, in this case, the air in fuel tank main body 81 upper spaces is closed; When continuation was refueled to it, the air pressure of the air in fuel tank main body 81 upper spaces can raise, and then made the oil plant liquid level in the fuel filler pipe 82 raise because of nozzle 86 continues to refuel.At last, when the oil plant liquid level in the fuel filler pipe 82 reaches the height of filler nozzle in the nozzle 86, stop automatically refueling.

In addition, in refueling process, connection for bbreather pipe 89 at first is in closed condition.When engine operation, oil plant in fuel tank main body 81 passes through fuel feed pipe 88 fuel feeding by the oil pump in the fuel tank 87, and, when gaseous tension in the fuel tank reaches a limit value, connection for bbreather pipe 89 is opened, fuel tank main body 81 is that breather pipe 84b takes a breath by connection for bbreather pipe 89 by second breather, thereby has avoided fuel tank be out of shape even break because of internal pressure raises in the vehicle use.

But above-mentioned fuel tank fuel loading system inconvenience when actual installation is especially when at fuel tank main body 81 with hold when needing to install other mechanisms between the hydraulic fluid port 83.

See also Fig. 2, in order to address the above problem, the breather pipe 84a of fuel tank adopts reclinate structure.Yet, owing to shake during running car, oil plant in fuel tank main body 81 can flow into the sweep 812 of breather pipe 84a, thereby accumulate to block breather pipe 84a at this place, therefore, in the gas filed operation, the air impassabitity breather pipe 84a in fuel tank main body 81 upper spaces discharges, when continuation was refueled to it, the air pressure of the air in fuel tank main body 81 upper spaces can raise; At last, when the oil plant liquid level in the fuel filler pipe 82 reaches the height of filler nozzle in the nozzle 86, stop automatically refueling, make oil tank of vehicle main body 81 can't fill it up with oil.

In addition, in fuel loading system illustrated in figures 1 and 2, in refueling process, allow oil gas to be discharged in the atmosphere, therefore can cause certain pollution environment by the hydraulic fluid port 83 that holds of breather pipe 84a.

Therefore, the utility model proposes a kind of new automotive oil tank, to overcome above-mentioned defective.

The utility model content

The purpose of this utility model be to provide a kind of simple in structure, easy for installation, environmental pollution reduces and the automotive oil tank that can avoid its breather pipe to be blocked by oil plant.

For achieving the above object, automotive oil tank of the present utility model is such design-calculated:

A kind of automotive oil tank, it comprises the fuel tank main body that is used for storage of fuels, with described fuel tank main body bonded assembly fuel filler pipe, be located at the float valve and the connection for bbreather pipe of described fuel tank main body upper end, and with described connection for bbreather pipe bonded assembly canister, described connection for bbreather pipe is connected with described canister by second connection pipe, and described float valve is connected with described canister by first connection pipe.

Preferably, described first connection pipe directly is communicated with described canister.

Preferably, described first connection pipe is communicated in second connection pipe.

Further preferably, all parts of described first connection pipe are greater than or equal described float valve upper end to ground-surface distance and arrive ground-surface distance.And described first connection pipe extends to continue the rising mode.

Automotive oil tank described in the utility model has avoided oil plant to block its breather pipe, and it is simple in structure, easy for installation, and the pollution of environment is reduced.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail, wherein

Fig. 1 is common fuel tank fuel loading system structural representation;

Fig. 2 is the structural representation with the general-utility car fuel tank that is bent downwardly breather pipe partly;

Fig. 3 is the structural representation of automotive oil tank of the present utility model.

The specific embodiment

See also Fig. 3, automotive oil tank 1 of the present utility model comprise fuel tank main body 10, with these fuel tank main body 10 bonded assembly fuel filler pipes 12, the float valve 14 of being located at fuel tank main body 10 upper ends and connection for bbreather pipe 16, with the canister 18 that described float valve 14 and connection for bbreather pipe 16 are communicated with, described float valve 14 and connection for bbreather pipe 16 are communicated with described canister 18 by first connection pipe 15 and second connection pipe 17 respectively.

Wherein, described fuel tank main body 10 is roughly rectangular structure, and it is installed in car underbody rear portion lower surface.Be provided with oil pump 107 in this fuel tank main body 10, this oil pump 107 links to each other with driving engine by fuel feed pipe 108.

One end of described fuel filler pipe 12 is communicated with the bottom of fuel tank main body 10, and along car bottom side horizontal-extending, oblique then rising is held hydraulic fluid port 120 so that its other end becomes, and this holds the side surface that hydraulic fluid port 120 leads to car body, refuels with convenient.

Described float valve 14 is embedded at the top of fuel tank main body 10, and its lower end places fuel tank main body 10 upper inside, and the outside face at fuel tank main body 10 is then exposed in the upper end.When the liquid level of fuel was elevated to oil plant and fills it up with liquid level F, float valve 14 can cut out.

Connection for bbreather pipe 89 described in the structure of described connection for bbreather pipe 16 and effect and the background technology is roughly the same, so do not give unnecessary details at this.This connection for bbreather pipe 16 is communicated with canister 18 by described second connection pipe 17, with being communicated with of realization and outside air.

Described canister 18 1 ends link to each other with fuel tank main body 10, and an end is communicated with atmosphere, and an other end then connects to driving engine.10 pairs of oil gas of this canister have filtration, to reduce the contamination level of discharging.

Described float valve 14 is communicated with described canister 18 by first connection pipe 15, and these first connection pipe, 15 1 ends are communicated with the upper end of described float valve 14, and the other end is communicated in second connection pipe 17.As alternative, the other end of described first connection pipe 15 also can directly be communicated in described canister 18 places.Except that or summary height identical with the float valve 14 upper ends ground-surface height of distance with described float valve 14 connecting bridges, the ground-surface height of other partial distances of described first connection pipe 15 is all greater than the ground-surface height of described float valve 14 upper ends distance, to make things convenient for the backflow of oil plant.In addition, described first connection pipe 15 is extended to continue the rising mode by float valve 14 upper ends, rather than rising to fall after one section, to prevent the line segments of easily accumulating oil plant.

In automobile actual travel process, the common no show F of oil plant liquid level liquid level in the fuel tank main body 10, this moment, described float valve 14 was a connected state, so in the automobile bumpiness, described oil plant can be splashed in the part pipeline of first connection pipe 15 on a small quantity by float valve 14, because this first connection pipe 15 is communicated with ambient atmosphere, simultaneously, except that or summary height identical with the float valve 14 upper ends ground-surface height of distance with described float valve 14 connecting bridges, the ground-surface height of other parts distance of described first connection pipe 15 is all greater than the ground-surface height of described float valve 14 upper ends distance, so can ensure the backflow of the oil plant that is splashed into; At some in particular cases, for example automobile is when cross-country, its jolt comparatively violent and also amplitude bigger, may make oil plant bigger by the amount that float valve 14 is splashed into first connection pipe 15, at this moment, because described first connection pipe 15 is extended to continue the rising mode by float valve 14 upper ends, rather than rising to fall after one section, so can not produce long-pending oil pipe highway section, thereby ensure that gasoline can not accumulated in its first connection pipe 15 substantially.So, in the refueling process after automobile is travelling, can not be created in gasoline and not fill it up with and just stop the gas filed phenomenon automatically.

Claims

1. automotive oil tank, comprise the fuel tank main body that is used for storage of fuels, with described fuel tank main body bonded assembly fuel filler pipe, be located at the float valve and the connection for bbreather pipe of described fuel tank main body upper end, and with described connection for bbreather pipe bonded assembly canister, described connection for bbreather pipe is connected with described canister by second connection pipe, it is characterized in that described float valve is connected with described canister by first connection pipe.

2. automotive oil tank according to claim 1 is characterized in that, described first connection pipe directly is communicated with described canister.

3. automotive oil tank according to claim 1 is characterized in that, described first connection pipe is communicated in second connection pipe.

4. according to each described automotive oil tank in the aforementioned claim, it is characterized in that all parts of described first connection pipe are greater than or equal described float valve upper end to ground-surface distance and arrive ground-surface distance.

5. automotive oil tank according to claim 4 is characterized in that, described first connection pipe is extended by the float valve upper end to continue the rising mode.