CN217495830U - Fuel supply device for engine, engine system and vehicle - Google Patents

Abstract

The utility model provides a fuel feeding device and engine system and vehicle for engine, the utility model discloses a fuel feeding device for engine has the main fuel tank of engine for the vehicle to and the vice fuel cell of main fuel tank intercommunication, and this fuel feeding device still includes the notes oil pipe, and notes oil pipe intercommunication is on vice fuel cell, and main fuel tank and vice fuel cell remain the intercommunication throughout, and the liquid level is higher than the full liquid level of annotating of main fuel tank to the full liquid level of annotating of vice fuel cell. The utility model discloses a fuel feeding device for engine through making main fuel tank and vice fuel cell remain the intercommunication throughout to make the full liquid level of annotating of vice fuel cell be higher than the full liquid level of annotating of main fuel tank, can make the fuel that introduces vice fuel cell via the notes oil pipe fill main fuel tank and vice fuel cell in order, so that when simplifying this fuel feeding device for engine's structure, promote the smooth and easy nature when annotating the fuel in the vice fuel cell of notes oil pipe.

Description

Fuel supply device for engine, engine system and vehicle

Technical Field

The utility model relates to a vehicle parts technical field, in particular to fuel feeding device for engine. Meanwhile, the utility model discloses still relate to an dispose this engine with fuel supply apparatus's engine system to and a vehicle that is equipped with this engine system.

Background

The fuel supply device is a device for supplying fuel to an engine, and mainly includes a fuel tank for storing fuel, a filler pipe communicating with the inside of the fuel tank for replenishing the fuel to the fuel tank, and a fuel supply pipe for supplying fuel to the engine. In order to prevent fuel in the fuel tank from splashing or volatilizing and escaping due to oscillation during the running process of the vehicle, a carbon tank communicated with the inside of the fuel tank is arranged in the fuel supply device to adsorb gasoline vapor volatilized and escaped in the fuel tank.

Most of the conventional fuel supply devices are designed with only one fuel tank for storing fuel, and the volume of the fuel tank is increased as much as possible in order to increase the capacity of the fuel tank as much as possible and to increase the range of the vehicle. However, due to the limitation of the arrangement space in the vehicle, the regular fuel tank often cannot meet the capacity requirement of the vehicle for the fuel tank, and the fuel tank is made into the irregular shape so as to avoid other components on the vehicle and improve the capacity of the fuel tank. However, such an arrangement not only results in an unsightly appearance of the fuel tank, but also results in a complicated machining process, and in addition, the risk of oil leakage is also easily generated at the weld position.

Although the prior art also adopts a main fuel tank and an auxiliary fuel tank to increase the capacity, when the fuel is replenished into the fuel tank, the main fuel tank and the auxiliary fuel tank are mostly independently replenished, so that the overall structure of the fuel supply device is more complicated, and the fuel supply device is limited by the structure of the fuel supply device, so that the smoothness is poor when the fuel is replenished into the fuel tank.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a fuel supply device for an engine, so as to simplify the structure of the fuel supply device and improve the convenience of the fuel tank during use.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a fuel supply device for an engine, comprising a main fuel tank of the engine for a vehicle, and a sub-fuel tank communicating with the main fuel tank, the fuel supply device further comprising: a filler pipe communicating with the sub-tank to introduce external fuel into the sub-tank; the main fuel tank and the auxiliary fuel tank are always communicated, and the full filling level of the auxiliary fuel tank is higher than the full filling level of the main fuel tank, so that the main fuel tank and the auxiliary fuel tank are sequentially filled with the fuel introduced into the auxiliary fuel tank through the filling pipe.

Further, when the main fuel tank is full, the liquid level of the fuel contained in the auxiliary fuel tank is not more than 20% of the height of the auxiliary fuel tank cavity.

Further, the bottom surface of the secondary fuel tank cavity is not lower than the top surface of the primary fuel tank cavity; and an oil pipe for communicating the main fuel tank and the auxiliary fuel tank is arranged on the auxiliary fuel tank close to the bottom of the auxiliary fuel tank.

Further, a vent pipe is communicated between the main fuel tank and the sub-fuel tank.

Further, detection devices for detecting the fuel level are provided in the main fuel tank and the sub fuel tank, respectively.

Further, the detection device is a liquid level sensor.

Further, the fuel supply apparatus further includes: a canister housing an active material; fuel vapor lines are connected between the canister and the primary and secondary fuel tanks, respectively, to guide fuel vapor from the primary and secondary fuel tanks into the canister, respectively.

Furthermore, the two fuel vapor pipelines are respectively connected and arranged at the tops of the main fuel tank and the secondary fuel tank.

Compared with the prior art, the utility model discloses following advantage has:

fuel feeding device for engine, through setting up the filler pipe on the secondary fuel case, and make main fuel case and secondary fuel case remain the intercommunication throughout, and the full liquid level of annotating of secondary fuel case, be higher than the full liquid level of annotating of main fuel case, can make the fuel that introduces the secondary fuel case via the filler pipe fill main fuel case and secondary fuel case in order, so that when simplifying this fuel feeding device for engine's structure, promote the smooth and easy nature when the filler pipe fills the fuel to this fuel feeding device, and because of main fuel case and secondary fuel case remain the intercommunication throughout, then in the use, be convenient for realize along with the fuel consumption in the main fuel case, the fuel in the secondary fuel case can be in automatic flow to the main fuel case under the effect of gravity, with fuel to replenish the main fuel incasement. In addition, the vent pipe is communicated between the main fuel tank and the auxiliary fuel tank, so that the smoothness of the fuel in the auxiliary fuel tank flowing into the main fuel tank is improved.

Another object of the present invention is to provide an engine system, which includes an engine, and the fuel supply device for the engine as described above for supplying fuel to the engine.

Furthermore, the utility model also provides a vehicle, this vehicle is equipped with the engine system as described above.

The utility model discloses an engine system and vehicle and foretell fuel feeding device for engine have the same beneficial effect for prior art, no longer describe herein.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of an overall structure of a fuel supply device for an engine according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a fuel flow direction and an air flow direction of a fuel supply device for an engine according to an embodiment of the present invention when fuel is filled;

fig. 3 is a schematic flow diagram of fuel vapor in the fuel supply apparatus for engine according to the embodiment of the present invention.

Description of reference numerals:

1. a primary fuel tank; 2. a sub-tank; 3. an oil filling pipe; 4. an oil pipe; 5. a breather pipe; 6. a detection device; 7. a carbon tank; 8. a fuel vapor line; 9. a valve;

A. a fuel flow direction; B. a gas flow direction; C. fuel vapor flow path.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present embodiment relates to a fuel supply apparatus for an engine having, in its overall structure, a main fuel tank 1 of an engine for a vehicle, and a sub-fuel tank 2 communicating with the main fuel tank 1, and further including a filler pipe 3, the filler pipe 3 communicating with the sub-fuel tank 2 to introduce external fuel into the sub-fuel tank 2. When in use, the main fuel tank 1 and the auxiliary fuel tank 2 are always communicated, and the full filling level of the auxiliary fuel tank 2 is higher than the full filling level of the main fuel tank 1, so that the main fuel tank 1 and the auxiliary fuel tank 2 are filled with fuel introduced into the auxiliary fuel tank 2 through the filling pipe 3 in sequence.

Based on the above overall description, as a preferred embodiment, as shown in fig. 1, in the present embodiment, the filler pipe 3 is provided on the sub-tank 2 and near the top of the sub-tank 2, so as to improve the smoothness when filling the sub-tank 2 with fuel through the filler pipe 3, and by always maintaining communication between the main tank 1 and the sub-tank 2, the sequential filling of the main tank 1 and the sub-tank 2 through the single filler pipe 3 is facilitated, thereby simplifying the overall structure of the fuel supply apparatus and facilitating the further improvement of the smoothness when filling the fuel supply apparatus with fuel through the filler pipe 3.

In addition, as a preferred embodiment, in the present embodiment, when the main fuel tank 1 is filled up, the liquid level of the fuel contained in the sub fuel tank 2 is not more than 20% of the height of the reservoir of the sub fuel tank 2, so that the fuel in the sub fuel tank 2 can be timely replenished into the main fuel tank 1, and in the specific implementation, when the main fuel tank 1 is filled up, the sub fuel tank 2 may be filled up with no fuel, or the liquid level of the fuel contained in the sub fuel tank 2 may occupy 5%, 10%, 15%, 20% of the height of the reservoir of the sub fuel tank 2, and the like.

In specific design, in the present embodiment, preferably, the bottom surface of the cavity of the secondary fuel tank 2 is higher than the top surface of the cavity of the primary fuel tank 1, and an oil pipe 4 for communicating the primary fuel tank 1 and the secondary fuel tank 2 is disposed on the secondary fuel tank 2 near the bottom of the secondary fuel tank 2. The arrangement is convenient to realize that when the fuel liquid level in the main fuel tank 1 is lower than the full filling level, the fuel in the auxiliary fuel tank 2 flows into the main fuel tank 1 until the fuel liquid level in the main fuel tank 1 reaches the full filling level. With the above arrangement, when the fuel supply apparatus is filled with fuel through the filler pipe 3, when the main fuel tank 1 is filled, no fuel is present in the sub fuel tank 2, and as shown in fig. 2, the fuel flowing into the sub fuel tank 2 through the filler pipe 3 enters the main fuel tank 1 and is stored in the main fuel tank 1, and when the liquid level of the fuel in the main fuel tank 1 reaches the full filling level, the fuel entering the sub fuel tank 2 through the filler pipe 3 does not enter the main fuel tank 1 again, but is directly stored in the sub fuel tank 2.

In addition, the bottom surface of the cavity of the secondary fuel tank 2 is higher than the top surface of the cavity of the primary fuel tank 1, and an oil pipe 4 which enables the primary fuel tank 1 and the secondary fuel tank 2 to be always communicated is arranged between the primary fuel tank 1 and the secondary fuel tank 2, so that when the fuel in the primary fuel tank 1 is consumed, the fuel in the secondary fuel tank 2 can automatically flow into the primary fuel tank 1 under the action of gravity, and the fuel in the primary fuel tank 1 is supplemented.

In addition, because the fuel supply device supplies oil to the main fuel tank 1 for the engine all the time in the using process and the main fuel tank 1 and the auxiliary fuel tank 2 are always communicated, structures such as a switching valve and the like are not needed to be arranged to control the connection switching between the main fuel tank 1 and the auxiliary fuel tank 2 and the engine, and a valve for controlling the connection or disconnection of the oil pipe 4 is not needed to be arranged on the oil pipe 4, so that the structure of the device is further simplified, and the reliability of the device in operation is improved.

Of course, it is also possible to make the bottom surface of the cavity of the sub-tank 2 slightly lower than the top surface of the cavity of the main tank 1, in addition to making the bottom surface of the cavity of the sub-tank 2 higher than the top surface of the cavity of the main tank 1, and at this time, when the fuel supply apparatus is filled with fuel through the filler pipe 3, the fuel entering the sub-tank 2 through the filler pipe 3 still enters the main tank 1 and is stored in the main tank 1.

When the height of the oil liquid in the main fuel tank 1 is flush with the bottom surface of the cavity of the auxiliary fuel tank 2, one part of the fuel entering the auxiliary fuel tank 2 through the filling pipe 3 enters the main fuel tank 1, the other part of the fuel is left in the auxiliary fuel tank 2, the liquid level of the fuel in the main fuel tank 1 is flush with the liquid level of the fuel in the auxiliary fuel tank 2 and gradually rises until the main fuel tank 1 reaches the full filling height, and the fuel entering the auxiliary fuel tank 2 through the filling pipe 3 does not enter the main fuel tank 1 any more but is stored in the auxiliary fuel tank 2 until the liquid level of the fuel in the auxiliary fuel tank 2 reaches the full filling height.

It should be noted that the above arrangement in which the bottom surface of the cavity of the sub-tank 2 is higher or slightly lower than the top surface of the cavity of the main tank 1 is merely an excellent embodiment, and the specific arrangement may be specifically selected depending on the arrangement space and the arrangement position of the fuel supply device on the vehicle. Of course, the above description only defines the height position relationship between the main fuel tank 1 and the sub fuel tank 2, and the position relationship between the main fuel tank 1 and the sub fuel tank 2 in the horizontal direction may be determined specifically according to the layout space and layout position of the fuel supply device on the vehicle.

In addition, in order to ensure that the fuel in the sub-tank 2 can smoothly flow into the main tank 1, a vent pipe 5 is communicated between the main tank 1 and the sub-tank 2 to ensure the pressure balance between the main tank 1 and the sub-tank 2, so that the fuel in the sub-tank 2 can conveniently flow into the main tank 1 through a fuel pipe 4. In order to facilitate the filling of the auxiliary fuel tank 2 with fuel through the filler pipe 3, as a preferred embodiment, a vent pipe 5 is also disposed between the auxiliary fuel tank 2 and the filler pipe 3 in the present embodiment to ensure pressure balance between the inside of the auxiliary fuel tank 2 and the filler pipe 3, so as to facilitate the filling of the auxiliary fuel tank 2 with fuel through the filler pipe 3. When the fuel supply apparatus is filled with fuel through the filler pipe 3, the fuel flow direction a and the gas flow direction B in the main tank 1 and the sub-tank 2 are as shown in fig. 2.

In order to detect the liquid level of the fuel in the main fuel tank 1 and the sub fuel tank 2, as shown in fig. 1, in the present embodiment, the fuel level detecting devices 6 are respectively disposed in the main fuel tank 1 and the sub fuel tank 2, so that the liquid level of the fuel in the main fuel tank 1 and the sub fuel tank 2 can be conveniently detected during the use of the fuel supply device, and the user can be reminded to replenish the fuel when the fuel is insufficient. In addition, the fuel supply device is convenient to detect the adding amount of the fuel in the process of adding the fuel to the fuel supply device, and the fuel overflow caused by excessive fuel adding is prevented. And the detection means 6 in this embodiment is preferably a level sensor.

The fuel supply device further includes a canister 7, and the canister 7 contains an active material. Fuel vapor lines 8 are connected between the canister 7 and the main and sub fuel tanks 1 and 2, respectively, to guide fuel vapor from the main fuel tank 1 and fuel vapor from the sub fuel tank 2 into the canister 7, respectively, thereby adsorbing fuel vapor generated in the main and sub fuel tanks 1 and 2.

As shown in fig. 1, two fuel vapor lines 8 are connected to the top of the main fuel tank 1 and the sub fuel tank 2, respectively. In addition, in order to control the on/off of the fuel vapor line 8, a valve 9 is provided on the vapor line connecting the tops of the main fuel tank 1 and the sub fuel tank 2, and the valve 9 is preferably an ROV valve. The fuel vapor flow path C of the fuel vapor during the entrance into the canister 7 is shown in fig. 3.

The fuel supply apparatus for an engine according to the present embodiment is configured to constantly communicate the main fuel tank 1 and the sub fuel tank 2, and to make the full filling level of the sub fuel tank 2 higher than the full filling level of the main fuel tank 1, thereby enabling the main fuel tank 1 and the sub fuel tank 2 to be sequentially filled with fuel introduced into the sub fuel tank 2 through the filler pipe 3, and to improve the smoothness of filling the sub fuel tank 2 with fuel by the filler pipe 3 while simplifying the structure of the fuel supply apparatus for an engine.

Example two

The present embodiment relates to an engine system including an engine, and a fuel supply apparatus for an engine as described in the first embodiment that supplies fuel to the engine. Meanwhile, the embodiment also relates to a vehicle, and the vehicle is provided with the engine system.

The engine system and the vehicle in the embodiment and the fuel supply device for an engine in the first embodiment have the same advantages as the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fuel supply device for an engine, comprising a main fuel tank (1) of the engine for a vehicle, and a sub-fuel tank (2) communicating with the main fuel tank (1), characterized by further comprising:

a filler pipe (3) communicating with the sub-tank (2) to introduce external fuel into the sub-tank (2);

the main fuel tank (1) and the auxiliary fuel tank (2) are always communicated, and the full filling liquid level of the auxiliary fuel tank (2) is higher than the full filling liquid level of the main fuel tank (1) so as to sequentially fill the main fuel tank (1) and the auxiliary fuel tank (2).

2. The fuel supply device for an engine according to claim 1, characterized in that: when the main fuel tank (1) is filled, the liquid level height of the fuel oil contained in the auxiliary fuel tank (2) is not more than 20% of the height of the cavity of the auxiliary fuel tank (2).

3. The fuel supply apparatus for an engine according to claim 2, characterized in that: the bottom surface of the cavity of the auxiliary fuel tank (2) is not lower than the top surface of the cavity of the main fuel tank (1); an oil pipe (4) which is communicated with the main fuel tank (1) and the auxiliary fuel tank (2) is arranged on the auxiliary fuel tank (2) close to the bottom of the auxiliary fuel tank (2).

4. The fuel supply apparatus for an engine according to claim 1, characterized in that: a vent pipe (5) is communicated between the main fuel tank (1) and the sub fuel tank (2).

5. The fuel supply device for an engine according to claim 1, characterized in that: and detection devices (6) for detecting the fuel height are respectively arranged in the main fuel tank (1) and the auxiliary fuel tank (2).

6. The fuel supply apparatus for an engine according to claim 5, characterized in that: the detection device (6) is a liquid level sensor.

7. The fuel supply apparatus for an engine according to claim 1, characterized by further comprising:

a canister (7) in which an active material is housed; between the canister (7) and the main and sub fuel tanks (1, 2), fuel vapor lines (8) are connected to guide fuel vapor from the main fuel tank (1) and fuel vapor from the sub fuel tank (2) into the canister (7), respectively.

8. The fuel supply device for an engine according to claim 7, characterized in that: the two fuel vapor pipelines (8) are respectively connected and arranged at the tops of the main fuel tank (1) and the auxiliary fuel tank (2).

9. An engine system, characterized in that: the system includes an engine, and a fuel supply apparatus for an engine according to any one of claims 1 to 8 that delivers fuel to the engine.

10. A vehicle, characterized in that: the vehicle is equipped with an engine system according to claim 9.

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