CN219600915U

CN219600915U - Auxiliary fuel tank for vehicle

Info

Publication number: CN219600915U
Application number: CN202320791022.9U
Authority: CN
Inventors: 尹立屹; 赵闯; 张金玲; 刘向民
Original assignee: Wuxi Yili Environmental Protection Technology Co Ltd; Hebei Yili Technology Co Ltd
Current assignee: Wuxi Yili Environmental Protection Technology Co Ltd; Hebei Yili Technology Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-08-29
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to a vehicle auxiliary fuel tank, which structurally comprises an auxiliary fuel tank body internally provided with a gear pump assembly, wherein the volume of the auxiliary fuel tank body is smaller than that of a vehicle main fuel tank, an oil suction port is arranged at the top of the auxiliary fuel tank body, the oil suction port is externally connected with an oil outlet of the vehicle main fuel tank through a pipeline, the oil suction port is connected with the top end of an oil suction pipe, the oil suction pipe extends downwards in the auxiliary fuel tank body, the bottom end of the oil suction pipe is communicated with a first inlet and a second inlet lower than the first inlet, the gear pump assembly is provided with a second inlet and a second outlet lower than the first inlet, the second inlet is communicated with the top end of an intermediate pipe, the intermediate pipe extends downwards in the auxiliary fuel tank body, the bottom end of the intermediate pipe is close to the bottom in the auxiliary fuel tank body, an oil delivery pipe is further arranged in the auxiliary fuel tank body, and the bottom end of the oil delivery pipe is close to the bottom in the auxiliary fuel tank body, and the top end of the oil delivery pipe is connected with a strainer inlet. The oil pipe can realize the active oil pumping of the engine fuel system, and the auxiliary fuel tank can realize the fuel oil supplement of the auxiliary fuel tank from the main fuel tank of the vehicle through the oil pipe and the middle pipe of the gear pump assembly.

Description

Auxiliary fuel tank for vehicle

Technical Field

The utility model relates to an auxiliary fuel tank for a vehicle.

Background

For the main fuel tank for the four-wheel vehicle, due to the large volume, when the liquid level is low, the conditions of bumping or long ascending and descending on the road surface, and the like, the condition that the oil suction port is separated from the liquid level of the fuel oil can occur, so that air is sent into an engine, and the continuous stability of oil supply is affected. It is considered to solve this problem to supply oil using a secondary tank having a small volume communicating with the main tank.

In the prior art, two fuel tanks are also arranged on a heavy vehicle, but the two fuel tanks are only used for reducing the refueling times or are convenient for fleet management (such as CN 204267196U), and the problem of insufficient continuous stability of fuel supply when the fuel tank has less fuel in fuel oil can not be solved.

Disclosure of Invention

The utility model provides an auxiliary fuel tank for a vehicle, which aims to overcome the defects in the prior art, and the auxiliary fuel tank is used for supplying fuel to an engine fuel system so as to ensure continuous and stable fuel supply when the fuel in the fuel tank is less.

The technical solution of the utility model is as follows: the utility model provides a vehicle auxiliary fuel tank, its structure includes the auxiliary fuel tank body that the gear pump assembly is equipped with inside, auxiliary fuel tank body volume is less than vehicle main fuel tank volume, auxiliary fuel tank body top is equipped with the oil suction port, the oil suction port passes through the external vehicle main fuel tank oil-out of pipeline, the oil suction port is connected and is inhaled oil pipe top, it is downthehole and the first import and export on the bottom intercommunication gear pump assembly to inhale oil pipe in auxiliary fuel tank body, be equipped with the second that is less than first import and export on the gear pump assembly, the second import and export intercommunication intermediate tube top, the intermediate tube downthehole extension of auxiliary fuel tank body and bottom are close to auxiliary fuel tank body internal bottom, still be equipped with in the auxiliary fuel tank body and send oil pipe, it is close to auxiliary fuel tank body internal bottom to send oil pipe bottom, the top is connected the strainer entry, the strainer export is through pipeline intercommunication engine fuel oil system, the gear pump assembly is equipped with the first passageway of import and export to the second. The oil pipe can realize the active oil pumping of the engine fuel system, and the auxiliary fuel tank can realize the fuel oil supplement of the auxiliary fuel tank from the main fuel tank of the vehicle through the oil pipe and the middle pipe of the gear pump assembly.

Preferably, the middle part of the oil delivery pipe is communicated with a third inlet and outlet on the gear pump assembly, and the gear pump assembly is provided with a second passage from the second inlet and outlet to the third inlet and outlet. The auxiliary fuel tank can actively feed oil to the fuel system of the engine through the intermediate pipe, the gear pump assembly and the oil feed pipe, and the special working condition is met.

Preferably, the first inlet and outlet is provided with a first one-way valve, the bottom end of the oil delivery pipe is provided with a second one-way valve, and the third inlet and outlet is provided with a pressure opening valve. Three mechanical valves can avoid the reverse flow of oil liquid and ensure the normal flow.

Preferably, in order to prevent excessive oil from being sent to the auxiliary fuel tank body by the main fuel tank of the vehicle, the top of the auxiliary fuel tank body is provided with a spillway opening, and the spillway opening is externally connected with the main fuel tank of the vehicle through the spillway.

Preferably, the original oil return is connected with the main fuel tank of the vehicle, and is connected with the auxiliary fuel tank instead, the auxiliary fuel tank body is provided with an oil return pipe, one end of the oil return pipe is communicated with the engine fuel system, and the other end of the oil return pipe extends into the auxiliary fuel tank body.

Preferably, the top of the auxiliary fuel tank body is provided with a fuel tank cover with a breather valve. The fuel filling and pressure balance can be ensured. The auxiliary fuel tank body is filled with fuel when leaving the factory, the transportation of the main fuel tank of the vehicle is not required to be waited, and the normal operation of the engine is not influenced.

Preferably, the bottom of the auxiliary fuel tank body is also provided with a tapping bolt. Can discharge waste oil when the auxiliary fuel tank needs to be cleaned, and is convenient to clean.

The utility model has the advantages that: the fuel supply device has reasonable structural design, supplies fuel to the engine fuel system through the smaller auxiliary fuel tank, supplements fuel to the auxiliary fuel tank through the original main fuel tank of the vehicle, can ensure continuous stability of fuel supply, reduces air to be sent into the engine, can actively supply fuel to the engine, and can cope with special working conditions.

Drawings

FIG. 1 is a schematic view of an embodiment of a vehicle auxiliary fuel tank according to the present utility model.

Fig. 2 is a cross-sectional view of fig. 1.

In the figure, 1 is a secondary fuel tank body, 11 is an oil suction port, 12 is an oil suction pipe, 121 is a first one-way valve, 13 is an intermediate pipe, 14 is an oil delivery pipe, 141 is a second one-way valve, 142 is a pressure opening valve, 15 is an overflow port, 16 is an oil return pipe, 17 is a fuel tank cover with a breather valve, 18 is a fuel drain bolt, 2 is a gear pump assembly, 21 is a first inlet and outlet, 22 is a second inlet and outlet, and 23 is a third inlet and outlet.

Detailed Description

The present utility model will be described in further detail with reference to examples and embodiments.

As shown in fig. 1 and 2, the auxiliary fuel tank for the vehicle structurally comprises an auxiliary fuel tank body 1 with a gear pump assembly 2 inside, wherein the volume of the auxiliary fuel tank body 1 is smaller than that of a main fuel tank of the vehicle, an oil suction port 11 is arranged at the top of the auxiliary fuel tank body 1, the oil suction port 11 is externally connected with an oil outlet of the main fuel tank of the vehicle through a pipeline, the oil suction port 11 is connected with the top end of an oil suction pipe 12, the oil suction pipe 12 extends downwards in the auxiliary fuel tank body 1 and the bottom end of the oil suction pipe 12 is communicated with a first inlet and outlet 21 on the gear pump assembly 2, a second inlet and outlet 22 lower than the first inlet and outlet 21 is arranged on the gear pump assembly 2, the second inlet and outlet 22 is communicated with the top end of an intermediate pipe 13, the intermediate pipe 13 extends downwards in the auxiliary fuel tank body 1 and the bottom end of the intermediate pipe is close to the inner bottom of the auxiliary fuel tank body 1, an oil delivery pipe 14 is further arranged in the auxiliary fuel tank body 1, the bottom end of the oil delivery pipe 14 is close to the inner bottom of the auxiliary fuel tank body 1, the top end of the auxiliary fuel tank body is connected with a coarse filter inlet, a coarse filter outlet is communicated with an engine fuel system through a pipeline, the middle of the oil delivery pipe 14 is communicated with a third inlet 23 on the gear pump assembly, the gear pump assembly is provided with a first inlet and outlet of the second inlet and outlet of the auxiliary fuel tank is communicated with a third inlet and outlet 23.

The first inlet and outlet 21 is provided with a first one-way valve 121, the bottom end of the oil feed pipe 14 is provided with a second one-way valve 141, and the third inlet and outlet 23 is provided with a pressure opening valve 142. All three valves are mechanical valves, and the opening and closing states of the valves are automatically switched by means of pressure.

In order to prevent excessive oil from being sent to the auxiliary fuel tank body 1 by the main fuel tank of the vehicle, the top of the auxiliary fuel tank body 1 is provided with a spillway 15, and the spillway 15 is externally connected with the main fuel tank of the vehicle through the spillway.

As a basic structure, because the oil supply amount is always larger than the amount required by the engine fuel system, there is oil return, and the oil return of the prior art is connected with the main fuel tank of the vehicle, while in the device, the auxiliary fuel tank body 1 is provided with an oil return pipe 16, one end of the oil return pipe 16 is communicated with the engine fuel system, and the other end of the oil return pipe extends into the auxiliary fuel tank body 1.

In order to meet the requirement that a part of fuel can be filled into the auxiliary fuel tank body 1 when leaving a factory without waiting for the transportation of a main fuel tank of a vehicle and without influencing the normal operation of an engine, the top of the auxiliary fuel tank body 1 is provided with a fuel tank cover 17 with a breather valve, so that the fuel can be filled and the pressure balance can be ensured.

The bottom of the auxiliary fuel tank body 1 is also provided with a tapping bolt 18, so that waste oil can be discharged when the auxiliary fuel tank needs to be cleaned, and the cleaning is convenient.

According to the above structure, in operation,

1) When the vehicle is running normally and the fuel in the auxiliary fuel tank body 1 is sufficient, the engine fuel system actively absorbs the fuel, and when the fuel does not need to be replenished from the main fuel tank of the vehicle, the gear pump assembly 2 does not work, the first one-way valve 121 is opened, the second one-way valve 141 and the pressure opening valve 142 are closed, and the fuel sequentially passes through the oil suction pipe 12 and the coarse filter and then is sent into the engine fuel system.

2) When the vehicle normally runs but the fuel in the auxiliary fuel tank body 1 is insufficient, on the basis of 1), the fuel is required to be supplemented from the main fuel tank of the vehicle, the gear pump assembly 2 rotates positively, the first inlet and outlet 21 and the second inlet and outlet 22 are opened, the second one-way valve 141 becomes open, the supplemented fuel is sent out from the main fuel tank of the vehicle, sequentially passes through the fuel feeding pipe 14, the second one-way valve 141, the gear pump assembly 2 and the middle pipe 13, and then enters the auxiliary fuel tank body 1 until the fuel is sufficient, and the working state is restored to 1).

3) When the vehicle is under special working conditions, such as when a new vehicle is started off line or the fuel system is maintained greatly, the auxiliary fuel tank body 1 is required to supply oil to the engine fuel system actively, the gear pump assembly 2 is reversed, the second inlet and outlet 22 and the third inlet and outlet 23 are opened, the first check valve 121 and the second check valve 141 are closed, the pressure opening valve 142 is opened, and the fuel sequentially passes through the intermediate pipe 13, the gear pump assembly 2, the pressure opening valve 142, the fuel suction pipe 12 and the strainer and then is fed into the engine fuel system.

The above components are all of the prior art, and any model and existing design that can achieve their corresponding functions can be used by those skilled in the art.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims

1. The utility model provides a vehicle auxiliary fuel tank, a serial communication port, including auxiliary fuel tank body (1) that is equipped with gear pump assembly (2) inside, auxiliary fuel tank body (1) volume is less than vehicle main fuel tank volume, auxiliary fuel tank body (1) top is equipped with oil suction port (11), oil suction port (11) pass through the external vehicle main fuel tank oil-out of pipeline, oil suction port (11) connect oil suction pipe (12) top, oil suction pipe (12) are at the first import and export (21) on auxiliary fuel tank body (1) downwardly extending and bottom intercommunication gear pump assembly (2), be equipped with second import and export (22) that are less than first import and export (21) on gear pump assembly (2), second import and export (22) intercommunication intermediate pipe (13) top, intermediate pipe (13) are at auxiliary fuel tank body (1) downwardly extending and bottom are close to auxiliary fuel tank body (1) interior bottom, still be equipped with in auxiliary fuel tank body (1) and send oil pipe (14), oil pipe (14) bottom is close to auxiliary fuel tank body (1) interior bottom, the top is connected the strainer entry, the strainer export is equipped with first access to the engine system through pipeline intercommunication gear pump assembly (2), gear pump assembly (2) is equipped with first access and export (22) to first passageway import and export.

2. A vehicle auxiliary fuel tank according to claim 1, wherein the central portion of the fuel feed pipe (14) is in communication with a third inlet (23) of the gear pump assembly (2), and the gear pump assembly (2) is provided with a second passage from the second inlet (22) to the third inlet (23).

3. A vehicle auxiliary fuel tank as claimed in claim 2, wherein the first inlet and outlet (21) is provided with a first check valve (121), the bottom end of the fuel delivery pipe (14) is provided with a second check valve (141), and the third inlet and outlet (23) is provided with a pressure opening valve (142).

4. A vehicle auxiliary fuel tank as claimed in any one of claims 1 to 3, wherein the top of the auxiliary fuel tank body (1) is provided with a spillway opening (15), and the spillway opening (15) is externally connected with the vehicle main fuel tank through the spillway opening.

5. A vehicle auxiliary fuel tank as claimed in any one of claims 1 to 3, characterised in that the auxiliary fuel tank body (1) is provided with a return line (16), one end of the return line (16) being connected to the engine fuel system and the other end extending into the auxiliary fuel tank body (1).

6. A vehicle auxiliary fuel tank as claimed in any one of claims 1 to 3, wherein the top of the auxiliary fuel tank body (1) is provided with a cap (17) with a breathing valve.

7. A vehicle auxiliary fuel tank as claimed in any one of claims 1 to 3, wherein the bottom of the auxiliary fuel tank body (1) is further provided with a tapping bolt (18).