CN114909242B

CN114909242B - Oil supply system

Info

Publication number: CN114909242B
Application number: CN202210716883.0A
Authority: CN
Inventors: 乐兴均; 孙国庆; 施胡滨; 徐勇; 王力
Original assignee: Dongfeng Off Road Vehicle Co Ltd
Current assignee: Dongfeng Off Road Vehicle Co Ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2023-08-22
Anticipated expiration: 2042-06-23
Also published as: CN114909242A

Abstract

The application relates to an oil supply system, which comprises a switching valve, a main oil tank, at least one auxiliary oil tank, a vehicle-mounted oil tank and an oil transfer pump, wherein the switching valve is provided with a plurality of joints, each joint comprises a main joint communicated with the main oil tank, a plurality of auxiliary joints communicated with the auxiliary oil tank in a one-to-one correspondence manner and an outer joint used for communicating with external oil utilization equipment, the switching valve can respectively control the opening or closing of the main joint and each auxiliary joint, the main oil tank, the auxiliary oil tank and the vehicle-mounted oil tank are respectively provided with a fuel filling port, the vehicle-mounted oil tank is communicated with the main oil tank through the oil transfer pump, and the oil transfer pump is used for supplementing fuel in the vehicle-mounted oil tank into the main oil tank. The main oil tank and the auxiliary oil tank of the oil supply system are not communicated with each other but are connected with the switching valve, so that the oil supply system can supply oil to the single oil tank respectively, can supply oil to external equipment simultaneously, and can supply fuel oil to the main oil tank independently through the vehicle-mounted oil tank to play a role in emergency oil supply.

Description

Oil supply system

Technical Field

The application relates to the technical field of automobile parts, in particular to an oil supply system.

Background

Off-road fleets typically carry a large number of electrical equipment while the operating environment is free of stationary power stations, so on-board mobile power stations become an indispensable piece of equipment in fleets. Conventional on-board mobile power stations typically carry a single diesel generator set with which a vehicle fuel supply system is integrated. And as the number of electric equipment increases and the power demand increases, the generator set increases so as to meet the power demand. The fuel consumption is increased in equal proportion under the rated working condition while the generated energy is increased, and the vehicle fuel supply system is required to have larger capacity, and the prior art adopts a solution of connecting a main fuel tank and an auxiliary fuel tank in series.

For example, the patent with publication number CN208216487U discloses a dual-oil-tank oil supply system for a heavy-duty car, which realizes the series connection of main and auxiliary oil tanks through a bottom added pipeline. Essentially, the main oil tank and the auxiliary oil tank are integrated, independent oil supply cannot be realized, and unidirectional oil supplementing cannot be realized.

Disclosure of Invention

In view of the above, it is necessary to provide an oil supply system for solving the technical problems that the main and auxiliary oil tanks connected in series in the prior art are essentially integrated, and can not realize separate oil supply and one-way oil supplement.

The present application provides an oil supply system, comprising: the switching valve is provided with a plurality of joints, each joint comprises a main joint communicated with the main oil tank, a plurality of auxiliary joints communicated with the auxiliary oil tank in one-to-one correspondence and an outer joint used for communicating external oil utilization equipment, the switching valve can respectively control the opening or closing of the main joint and each auxiliary joint, the main oil tank, the auxiliary oil tank and the vehicle-mounted oil tank are all provided with fuel filling ports, the vehicle-mounted oil tank is communicated with the main oil tank through the oil transfer pump, and the oil transfer pump is used for supplying fuel in the vehicle-mounted oil tank to the main oil tank.

Further, the switching valve is internally provided with an oil inlet flow passage and an oil return flow passage which are isolated from each other, and each joint is respectively provided with an oil inlet port communicated with the oil inlet flow passage and an oil return port communicated with the oil return flow passage.

Further, the main oil tank is communicated with an oil inlet port positioned on the main joint through the main oil inlet pipe, and is communicated with an oil return port positioned on the main joint through the main oil return pipe.

Further, the auxiliary oil inlet pipes and auxiliary oil return pipes are in one-to-one correspondence with the auxiliary oil tanks, each auxiliary oil tank is communicated with an oil inlet port positioned on one auxiliary joint through the auxiliary oil inlet pipe, and each auxiliary oil tank is communicated with an oil return port positioned on the same auxiliary joint through the auxiliary oil return pipe.

Further, the device also comprises an outer oil inlet pipe and an outer oil return pipe, wherein an oil inlet port on the outer joint is communicated with external oil equipment through the outer oil inlet pipe, and an oil return port on the outer joint is communicated with the external oil equipment through the outer oil return pipe.

Further, the device also comprises a one-way valve unit, wherein the one-way valve unit comprises an oil inlet one-way valve and an oil return one-way valve, the oil inlet one-way valve is arranged on the outer oil inlet pipe so that fuel flows from the switching valve to the external oil utilization equipment in a one-way, and the oil return one-way valve is arranged on the outer oil return pipe so that fuel flows from the external oil utilization equipment to the switching valve in a one-way.

Further, the oil inlet check valve is provided with an oil inlet and at least one oil inlet outlet, the oil inlet is communicated with the outer oil inlet pipe, and the oil inlet outlet is communicated with external oil equipment in a one-to-one correspondence manner.

Further, the oil return check valve is provided with an oil return outlet and at least one oil return inlet, the oil return outlet is communicated with the outer oil return pipe, and the oil return inlet is correspondingly communicated with external oil utilization equipment one by one.

Further, the one-way valve unit further comprises electromagnetic valve bodies which are arranged in one-to-one correspondence with the oil inlet outlet and the oil return outlet, and the electromagnetic valve bodies are used for controlling the opening or closing of the oil inlet outlet and the oil return outlet.

Further, the auxiliary oil tank is symmetrically arranged with the vehicle-mounted oil tank.

Compared with the prior art, the main oil tank and the auxiliary oil tank of the oil supply system are not communicated with each other but are connected with the switching valve, so that the oil can be supplied to the single oil tank respectively, the external equipment can be supplied with oil at the same time, and the main oil tank can be supplied with fuel oil independently through the vehicle-mounted oil tank, thereby playing a role in emergency oil supply.

The foregoing description is only an overview of the present application, and is intended to provide a better understanding of the present application, as it is embodied in the following description, with reference to the preferred embodiments of the present application and its details set forth in the accompanying drawings. Specific embodiments of the present application are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic layout view of an embodiment of an oil supply system according to the present application;

FIG. 2 is a cross-sectional view of the oil intake check valve of FIG. 1;

fig. 3 is a cross-sectional view of the oil return check valve of fig. 1.

Detailed Description

The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.

Referring to fig. 1, the present application provides an oil supply system that can be used in a special vehicle for supplying oil to an on-board oil device such as a fuel generator.

In some embodiments, the present application provides an oil supply system including a vehicle-mounted oil tank 1, a main oil tank 2, at least one auxiliary oil tank 3, an oil delivery pump 4, and a switching valve 5, the main oil tank 2 and the auxiliary oil tank 3 not communicating with each other. The vehicle-mounted oil tank 1, the main oil tank 2 and the auxiliary oil tank 3 are all provided with fuel filling ports, and the fuel filling ports are sealed and closed through common oil tank sealing covers. After the sealing cover of the oil tank is taken down, the fuel oil can be respectively filled into each oil tank through the fuel oil filling opening. The vehicle-mounted oil tank 1 is communicated with the main oil tank 2 through the oil transfer pump 4, and the oil transfer pump 4 can supplement the fuel in the vehicle-mounted oil tank 1 into the main oil tank 2. The switching valve 5 has a plurality of joints including a main joint 51 communicating with the main tank 2, a plurality of sub-joints 52 communicating with the sub-tanks 3 in one-to-one correspondence, and an outer joint 53 for communicating with the external oil apparatus 10, and the switching valve 5 can control the opening or closing of the main joint 51 and each sub-joint 52, respectively.

The oil supply system provided by the application enables the main oil tank 2 and the auxiliary oil tank 3 not to be communicated with each other by connecting the main oil tank 2 and the auxiliary oil tank 3 in parallel, so that the oil supply system can be used for independently supplying oil to the external oil utilization equipment 10 or simultaneously supplying oil to the external equipment. And the main oil tank 2 can be supplemented with fuel oil independently through the vehicle-mounted oil tank 1, so that an emergency oil supplementing effect is realized during working.

In the present embodiment, one sub tank 3 is provided, and in other embodiments, a plurality of sub tanks 3 may be provided according to actual oil demand and vehicle layout restrictions, and a switch valve 5 having a corresponding number of sub-joints 52 is selected to connect each sub tank 3. The connection and the working principle of the plurality of auxiliary tanks 3 are similar to those of the single auxiliary tank 3, and the technical scheme of the application is described in the embodiment of the single auxiliary tank 3.

The vehicle-mounted oil tank 1 is a self-contained oil tank of a vehicle where the oil supply system is located, namely, the main function of the vehicle-mounted oil tank 1 is to be connected with a vehicle power system and provide fuel for running of an automobile. Typically, the vehicle-mounted fuel tank is located on one of the left and right sides of the vehicle.

In the present embodiment, the main tank 2 is generally large in volume, and is disposed between the left and right side members at the rear of the rear axle of the vehicle, with the arrangement at the intermediate position being advantageous for balancing the weight of the left and right sides of the vehicle. The auxiliary fuel tank 3 is symmetrically arranged on the other side of the vehicle relative to the vehicle-mounted fuel tank 1 by the central axis of the vehicle, and is also beneficial to balancing the weight of the left side and the right side of the vehicle.

In some embodiments, a plurality of auxiliary fuel tanks 3 are arranged, the auxiliary fuel tanks 3 are generally smaller in volume than the main fuel tank 2, and can be flexibly arranged at idle space of the vehicle chassis according to requirements, so that the space utilization efficiency of the vehicle chassis is improved. When other functional devices need to be installed, the corresponding auxiliary fuel tanks 3 may also be removed to make room for installation.

It is easy to understand that the vehicle-mounted oil tank 1, the main oil tank 2 and the sub-oil tank 3 are each independently provided with an oil quantity sensor for monitoring the oil quantity in each oil tank, respectively. These fuel level sensors may be used directly with sensors on existing vehicles for monitoring the fuel level in the fuel tank.

The oil transfer pump 4 is communicated with the vehicle-mounted oil tank 1 and the main oil tank 2 through pipelines, and the fuel in the vehicle-mounted oil tank 1 can be transferred into the main oil tank 2 to serve as emergency supplement through controlling the oil transfer pump 4. It is easy to understand that, during actual use, the fuel in the vehicle-mounted fuel tank 1 is used for vehicle running, and the fuel in the main fuel tank 2 and the auxiliary fuel tank 3 is used for the external fuel apparatus 10. When the fuel in the main fuel tank 2 and the auxiliary fuel tank 3 is insufficient, the fuel pump 4 can be manually controlled to convey the fuel in the vehicle-mounted fuel tank 1 into the main fuel tank 2 for the external fuel utilization device 10. It is obvious that at least enough fuel needs to be kept in the vehicle-mounted fuel tank 1 to drive the vehicle to the fueling place so as to avoid the vehicle from being anchored due to fuel exhaustion.

The switching valve 5 has a plurality of joints including a main joint 51 communicating with the main tank 2, a plurality of sub-joints 52 communicating with the sub-tanks 3 in one-to-one correspondence, and an outer joint 53 for communicating with the external oil apparatus 10, and the switching valve 5 can control the opening or closing of the main joint 51 and each sub-joint 52, respectively. Thereby controlling the main tank 2 and the sub-tank 3 to supply oil individually or together.

In some embodiments, the tank is supplied with excessive fuel to the external fuel utilization device 10, and the excessive fuel is re-delivered into the fuel return tank, so that the switching valve 5 is provided with an oil inlet channel and an oil return channel isolated from each other, and each joint is respectively provided with an oil inlet port communicated with the oil inlet channel and an oil return port communicated with the oil return channel.

The main tank 2 communicates with an inlet port located at the main joint 51 through a main inlet pipe 61 for delivering fuel. The main tank 2 is also connected to a return port on the main connection 51 via a main return pipe 62 for receiving fuel.

Similarly, each auxiliary oil tank 3 is connected with an auxiliary oil inlet pipe 63 and an auxiliary oil return pipe 64, and is communicated with an oil inlet port on a corresponding auxiliary joint 52 through the auxiliary oil inlet pipe 63, and is communicated with an oil return port on the same auxiliary joint 52 through the auxiliary oil return pipe 64.

Similarly, the oil inlet port on the outer joint 53 communicates with the external oil apparatus 10 through the outer oil inlet pipe 65, and the oil return port on the outer joint 53 communicates with the external oil apparatus 10 through the outer oil return pipe 66.

Thus, the fuel in the main tank 2 flows into the switching valve 5 through the main fuel inlet pipe 61 and flows into the external fuel device 10 through the external fuel inlet pipe 65, and is supplied to the external fuel device 10. And the excessive fuel flows back into the switching valve 5 through the outer return pipe 66 and then flows back into the main tank 2 through the main return pipe 62. Similarly, the fuel in the auxiliary fuel tank 3 flows into the switching valve 5 through the auxiliary fuel inlet pipe 63 and then flows into the external fuel apparatus 10 through the external fuel inlet pipe 65 for use by the external fuel apparatus 10. And the excessive fuel flows back into the switching valve 5 through the outer return pipe 66 and then flows back into the auxiliary fuel tank 3 through the auxiliary return pipe 64. The two processes can be performed separately or simultaneously.

In some embodiments, to limit the flow direction of the fuel, a check valve unit 7 is further provided, where the check valve unit 7 includes an oil inlet check valve 71 and an oil return check valve 72, and the oil inlet check valve 71 and the oil return check valve 72 may be designed separately or as an integrated unit. An oil intake check valve 71 is provided to the outer oil intake pipe 65 to make the fuel flow from the switching valve 5 to the external oil usage device 10 in one direction, and an oil return check valve 72 is provided to the outer oil return pipe 66 to make the fuel flow from the external oil usage device 10 to the switching valve 5 in one direction.

In some embodiments, a plurality of external fuel consuming devices 10, such as two sets of fuel generators, may be provided on the vehicle. The oil feed check valve 71 thus has an oil feed inlet 711 and at least one oil feed outlet 712. The oil inlet 711 communicates with the outer oil inlet pipe 65, and the oil outlet 712 communicates with the outer oil usage apparatus 10 in one-to-one correspondence. Similarly, the return check valve 72 has a return outlet 721 and at least one return inlet 722, the return outlet 721 communicating with the outer return conduit 66, the return inlet 722 communicating with the external oil utility 10 in a one-to-one correspondence.

A solenoid valve 73 is provided on each of the oil inlet port 712 and the oil return port 721 for controlling the opening and closing of each of the oil inlet port 712 and the oil return port 721, respectively. Each solenoid valve 73 includes a valve element 731, an electromagnet 732, and a spring 733, wherein one end of the valve element 731 abuts against the spring 733, and the other end is used for closing the oil inlet 712 or the oil return 721 under the action of the spring force 733. When the electromagnet 732 is energized, a magnetic force is generated to attract the valve element 731 to move in the direction of the compression spring 733, and the oil inlet 712 or the oil return 721 is opened.

The fuel supply system is used for respectively filling sufficient fuel through fuel filling ports on the vehicle-mounted fuel tank 1, the main fuel tank 2 and the auxiliary fuel tank 3. The fuel in the vehicle-mounted fuel tank 1 is used for running of the vehicle, and the fuel in the main fuel tank 2 and the auxiliary fuel tank 3 is used for use of the external fuel apparatus 10. In operation of the external fuel consumer 10, the fuel in the secondary tank 3 is preferably used first, i.e. the control switch 5 closes the inlet and outlet connections on the main connection 51. When the fuel in the auxiliary fuel tank 3 is exhausted, the fuel inlet port and the fuel return port on the main joint 51 are opened, and the fuel inlet port and the fuel return port on the auxiliary joint 52 are closed. When the fuel in the main fuel tank 2 is also exhausted quickly, if the fuel is not needed much and the vehicle is not far away from the refueling place, namely, after enough fuel which is enough to travel to the refueling place is reserved in the vehicle-mounted fuel tank 1, the redundant fuel is enough for the external fuel utilization device 10, and the fuel pump 4 can be controlled to convey a proper amount of fuel in the vehicle-mounted fuel tank 1 into the main fuel tank 2 for the external fuel utilization device 10.

The main oil tank and the auxiliary oil tank of the oil supply system are not communicated with each other but are connected with the switching valve, so that the oil supply system can supply oil to the single oil tank respectively, can supply oil to external equipment simultaneously, and can supply fuel oil to the main oil tank independently through the vehicle-mounted oil tank to play a role in emergency oil supply.

The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application.

Claims

1. An oil supply system, characterized in that it comprises: the switching valve can respectively control the opening or closing of the main joint and each auxiliary joint, the main oil tank, the auxiliary oil tank and the vehicle-mounted oil tank are all provided with fuel filling ports, the vehicle-mounted oil tank is communicated with the main oil tank through the oil transfer pump, and the oil transfer pump is used for supplying fuel in the vehicle-mounted oil tank to the main oil tank; the switching valve is internally provided with an oil inlet flow passage and an oil return flow passage which are isolated from each other, and each joint is respectively provided with an oil inlet port communicated with the oil inlet flow passage and an oil return port communicated with the oil return flow passage.

2. The oil supply system of claim 1, further comprising a main oil inlet pipe and a main oil return pipe, wherein the main oil tank is communicated with an oil inlet port on the main joint through the main oil inlet pipe, and wherein the main oil tank is communicated with an oil return port on the main joint through the main oil return pipe.

3. The oil supply system according to claim 1, further comprising a plurality of auxiliary oil inlet pipes and auxiliary oil return pipes which are in one-to-one correspondence with the auxiliary oil tanks, wherein each auxiliary oil tank is communicated with an oil inlet port positioned on one of the auxiliary joints through the auxiliary oil inlet pipe, and each auxiliary oil tank is communicated with an oil return port positioned on the same auxiliary joint through the auxiliary oil return pipe.

4. The oil supply system of claim 1, further comprising an outer oil inlet pipe and an outer oil return pipe, wherein an oil inlet port on the outer joint is communicated with an external oil device through the outer oil inlet pipe, and an oil return port on the outer joint is communicated with the external oil device through the outer oil return pipe.

5. The fuel supply system of claim 4, further comprising a check valve unit including an inlet check valve provided to the outer inlet pipe to allow the fuel to flow unidirectionally from the switching valve to the external fuel device, and an return check valve provided to the outer return pipe to allow the fuel to flow unidirectionally from the external fuel device to the switching valve.

6. The oil supply system of claim 5, wherein the oil inlet check valve has an oil inlet and at least one oil inlet, the oil inlet communicates with the outer oil inlet pipe, and the oil inlet communicates with the external oil application device in a one-to-one correspondence.

7. The oil supply system of claim 6, wherein the oil return check valve has an oil return outlet and at least one oil return inlet, the oil return outlet being in communication with the outer oil return pipe, the oil return inlet being in one-to-one communication with an external oil utility.

8. The oil supply system according to claim 7, wherein the check valve unit further includes solenoid valves arranged in one-to-one correspondence with the oil inlet outlet and the oil return outlet, the solenoid valves being provided to control opening or closing of the oil inlet outlet and the oil return outlet.

9. The fuel supply system according to claim 1, comprising said auxiliary fuel tank arranged symmetrically to said vehicle-mounted fuel tank.