Double-pump-core fuel pump assembly without oil storage barrel

Abstract

The utility model provides a double-pump-core fuel oil pump assembly without an oil storage barrel, which is characterized by comprising a double-oil-pump component, a double-pump-core fuel oil pump component, a double-pump-core fuel oil pump component and a double-pump-core fuel oil pump component, the injection pump is connected to the double-oil-pump assembly; the oil outlet pipeline assembly is connected to the double-oil-pump assembly; an upper cover is further connected to the double-oil-pump assembly, and an oil level sensor is further arranged on the double-oil-pump assembly. No oil storage barrel is arranged, oil is discharged through combination of the double oil pump assemblies, the fuel pressure is guaranteed, meanwhile, fuel in the auxiliary oil tank is siphoned and injected into the main oil tank through the injection pump, and the phenomenon of oil supply interruption is avoided.

Description

Technical Field

[0001] The utility model relates to a fuel pump assembly with double pump cores and no oil storage barrel. Background Art

[0002] Fuel pump is a professional term in the automotive parts industry. It is one of the basic components of the fuel injection system of electronic fuel injection vehicles and is located inside the vehicle's fuel tank. However, existing equipment has certain disadvantages when used. The conventional fuel pump assembly has an oil storage barrel, but when the oil in the oil storage barrel is scarce, the fuel system cannot supply fuel with a certain pressure to the engine when the engine is self-priming. At the same time, it is affected by pipeline sealing and flow resistance, which may cause low fuel pressure at the rear end of the engine, resulting in fuel supply interruption, affecting safety. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a double-pump-core fuel pump assembly without an oil storage tank. The fuel pump assembly has no oil storage tank and discharges oil through a combination of double oil pump components to ensure fuel pressure. At the same time, the fuel in the auxiliary fuel tank is siphoned and injected into the main fuel tank through the injection pump, and there will be no interruption in fuel supply.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a fuel pump assembly with double pump cores without oil storage tank, characterized in that it includes:

[0005] A double oil pump assembly, to which an upper cover is connected;

[0006] an injection pump connected to the dual oil pump assembly;

[0007] An oil outlet pipeline assembly connected to the dual oil pump assembly;

[0008] The double oil pump assembly is also connected with an upper cover, and the double oil pump assembly is also provided with an oil level sensor.

[0009] Furthermore, the dual oil pump assembly comprises:

[0010] An oil pump bracket having symmetrically arranged mounting positions;

[0011] an electric fuel pump, which has two and is respectively installed in the installation position;

[0012] A pump pad is provided under the electric fuel pump, an oil pump base is connected under the electric fuel pump, a filter is connected under the oil pump base, and two oil outlet ports and an injection port are provided on the oil pump bracket.

[0013] Furthermore, the oil outlet pipeline assembly comprises:

[0014] The oil outlet bellows have two ends, one of which is connected to a PPRV valve. One end of the two oil outlet bellows is connected to the oil outlet port, and the other ends of the two oil outlet bellows are connected through a three-way joint and connected upward to the upper cover.

[0015] Furthermore, the jet pump and the jet port are connected via a jet bellows.

[0016] Furthermore, a mounting plate is provided on the oil pump bracket, and the oil level sensor is mounted on the mounting plate.

[0017] Furthermore, the PPRV valve is connected to an internal circulation oil pipe.

[0018] Furthermore, a wire plug is provided on the upper cover and is connected to the electric fuel pump.

[0019] Compared with the prior art, the advantages of the present application are: it does not have an oil storage tank, and oil is discharged through a dual oil pump assembly to ensure fuel pressure. At the same time, the fuel in the auxiliary fuel tank is siphoned and sprayed into the main fuel tank through the injection pump, and there will be no interruption in fuel supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a fuel pump schematic;

[0021] Figure 2 This is a schematic diagram of the fuel pump from another perspective;

[0022] Figure 3 It is a schematic diagram of the explosion of the dual oil pump assembly;

[0023] In the figure, 1. upper cover; 11. wire plug; 21. three-way connector; 22. oil outlet bellows; 23. PPRV valve; 24. internal circulation oil pipe; 3. injection pump; 31. injection bellows; 4. oil level sensor; 51. oil pump bracket; 511. oil outlet port; 512. mounting plate; 513. injection port; 52. electric fuel pump; 53. pump pad; 54. oil pump base; 55. filter. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0025] like Figure 1-3 As shown, a fuel pump assembly with double pump cores without an oil storage tank is characterized in that it includes:

[0026] A double oil pump assembly, to which an upper cover 1 is connected;

[0027] A jet pump 3 connected to the dual oil pump assembly;

[0028] An oil outlet pipeline assembly connected to the dual oil pump assembly;

[0029] The double oil pump assembly is also connected to an upper cover 1, and the double oil pump assembly is also provided with an oil level sensor 4. The oil level sensor 4 senses the oil position.

[0030] The oil outlet port 511 and the injection port 513 of the oil pump bracket 51 are located on the same pipeline, so as to realize fuel recycling and continuous fuel supply.

[0031] A check valve is provided on the injection pump 3 to prevent the fuel from flowing back when the assembly stops working.

[0032] Furthermore, the dual oil pump assembly comprises:

[0033] The oil pump bracket 51 has symmetrically arranged mounting positions;

[0034] The electric fuel pump 52 has two and is installed in the installation position respectively;

[0035] A pump pad 53 is provided below the electric fuel pump 52, and an oil pump base 54 is also connected below the electric fuel pump 52. A filter screen 55 is connected below the oil pump base 54. Two oil outlet ports 511 and an injection port 513 are provided on the oil pump bracket 51. The oil outlet port 511 is used for the oil outlet of the electric fuel pump 52 to keep the engine working, and the injection port 513 keeps the fuel in the main fuel tank sufficient.

[0036] Furthermore, the oil outlet pipeline assembly comprises:

[0037] The two oil outlet bellows 22 are provided with a PPRV valve 23 connected to one of the oil outlet bellows 22 . One end of the two oil outlet bellows 22 is connected to the oil outlet port 511 , and the other ends of the two oil outlet bellows 22 are connected through a three-way joint 21 and connected upward to the upper cover 1 .

[0038] Furthermore, the jet pump 3 is connected to the jet port 513 via a jet bellows 31 .

[0039] Furthermore, a mounting plate 512 is provided on the oil pump bracket 51 , and the oil level sensor 4 is mounted on the mounting plate 512 .

[0040] Furthermore, the PPRV valve 23 is connected with an internal circulation oil pipe 24. The internal circulation oil pipe 24 is used to realize internal circulation of the oil circuit.

[0041] Furthermore, a wire plug 11 is provided on the upper cover 1 and is connected to the electric fuel pump 52 .

[0042] The utility model mainly filters and absorbs the fuel through the filter screen 55 and transmits it upward. The oil output of the electric fuel pump 52 is respectively transmitted to the two oil outlet bellows 22 to the upper cover 1 through the oil outlet port 511. The double pumps work simultaneously to supply oil to the engine. There is a PPRV valve 23 on it to realize the internal circulation back to the internal oil circuit. The injection port 513 of the oil pump bracket 51 is connected to the driving injection pump 3 through the injection bellows 31 to siphon the fuel of the auxiliary tank to the main tank to ensure the supply of oil. The double pumps supply oil to ensure the fuel pressure. The injection pump 3 continuously siphons the oil from the auxiliary tank to prevent the interruption of oil supply.

[0043] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.

[0044] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A fuel pump assembly with double pump cores without oil storage tank, characterized in that: It includes: A double oil pump assembly, to which an upper cover is connected; an injection pump connected to the dual oil pump assembly; An oil outlet pipeline assembly connected to the dual oil pump assembly; The double oil pump assembly is also connected with an upper cover, and the double oil pump assembly is also provided with an oil level sensor.

2. The fuel pump assembly without oil storage tank and double pump core according to claim 1 is characterized in that: The dual oil pump assembly comprises: An oil pump bracket having symmetrically arranged mounting positions; an electric fuel pump, which has two and is respectively installed in the installation position; A pump pad is provided under the electric fuel pump, an oil pump base is connected under the electric fuel pump, a filter is connected under the oil pump base, and two oil outlet ports and an injection port are provided on the oil pump bracket.

3. The fuel pump assembly without oil storage tank and double pump core according to claim 2 is characterized in that: The oil outlet pipeline assembly comprises: The oil outlet bellows have two ends, one of which is connected to a PPRV valve. One end of the two oil outlet bellows is connected to the oil outlet port, and the other ends of the two oil outlet bellows are connected through a three-way joint and connected upward to the upper cover.

4. The fuel pump assembly without oil storage tank and double pump core according to claim 2 is characterized in that: The jet pump is connected to the jet port via a jet bellows.

5. The dual-pump fuel pump assembly without an oil tank according to claim 2, characterized in that: The oil pump bracket is provided with a mounting plate, and the oil level sensor is mounted on the mounting plate.

6. The dual-pump fuel pump assembly without oil storage tank according to claim 3 is characterized in that: The PPRV valve is connected with an internal circulation oil pipe.

7. The dual-pump fuel pump assembly without an oil tank according to claim 2, characterized in that: The upper cover is provided with a wire plug which is connected with the electric fuel pump.

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