Inclined horizontal type fuel pump assembly

Abstract

The utility model provides an inclined horizontal type fuel pump assembly which is characterized by comprising a bottom shell, an upper cover of the bottom shell is provided with an inner support, the inner support is provided with a triangular connecting frame, and the bottom shell is provided with an oil outlet nozzle; the lower end of the upper cover is clamped and fixed with the upper end of the triangular connecting frame; the oil pump is mounted in the bottom shell, and an oil outlet corrugated pipe is connected to the oil pump; the upper end of the three-way connector is connected with the lower end of the oil outlet nozzle, and the oil outlet corrugated pipe is connected with the lower end of the three-way connector; a port of the side face of the three-way connector is connected with an oil return corrugated pipe, a siphon connector is arranged on the inner support, the oil return corrugated pipe is connected with the siphon connector, the lower end of the siphon connector extends into the bottom shell, and the side face of the siphon connector is connected with an auxiliary oil tank suction pipe. The oil pump sucks oil and sprays the oil upwards, meanwhile, the siphon pipeline siphons oil in the auxiliary oil tank into the oil storage barrel to be absorbed by the oil pump, the oil in the oil storage barrel can be kept sufficient, and flameout caused by oil cut-off can be avoided.

Description

Technical Field

[0001] The utility model relates to an inclined horizontal fuel pump assembly. Background Art

[0002] A fuel pump is a professional term in the automotive parts industry. It is one of the basic components of an electronic fuel injection system for automobiles and is located inside the vehicle fuel tank. The fuel pump works when the engine starts and runs. If the engine stops while the ignition switch is still in the ON position, the HFM - SFI control module shuts off the power supply of the fuel pump to avoid accidental ignition.

[0003] The existing fuel pump installation structure is that the flange is fixed to the fuel tank opening, the oil storage barrel is placed at the bottom of the fuel tank, and the flange and the oil storage barrel are connected by support rods. The pump core is vertically installed in the oil storage barrel bracket; its oil circuit is that the fuel pump assembly is installed on the fuel tank. After the oil in the fuel tank is preliminarily filtered by the fuel pump coarse filter, it is stored in the oil storage barrel. When the pump core works, it flows into the engine fuel pipe through the corrugated pipe and the flange outlet pipe. The excess oil will return to the fuel tank through the return pipe. Most of the way it sends the oil from the fuel tank to the oil storage barrel is to suck it in through the oil inlet of the bottom shell. If it is on a large vehicle, the fuel tank is relatively large and the oil level is low. In places with slopes or inclinations, the pump body may not be able to suck oil, resulting in the engine stalling due to lack of oil. Summary of the Utility Model

[0004] The purpose of the present utility model is to address the above problems existing in the prior art and propose an inclined horizontal fuel pump assembly. It sucks oil upward through the oil pump and at the same time sets up a siphon pipeline to siphon the oil in the auxiliary fuel tank into the oil storage barrel for the oil pump to absorb, which can keep the oil in the oil storage barrel sufficient and prevent fuel cut - off and engine stalling.

[0005] The purpose of the present utility model can be achieved by the following technical solutions: An inclined horizontal fuel pump assembly, characterized in that it includes:

[0006] A bottom shell, on which an inner support is provided, the inner support has a triangular connection frame, and an oil outlet nozzle is provided on the bottom shell;

[0007] An upper cover, the lower end of which is clamped and fixed to the upper end of the triangular connection frame;

[0008] An oil pump, which is installed in the bottom shell and an oil outlet corrugated pipe is connected to the oil pump;

[0009] A three - way joint, the upper end of which is connected to the lower end of the oil outlet nozzle, and the oil outlet corrugated pipe is connected to the lower end of the three - way joint;

[0010] The port on the side of the three-way joint is connected to an oil return bellows. A siphon joint is provided on the inner bracket. The oil return bellows is connected to the siphon joint. The lower end of the siphon joint extends into the bottom case. A sub-tank suction pipe is connected to the side of the siphon joint.

[0011] Further, a pressure relief channel is provided at the lower end of the upper cover. The pressure relief channel is communicated with the oil outlet nozzle through a connecting through hole.

[0012] Further, a regulating valve is connected to the pressure relief channel. The outlet end of the regulating valve is connected to a pressure relief oil outlet pipe.

[0013] Further, a connecting portion for connecting to the triangular connecting frame is provided at the lower end of the upper cover. Clamping holes are provided at both ends of the connecting portion. The two ends of the triangular connecting frame have clamping heads. The clamping heads are inserted into the clamping holes to connect the triangular connecting frame to the upper cover.

[0014] Further, a filter screen is provided at the lower end of the oil pump.

[0015] Further, an oil inlet is provided at the bottom inside the bottom case. A check valve is provided at the oil inlet.

[0016] Further, an oil level sensor is connected to the outside of the bottom case.

[0017] Further, one end of the siphon joint is connected to the oil return bellows and the other end faces downward and is located inside the bottom case. A suction port for connecting to the sub-tank suction pipe is also provided on the siphon joint. An injection nozzle is provided inside the siphon joint. The lower end of the sub-tank suction pipe is horizontally abutted against the bottom surface of the external fuel tank.

[0018] Further, a sealing ring is provided at the edge of the upper cover.

[0019] Compared with the prior art, the advantages of this application are as follows: It sucks oil through the oil pump and sprays it upward. At the same time, a siphon pipeline is set to siphon the oil in the sub-tank into the oil storage barrel for the oil pump to absorb, which can keep the oil in the oil storage barrel sufficient and prevent fuel cut-off and flameout. Description of the Drawings

[0020] Figure 1 is a schematic diagram of an inclined horizontal fuel pump;

[0021] Figure 2 is a schematic diagram of another view of the fuel pump;

[0022] Figure 3 is a cross-sectional view of the pressure relief channel;

[0023] Figure 4 is a schematic diagram of the separation of the bottom case;

[0024] Figure 5 is a cross-sectional view of the siphon joint;

[0025] Figure 6 It is a schematic diagram of the check valve inside the bottom shell;

[0026] Figure 7 It is a schematic diagram of the oil outlet channel of the oil pump;

[0027] In the figure, 1 is the oil outlet nozzle; 2 is the upper cover; 21 is the sealing ring; 22 is the pressure relief channel; 23 is the connecting through hole; 24 is the connecting part; 241 is the clamping hole; 3 is the regulating valve; 31 is the pressure relief oil outlet pipe; 4 is the siphon joint; 41 is the oil return bellows; 42 is the fuel injection nozzle; 5 is the tee joint; 6 is the inner support; 61 is the triangular connecting frame; 611 is the clamping head; 7 is the bottom shell; 71 is the oil pump; 72 is the filter screen; 73 is the check valve; 74 is the oil outlet bellows; 8 is the sub-tank suction pipe; 9 is the oil level sensor. Specific implementation mode

[0028] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described.

[0029] As Figure 1-7 shown, an inclined horizontal fuel pump assembly, characterized in that it includes:

[0030] The bottom shell 7, the upper cover 2 thereof is provided with an inner support 6, the inner support 6 has a triangular connecting frame 61, and the bottom shell 7 is provided with an oil outlet nozzle 1;

[0031] The upper cover 2, the lower end thereof is clamped and fixed to the upper end of the triangular connecting frame 61;

[0032] The oil pump 71, which is installed inside the bottom shell 7 and an oil outlet bellows 74 is connected to the oil pump 71;

[0033] The tee joint 5, the upper end thereof is connected to the lower end of the oil outlet nozzle 1, and the oil outlet bellows 74 is connected to the lower end of the tee joint 5;

[0034] The port on the side of the tee joint 5 is connected with an oil return bellows 41, the inner support 6 is provided with a siphon joint 4, the oil return bellows 41 is connected with the siphon joint 4, the lower end of the siphon joint 4 extends into the bottom shell 7, and the side of the siphon joint 4 is connected with a sub-tank suction pipe 8.

[0035] Furthermore, the lower end of the upper cover 2 is provided with a pressure relief channel 22, and the pressure relief channel 22 is communicated with the oil outlet nozzle 1 through a connecting through hole 23.

[0036] Furthermore, a regulating valve 3 is connected to the pressure relief channel 22, and the outlet end of the regulating valve 3 is connected with a pressure relief oil outlet pipe 31. In the above structure, the oil outlet nozzle 1 is communicated with the pressure relief channel 22 through the connecting through hole 23, the oil pressure in the whole oil outlet channel is adjusted by the regulating valve 3, and then the oil for pressure relief is discharged through the pressure relief oil outlet pipe 31.

[0037] Furthermore, a connecting portion 24 connected to the triangular connecting frame 61 is provided at the lower end of the upper cover 2. Clamping holes 241 are formed at both ends of the connecting portion 24. Clamping heads 611 are provided at both ends of the triangular connecting frame 61. The clamping heads 611 are inserted into the clamping holes 241 to connect the triangular connecting frame 61 with the upper cover 2. The upper cover 2 and the inner support 6 are connected by the structure of the clamping heads 611 and the clamping holes 241.

[0038] Furthermore, a filter screen 72 is provided at the lower end of the oil pump 71. It sucks and filters the oil fluid.

[0039] Furthermore, an oil inlet is provided at the inner bottom of the bottom shell 7, and a check valve 73 is provided at the oil inlet. It prevents the oil fluid entering the bottom shell 7 from flowing back.

[0040] Furthermore, an oil level sensor 9 is connected to the outside of the bottom shell 7. It detects the oil level in the fuel tank.

[0041] Furthermore, one end of the siphon joint 4 is connected to the oil return bellows 41, and the other end faces downward and is located in the bottom shell 7. A suction port connected to the sub-tank suction pipe 8 is further provided on the siphon joint 4. An injection nozzle 42 is provided inside the siphon joint 4. The lower end of the sub-tank suction pipe 8 is horizontally abutted against the bottom surface of the external fuel tank. In the above structure, the oil fluid in the oil return bellows 41 is sprayed into the bottom shell 7 through the injection nozzle 42, so as to generate a siphon effect at the suction port, and the sub-tank suction pipe 8 sucks the oil fluid from the external fuel tank into the bottom shell 7 (i.e., the oil storage barrel).

[0042] Furthermore, a sealing ring 21 is provided at the edge of the upper cover 2. It enhances the sealing performance when the upper cover 2 is connected to the fuel tank.

[0043] In this application, oil first enters through the oil inlet of the bottom shell 7, is filtered and absorbed by the filter screen 72, then is sprayed upward by the oil pump 71, passes through the oil outlet bellows 74 and the three-way joint 5 in sequence, and finally is sprayed through the oil outlet nozzle 1. At the same time, the oil return bellows 41 is connected to the siphon joint 4 through the three-way joint 5, so that the oil fluid is sprayed downward back into the bottom shell 7 through the injection nozzle 42 in the siphon joint 4. A suction port is also provided on one side of the siphon joint 4. The above action of spraying through the injection nozzle 42 will cause a siphon effect on the sub-tank suction pipe 8 connected to the suction port, and it sucks the oil fluid in the sub-tank into the bottom shell 7, making the oil fluid in the bottom shell 7 sufficient and preventing fuel cut-off and engine stalling. A connecting through-hole 23 is further provided at the lower end of the oil outlet nozzle 1 and is connected to the pressure relief channel 22. By adjusting the pressure of the oil fluid at the oil outlet bellows 74 and the oil outlet nozzle 1 through the pressure regulating valve, a part of the oil fluid will flow from the connecting through-hole 23 to the pressure relief channel 22 and be discharged through the pressure relief oil outlet pipe 31, thereby regulating the oil pressure.

[0044] In the above technical solution of the present utility model, in view of the technical problem that the prior art solution is too single, a solution significantly different from the prior art is provided. For the parts not involved in the technical solution of the present application, they are the same as the prior art or can be implemented by the prior art, and will not be elaborated herein.

[0045] In the above embodiments, the technical solutions have clearly and completely described the content of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

Claims

1. A horizontal fuel pump assembly, characterized in that it include: A bottom shell, the upper cover of which is provided with an inner bracket, the inner bracket is provided with a triangular connecting frame, and the bottom shell is provided with an oil outlet nozzle; The upper cover, the lower end of which is clamped and fixed to the upper end of the triangular connecting frame; An oil pump is installed in the bottom shell and is connected to an oil outlet bellows; A three-way joint, the upper end of which is connected to the lower end of the oil outlet nozzle, and the oil outlet bellows is connected to the lower end of the three-way joint; The port on the side of the three-way joint is connected to an oil return bellows, a siphon joint is provided on the inner bracket, the oil return bellows is connected to the siphon joint, the lower end of the siphon joint extends into the bottom shell, and the side of the siphon joint is connected to an auxiliary oil tank suction pipe.

2. The horizontal fuel pump assembly according to claim 1, characterized in that: A pressure relief channel is provided at the lower end of the upper cover, and the pressure relief channel is communicated with the oil outlet nozzle through a connecting through hole.

3. The horizontal fuel pump assembly according to claim 2, characterized in that: The pressure relief channel is connected with a regulating valve, and the outlet end of the regulating valve is connected with a pressure relief oil outlet pipe.

4. The horizontal fuel pump assembly according to claim 1, characterized in that: The lower end of the upper cover is provided with a connecting portion connected to the triangular connecting frame, and the two ends of the connecting portion are provided with clamping holes. The two ends of the triangular connecting frame have clamping heads, and the clamping heads are clamped into the clamping holes to connect the triangular connecting frame with the upper cover.

5. The horizontal fuel pump assembly according to claim 1, characterized in that: A filter screen is arranged at the lower end of the oil pump.

6. The horizontal fuel pump assembly according to claim 1, characterized in that: An oil inlet is arranged at the bottom of the bottom shell, and a check valve is arranged at the oil inlet.

7. The horizontal fuel pump assembly according to claim 1, characterized in that: The bottom shell is externally connected with an oil level sensor.

8. The horizontal fuel pump assembly according to claim 1, characterized in that: One end of the siphon joint is connected to the oil return bellows and the other end is downwardly located in the bottom shell. The siphon joint is also provided with a suction port connected to the auxiliary oil tank suction pipe. A fuel injector is provided inside the siphon joint, and the lower end of the auxiliary oil tank suction pipe is horizontally attached to the bottom surface of the external oil tank.

9. The horizontal fuel pump assembly according to claim 1, characterized in that: A sealing ring is arranged on the edge of the upper cover.

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