Brushless motorcycle external fuel pump assembly with filter element

Abstract

The brushless motorcycle external fuel pump assembly with the filter element comprises a pump support, the two ends of the pump support are connected with a lower end cover and an upper end cover in a clamped mode respectively, the lower end cover and the upper end cover are connected with the pump support in a clamped mode to form a closed first cavity and a closed second cavity, and a pressure relief frame is arranged on the upper end cover; an oil inlet pipe; an oil outlet pipe. According to the brushless motorcycle external fuel pump assembly with the filter element, the fuel pump is an external pump assembled outside the fuel tank, the pump support is divided into the first cavity and the second cavity which are independent, and fuel in the fuel tank is pumped into the second cavity from the fuel inlet pipe through the pump element of the second cavity; solid impurities such as rust, dust and colloid in fuel oil are efficiently intercepted through the filter element and prevented from entering the fuel oil pump, the lower end cover can be separated from the pump support during maintenance so that the filter element can be replaced, the pump core can be maintained by relatively disassembling the upper end cover, and then the maintenance efficiency of the fuel oil pump is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel pumps, in particular to a brushless motorcycle external fuel pump assembly with a filter element. Background Art

[0002] The fuel system is mainly composed of components such as the fuel tank, fuel pump and injector. The fuel tank is used to store fuel. The fuel pump draws fuel from the tank so that the fuel maintains a certain pressure and is sprayed from the injector into the engine for combustion, thereby allowing the engine to run continuously and stably.

[0003] Motorcycle fuel pumps are often built-in pumps, with the pump body installed inside the fuel tank. Due to the limitation of the fuel tank, the space on the motorcycle becomes cramped, and disassembly, maintenance or assembly are not easy. After the motorcycle has been running for a long time, the motorcycle is prone to problems such as failure to start, difficulty starting or weak acceleration. The phenomenon is that the fuel pump is clogged or the pump core overheats, causing the above problems. As a result, the fuel pump may experience problems such as insufficient fuel flow or pressure fluctuations during use. The built-in pump is not easy to remove, which greatly increases the difficulty of maintenance and the time of replacement. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to solve the problem that the fuel pump is difficult to disassemble and maintain, which affects the fuel flow rate or pressure fluctuation.

[0005] In order to achieve the above object, the present invention can be implemented through the following technical solutions: A brushless motorcycle external fuel pump assembly with a filter element, comprising:

[0006] A pump bracket, wherein the two ends of the pump bracket are respectively clamped with a lower end cover and an upper end cover, the lower end cover and the upper end cover are clamped with the pump bracket to form a closed first chamber and a second chamber, and the upper end cover is provided with a pressure relief frame;

[0007] Wherein, a filter element is provided in the first chamber, and a pump element connected to the filter element is provided on the second chamber;

[0008] an oil inlet pipe, the oil inlet pipe being arranged on the first chamber and facing the filter element;

[0009] An oil outlet pipe is provided on the second chamber, and the pump core is connected to the oil outlet pipe through the pressure relief frame.

[0010] In an embodiment of the present invention, a guide plate is provided between the first chamber and the second chamber, an oil hole is provided at the axis of the guide plate, and a sealing member is provided on one side of the oil hole;

[0011] The filter element is clamped on one side of the oil hole, and the pump element is clamped on the other side of the oil hole through the sealing member.

[0012] The pressure relief frame is arranged in the second chamber, and the first hole site, the second hole site and the third hole site are arranged on the pressure relief frame.

[0013] The first hole site is communicated with the second hole site, the pump core is clamped on the first hole site, and the oil outlet pipe is communicated with the second hole site.

[0014] The third hole site is provided with a pressure regulating valve and is communicated with the second hole site.

[0015] The pressure regulating valve is provided with a fixed disc, the fixed disc is respectively provided with a T-shaped slide rod and a spring, the end of the T-shaped slide rod is provided with a ball, and the spring pushes the T-shaped slide rod to control the ball to block the oil inlet end of the pressure regulating valve.

[0016] The first hole site and the third hole site are both provided with a cover buckle.

[0017] The pump support is provided with a drain pipe communicated with the second chamber, and the drain pipe is provided with a one-way valve.

[0018] The second chamber of the pump support is provided with a wire harness plug, and the wire harness plug is electrically connected with the pump core.

[0019] The lower end cover and the upper end cover are both provided with a sealing ring abutting against the pump support, the lower end cover is provided with a buckle clamping the pump support, and the upper end cover is laser welded on the pump support.

[0020] The pump support is respectively provided with a first arc-shaped abutment plate, a second arc-shaped abutment plate and a limiting block, and the pump core is clamped on the pump support along the first arc-shaped abutment plate, the second arc-shaped abutment plate and the limiting block.

[0021] The outer wall of the pump support is provided with a mounting block.

[0022] Compared with the prior art, the fuel pump is an external pump assembled to the outside of the oil tank, and the pump support is divided into independent first and second chambers. The pump core in the second chamber pumps the fuel in the oil tank from the oil inlet pipe into the second chamber, the filter core efficiently intercepts solid impurities such as rust, dust and gum in the fuel, prevents the solid impurities from entering the fuel pump, and when maintenance is performed, the lower end cover can be separated from the pump support to replace the filter core, and the upper end cover can be removed to maintain the pump core, thereby improving the maintenance efficiency of the fuel pump. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the fuel pump of the invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the fuel pump of the invention with some parts exploded;

[0025] Figure 3 It is a partially cutaway plan view of the pump bracket, lower end cover, and upper end cover of the fuel pump of the invention;

[0026] Figure 4 is a schematic diagram of the internal structure of the pump bracket of the fuel pump of the invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the fuel pump of the invention after the pump core and the pressure relief frame are separated;

[0028] Figure 6 It is an isometric view and a half-section planar structural schematic diagram of the pressure regulating valve of the fuel pump of the invention;

[0029] Figure 7 It is a partially cutaway plan view of the pump bracket, lower end cover and upper end cover of the fuel pump of the invention.

[0030] Description of reference numerals:

[0031] 1. Pump bracket; 11. Lower end cover; 111. Sealing ring; 12. Upper end cover; 13. Oil drain pipe; 14. Oil inlet pipe; 15. Oil outlet pipe; 151. Oil outlet channel; 16. First chamber; 161. Filter element; 17. Wiring harness plug; 18. Second chamber; 181. Oil hole; 182. First arc-shaped support plate; 183. Second arc-shaped support plate; 184. Limit block; 185. Guide plate; 19. Mounting block; 2. Pressure relief frame; 21. First hole position; 22. Second hole position; 23. Third hole position; 24. Pressure regulating valve; 241. Fixed plate; 242. Spring; 243. T-shaped slide bar; 244. Ball; 25. Cover buckle; 3. Pump core; 4. One-way valve; 41. Sealing ball; 42. Elastic member; 43. Push rod; 44. Chuck. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention.

[0033] like Figures 1-7 As shown, a brushless motorcycle external fuel pump assembly with a filter element 161 includes:

[0034] The pump bracket 1 has a lower end cover 11 and an upper end cover 12 at both ends thereof, and the lower end cover 11 and the upper end cover 12 are connected to the pump bracket 1 to form a closed first chamber 16 and a second chamber 18. The upper end cover 12 is provided with a pressure relief frame 2;

[0035] The first chamber 16 is provided with a filter core 161, and the second chamber 18 is provided with a pump core 3 connected with the filter core 161;

[0036] The oil inlet pipe 15 is arranged on the first chamber 16 and faces the filter core 161.

[0037] The oil outlet pipe 15 is arranged on the second chamber 18, and the pump core 3 is connected with the oil outlet pipe 15 through the pressure relief frame 2.

[0038] Specifically, the outer surface of the pump bracket 1 is cylindrical, facilitating the installation of the pump bracket 1, and the inner part of the pump bracket 1 is divided into two chambers (the first chamber 16 and the second chamber 18) connected with each other. The first chamber 16 is provided with the filter core 161 to filter the impurities attached to the fuel and slow down the phenomenon of blockage. The second chamber 18 is provided with the pump core 3 to pump the fuel in the fuel tank to the oil inlet pipe 15, and then to the fuel pump, so that the fuel maintains a certain oil pressure to continuously supply the motorcycle engine, thereby ensuring the continuous and stable operation of the motorcycle. The diameter of the oil inlet pipe 15 is larger than that of the oil outlet pipe 15 to reduce the oil suction resistance, so as to ensure that the fuel can be stably sucked into the pump bracket 1, avoid cavitation caused by insufficient pressure, and also make it possible to more accurately control the flow, which is suitable for scenes requiring accurate flow regulation. If the size of the oil outlet is too large, it may cause pressure drop and cause system vibration or component damage. Properly increasing the size of the oil inlet can balance the pressure difference between the inlet and outlet, and ensure the smooth operation of the equipment. Further, the pump core 3 is a brushless pump with good performance in harsh environments, and has the characteristics of efficiency optimization, safety enhancement and stability improvement.

[0039] As a further embodiment of the present application, a flow guide disc 185 is arranged between the first chamber 16 and the second chamber 18, an oil hole 181 is formed at the axis of the flow guide disc 185, a sealing element is arranged on one side of the oil hole 181, the filter core 161 is clamped on one side of the oil hole 181, and the pump core 3 is clamped on the other side of the oil hole 181 through the sealing element. Figure 3 The one side refers to the upper side as shown in Figure 3 The other side refers to the lower side as shown in

[0040] Specifically, when the oil enters the first chamber 16, the fuel will enter from the four sides of the filter element 161, and after filtration, it will be discharged from the middle to the pump core 3 to filter impurities and make the fuel purer, ensure the precision of the fuel injection amount and optimize the atomization effect, and also protect the internal parts of the pump core 3, reduce damage and improve service life. When installing, the filter element 161 is first clamped into the groove of the flow guide disc 185 from the first chamber 16, and then the lower end cover 11 is covered to fix the filter element 161, and then the pump core 3 is installed from the opening of the second chamber 18, the oil inlet end of the pump core 3 is clamped to the other end of the oil hole 181 through a sealing element, and then the upper end cover 12 is covered to support and fix the pump core 3. The sealing element can be a rubber ring.

[0041] As further provided in the embodiments of the application, the pressure relief frame 2 is arranged in the second chamber 18, and the pressure relief frame 2 is provided with a first hole site 21, a second hole site 22 and a third hole site 23. The first hole site 21 communicates with the second hole site 22, the pump core 3 is clamped on the first hole site 21, the oil outlet pipe 15 communicates with the second hole site 22, and the oil outlet pipe 15 is provided with an oil outlet flow channel 151 (as shown in Figure 3 The third hole site 23 is provided with a pressure regulating valve 24 and communicates with the second hole site 22.

[0042] Specifically, as shown in Figure 5 The pressure relief frame 2 is used to guide the fuel to enter from the first oil hole 181 and then discharge from the second oil hole 181, so as to change the flow direction of the oil. When the oil pressure is too large, too much fuel will be sprayed from the pressure regulating valve 24 into the second chamber 18, and the sprayed fuel will cool the pump core 3. The first hole site 21 communicates with the second hole site 22, the second hole site 22 communicates with the third hole site 23, but the third hole site 23 does not communicate with the first hole site 21. When the oil enters the second hole site, the third hole site 23 will be filled at the same time. When the oil pressure is too large, the pressure regulating valve 24 will start to release the excess oil pressure. Further, the pressure relief frame 2 is detachably assembled to the lower end cover 11.

[0043] As further provided in the embodiments of the application, the pressure regulating valve 24 is provided with a fixing disc 241, the fixing disc 241 is respectively provided with a T-shaped slide rod and a spring 242, the end of the T-shaped slide rod is provided with a ball 244, and the spring 242 pushes the T-shaped slide rod to control the ball 244 to block the oil inlet end of the pressure regulating valve 24.

[0044] Specifically, when the cover fuel pump pumps oil, the pump core 3 pumps the fuel with a certain pressure from the oil outlet end to the first hole position 21, the fuel enters the second hole position 22 along the circular hole, when the oil pressure of the second hole position 22 reaches the rated range, the fuel will push the ball 244 at this time, so that the ball 244 drives the T-shaped slide rod to slide, and then the fuel is sprayed from the fixed disc 241 of the pressure regulating valve 24 into the second cavity 18, so as to reduce the oil pressure at the oil outlet pipe 15, so that the oil pressure maintains a suitable pressure value, the fixed disc 241 is fixedly connected to the cylinder of the pressure regulating valve 24, and the T-shaped slide rod 243 is slidably connected to the fixed disc 241. Under normal circumstances, the spring 242 pushes the T-shaped slide rod 243, so that the ball 244 blocks the flow channel of the pressure regulating valve 24 and the second hole position 22.

[0045] As a further provided embodiment of the application, the first hole position 21 and the third hole position 23 are both provided with a cover buckle 25, the cover buckle 25 is connected to the pressure relief frame 2 through threads, and is used for blocking another outlet of the first hole position 21 and the third hole position 23. When the cover buckle 25 is separated from the pressure relief frame 2, the first hole position 21 and the third hole position 23 can be drained, thereby facilitating the maintenance of the pressure relief frame 2.

[0046] As a further provided embodiment of the application, the pump support 1 is provided with a drain pipe 13 communicating with the second cavity 18, and the drain pipe 13 is provided with a one-way valve 4.

[0047] Specifically, when the fuel in the second cavity 18 in the pump support 1 is too much, the pressure of the fuel gradually increases to push the blocking ball 41 to make the jack 43 slide on the chuck 44, at this time, the elastic member 42 is in a compressed state, so that the drain pipe 13 is in a state of oil outlet conduction, and the excessive fuel is drained back to the oil tank through the drain pipe 13.

[0048] Further, the central axes of the oil inlet pipe 15, the oil outlet pipe 15 and the drain pipe 13 are all on the same horizontal plane, the three pipe bodies are concentrated, the space utilization of the motorcycle is improved, the external oil pipe is limited, and the appearance of the pipeline is greatly improved.

[0049] As a further provided embodiment of the application, the second cavity 18 of the pump support 1 is provided with a wire harness plug 17, and the wire harness plug 17 is electrically connected with the pump core 3.

[0050] Specifically, when the pump core 3 pumps oil, the fuel is sprayed from the pressure regulating valve 24 when the oil pressure reaches a certain rated range, so that the second cavity 18 is filled with fuel, so as to cool the pump core 3, the wire harness plug 17 and the spare parts through the fuel. Since the fuel pump is an external pump, when the motorcycle starts, the pump body can be cooled by external airflow, and the two cooling methods are combined to reduce the overheating of the fuel pump.

[0051] As further provided by the present application, the lower end cover 11 and the upper end cover 12 are both provided with a sealing ring 111 abutting against the pump bracket 1, the lower end cover 11 is provided with a buckle engaging with the pump bracket 1, and the upper end cover 12 is laser welded to the pump bracket 1.

[0052] Specifically, the buckle is evenly divided into multiple groups along the outer wall of the lower end cover 11, the pump bracket 1 is provided with the same number of inclined clamping platforms as the buckle, the buckle is connected with the clamping platform to cover the lower end cover 11 to the pump bracket 1, and the upper end cover 12 is interference fitted to the pump bracket 1. When the pump core 3 is assembled into the pump bracket 1, the upper end cover 12 is installed to one end of the pump bracket 1 step by step, so that the pressure relief bracket 2 has a certain positioning and fixing effect on the pump core 3. After the pump core 3 is started, the upper end cover 12 will inevitably shake. In order to prevent it from falling out, the upper end cover 12 needs to be laser welded to the pump bracket 1. In order to improve the sealing of the lower end cover 11 and the upper end cover 12, a sealing ring 111 is arranged on the two cover bodies.

[0053] As further provided by the present application, the pump bracket 1 is respectively provided with a first arc-shaped supporting plate 182, a second arc-shaped supporting plate 183 and a limiting block 184, and the pump core 3 is clamped to the pump bracket 1 along the first arc-shaped supporting plate 182, the second arc-shaped supporting plate 183 and the limiting block 184.

[0054] Specifically, the first arc-shaped supporting plate 182 and the second arc-shaped supporting plate 183 are both provided with an arc surface, which is fitted with the outer wall of the pump core 3 to guide the pump core 3 to be assembled from the upper end cover 12 to the flow guide disc 185. The limiting block 184 limits the axial rotation of the pump core 3 to reduce the shaking phenomenon of the pump core 3 during operation, thereby reducing the generation of noise and improving the stability of the pump core 3 when pumping oil.

[0055] As further provided by the present application, the outer wall of the pump bracket 1 is provided with two mounting blocks 19 to facilitate the positioning effect of the pump bracket 1 and improve the efficiency of assembling the pump bracket 1 to the motorcycle.

[0056] The above technical solutions of the present application solve the technical problems of the prior art solutions which are too single, and provide a solution significantly different from the prior art. The parts not involved in the technical solutions of the present application are the same as or can be realized by the prior art, and will not be described again.

[0057] The technical solutions in the above embodiments have clearly and completely described the content of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A brushless motorcycle external fuel pump assembly with a filter element, characterized in that: include: A pump bracket (1), wherein two ends of the pump bracket (1) are respectively clamped with a lower end cover (11) and an upper end cover (12), the lower end cover (11) and the upper end cover (12) are clamped with the pump bracket (1) to form a closed first chamber (16) and a second chamber (18), and a pressure relief frame (2) is provided on the upper end cover (12); A filter element (161) is provided in the first chamber (16), and a pump element (3) connected to the filter element (161) is provided on the second chamber (18); an oil inlet pipe (14), the oil inlet pipe (14) being disposed on the first chamber (16) and facing the filter element (161); An oil outlet pipe (15) is provided on the second chamber (18), and the pump core (3) is connected to the oil outlet pipe (15) through the pressure relief frame (2).

2. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: A guide plate (185) is provided between the first chamber (16) and the second chamber (18), an oil hole (181) is provided at the axis of the guide plate (185), and a sealing member is provided on one side of the oil hole (181); The filter element (161) is clamped on one side of the oil hole (181), and the pump element (3) is clamped on the other side of the oil hole (181) through the sealing member.

3. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: The pressure relief frame (2) is arranged in the second chamber (18), and a first hole position (21), a second hole position (22) and a third hole position (23) are provided on the pressure relief frame (2); The first hole (21) is connected to the second hole (22), the pump core (3) is snap-fitted to the first hole (21), and the oil outlet pipe (15) is connected to the second hole (22); The third hole position (23) is provided with a pressure regulating valve (24) and is connected to the second hole position (22).

4. The brushless motorcycle external fuel pump assembly with filter according to claim 3, characterized in that: The pressure regulating valve (24) is provided with a fixed disk (241), and the fixed disk (241) is respectively provided with a T-shaped slide bar (243) and a spring (242). A ball (244) is provided at the end of the T-shaped slide bar (243), and the spring (242) pushes the T-shaped slide bar (243) to control the ball (244) to block the oil inlet end of the pressure regulating valve (24).

5. The brushless motorcycle external fuel pump assembly with filter according to claim 3, characterized in that: The first hole position (21) and the third hole position (23) are both provided with a cover buckle (25).

6. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: An oil drain pipe (13) communicating with the second chamber (18) is provided on the pump bracket (1), and a one-way valve (4) is provided in the oil drain pipe (13).

7. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: A wiring harness plug (17) is provided in the second chamber (18) of the pump bracket (1), and the wiring harness plug (17) is electrically connected to the pump core (3).

8. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: The lower end cover (11) and the upper end cover (12) are both provided with a sealing ring (111) that abuts against the pump bracket (1), the lower end cover (11) is provided with a buckle that engages with the pump bracket (1), and the upper end cover (12) is laser welded to the pump bracket (1).

9. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: A first arc-shaped support plate (182), a second arc-shaped support plate (183) and a limit block (184) are respectively provided in the pump bracket (1); the pump core (3) is clamped onto the pump bracket (1) along the first arc-shaped support plate (182), the second arc-shaped support plate (183) and the limit block (184).

10. The brushless motorcycle external fuel pump assembly with filter according to claim 1, characterized in that: A mounting block (19) is provided on the outer wall of the pump bracket (1).

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