Motorcycle fuel pump assembly
By setting up an oil drain pipeline in the motorcycle fuel pump, the fuel during pressure relief of the pressure regulator is sent back to the oil storage chamber and the filter is reversely flushed, which solves the problems of noise, emergency braking and short filter life during the use of the fuel pump, achieving lower noise, more reliable fuel supply and extended filter life.
Patent Information
- Application Number
- CN202420788154.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-16
AI Technical Summary
During use, there are problems such as noise caused by the pressure regulating valve when the pressure is relieved, the fuel may not be sent into the pump core during emergency braking, and the filter network has a short life.
By setting up an oil drain pipeline on the pump core bracket, the fuel oil during the pressure relief of the pressure regulator is sent back to the oil storage chamber, and this process is used to reversely flush the filter to extend the life of the filter.
It effectively avoids the problem of fire out during emergency braking, extends the service life of the filter, and reduces noise through internal pressure relief.
Smart Images
Figure CN222576774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fuel pump assembly for a motorcycle. Background Art
[0002] The electric fuel pump assembly is one of the basic components of the fuel supply system of the electronic fuel injection system. It is usually placed in the motorcycle's fuel tank. Its function is to extract the fuel from the tank, pressurize it, and then deliver it to the motorcycle's engine for fuel supply. The following problems exist during use: 1. When the pressure regulating valve releases pressure, the excess fuel is sent back to the tank, which will produce a certain amount of noise; 2. When the vehicle is in emergency braking, the fuel in the tank may not be able to be delivered to the pump core normally, causing the flameout; 3. The filter installed on the fuel inlet of the fuel pump will accumulate more impurities after long-term use, resulting in its short life. Utility Model Content
[0003] In view of the above problems, the utility model provides a motorcycle fuel pump assembly, which effectively solves the problems pointed out in the background technology.
[0004] The technical solution adopted by the utility model is:
[0005] A motorcycle fuel pump assembly comprises a pump body and a pump core fixed in the pump body by a pump core bracket, an oil storage chamber is formed between the pump core and the pump body, a plurality of oil suction ports are provided on the pump body, a filter screen is provided on the inner side of the oil suction port, an oil outlet chamber is provided at the oil outlet of the pump core by the pump core bracket, a pressure regulating valve is provided in the oil outlet chamber, an oil inlet of the pressure regulating valve is connected with the oil outlet chamber, and an oil drain port is connected with the oil storage chamber after passing through an oil drain pipeline provided on the pump core bracket.
[0006] Preferably, the oil outlet cavity is located at the top of the pump core bracket, and the pressure regulating valve is installed in the oil outlet cavity from top to bottom and fixed to the pump core bracket by a buckle.
[0007] Preferably, the oil drain port of the pressure regulating valve is located at the bottom of the pressure regulating valve.
[0008] The utility model directly returns the fuel discharged by the pressure regulating valve when the pressure is released to the oil storage chamber through the oil release pipeline, which not only can avoid the problem of the vehicle stalling due to lack of oil in the oil storage chamber during emergency braking, but also the fuel returned to the oil storage chamber during pressure release can reversely flush the filter screen, flushing impurities on the filter screen and extending the service life of the filter screen. At the same time, since the fuel pressure is released inside the pump body, the noise is greatly reduced compared with the conventional fuel pressure release into the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the utility model;
[0010] Figure 2 It is a side structural schematic diagram of the utility model;
[0011] Figure 3 It is a longitudinal sectional view of the utility model;
[0012] Figure 4 It is a structural schematic diagram of the hidden pressure regulating valve of the utility model. DETAILED DESCRIPTION
[0013] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0014] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0015] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.
[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0019] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0020] like Figure 1-4 As shown, a motorcycle fuel pump assembly includes a pump body 1, and a pump core 3 fixed in the pump body 1 through a pump core bracket 2, an oil storage chamber 4 is formed between the pump core 3 and the pump body 1, a plurality of oil suction ports 5 are opened on the pump body 1, a filter is provided on the inner side of the oil suction port 5, the pump core bracket 2 is provided with an oil outlet chamber 7 at the oil outlet 6 of the pump core 3, a pressure regulating valve 8 is provided in the oil outlet chamber 7, the oil inlet of the pressure regulating valve 8 is connected with the oil outlet chamber 7, and the oil drain port 9 is connected with the oil storage chamber 4 after passing through the oil drain pipeline 10 opened on the pump core bracket 2.
[0021] The oil outlet cavity 7 is located at the top of the pump core bracket 2 , and the pressure regulating valve 8 is installed in the oil outlet cavity 7 from top to bottom and is fixed on the pump core bracket 2 by a buckle 11 .
[0022] The oil drain port 9 of the pressure regulating valve 8 is located at the bottom of the pressure regulating valve 8 .
[0023] The working principle of the utility model is as follows:
[0024] The fuel in the fuel tank enters the oil storage chamber 4 from the oil suction port 5 through the filter screen. The fuel in the oil storage chamber 4 is pressurized by the pump core 3 and enters the oil outlet chamber 7 from the oil outlet port 6 of the pump core 3. The fuel in the oil outlet chamber 7 is depressurized by the pressure regulating valve 8 and then supplied. When the pressure regulating valve 8 releases the pressure, the excess fuel is discharged from the oil drain port 9 and returns to the oil storage chamber 4 through the oil drain pipeline 10. In the process of returning to the oil storage chamber 4, the filter screen will be reversely flushed, so that the impurities on the filter screen are washed off, thereby extending the service life of the filter screen.
[0025] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.
Claims
1. A motorcycle fuel pump assembly, characterized in that: The invention comprises a pump body (1), and a pump core (3) fixed in the pump body (1) by a pump core bracket (2); an oil storage chamber (4) is formed between the pump core (3) and the pump body (1); a plurality of oil suction ports (5) are provided on the pump body (1); a filter screen is provided on the inner side of the oil suction port (5); the pump core bracket (2) is provided with an oil outlet chamber (7) at the oil outlet (6) of the pump core (3); a pressure regulating valve (8) is provided in the oil outlet chamber (7); an oil inlet of the pressure regulating valve (8) is connected to the oil outlet chamber (7); an oil drain port (9) is connected to the oil storage chamber (4) after passing through an oil drain pipeline (10) provided on the pump core bracket (2).
2. A motorcycle fuel pump assembly according to claim 1, characterized in that: The oil outlet cavity (7) is located at the top of the pump core bracket (2), and the pressure regulating valve (8) is installed in the oil outlet cavity (7) from top to bottom and is fixed to the pump core bracket (2) by means of a buckle (11).
3. A motorcycle fuel pump assembly according to claim 2, characterized in that: The oil drain port (9) of the pressure regulating valve (8) is located at the bottom of the pressure regulating valve (8).