Automatic switching high-altitude fuel oil supply system

Abstract

The utility model provides an automatic switching high-altitude fuel oil supply system which comprises a body. The floater chamber is fixed on the body; the main metering hole is formed in the side of the float chamber; and the high-altitude measuring jet is locked on the side surface of the main oil well of the body. The automatic switching high-altitude fuel oil supply system not only can meet the requirements of performance, emission and the like of an engine in a plain area, but also can meet the requirements of performance, emission and the like of the engine in a plateau area.

Description

Technical Field

[0001] This utility model relates to the field of fuel supply technology, and in particular to an automatic switching high-altitude fuel supply system. Background Technology

[0002] With market demand, engines not only need to meet the performance and emission requirements in plains areas, but also need to take into account the performance and emission requirements in high-altitude areas.

[0003] The existing fuel supply system cannot simultaneously meet the performance and emission requirements of plains and plateaus. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides an automatic switching high-altitude fuel supply system, comprising:

[0005] The body; and the float chamber, which is fixed to the body; the main measuring hole, located on the side of the float chamber; and the high-altitude measuring hole, locked to the side of the main well of the body.

[0006] In some embodiments, the float chamber is fixed to the body by connecting bolts, and the main measuring hole is fixed to the connecting bolts.

[0007] In some embodiments, the fuel supply system further includes a solenoid valve located below the float chamber.

[0008] In some embodiments, the solenoid valve has an oil needle at one end near the main jet.

[0009] In some embodiments, the main jet is located on the float chamber, at the front end of the oil needle of the solenoid valve.

[0010] In some embodiments, the diameter of the high-altitude orifice is smaller than that of the main orifice.

[0011] In some embodiments, the fuel supply system further includes an auxiliary metering orifice and a nozzle, the nozzle being fixed to the body via the auxiliary metering orifice.

[0012] In some embodiments, the fuel supply system further includes a mixing chamber fixed to the body and disposed above the nozzle.

[0013] In some embodiments, the diameter of the auxiliary orifice is larger than that of the main orifice and the high-altitude orifice.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The automatic switching high-altitude fuel supply system provided by this utility model can meet the performance and emission requirements of the engine in plain areas as well as in high-altitude areas. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the automatically switching high-altitude fuel supply system shown in the embodiment of the present invention when the solenoid valve is open.

[0017] Figure 2 This is a schematic diagram of the structure of the automatically switching high-altitude fuel supply system shown in the embodiment of the present invention when the solenoid valve is closed.

[0018] In the attached figures, the following labels are used:

[0019] 1-Ontology;

[0020] 2-Float chamber;

[0021] 3-Main measuring hole;

[0022] 31-Main oil passage;

[0023] 4-High-altitude measuring orifice;

[0024] 41-High-altitude orifice oil passage;

[0025] 5-Connecting bolts;

[0026] 6-Solenoid valve;

[0027] 61-Oil needle;

[0028] 7-Auxiliary measuring orifice;

[0029] 8- Nozzle;

[0030] 9-Mixing chamber. Detailed Implementation

[0031] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0032] The specification and subsequent claims use certain terms to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and subsequent claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and subsequent claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0033] It should be noted that in the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", as well as "about", "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] See Figure 1-2 An embodiment of this utility model provides an automatic switching high-altitude fuel supply system, including: a body 1; a float chamber 2, the float chamber 2 being fixed on the body 1; a main metering orifice 3, disposed on the side of the float chamber 2; and a high-altitude metering orifice 4, locked to the side of the main oil well of the body 1.

[0035] In this embodiment, the float chamber 2 is fixed to the body 1 by connecting bolts 5, and the main measuring hole 3 is fixed to the connecting bolts 5.

[0036] The high-altitude fuel supply system described in this embodiment also includes a solenoid valve 6, which is fixed on the float chamber 2; the end of the solenoid valve 6 near the main metering orifice 3 is provided with an oil needle 61; the main metering orifice 3 may also be provided on the float chamber 2, located at the front end of the oil needle 61 of the solenoid valve 6.

[0037] In this embodiment, the diameter of the high-altitude orifice 4 is smaller than that of the main orifice 3.

[0038] The high-altitude fuel supply system in this embodiment further includes an auxiliary metering orifice 7 and a nozzle 8. The nozzle 8 is fixed to the body 1 through the auxiliary metering orifice 7. The high-altitude fuel supply system also includes a mixing chamber 9, which is fixed to the body 1 and located above the nozzle 8.

[0039] In this embodiment, the diameter of the auxiliary measuring orifice 7 is larger than that of the main measuring orifice 3 and the high-altitude measuring orifice 4.

[0040] In this embodiment, the main orifice 3 controls the engine's performance and emissions in plain areas, while the high-altitude orifice 4 controls the engine's performance and emissions in high-altitude areas.

[0041] When using the automatic switching high-altitude fuel supply system provided in this embodiment, please refer to... Figure 1 When the needle valve 61 of the solenoid valve 6 is open, the fuel in the float chamber 2 can enter the mixing chamber 9 through the nozzle 8 via the main oil passage 31 in the main metering orifice 3 and the high-altitude metering orifice 41 in the high-altitude metering orifice 4 for engine operation. Since the diameter of the main metering orifice 3 is larger than that of the high-altitude metering orifice 4, the high-altitude metering orifice 4 is inactive at this time. The flow rate and engine performance emissions are controlled through the main metering orifice 3.

[0042] See Figure 2 When the solenoid valve 6 is energized, the needle valve 61 is in the closed state, and the main metering orifice 3 is blocked by the needle valve 61. At this time, fuel can only enter from the high-altitude metering orifice 4 channel. The flow rate and engine performance emissions are controlled by the size of the high-altitude metering orifice 4.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatically switched high altitude fuel supply system characterized by: Comprise: A body; And a float chamber, the float chamber is fixed on the body; A main metering hole is arranged on the side of the float chamber; A high-altitude metering hole is locked on the side of the main oil well of the body.

2. The automatically switching high altitude fuel feed system of claim 1, wherein: The float chamber is fixed on the body by a connecting bolt, and the main metering hole is fixed on the connecting bolt.

3. The automatically switching high altitude fuel feed system of claim 1, wherein: It also includes a solenoid valve, which is arranged below the float chamber.

4. The automatically switching high altitude fuel feed system of claim 3, wherein: The solenoid valve is provided with an oil needle near one end of the main metering hole.

5. The automatically switching high altitude fuel feed system of claim 4, wherein: The main metering hole is arranged on the float chamber and located in front of the oil needle of the solenoid valve.

6. The automatically switching high altitude fuel feed system of claim 1, wherein: The aperture of the high-altitude metering hole is smaller than that of the main metering hole.

7. The automatically switching high altitude fuel feed system of claim 1, wherein: It also includes an auxiliary metering hole and a nozzle, which is fixed on the body through the auxiliary metering hole.

8. The automatically switching high altitude fuel feed system of claim 7, wherein: It also includes a mixing chamber, which is fixed on the body, and the mixing chamber is arranged above the nozzle.

9. The automatically switching high altitude fuel feed system of claim 7, wherein: The aperture of the auxiliary metering hole is larger than that of the main metering hole and the high-altitude metering hole.

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