CN107255057B - Automobile pilot type fuel pump pressure regulator - Google Patents
Automobile pilot type fuel pump pressure regulator Download PDFInfo
- Publication number
- CN107255057B CN107255057B CN201710564757.7A CN201710564757A CN107255057B CN 107255057 B CN107255057 B CN 107255057B CN 201710564757 A CN201710564757 A CN 201710564757A CN 107255057 B CN107255057 B CN 107255057B
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- China
- Prior art keywords
- channel
- fuel
- valve core
- oil
- outlet channel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses a pressure regulating valve of an automobile pilot type fuel pump, wherein the middle part of a valve body is provided with a fuel channel with an axis extending leftwards and rightwards, two ends of the fuel channel are sealed, the lower end of the fuel channel is communicated with the fuel channel, the upper ends of a first fuel outlet channel and a second fuel outlet channel are communicated with the fuel channel, the fuel inlet channel is positioned between the first fuel outlet channel and the second fuel outlet channel, the middle part of the fuel inlet channel is provided with a bypass channel, the lower end of the bypass channel is communicated with the fuel channel, and the lower end of the bypass channel is positioned between the fuel inlet channel and the second fuel outlet channel; the fuel channel is internally provided with a valve core, the right end of the valve core is connected with a pressure regulating spring, the pressure regulating spring is abutted against the right end of the fuel channel, the valve core comprises a left valve core and a right valve core, a gap is reserved between the left valve core and the right valve core and the left valve core is connected through a connecting part, the left valve core is positioned below the fuel inlet channel, the connecting part is positioned below the bypass channel, and the right valve core is positioned between the bypass channel and the second fuel outlet channel. Stable pressure maintaining and good pressure characteristic.
Description
Technical Field
The invention relates to an automobile pilot type fuel pump pressure regulator, and belongs to automobile accessories.
Background
Conventional electric fuel pumps typically employ diaphragm fuel pressure regulators. The pressure regulator with the structure is composed of a pressure system by the diaphragm and the spring, and has high cost and manufacturing cost and complex process. The diaphragm therein is dependent on import for a long time. The diaphragm of the valve diaphragm type regulator is greatly influenced by the working environment, and the diaphragm is hardened after the temperature is lower than 30 ℃, so that the system pressure is overlarge; the membrane becomes soft at a temperature above 60 ℃ and the system pressure is reduced. And the self-coating is nitrile rubber, so that the high-methanol and ethanol fuel oil cannot be applied. And the requirement of an ultrahigh-pressure fuel system cannot be met due to the adoption of the diaphragm mechanism. The diaphragm is also subjected to the action of system pressure, cannot be matched with the system pressure well, and has poor pressure characteristics.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the automobile fuel pump pressure regulator which has the advantages of simple structure, wide application range, stable pressure maintaining and good pressure characteristic.
In order to achieve the above object, the technical scheme of the present invention is as follows: the utility model provides an automobile pilot type fuel pump pressure regulator, includes valve body, its characterized in that: the middle part of the valve body is provided with a fuel channel with an axis extending left and right, two ends of the fuel channel are sealed, the valve body above the fuel channel is provided with an oil inlet channel with an axis extending up and down, the lower end of the oil inlet channel is communicated with the fuel channel, the valve body below the fuel channel is also provided with a first oil outlet channel and a second oil outlet channel with the axis extending up and down from left to right, the upper ends of the first oil outlet channel and the second oil outlet channel are communicated with the fuel channel, the oil inlet channel is positioned between the first oil outlet channel and the second oil outlet channel, the inner diameter of the second oil outlet channel is smaller than the inner diameter of the first oil outlet channel, the middle part of the oil inlet channel is provided with a bypass channel, the lower end of the bypass channel is communicated with the fuel channel, and the lower end of the bypass channel is positioned between the oil inlet channel and the second oil outlet channel;
the fuel oil channel is internally provided with a valve core, the right end of the valve core is connected with a pressure regulating spring, the pressure regulating spring is abutted against the right end of the fuel oil channel, the valve core comprises a left valve core and a right valve core, a gap is reserved between the left valve core and the right valve core and the left valve core is connected through a connecting part, the left valve core is positioned below the fuel oil channel and used for communicating and blocking the fuel oil channel with the first fuel oil outlet channel, and meanwhile, the left valve core can block the communication between the bypass channel and the fuel oil channel; the connecting part is positioned below the bypass channel to enable the bypass channel to be communicated with the fuel channel, and the right valve core is positioned between the bypass channel and the second fuel outlet channel and used for blocking the bypass channel and the second fuel outlet channel, so that fuel pressure larger than the pressure of the pressure regulating spring can be formed in the fuel channel.
By adopting the scheme, the fuel enters the valve body from the fuel inlet channel, the fuel enters the fuel channel from the bypass channel due to the blocking of the left valve core and the first fuel outlet channel, pressure is generated between the left valve core and the right valve core, when the fuel pressure is greater than the pressure of the pressure regulating spring, the fuel pressure extrudes the pressure regulating spring, so that the valve core moves rightwards, in the process of moving rightwards, the fuel in the fuel channel is discharged through the second fuel outlet channel, and the fuel inlet channel is communicated with the first fuel outlet channel for pressure relief.
In the scheme, the method comprises the following steps: the length of the left valve core is longer than that of the right valve core.
In the scheme, the method comprises the following steps: and a limiting structure for limiting the stroke of the left end of the valve core is arranged in the fuel oil channel.
In the scheme, the method comprises the following steps: the limiting structure is a section of small inner diameter section of the fuel oil channel, the small inner diameter section is positioned on the left side of the valve core, and the small inner diameter section is positioned between the fuel oil inlet channel and the first fuel oil outlet channel. The valve core is prevented from moving leftwards by blocking the small inner diameter section.
The beneficial effects are that: the pressure regulating valve has the advantages of simple structure, reasonable design, wide application range, low manufacturing cost, good pressure maintaining performance and good pressure characteristic because no diaphragm is adopted.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
in embodiment 1, as shown in fig. 1, the pilot fuel pump pressure regulator for an automobile is composed of a valve body 1, a fuel channel 2, a pressure regulating spring 3, a valve core 4, an oil inlet channel 5, a first oil outlet channel 6, a second oil outlet channel 7 and a bypass channel 8.
The middle part of the valve body 1 is provided with a fuel channel 2 with an axis extending left and right, two ends of the fuel channel 2 are sealed, the valve body 1 is provided with an oil inlet channel 5 with an axis extending up and down, and the lower end of the oil inlet channel 5 is communicated with the fuel channel 2. The valve body 1 below the fuel channel 2 is further provided with a first oil outlet channel 6 and a second oil outlet channel 7, the axes of which extend up and down from left to right, the upper ends of the first oil outlet channel 6 and the second oil outlet channel 7 are communicated with the fuel channel 2, the oil inlet channel 5 is positioned between the first oil outlet channel 6 and the second oil outlet channel 7, the inner diameter of the second oil outlet channel 7 is smaller than that of the first oil outlet channel 6, a bypass channel 8 is arranged in the middle of the oil inlet channel 5, the lower end of the bypass channel 8 is communicated with the fuel channel 2, the inner diameter of the bypass channel 8 is smaller than that of the oil inlet channel 5, and the lower end of the bypass channel 8 is positioned between the oil inlet channel 5 and the second oil outlet channel 7.
The fuel channel 2 is internally provided with a valve core 4, the right end of the valve core 4 is connected with a pressure regulating spring 3, the pressure regulating spring 3 is abutted against the right end of the fuel channel 2, the valve core 4 comprises a left valve core 41 and a right valve core 42, a gap is reserved between the left valve core 41 and the right valve core 42 and is connected through a connecting part 43, and the length of the left valve core 41 is larger than that of the right valve core 42.
The left valve core 41 is positioned below the oil inlet channel 5 and used for communicating and blocking the oil inlet channel 5 with the first oil outlet channel 6, and meanwhile, the left valve core 41 can block the communication between the bypass channel 8 and the fuel channel 2; the connecting portion 43 is located below the bypass passage 8 to allow the bypass passage 8 to communicate with the fuel passage 2, and the right valve spool 42 is located between the bypass passage 8 and the second fuel outlet passage 7 to block the bypass passage 8 and the second fuel outlet passage, so that a fuel pressure greater than that of the pressure regulating spring 3 can be formed in the fuel passage 2.
A limit structure for limiting the stroke of the left end of the valve core 4 is arranged in the fuel channel 2. The preferred limiting structure is a small inner diameter section of the fuel passage 2, which is located on the left side of the valve spool 4, and which is located between the fuel inlet passage 5 and the first fuel outlet passage 6. That is, the fuel passage 2 is composed of a left passage, a right passage, and an intermediate connection passage. The internal diameter of the middle connecting channel is smaller than that of the left and right channels, the middle connecting channel is positioned between the oil inlet channel 5 and the first oil outlet channel 6, and the valve core is positioned in the right channel.
The present invention is not limited to the above-described specific embodiments, and it should be understood that modifications and variations can be made according to the inventive concept by those skilled in the art without inventive effort. In short, all technical solutions which can be obtained by a person skilled in the art based on the prior art through logic analysis, reasoning or limited experiments according to the inventive concept are within the scope of protection defined by the claims.
Claims (4)
1. The utility model provides an automobile pilot type fuel pump air-vent valve, includes valve body (1), its characterized in that: the middle part of the valve body (1) is provided with a fuel channel (2) with an axis extending left and right, two ends of the fuel channel (2) are sealed, the valve body (1) above the fuel channel (2) is provided with an oil inlet channel (5) with an axis extending up and down, the lower end of the oil inlet channel (5) is communicated with the fuel channel (2), the middle part of the valve body (1) below the fuel channel (2) is further provided with a first oil outlet channel (6) and a second oil outlet channel (7) with an axis extending up and down from left to right, the upper ends of the first oil outlet channel (6) and the second oil outlet channel (7) are communicated with the fuel channel (2), the oil inlet channel (5) is positioned between the first oil outlet channel (6) and the second oil outlet channel (7), the inner diameter of the second oil outlet channel (7) is smaller than the inner diameter of the first oil outlet channel (6), the middle part of the oil inlet channel (5) is provided with a bypass channel (8), the lower end of the bypass channel (8) is communicated with the fuel channel (2), and the upper end of the bypass channel (8) is positioned between the oil inlet channel (8) and the lower end of the second oil outlet channel (7);
the fuel oil channel (2) is internally provided with a valve core (4), the right end of the valve core (4) is connected with a pressure regulating spring (3), the pressure regulating spring (3) is abutted against the right end of the fuel oil channel (2), the valve core (4) comprises a left valve core (41) and a right valve core (42), a gap is reserved between the left valve core (41) and the right valve core (42) and is connected through a connecting part (43), the left valve core (41) is positioned below the fuel oil inlet channel (5) and is used for communicating and blocking the fuel oil inlet channel (5) and the first fuel oil outlet channel (6), and meanwhile, the left valve core (41) can block the communication of the bypass channel (8) and the fuel oil channel (2); the connecting part (43) is positioned below the bypass channel (8) to enable the bypass channel (8) to be communicated with the fuel channel (2), and the right valve core (42) is positioned between the bypass channel (8) and the second fuel outlet channel (7) and used for blocking the bypass channel (8) and the second fuel outlet channel (7), so that fuel pressure larger than the pressure of the pressure regulating spring (3) can be formed in the fuel channel (2).
2. The automotive lead type fuel pump pressure regulating valve of claim 1, wherein: the length of the left valve core (41) is longer than that of the right valve core (42).
3. The automotive lead fuel pump pressure regulating valve according to claim 1 or 2, wherein: a limiting structure for limiting the left end travel of the valve core (4) is arranged in the fuel channel (2).
4. The automotive lead type fuel pump pressure regulating valve of claim 3, wherein: the limiting structure is a section of small inner diameter section of the fuel oil channel (2), the small inner diameter section is positioned on the left side of the valve core (4), and the small inner diameter section is positioned between the fuel oil inlet channel (5) and the first fuel oil outlet channel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564757.7A CN107255057B (en) | 2017-07-11 | 2017-07-11 | Automobile pilot type fuel pump pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564757.7A CN107255057B (en) | 2017-07-11 | 2017-07-11 | Automobile pilot type fuel pump pressure regulator |
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| Publication Number | Publication Date |
|---|---|
| CN107255057A CN107255057A (en) | 2017-10-17 |
| CN107255057B true CN107255057B (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710564757.7A Active CN107255057B (en) | 2017-07-11 | 2017-07-11 | Automobile pilot type fuel pump pressure regulator |
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| CN (1) | CN107255057B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104637A (en) * | 1998-09-25 | 2000-04-11 | Mitsubishi Motors Corp | Fuel pressure regulating device |
| CN202431413U (en) * | 2011-12-27 | 2012-09-12 | 长沙市比亚迪汽车有限公司 | Fuel oil pressure regulator, fuel oil system of vehicle and vehicle thereof |
| JP2012246845A (en) * | 2011-05-27 | 2012-12-13 | Toyota Motor Corp | Pressure adjusting device |
| CN105065736A (en) * | 2015-07-14 | 2015-11-18 | 上海交通大学 | Load self-adaptive safety valve adopting changeable throttling orifice |
| CN206987991U (en) * | 2017-07-11 | 2018-02-09 | 重庆万力联兴实业(集团)有限公司 | Automobile pilot-operated type fuel pump pressure adjuster |
-
2017
- 2017-07-11 CN CN201710564757.7A patent/CN107255057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104637A (en) * | 1998-09-25 | 2000-04-11 | Mitsubishi Motors Corp | Fuel pressure regulating device |
| JP2012246845A (en) * | 2011-05-27 | 2012-12-13 | Toyota Motor Corp | Pressure adjusting device |
| CN202431413U (en) * | 2011-12-27 | 2012-09-12 | 长沙市比亚迪汽车有限公司 | Fuel oil pressure regulator, fuel oil system of vehicle and vehicle thereof |
| CN105065736A (en) * | 2015-07-14 | 2015-11-18 | 上海交通大学 | Load self-adaptive safety valve adopting changeable throttling orifice |
| CN206987991U (en) * | 2017-07-11 | 2018-02-09 | 重庆万力联兴实业(集团)有限公司 | Automobile pilot-operated type fuel pump pressure adjuster |
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| Publication number | Publication date |
|---|---|
| CN107255057A (en) | 2017-10-17 |
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