CN103573499A - Fuel pump for automobile - Google Patents
Fuel pump for automobile Download PDFInfo
- Publication number
- CN103573499A CN103573499A CN201310513973.0A CN201310513973A CN103573499A CN 103573499 A CN103573499 A CN 103573499A CN 201310513973 A CN201310513973 A CN 201310513973A CN 103573499 A CN103573499 A CN 103573499A
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- Prior art keywords
- main body
- spring
- oil
- fuel pump
- upper top
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Abstract
The invention discloses a fuel pump for an automobile. The fuel pump comprises a main body, an upper top and a lower bottom, wherein the upper top and the lower bottom are fixed on two sides of the main body through bolts. The fuel pump is characterized in that a first spring, a spring top block and a second net film are arranged in sequence between the upper top and the main body; the first spring is matched and connected with the spring top block; the front end surface of the spring top block is pressed on the second net film; a first net film is arranged between the lower bottom and the main body; an inner oil inlet chamber, a negative pressure control chamber and an oil discharge chamber are formed inside the main body; the inner oil inlet chamber is communicated with the negative pressure control chamber; the negative pressure control chamber is communicated with the oil discharge chamber; valves and limiting bodies which are fixed on the main body are respectively arranged at the outlet of the inner oil inlet chamber and the inlet of the oil discharge chamber; an oil feeding tube is further arranged on the main body; a second spring and a ball valve are arranged at the connection part of the oil feeding tube and the main body; one end of the second spring is fixed on the inner wall of the oil feeding tube; the other end of the second spring is matched with the ball valve. The fuel pump is stable in performance and is safe and reliable.
Description
Technical field
The present invention relates to a kind of component of automotive power transmission system, relate in particular to a kind of fuel pump for motor vehicle.
Background technique
For oil-burning machine product, fuel tank intermediate fuel oil supply engine under Action of Gravity Field normally, but during a lot of engine design, for various reasons, the position of fuel tank is very low, thus while causing fuel delivery, pressure is inadequate, cannot meet motor acting requirement.Thereby design fuel pump, it is on the low side that fuel pump is widely used in fuel tank position, and fuel feeding pressure cannot meet in the engine design of engine demand.Oil well oil outlet tube in the fuel supply chamber of fuel pump enters in motor, after engine oil inlet is saturated, understanding some pressure oil is got back in the fuel supply chamber of fuel pump by reflow pipe, in this process, because the oil pressure in the fuel supply chamber of return tube and motor and fuel pump is inconsistent, fuel pump in the market does not all have safe design, when motor is when reducing to low speed at a high speed, throttle moment closes, now can produce the high pressure return pressure of moment, by the nethike embrane of fuel pump and parts damages, thereby cause motor to occur that fuel feeding is unstable, even leakage of oil, there is the serious potential safety hazards such as fire.
Summary of the invention
Technical problem to be solved by this invention is: a kind of stable performance, safe and reliable fuel pump for motor vehicle are provided.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of fuel pump for motor vehicle, it comprises main body, upper top and going to the bottom, upper top and go to the bottom and be bolted on the both sides of main body, between described upper top and main body, be provided with successively the first spring, spring jacking block and the second nethike embrane, the first spring and spring jacking block are connected, the front-end face of spring jacking block is pressed on the second nethike embrane, go to the bottom and main body between be provided with the first nethike embrane, in main body, offer oil-feed inner chamber, negative pressure control chamber and go out oil pocket, oil-feed inner chamber is communicated with negative pressure control chamber, negative pressure control chamber with go out oil pocket and be communicated with, the outlet port of oil-feed inner chamber is respectively equipped with by axis body and is fixed on valve block and the limit body in main body with the ingress that goes out oil pocket, valve block and limit body, in main body, be also provided with oil inlet pipe, the intersection of oil inlet pipe and main body is provided with the second spring and ball valve, one end of the second spring is fixed on the inwall of oil inlet pipe, the other end of the second spring coordinates with ball valve.
The end of described oil inlet pipe is provided with lid.
The arranged outside on described upper top had filter core.
Four angles of described main body are provided with four fixed holes that vertically run through main body.
Compared with prior art, the beneficial effect that the present invention has is:
1, in main body of the present invention, be provided with escape way, at oil-feed inner chamber with go out to be provided with negative pressure control chamber between oil pocket, negative pressure control chamber is set to buffer area, effectively prevent that motor is suddenly when dropping to low speed at a high speed, after supplying oil of carburetor reduces rapidly, fuel pressure in fuel feeding path, by the bad phenomenon of fuel pump nethike embrane pressure break, further improves the working life of fuel pump.
2, main body of the present invention adopts 4 fixing modes, by upper top with go to the bottom and be fixed in main body, guaranteed main body and above go to the bottom between steadiness and sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fuel pump for motor vehicle of the present invention;
Fig. 2 is that Fig. 1 is along B-B sectional structure schematic diagram;
Fig. 3 is that Fig. 1 opens the structural representation behind top;
In figure, be labeled as: 1-main body, the upper top of 2-, 3-goes to the bottom, 4-axis body, 5-limit body, 6-valve block, 7-the first nethike embrane, 8-the second nethike embrane, 9-spring jacking block, 10-the first spring, 11-the second spring, 12-ball valve, 13-oil inlet pipe, 14-lid, 15-crosses filter core, 16-oil-feed inner chamber, 17-negative pressure control chamber, 18-goes out oil pocket, 19-fixed hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in FIG. 1 to 3, a kind of fuel pump for motor vehicle, comprise main body 1, upper top 2 and go to the bottom 3, four angles of main body 1 are provided with four fixed holes 19 that vertically run through main body 1, upper top 2 and 3 both sides that are bolted on main body 1 of going to the bottom, the arranged outside on upper top 2 had filter core 15, between described upper top 2 and main body 1, be provided with successively the first spring 10, spring jacking block 9 and the second nethike embrane 8, the first spring 10 is connected with spring jacking block 9, the front-end face of spring jacking block 9 is pressed on the second nethike embrane 8, go to the bottom 3 and main body 1 between be provided with the first nethike embrane 7, in main body 1, offer oil-feed inner chamber 16, negative pressure control chamber 17 and go out oil pocket 18, oil-feed inner chamber 16 is communicated with negative pressure control chamber 17, negative pressure control chamber 17 with go out oil pocket 18 and be communicated with, the outlet port of oil-feed inner chamber 16 is respectively equipped with by axis body 4 and is fixed on valve block 6 and the limit body 5 in main body 1 with the ingress that goes out oil pocket 18, in main body 1, be also provided with oil inlet pipe 13, oil inlet pipe 13 is provided with the second spring 11 and ball valve 12 with the intersection of main body 1, one end of the second spring 11 is fixed on the inwall of oil inlet pipe 13, the other end of the second spring 11 coordinates with ball valve 12.
As shown in Figure 1, the end of oil inlet pipe 13 is provided with lid 14.
As shown in Figure 3, oil inlet pipe 13 is provided with the second spring 11 and ball valve 12 below, under ball valve 12 normal states, in closed condition, by oil-feed inner chamber 16 with go out the path blockade between oil pocket 18, forms simple and easy, a safe Decompression valves.
As shown in Figure 2, the oil-feed inner chamber 16 of main body 1 and go out interior valve block 6 and the limit body 5 of being equipped with respectively of oil pocket 18, valve block 6 and limit body 5 are fixed in main body 1 by axis body 4, the first spring 10, spring jacking block 9 and the second nethike embrane 8 are housed between main body 1 and upper top 2, on upper top 2, there is negative tube, be connected to motor, the negative pressure of doing work and producing by motor, drive the second nethike embrane 8 motions, by fuel oil sucking-off from oil-feed inner chamber 16, fuel oil flows into negative pressure control chamber 17 inside by valve block 6 by oil-feed inner chamber 16, then flow into out in oil pocket 18 by another valve block 6.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the above embodiment's variation, modification, all will drop within the scope of claim of the present invention.
Claims (4)
1. a fuel pump for motor vehicle, it comprises main body, upper top and going to the bottom, upper top and go to the bottom and be bolted on the both sides of main body, it is characterized in that: between described upper top and main body, be provided with successively the first spring, spring jacking block and the second nethike embrane, the first spring and spring jacking block are connected, the front-end face of spring jacking block is pressed on the second nethike embrane, go to the bottom and main body between be provided with the first nethike embrane, in main body, offer oil-feed inner chamber, negative pressure control chamber and go out oil pocket, oil-feed inner chamber is communicated with negative pressure control chamber, negative pressure control chamber with go out oil pocket and be communicated with, the outlet port of oil-feed inner chamber is respectively equipped with by axis body and is fixed on valve block and the limit body in main body with the ingress that goes out oil pocket, valve block and limit body, in main body, be also provided with oil inlet pipe, the intersection of oil inlet pipe and main body is provided with the second spring and ball valve, one end of the second spring is fixed on the inwall of oil inlet pipe, the other end of the second spring coordinates with ball valve.
2. a kind of fuel pump for motor vehicle according to claim 1, is characterized in that: the end of described oil inlet pipe is provided with lid.
3. a kind of fuel pump for motor vehicle according to claim 1, is characterized in that: the arranged outside on described upper top had filter core.
4. a kind of fuel pump for motor vehicle according to claim 1, is characterized in that: four angles of described main body are provided with four fixed holes that vertically run through main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310513973.0A CN103573499A (en) | 2013-10-25 | 2013-10-25 | Fuel pump for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310513973.0A CN103573499A (en) | 2013-10-25 | 2013-10-25 | Fuel pump for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103573499A true CN103573499A (en) | 2014-02-12 |
Family
ID=50046055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310513973.0A Pending CN103573499A (en) | 2013-10-25 | 2013-10-25 | Fuel pump for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103573499A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413077A (en) * | 1994-05-09 | 1995-05-09 | Siemens Automotive L.P. | Non-return fuel system with fuel pressure vacuum response |
| JP2001099016A (en) * | 1999-09-30 | 2001-04-10 | Denso Corp | Pressure control valve |
| CN1441160A (en) * | 2002-02-28 | 2003-09-10 | 本田技研工业株式会社 | Fuel pump assembly of vehicle |
| US20050092364A1 (en) * | 2003-10-31 | 2005-05-05 | Piolax Inc. | Cut valve with check valve |
| CN103206325A (en) * | 2013-04-23 | 2013-07-17 | 成都恒高机械电子有限公司 | Fuel pump with safety valve |
-
2013
- 2013-10-25 CN CN201310513973.0A patent/CN103573499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413077A (en) * | 1994-05-09 | 1995-05-09 | Siemens Automotive L.P. | Non-return fuel system with fuel pressure vacuum response |
| JP2001099016A (en) * | 1999-09-30 | 2001-04-10 | Denso Corp | Pressure control valve |
| CN1441160A (en) * | 2002-02-28 | 2003-09-10 | 本田技研工业株式会社 | Fuel pump assembly of vehicle |
| US20050092364A1 (en) * | 2003-10-31 | 2005-05-05 | Piolax Inc. | Cut valve with check valve |
| CN103206325A (en) * | 2013-04-23 | 2013-07-17 | 成都恒高机械电子有限公司 | Fuel pump with safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140212 |