CN204788769U - Fuel pressure detection device - Google Patents
Fuel pressure detection device Download PDFInfo
- Publication number
- CN204788769U CN204788769U CN201520445595.1U CN201520445595U CN204788769U CN 204788769 U CN204788769 U CN 204788769U CN 201520445595 U CN201520445595 U CN 201520445595U CN 204788769 U CN204788769 U CN 204788769U
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- China
- Prior art keywords
- oil
- fuel
- valve
- valve body
- cavity
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Abstract
The utility model discloses a fuel pressure detection device, including the valve body, the valve body is inside to be equipped with the cavity, and the valve body is equipped with oil inlet, oil -out and bypass outlet, and oil inlet, oil -out and bypass outlet all are linked together with the cavity, and oil inlet and oil -out are established in one side of cavity, and the opposite side of cavity is equipped with the valve, is equipped with the adjusting device who is used for adjusting the valve position on the valve. The utility model discloses can solve the problem in current the detection very conveniently. Detect under the condition of engine idling in the workshop, saved the trouble of way examination, can detect fuel oil system's under the various speed of a motor vehicle fuel delivery moreover accurately, can judge the out of order part.
Description
Technical field
The utility model relates to pick-up unit, refers to a kind of automobile fuel pressure pick-up unit especially.
Background technology
The vehicle fuel feed system of up-to-date technology is the part that failure rate is higher.Existing detection method uses fuel pressure gauge to detect system working pressure, and system working pressure will remain on a normal scope.Because the rotating speed of motor car engine and load constantly change according to the speed of a motor vehicle and travel conditions, its amount of fuel consumed also constantly is changing.Particularly without the electronically controlled fuel supply system of scavenge pipe, the fuel oil that fuel pump exports is exactly the fuel oil that engine consumes.Its principle of work is, engine control computer, according to the change of the pressure sensor signal be arranged on fuel pipe, controls the rotating speed of fuel pump, thus controls the flow that fuel pump exports fuel oil.During engine idling operation, its amount of fuel consumed is few, and engine computer controls fuel pump low-speed running, just can the pressure of keeping system normal.When the large load of engine runs up, its amount of fuel consumed will increase, if fuel pump does not improve rotating speed, the amount of fuel that fuel pump exports, is less than that engine consumes.System pressure will decline.When system pressure has small reduction, pressure transducer will send computer to the signal of pressure change, and computer will control fuel pump and improve rotating speed, improves fuel delivery, makes pressure keep normal.
If fuel pump excessive wear, fuel-pump screen blocks, and when the faults such as gasoline filter Severe blockage occur, the amount of fuel that fuel pump exports will be restricted.Now, when the large load operation of high engine speeds, although conputer controlled fuel pump improves rotating speed, the amount of fuel due to supply engine is subject to the restriction of trouble unit, cannot provide enough amount of fuel, and the power of engine will be affected.Show and be short of power, accelerate unable, Vehicle Speed such as to be restricted at the symptom.
Existing detection method is the working pressure using fuel pressure gauge to detect engine fuel feed system, and fuel pressure normally.Generally detect when engine idling operation.Be short of power if running at high speed appears in vehicle, accelerate the symptoms such as unable, fuel pressure during high vehicle speeds will be detected.Method is that fuel pressure gauge is connected on fuel pipe, by long fuel pipe, fuel gauge is fixed in pilothouse, carries out road examination.After vehicle reaches certain travel speed, observe the instruction of fuel pressure gauge, see whether fuel pressure have dropped.If fuel pressure have dropped, just fuel delivery quantity not sufficient during explanation high speed.
Existing detection method is accurate not, and it is also assess roughly that road examination detects.Such as Vehicle Speed is at 100 kilometers/hour, and detect fuel pressure normal, it is no problem just can not to ensure under the speed of 110 kilometers/hour.Road examination detects also time-consuming, also add testing cost, and can bring potential risks.
Utility model content
The utility model proposes a kind of fuel pressure pick-up unit, solve the problem that the not enough cost of accuracy of detection in prior art is high.
The technical solution of the utility model is achieved in that a kind of fuel pressure pick-up unit, comprise valve body, valve inner is provided with cavity, valve body is provided with oil-in, oil-out and bypass outlet, oil-in, oil-out are all connected with cavity with bypass outlet, oil-in and oil-out are located at one end of cavity, and the other end of cavity is provided with valve, and valve is provided with the regulating device for adjusting valve location.
Regulating device comprises spring, thimble, spring collar and adjusting pressuring knob, and adjusting pressuring knob is provided with spring collar, and adjusting pressuring knob is located on valve body, and spring collar is connected with thimble, and thimble is provided with O-ring seal, and thimble and valve link together by spring.
Valve and bypass outlet are located at the same side of cavity.
Oil-in is be fixed on the inlet valve on valve body or the opening on valve body.The delivery valve that oil-out is opening on valve body or is fixed on valve body.The delivery valve that bypass outlet is opening on valve body or is fixed on valve body.
The beneficial effects of the utility model are: can solve the problem in existing detection easily.Detect when workshop intrinsic motivation idling, eliminate the trouble of road examination, and accurately can detect the fuel delivery of fuel system under the various speed of a motor vehicle, out of order parts can be judged.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the cut-open view of an embodiment of a kind of fuel pressure pick-up unit of the utility model.
In figure, 1-valve body; 2-valve; 3-spring; 4-thimble; 5-adjusting pressuring knob; 6-spring collar; 7, O-ring seal; 8-oil-in; 9-oil-out; 10-bypass outlet.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of embodiment of the fuel pressure pick-up unit for automobile, this fuel pressure pick-up unit comprises valve body 1, valve body 1 can make the shape of the both ends open with cavity, valve body 1 is provided with oil-in 8, oil-out 9 and bypass outlet 10, oil-in 8 is in the left side of valve body 1, oil-out 9 is in the upper left side of valve body 1, vertical cavity is formed with oil-in 8, oil-in 8, oil-out 9 is all connected with cavity with bypass outlet 10, cavity is formed by the cavity of two sections of different-diameters, valve 2 is provided with at the intersection of two sections of cavities, valve 2 is provided with the regulating device for adjusting valve 2 position, the position difference of valve 2 can control bypass outlet 10 can with oil-in 8, oil-out 9 is communicated with, regulating device comprises spring 3, thimble 4, spring collar and adjusting pressuring knob 5, the shape of adjusting pressuring knob 5 is the cup-shaped of one end open, the right-hand member being opened on valve body 1 of adjusting pressuring knob 5 connects, adjusting pressuring knob 5 is established not opening centre, one end be provided with spring collar, adjusting pressuring knob 5 is located on valve body 1, spring collar is connected with thimble 4, and thimble 4 is provided with O-ring seal 7, and thimble 4 and valve 2 link together by spring 3.
Oil-in 8 is for being fixed on the inlet valve on valve body 1 or the opening on valve body 1.The delivery valve that oil-out 9 is opening on valve body 1 or is fixed on valve body 1.The delivery valve that bypass outlet 10 is opening on valve body 1 or is fixed on valve body 1.
When the utility model uses, fuel oil flows into from oil-in 8, flows out, be not affected from oil-out 9.Flow into, fuel oil and the engine oil tube of outflow communicate.When engine idling operation, fuel system will keep normal working pressure.When adjusting pressuring knob 5 turns clockwise on earth, drive thimble 4 to move inward, promote spring 3 and valve 2 is closed.Be rotated counterclockwise adjusting pressuring knob 5, will drive thimble 4 outwards movement, valve 2 will be opened.Fuel oil under the effect of the pressure, is flowed out from bypass outlet 10 by valve 2.Fuel pressure on the left of valve 2, the pressure of meeting and spring 3 keeps balance.Adjusting pressuring knob 5 is rotated counterclockwise more, and it is larger that valve 2 is opened, and fuel oil flows out bypass outlet more than 10.By in fuel pressure/flowmeter F831 and the utility model access fuel system, the utility model first in off position (adjusting pressuring knob 5 turns clockwise on earth).Starting engine, observes tensimeter and the flowmeter of F831.When the utility model is closed, its bypass outlet 10 does not have fuel oil and flows out, and now by the fuel oil of F831 flowmeter, is exactly that engine consumes.Owing to consuming little amount of fuel during engine idle, flow reading be can't see by flowmeter.Slowly rotate adjusting pressuring knob 5 counterclockwise, observe the pressure gauge reading change of F831, until pressure drop 0.2 ~ 0.3 kilogram (can not engine idling operation be affected) simultaneously.Computer receives the Pressure Drop low signal of pressure transducer, in order to the normal working pressure of keeping system, will control fuel pump and increase speed, and improves fuel delivery.Along with opening gradually of adjusting pressuring knob 5, engine computer will control fuel pump and increase speed gradually, improves fuel delivery gradually, realizes the fuel feeding situation under the different speed of a motor vehicle of simulation.At this moment can see that bypass outlet 10 of the present utility model has fuel oil to flow out, the meter readings of F831 can increase simultaneously.The fuel oil that fuel pump exports all flows through the flowmeter of F831, and flow number is now exactly the maximum fuel delivery of fuel system.By fuel oil of the present utility model first supply engine, unnecessary fuel oil just can flow out bypass outlet 10 of the present utility model, can not affect the normal operation of engine.
The utility model can solve the problem in existing detection easily.Detect when workshop intrinsic motivation idling, eliminate the trouble of road examination, and accurately can detect the fuel delivery of fuel system under the various speed of a motor vehicle, out of order parts can be judged.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a fuel pressure pick-up unit, comprise valve body, it is characterized in that: described valve inner is provided with cavity, described valve body is provided with oil-in, oil-out and bypass outlet, described oil-in, oil-out and bypass outlet are all connected with described cavity, described oil-in and described oil-out are located at the side of described cavity, and the opposite side of described cavity is provided with valve, and described valve is provided with the regulating device for adjusting valve location.
2. a kind of fuel pressure pick-up unit according to claim 1, it is characterized in that: described regulating device comprises spring, thimble, spring collar and adjusting pressuring knob, described adjusting pressuring knob is provided with spring collar, described adjusting pressuring knob is located on described valve body, described spring collar is connected with described thimble, described thimble is provided with O-ring seal, and described thimble and described valve link together by described spring.
3. a kind of fuel pressure pick-up unit according to claim 1, is characterized in that: described valve and described bypass outlet are located at the same side of described cavity.
4. a kind of fuel pressure pick-up unit according to claim 1, is characterized in that: described oil-in is be fixed on the inlet valve on described valve body or the opening on described valve body.
5. a kind of fuel pressure pick-up unit according to claim 1, is characterized in that: the delivery valve that described oil-out is opening on described valve body or is fixed on described valve body.
6. a kind of fuel pressure pick-up unit according to claim 1, is characterized in that: the delivery valve that described bypass outlet is opening on described valve body or is fixed on described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445595.1U CN204788769U (en) | 2015-06-24 | 2015-06-24 | Fuel pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445595.1U CN204788769U (en) | 2015-06-24 | 2015-06-24 | Fuel pressure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204788769U true CN204788769U (en) | 2015-11-18 |
Family
ID=54528789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520445595.1U Expired - Fee Related CN204788769U (en) | 2015-06-24 | 2015-06-24 | Fuel pressure detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204788769U (en) |
-
2015
- 2015-06-24 CN CN201520445595.1U patent/CN204788769U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180624 |