CN204175484U - The fuel-displaced lead-jetting device of pump core - Google Patents
The fuel-displaced lead-jetting device of pump core Download PDFInfo
- Publication number
- CN204175484U CN204175484U CN201420578495.1U CN201420578495U CN204175484U CN 204175484 U CN204175484 U CN 204175484U CN 201420578495 U CN201420578495 U CN 201420578495U CN 204175484 U CN204175484 U CN 204175484U
- Authority
- CN
- China
- Prior art keywords
- oil
- injection
- pump core
- fuel
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the fuel-displaced lead-jetting device of a kind of pump core, comprise housing, fuel pump is provided with in housing, pump core is provided with in described fuel pump, housing lower end is provided with housing filler opening, and fuel pump upper end is provided with pump core oil outlet, pump core injection mouth, and lower end is provided with pump core filler opening, pump core injection mouth is connected jet pipe, is provided with lead-jetting device between jet pipe and housing filler opening.Lead-jetting device can be moved on on pump core like this, avoid the working connection after pump core oil outlet, thus the back pressure produced can not be impacted working connection, like this stability of fuel oil pump assembly to engine oil is increased, the oil transportation working connection life-span is increased.
Description
Technical field
The utility model relates to a kind of lead-jetting device, is specifically related to a kind of fuel-displaced lead-jetting device of pump core of automobile fuel pump.
Background technique
Fuel oil pump assembly is supplied to motor car engine fuel oil, to produce automobile power.Fuel pump operationally can produce amount of heat, and in housing fuel oil can play the effect of cooling to pump-type.Fuel pump is extracted the oil in housing out rear portion and is used to motor, and unnecessary gets back to inside housing.Fuel oil in such circulation housing only can be fewer and feweri, and final fuel pump periphery will no longer be wrapped up by fuel oil, thus loses cooling action.And fuel oil unnecessary after increasing lead-jetting device was brought more fuel oil into and is entered housing after entering injection, even if make the fuel pump oilcan body taken out in housing still can keep full oil condition always, cool fuel pump.The key point that lead-jetting device will play a role is the size of injection oil outlet, and the less then ejector capacity of injection oil outlet is stronger.But when injection oil outlet crosses osculum, just cannot get rid of runner in time when motor is got back in housing with rear unnecessary fuel oil, thus in runner, produce extra back pressure.The oil circuit operation irregularity that the generation of this burst of back pressure will make pump core oil outlet later, the fuel oil that the pressure increase of oil circuit is then supplied to motor car engine is unstable.The stressed increase of pipeline, lifetime.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is the fuel-displaced lead-jetting device of pump core providing a kind of back pressure can not impact working connection.
For achieving the above object, the utility model provides following technological scheme: the fuel-displaced lead-jetting device of a kind of pump core, comprise housing, be provided with fuel pump in described housing, be provided with pump core in described fuel pump, described housing lower end is provided with housing filler opening, described fuel pump upper end is provided with pump core oil outlet, pump core injection mouth, lower end is provided with pump core filler opening, and described pump core injection mouth is connected jet pipe, is provided with lead-jetting device between described jet pipe and described housing filler opening.
Adopt technique scheme, lead-jetting device is moved on on pump core, avoid the working connection after pump core oil outlet, thus the back pressure produced can not be impacted working connection.
The utility model is arranged further: described lead-jetting device comprises injection housing, be provided with injection in described injection housing and go out oil pocket, described injection goes out oil pocket correspondence and is provided with injection oil suction chamber, described injection oil suction chamber and described injection go out between oil pocket to be provided with oil-feed buffer cavity, and described oil-feed buffer cavity is communicated in described housing filler opening.
Adopt technique scheme, the oil circuit of injection oil outlet, housing, housing filler opening is communicated.
The utility model is arranged further: described injection goes out in oil pocket to be provided with injection oil outlet, and the connecting end of described injection oil outlet is engaged on described jet pipe, and the end face of described injection oil outlet stretches out the inwall of described oil-feed buffer cavity.
Adopt technique scheme, make pump core injection mouth connect injection oil outlet by jet pipe, allow injection oil out directly drive the oil in oil-feed buffer cavity to enter injection oil suction chamber.
The utility model is arranged further: described injection oil outlet comprises the buffer channel that aperture is less than jet pipe aperture, described buffer channel is communicated with described housing filler opening and is provided with injection passage, and the aperture of described injection passage is less than the aperture of described buffer channel.
Adopt technique scheme, when the oil in jet pipe enters buffer channel, the back pressure of oil gathers increase, when oil enters injection passage again, makes the back pressure gathered force the oil in injection passage to produce and accelerates, thus form the injection of oil.
The utility model is arranged further: the described injection oil suction chamber described in injection passage correspondence, the passage of described injection oil suction chamber to be cross section be taper.
Adopt technique scheme, the oil entering injection oil suction chamber is diffused in housing rapidly, and to pumping up the effect of cooling, housing then can keep full oil condition always.
The fuel-displaced lead-jetting device of pump core according to claim 5, is characterized in that: the oil inlet end aperture of described injection oil suction chamber is less than the oil outlet end aperture of described injection oil suction chamber.
Adopt technique scheme, make the oil entering injection oil suction chamber accelerate to diffuse to rapidly in housing.
The utility model is arranged further: described injection oil suction chamber communicates with described pump core filler opening.
Adopt technique scheme, the oil that injection is come in again enters pump core supply engine and uses, and can allow again oil housing Inner eycle coolant pump core again.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model embodiment;
Fig. 2 is the lead-jetting device structural drawing of the utility model embodiment;
Fig. 3 is the injection mouth structure figure of the utility model embodiment.
Embodiment
As Figure 1-3, the utility model discloses the fuel-displaced lead-jetting device of a kind of pump core, comprise housing 1, be provided with fuel pump 2 in housing 1, be provided with pump core 21 in fuel pump, housing 1 lower end is provided with housing filler opening 11, fuel pump 2 upper end is provided with pump core oil outlet 22, pump core injection mouth 23, lower end is provided with pump core filler opening 24, and pump core injection mouth 23 is connected jet pipe 3, is provided with lead-jetting device 4 between jet pipe 3 and housing filler opening 11.Lead-jetting device 4 can be moved on on pump core 21 like this, avoid the working connection after pump core oil outlet 22, thus the back pressure produced can not be impacted working connection.
Lead-jetting device 4 comprises injection housing 41, be provided with injection in injection housing 1 and go out oil pocket 41, injection goes out oil pocket 41 correspondence and is provided with injection oil suction chamber 42, and injection oil suction chamber 42 and injection go out between oil pocket 41 to be provided with oil-feed buffer cavity 43, and oil-feed buffer cavity 43 is communicated in housing filler opening 11.Can make like this injection go out oil pocket 43, housing 1, housing filler opening 11 oil circuit communicate.
Injection goes out in oil pocket 41 to be provided with injection oil outlet 5, and the connecting end of injection oil outlet 5 is engaged on jet pipe 3, and the end face of injection oil outlet 5 stretches out the inwall of oil-feed buffer cavity 51.Make pump core injection mouth 23 connect injection oil outlet by jet pipe 3 like this, allow injection oil out directly drive the oil of oil-feed buffer cavity 43 li to enter injection oil suction chamber 42.
Injection oil outlet 5 comprises the buffer channel 51 that aperture is less than jet pipe aperture, and buffer channel 51 is communicated with housing filler opening 11 and is provided with injection passage 52, and the aperture of injection passage 52 is less than the aperture of buffer channel 51.When the oil of jet pipe 3 li enters buffer channel 51, the back pressure of oil gathers increase, when oil enters injection passage 52 again, makes the back pressure gathered force the oil of 51 li, injection passage to produce and accelerates, thus form the injection of oil.
The corresponding injection oil suction chamber 42 of injection passage 51, injection oil suction chamber 42 for cross section be the passage of taper.Make the oil entering injection oil suction chamber 42 diffuse to rapidly in housing 1 like this, and to pumping up the effect of cooling, housing 1 can keep full oil condition always.
The oil inlet end aperture of injection oil suction chamber 42 is less than the oil outlet end aperture of injection oil suction chamber 42.The oil entering injection oil suction chamber 42 is made to accelerate to diffuse to rapidly in housing 1 like this.
Injection oil suction chamber 42 communicates with pump core filler opening 24.The oil making injection come in so again enters pump core 21 supply engine and uses, and can allow again oil housing 1 Inner eycle coolant pump core 21 again.
Working principle of the present utility model: fuel pump is from oil suction inside housing 1, and fuel oil sucks from pump core filler opening 24.A part is gone out from pump core oil outlet 22 and is supplied to motor car engine use, and a part sprays from pump core injection mouth 23, through jet pipe 3, sprays from injection oil outlet.Fuel oil flow at high speed when housing filler opening 11 of ejection, thus drive the fuel oil outside housing 1 to enter housing 1 with the fuel oil of flowing from injection oil suction chamber 42, on the one hand pump core is cooled.From housing 1, be introduced into the unnecessary fuel oil from the sucking-off of pump core 21 oil outlet, housing 1 can keep full oil condition always.
Claims (7)
1. the fuel-displaced lead-jetting device of pump core, it is characterized in that: comprise housing, fuel pump is provided with in described housing, pump core is provided with in described fuel pump, described housing lower end is provided with housing filler opening, and described fuel pump upper end is provided with pump core oil outlet, pump core injection mouth, and lower end is provided with pump core filler opening, described pump core injection mouth is connected jet pipe, is provided with lead-jetting device between described jet pipe and described housing filler opening.
2. the fuel-displaced lead-jetting device of pump core according to claim 1, it is characterized in that: described lead-jetting device comprises injection housing, be provided with injection in described injection housing and go out oil pocket, described injection goes out oil pocket correspondence and is provided with injection oil suction chamber, described injection oil suction chamber and described injection go out between oil pocket to be provided with oil-feed buffer cavity, and described oil-feed buffer cavity is communicated in described housing filler opening.
3. the fuel-displaced lead-jetting device of pump core according to claim 2, it is characterized in that: described injection goes out in oil pocket to be provided with injection oil outlet, the connecting end of described injection oil outlet is engaged on described jet pipe, and the end face of described injection oil outlet stretches out the inwall of described oil-feed buffer cavity.
4. the fuel-displaced lead-jetting device of pump core according to claim 3, it is characterized in that: described injection oil outlet comprises the buffer channel that aperture is less than jet pipe aperture, described buffer channel is communicated with described housing filler opening and is provided with injection passage, and the aperture of described injection passage is less than the aperture of described buffer channel.
5. the fuel-displaced lead-jetting device of pump core according to claim 4, is characterized in that: the described injection oil suction chamber described in injection passage correspondence, the passage of described injection oil suction chamber to be cross section be taper.
6. the fuel-displaced lead-jetting device of pump core according to claim 5, is characterized in that: the oil inlet end aperture of described injection oil suction chamber is less than the oil outlet end aperture of described injection oil suction chamber.
7. the fuel-displaced lead-jetting device of pump core according to claim 6, is characterized in that: described injection oil suction chamber communicates with described pump core filler opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420578495.1U CN204175484U (en) | 2014-10-09 | 2014-10-09 | The fuel-displaced lead-jetting device of pump core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420578495.1U CN204175484U (en) | 2014-10-09 | 2014-10-09 | The fuel-displaced lead-jetting device of pump core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175484U true CN204175484U (en) | 2015-02-25 |
Family
ID=52564297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420578495.1U Expired - Fee Related CN204175484U (en) | 2014-10-09 | 2014-10-09 | The fuel-displaced lead-jetting device of pump core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482818A (en) * | 2021-08-18 | 2021-10-08 | 重庆万力联兴实业(集团)有限公司 | Near-far end injection assembly of vehicle fuel pump |
-
2014
- 2014-10-09 CN CN201420578495.1U patent/CN204175484U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482818A (en) * | 2021-08-18 | 2021-10-08 | 重庆万力联兴实业(集团)有限公司 | Near-far end injection assembly of vehicle fuel pump |
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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 |
Granted publication date: 20150225 Termination date: 20181009 |
|
| 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: 20150225 Termination date: 20181009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |