CN1757918A - High pressure liquid pump - Google Patents
High pressure liquid pump Download PDFInfo
- Publication number
- CN1757918A CN1757918A CN 200510019704 CN200510019704A CN1757918A CN 1757918 A CN1757918 A CN 1757918A CN 200510019704 CN200510019704 CN 200510019704 CN 200510019704 A CN200510019704 A CN 200510019704A CN 1757918 A CN1757918 A CN 1757918A
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- Prior art keywords
- pump
- elastic diaphragm
- pressure
- plunger
- body shell
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Abstract
A high-pressure liquid pump for the fuel system of IC engine is composed of a plunger pump and a pressure converting unit which is a container divided into two cavities by an elastic diaphragm. One cavity is hydraulic oil cavity communicated with plunger pump. Another cavity is a pumping pressure cavity for sucking gasoline in and pumping it out under the action of plunger pump which makes said elastic diaphragm to do reciprocating movement. Its advantages are no leakage and low cost.
Description
Technical field:
The present invention relates to a kind of high-pressure service pump, especially a kind of pressure liquid pump of internal combustion engine fuel system.
Background technique:
In the internal-combustion engine liquid fuel high-pressure service pump series of prior art, all are the plunger pumps that constitute by plunger, spring, cam, the pump housing.Wherein the fuel system high-pressure diesel pump of diesel engine can only work in the diesel oil of lubricity, and non-lubricity liquid such as water, alcohol, kerosene, gasoline etc. then can not use.
Summary of the invention:
The object of the present invention is to provide a kind of reliable performance, possess the same realization compression ignites such as gasoline, kerosene, alcohol that can spray into to the cylinder inner high voltage of diesel engine plunger pump and maybe will have gasoline engine refitting now and spray into gasoline, electrical spark is lighted simultaneously, to replace complex structure, electronically controlled fuel injection system that cost is high, fundamentally reduce the exhaust emission of petrol engine, overall performances such as the thermal efficiency are reached and surpass the diesel engine level.
The scheme that the object of the invention realizes is: having now by plunger, spring, cam, set up the pressure conversion device of a similar diaphragm pump on the plunger pump basis that the pump housing constitutes, this conversion equipment is by accompanying the corrugated tube shape elastic diaphragm that a plane ripples shape of being made by metal or nonmetal paper tinsel or an end become sealing between the relative mouth end of two half of body shells, it is fastening by sieve silk two halves body shell to be connected, make it to constitute the whole container that is divided into two cavitys in by elastic diaphragm, one of them cavity is the pump pressure cavity of liquid fuel, offer oil inlet hole and oil outlet on the pump pressure cavity body shell wall on one side, advance, oil outlet is to reverse stop valve is housed respectively, between the axis part of elastic diaphragm and the body shell inwall barrier film Returnning spring is housed, another cavity is a hydraulic fluid chamber, and communicates with the plunger pump chamber.Corresponding barrier film Returnning spring position is provided with the barrier film spacing point that resets.
Working principle of the present invention: be full of gasoline or other liquid fuels in the pump pressure cavity, the plunger pump chamber reaches in the hydraulic fluid chamber that communicates with it and is full of hydraulic oil.The plunger pump cam impels plunger to make axially reciprocating by the machine power transmission.When plunger dwindles when motion towards pump chamber, the hydraulic oil in the pump chamber is pressed in the hydraulic fluid chamber, forces the distortion of elastic diaphragm bulging, and the hydraulic fluid chamber volume diminishes, and gasoline or other liquid fuel pressurizeds are pushed the oil outlet reverse stop valve open and discharged; Plunger is when the swivel motion, under the return spring pressure effect, hydraulic fluid chamber produces negative pressure, the elastic diaphragm returning position, the big generation pull of vacuum of pump pressure cavity volume phase strain, outer gasoline or other liquid fuels of oil inlet hole pushed the oil inlet hole reverse stop valve open under atmospheric pressure or pressurization, fill gasoline in pump pressure cavity.
Advantage of the present invention: gasoline or other liquid fuels produce volume-variation at pump pressure cavity by elastic diaphragm distortion and carry, and are to obtain pump pressure kinetic energy, the nothing leakage at the pump pressure cavity of the moving link that not have to rub relatively.The pump pressure kinetic energy of pump pressure cavity is to be converted into the hydraulic pressure energy by mechanical energy by plunger pump, transmission obtains through elastic diaphragm, the relative two surface pressure phase isoequilibriums of elastic diaphragm, be free deformation, can not destroy because of the working pressure height, so can satisfy the required jet pressure of internal-combustion engine " compression ignite " fully in the continuous operation of existing hydraulics Maximum operating pressure state.Because plunger pump can be used the hydraulic oil higher than diesel oil viscosity, it is better lubricated that plunger can be obtained, and hydraulic oil does not consume substantially in the plunger pump, and working life is longer than existing diesel oil high-pressure service pump.
Description of drawings:
Fig. 1 is the structure sectional view of first embodiment of the invention.
Fig. 2 is the structure sectional view of another embodiment of the present invention.
Embodiment:
As shown in Figure 1, the present embodiment pressure liquid pump is made up of plunger pump and pressure conversion device two-part.Constitute plunger pump by plunger 1, spring 14, cam 13, the pump housing.Pressure conversion device is to constitute shell by two half of body shells 1, accompanying plane ripples shape elastic diaphragm 3 backs of being made by metal foil between two individual shell 1 relative mouths are held connects two individual shells 1 fastening with sieve silk 8, make it to constitute the whole container that is divided into two cavitys in by elastic diaphragm 3, one of them cavity is the pump pressure cavity 7 of liquid fuel, offer oil inlet hole 2 and oil outlet 6 on this pump pressure cavity 7 body shell 1 wall on one side, reverse stop valve 17,5 is housed respectively in oil inlet hole 2 and the oil outlet 6; Another cavity is a hydraulic fluid chamber 16, and this hydraulic fluid chamber 16 communicates with plunger pump chamber 10 by oil-piping 9, is provided with the barrier film limit dais 15 that resets at hydraulic fluid chamber 16 body shell 1 wall on one side.Between the axis part of elastic diaphragm 3 and body shell 1 inwall barrier film Returnning spring 4 is housed.
As shown in Figure 2, present embodiment and Fig. 1 embodiment's difference is that folded elastic diaphragm 3 is the corrugated tube shape elastic diaphragm 3 that an end becomes sealing between the relative mouth end of the individual shell of pressure conversion device two 1; The limit dais 15 that resets is arranged in the hydraulic fluid chamber 16.
Claims (3)
1, a kind of pressure liquid pump, by plunger, spring, cam, the pump housing constitutes plunger pump, the pump chamber (10) that it is characterized in that plunger pump is by oil-piping (9) cut-in pressure conversion equipment, this pressure conversion device is by accompanying the corrugated tube shape elastic diaphragm (3) that a plane ripples shape of being made by metal or nonmetal paper tinsel or an end become sealing between the relative mouth end of two individual shells (1), connect two individual shells (1) fastening with sieve silk (8), make by elastic diaphragm (3) and to be separated into pump pressure cavity (7) and hydraulic fluid chamber (16) in the body shell (1), on pump pressure cavity (7) body shell (1) wall on one side, offer oil inlet hole (2) and oil outlet (6), advance, oil outlet (2, reverse stop valve (17 is housed respectively 6), 5), the axis part of elastic diaphragm (3) and reverse stop valve (5,17) between body shell (1) inwall of an end barrier film Returnning spring (4) is housed.
2, according to the described pressure liquid pump of claim 1, it is characterized in that elastic diaphragm (3) is a plane ripples shape, be provided with the barrier film limit dais (15) that resets at hydraulic fluid chamber (16) body shell (16) wall on one side.
3, according to the described pressure liquid pump of claim 1, it is characterized in that elastic diaphragm (3) is the corrugated tube shape that an end becomes sealing, the limit dais that resets is arranged in the hydraulic fluid chamber (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510019704 CN1757918A (en) | 2005-10-26 | 2005-10-26 | High pressure liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510019704 CN1757918A (en) | 2005-10-26 | 2005-10-26 | High pressure liquid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1757918A true CN1757918A (en) | 2006-04-12 |
Family
ID=36703437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510019704 Pending CN1757918A (en) | 2005-10-26 | 2005-10-26 | High pressure liquid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1757918A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN103206281A (en) * | 2013-01-30 | 2013-07-17 | 祥天控股（集团）有限公司 | Oil line system of miniature aerodynamic engine |
| CN110088472A (en) * | 2016-12-20 | 2019-08-02 | 费森尤斯医疗护理德国有限责任公司 | The positive displacement pump and haemodialysis equipment and its method of control of medical use liquid |
| CN110755958A (en) * | 2019-11-08 | 2020-02-07 | 苏宇航 | Smoke collecting and processing device for thermal power |
| CN117108491A (en) * | 2023-10-20 | 2023-11-24 | 优捷特环保科技有限公司 | Liquid drive type compressor based on greasy dirt isolation |
-
2005
- 2005-10-26 CN CN 200510019704 patent/CN1757918A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN103206281A (en) * | 2013-01-30 | 2013-07-17 | 祥天控股（集团）有限公司 | Oil line system of miniature aerodynamic engine |
| CN110088472A (en) * | 2016-12-20 | 2019-08-02 | 费森尤斯医疗护理德国有限责任公司 | The positive displacement pump and haemodialysis equipment and its method of control of medical use liquid |
| CN110755958A (en) * | 2019-11-08 | 2020-02-07 | 苏宇航 | Smoke collecting and processing device for thermal power |
| CN117108491A (en) * | 2023-10-20 | 2023-11-24 | 优捷特环保科技有限公司 | Liquid drive type compressor based on greasy dirt isolation |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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 |