CN101705895B - Oil coke slurry ejector for compression ignition engine - Google Patents
Oil coke slurry ejector for compression ignition engine Download PDFInfo
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- CN101705895B CN101705895B CN2009102385309A CN200910238530A CN101705895B CN 101705895 B CN101705895 B CN 101705895B CN 2009102385309 A CN2009102385309 A CN 2009102385309A CN 200910238530 A CN200910238530 A CN 200910238530A CN 101705895 B CN101705895 B CN 101705895B
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- needle valve
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Abstract
The invention discloses an oil coke slurry ejector for a compression ignition engine, which comprises an ejector body, a lubricating oil inlet port, a lubricating oil outlet port, a needle valve body and a needle valve, wherein the two sides of both the ejector body and the needle valve body are symmetrically distributed with lubricating oil passages, the needle valve is inserted into the needle valve body and a lubricating oil cavity is preserved in the needle valve body; the pressure-bearing surface of the needle valve is an annular surface, micro solid particles accumulated in a gentle area in an oil tank cannot contact the annular pressure-bearing surface of the needle valve easily and therefore high-pressure oil coke slurry can act on the needle valve smoothly; and the front end of the needle valve is a sealing conical surface and the tip of the most front part of the sealing conical surface is inserted into an ejection hole to increase the clearance in the ejection hole. When the ejector works, a small part of oil coke slurry in the oil tank flows into the lubricating cavity from a clearance between the needle valve body and the needle valve, then flows back to a lubricating oil storage after being carried out by the constantly circulating lubricating oil and finally flows into the lubricating oil again after sedimentation and filtration. Thus, the needle valve moves smoothly, the service life of the needle valve is prolonged effectively, and the rate of failure occurrence is reduced.
Description
Technical field
The present invention relates to field of internal combustion engine, is a kind of oil coke slurry ejector that is used for compression ignition internal combustion engine specifically.
Background technique
The petroleum reserves of China have only the world per capita 8%, and about 50% in the middle of the current every year required crude oil depends on overseas import, will reach 65% to this numeral of the year two thousand twenty.In order to optimize China's fuel structure, reduce dependence to the import fuel oil, the research of novel alternative fuel is subjected to unprecedented attention, and various possible approach are all being tried to explore.The oil coke slurry is that the final by-product petroleum coke of Petroleum refining is ground into small solid particle, mix with certain proportion diesel oil, add some effective ingredients again, be prepared into a kind of New-type fuel of similar fuel oil by certain technology, what its exploitation as the compression ignition internal combustion engine alternative fuel also had been subjected to shows great attention to.
The operating time of tradition axial needle type injector sharply reduces, and rate of fault significantly improves.Its main cause is in the oil coke slurry the small solid particle of a large amount of petroleum cokes to be arranged, and is easy to the pintle nozzle match-ing parts gap of traditional axial needle type injector is filled up, and makes spray effect worsen, and the needle valve movement difficulty causes the rough even auto extinguishing of internal combustion engine.The high pressure oil coke slurry that transports by high pressure oil pump enters oil holding slot in the needle-valve body, spray into the firing chamber via spray orifice, but also have sub-fraction to enter fitting surface by the matching gap of needle-valve and needle-valve body, cause the small solid particle of fitting surface to pile up more and more, make very smooth needle-valve of original cooperation and needle-valve body surface friction drag increasing, cause the needle valve movement difficulty.In addition, high pressure oil coke slurry arrives milder place in the needle-valve body oil holding slot, small solid particle in the oil coke slurry will deposit buildup, along with accumulating amount is more and more, last needle-valve conical ring pressure-bearing surface attached to traditional axial needle type injector, the effect of high pressure oil coke slurry causes needle-valve not opened less than needle-valve conical ring pressure-bearing surface.The axonometer and the spray orifice annular space of tradition axial needle type injector needle-valve head are very little, when high pressure oil coke slurry passes through, also have small solid particle and pile up in the gap, cause jet atomization bad, even the oil dripping phenomenon occurs, make internal combustion engine rough.
Summary of the invention
Be applied to compression ignition internal combustion engine for oil coke being starched this novel alternative fuel, solve the problems referred to above that traditional axial needle type injector exists, characteristic according to the oil coke slurry fuel, a kind of oil coke slurry ejector that is used for compression ignition internal combustion engine has been proposed, it can prevent effectively that small solid particle stops up the pintle nozzle match-ing parts gap in the oil coke slurry, prolongs its operating life.
A kind of oil coke slurry ejector that is used for compression ignition internal combustion engine of the present invention comprises injector body, needle-valve body, needle-valve, lubricant oil oil-feed interface, lubricant oil oil out port, high pressure oil coke slurry oil inlet pipe, locking nut.
The injector body both sides are be threaded lubricant oil oil-feed interface and lubricant oil oil out port of center line symmetry with high pressure oil coke slurry inlet oil inlet pipe, and needle-valve body is threaded with the injector body front end by locking nut.
Needle-valve is inserted in the needle-valve body, and the needle-valve front end is a sealing cone, in the sealing cone rear design pressure-bearing surface is arranged; The sealing cone of needle-valve front end closely contacts with needle-valve body, and the forefront of sealing cone is most advanced and sophisticated to be inserted in the spray orifice.The needle-valve body middle part has lubricant reservoir, and the needle-valve body front end has oil holding slot.
Bilateral symmetry is distributed with injector body lubricant oil oil inlet passage, injector body lubricant oil oil discharge passage and needle-valve body lubricant oil oil inlet passage, needle-valve body lubricant oil oil discharge passage in injector body and the needle-valve body; The two ends of injector body lubricant oil oil inlet passage communicate with lubricant oil oil-feed interface and needle-valve body lubricant oil oil inlet passage respectively, and needle-valve body lubricant oil oil inlet passage communicates with the needle-valve body lubricant reservoir; The two ends of injector body lubricant oil oil discharge passage communicate with lubricant oil oil out port and needle-valve body lubricant oil oil discharge passage respectively, and needle-valve body lubricant oil oil discharge passage communicates with the needle-valve body lubricant reservoir.
The invention has the advantages that:
1, the most advanced and sophisticated spray orifice that directly inserts of oil coke slurry ejector needle-valve forefront conical surface of the present invention has increased the spray orifice internal clearance, can not cause that small solid particle stops up the phenomenon of spray orifice, and the tip taper face also plays certain atomizing effect simultaneously;
2, the pressure-bearing surface of oil coke slurry ejector needle-valve of the present invention is designed to the toroidal surface perpendicular to the needle-valve axis, makes the small solid particle that is deposited in the oil holding slot flat zone be difficult to touch needle-valve annulus pressure-bearing surface, and high pressure oil coke slurry just can act on needle-valve smoothly;
3, there is sub-fraction oil coke slurry to enter lubricant reservoir during oil coke slurry ejector proper functioning of the present invention by the matching gap of needle-valve and needle-valve body, the lubricant oil that constantly circulates is taken the oil coke slurry that flows into out of, prevents that the matching gap that small solid particle is deposited in needle-valve and needle-valve body from causing the needle valve movement difficulty;
4, oil coke slurry ejector of the present invention can prolong operating life effectively, reduces rate of breakdown.
Description of drawings
Fig. 1 is the oil coke slurry ejector overall schematic;
Fig. 2 is the oil coke slurry ejector top plan view;
Fig. 3 is an oil coke slurry ejector needle-valve body master pseudosection.
1-injector body 2-lubricant oil oil-feed interface 3-lubricant oil oil out port
4-needle-valve body 5-needle-valve 6-high pressure oil coke slurry oil inlet pipe
7-locking nut 101-spring 102-injector body lubricant oil oil inlet passage
103-injector body lubricant oil goes out 104-injector body high pressure oil coke slurry passage 401-needle-valve body lubricant oil oil inlet passage
The oil passage
The fuel-displaced 403-needle-valve body of 402-needle-valve body lubricant oil lubricant reservoir 404-needle-valve body high pressure oil coke slurry passage
Passage
405-spray orifice 406-oil holding slot 501-needle-valve pressure-bearing surface
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
A kind of oil coke slurry ejector that is used for compression ignition internal combustion engine of the present invention as Fig. 1, Fig. 2, shown in Figure 3, comprises injector body 1, lubricant oil oil-feed interface 2, lubricant oil oil out port 3, needle-valve body 4, needle-valve 5 and high pressure oil coke slurry oil inlet pipe 6, locking nut 7.
Injector body 1 both sides be threaded lubricant oil oil-feed interface 2 and lubricant oil oil out port 3 of center line symmetry with high pressure oil coke slurry oil inlet pipe 6, and it is vertical that lubricant oil oil-feed interface 2 and the high pressure oil coke on lubricant oil oil out port 3 and the injector body 1 are starched oil inlet pipe 6.Needle-valve body 4 is threaded with injector body 1 front end by locking nut 7, and needle-valve 5 is inserted in the needle-valve body 4.
Needle-valve body 4 middle parts have lubricant reservoir 403, and front end has oil holding slot 406.Described needle-valve body lubricant reservoir 403 is a cylindrical cavity, the diameter of needle-valve body lubricant reservoir 403 is greater than needle-valve 5 diameters, it is mobile smooth and easy to be convenient to lubricant oil, constantly washes the surface of needle-valve 5, prevents that small solid particle is deposited in the matching gap of needle-valve 5 and needle-valve body 4.
Injector body 1 is distributed with injector body lubricant oil oil inlet passage 102, injector body lubricant oil oil discharge passage 103 and needle-valve body lubricant oil oil inlet passage 401, needle-valve body lubricant oil oil discharge passage 402 with needle-valve body 4 interior bilateral symmetry.The two ends of injector body lubricant oil oil inlet passage 102 communicate with lubricant oil oil-feed interface 2 and needle-valve body lubricant oil oil inlet passage 401 respectively, and needle-valve body lubricant oil oil inlet passage 401 communicates with needle-valve body lubricant reservoir 403.The two ends of injector body lubricant oil oil discharge passage 103 communicate with lubricant oil oil out port 3 and needle-valve body lubricant oil oil discharge passage 402 respectively, and needle-valve body lubricant oil oil discharge passage 402 communicates with needle-valve body lubricant reservoir 403.
Described needle-valve 5 front end taper angle theta are 60 ° sealing cone, closely contact with needle-valve body 4, and the forefront of sealing cone is most advanced and sophisticated to be inserted in the spray orifice 405, because most advanced and sophisticated gap with spray orifice 405 formation is bigger, small solid particle in the oil coke slurry can not stop up spray orifice 405, and after the oil coke slurry is ejected into the tip, oil coke slurry impact tip surface failure of rock, thus can realize the atomizing that oil coke is starched.
Needle-valve pressure-bearing surface 501 is the toroidal surface perpendicular to needle-valve 5 medial axis, is beneficial to high pressure oil coke slurry and can acts on needle-valve pressure-bearing surface 501 smoothly, gives needle-valve 5 with propagation of pressure, and needle-valve 5 is opened.Described needle-valve pressure-bearing surface 501 does not extend in the oil holding slot 406, make the space of oil holding slot 406 strengthen, therefore the high pressure oil coke slurry that is flowed in the oil holding slot 406 by injector body high pressure oil coke slurry path 10 4 and needle-valve body high pressure oil coke slurry passage 404 just can act on needle-valve pressure-bearing surface 501 more effectively, be beneficial to open needle-valve 5, as Fig. 3.
As shown in Figure 3, high pressure oil coke slurry flows into injector body high pressure oil coke slurry path 10 4 by injector body high pressure oil coke slurry oil inlet pipe 6, flow in the oil holding slot 406 through needle-valve body high pressure oil coke slurry passage 404 again, oil holding slot 406 pressure are raise, when above sparger spring 101 preload pressures that act on needle-valve pressure-bearing surface 501 and needle-valve 5 motion inertia force, make the needle-valve 5 forward end seal conical surfaces and needle-valve body 4 front ends form certain interval, high pressure oil coke slurry just flows into spray orifice 405 and then ejection from this gap.When the oil coke slurry ejector proper functioning, have a small amount of oil coke slurry by the matching gap inflow needle-valve body lubricant reservoir 403 of needle-valve 5 with needle-valve body 4, as shown in Figure 2, lubricant oil flows into injector body lubricant oil oil inlet passage 102 and needle-valve body lubricant oil oil inlet passage 401 successively from lubricant oil oil-feed interface 2, enter at last in the needle-valve body lubricant reservoir 403, carry oil coke slurry then through needle-valve body lubricant oil oil discharge passage 402 and injector body lubricant oil oil discharge passage 103, after the oil coke slurry that lubricant oil oil out port 3 is come in infiltration take needle-valve body lubricant reservoir 403 out of and flow back to the lubricant oil storage.Needle-valve 5 and needle-valve body 4 fitting surfaces constantly are recycled mobile oil flushing, and small solid particle just can not piled up in needle-valve 5 and needle-valve body 4 matching gaps in the oil coke slurry, thereby keep needle-valve 5 motions smooth and easy.
Claims (2)
1. an oil coke slurry ejector that is used for compression ignition internal combustion engine comprises high pressure oil coke slurry oil inlet pipe, injector body, needle-valve body, needle-valve, it is characterized in that: also comprise lubricant oil oil-feed interface, lubricant oil oil out port;
The injector body both sides are be threaded lubricant oil oil-feed interface and lubricant oil oil out port of center line symmetry with high pressure oil coke slurry oil inlet pipe, and wherein said lubricant oil oil-feed interface communicates with the needle-valve body lubricant reservoir by injector body lubricant oil oil inlet passage and needle-valve body lubricant oil oil inlet passage successively; Described lubricant oil oil out port communicates with the needle-valve body lubricant reservoir by injector body lubricant oil oil discharge passage and needle-valve body lubricant oil oil discharge passage successively;
Described needle-valve body is threaded with the injector body front end by locking nut;
Needle-valve is inserted in the needle-valve body, and the needle-valve front end is a sealing cone, and taper angle theta is 60 °; Sealing cone closely contacts with needle-valve body, and the forefront of sealing cone is most advanced and sophisticated to be inserted in the spray orifice, makes the small solid particle in the oil coke slurry can not stop up spray orifice; In the sealing cone rear design needle-valve pressure-bearing surface is arranged; Described needle-valve pressure-bearing surface is the toroidal surface perpendicular to the needle-valve medial axis, and does not extend in the oil holding slot, makes the space of oil holding slot strengthen, and makes high pressure oil coke slurry just can act on the needle-valve pressure-bearing surface more effectively, is beneficial to and opens needle-valve;
Be provided with the needle-valve body lubricant reservoir between needle-valve body and the needle-valve, lubricant reservoir is opened at the needle-valve body middle part, and the needle-valve body front end has oil holding slot, is convenient to lubricant oil and flows smooth and easy, constantly the surface of flushing needle-valve prevents that small solid particle is deposited in the matching gap of needle-valve and needle-valve body;
2. a kind of according to claim 1 oil coke slurry ejector that is used for compression ignition internal combustion engine is characterized in that: the high pressure oil coke slurry oil inlet pipe on described lubricant oil oil-feed interface and lubricant oil oil out port and the injector body is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102385309A CN101705895B (en) | 2009-11-27 | 2009-11-27 | Oil coke slurry ejector for compression ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102385309A CN101705895B (en) | 2009-11-27 | 2009-11-27 | Oil coke slurry ejector for compression ignition engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101705895A CN101705895A (en) | 2010-05-12 |
| CN101705895B true CN101705895B (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102385309A Expired - Fee Related CN101705895B (en) | 2009-11-27 | 2009-11-27 | Oil coke slurry ejector for compression ignition engine |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644060B (en) * | 2013-12-05 | 2016-02-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | A kind of control valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1426142A1 (en) * | 1961-04-01 | 1969-03-06 | Cummins Engine Co Inc | Fuel injector |
| US4412657A (en) * | 1980-07-18 | 1983-11-01 | Lucas Industries Limited | Fuel injection nozzles |
| US5421710A (en) * | 1992-10-08 | 1995-06-06 | Nippon Soken Inc. | Fuel injection apparatus |
| JP2006118470A (en) * | 2004-10-25 | 2006-05-11 | Denso Corp | Injector |
| CN101451481A (en) * | 2007-11-30 | 2009-06-10 | 卡特彼勒科技新加坡有限公司 | Compression-ignition engine with combined features for reducing emission |
-
2009
- 2009-11-27 CN CN2009102385309A patent/CN101705895B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1426142A1 (en) * | 1961-04-01 | 1969-03-06 | Cummins Engine Co Inc | Fuel injector |
| US4412657A (en) * | 1980-07-18 | 1983-11-01 | Lucas Industries Limited | Fuel injection nozzles |
| US5421710A (en) * | 1992-10-08 | 1995-06-06 | Nippon Soken Inc. | Fuel injection apparatus |
| JP2006118470A (en) * | 2004-10-25 | 2006-05-11 | Denso Corp | Injector |
| CN101451481A (en) * | 2007-11-30 | 2009-06-10 | 卡特彼勒科技新加坡有限公司 | Compression-ignition engine with combined features for reducing emission |
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| Publication number | Publication date |
|---|---|
| CN101705895A (en) | 2010-05-12 |
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Granted publication date: 20111221 Termination date: 20121127 |