CN101087944A - Fuel injection pump having cavitation damage-prevention structure - Google Patents
Fuel injection pump having cavitation damage-prevention structure Download PDFInfo
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- CN101087944A CN101087944A CNA200580044316XA CN200580044316A CN101087944A CN 101087944 A CN101087944 A CN 101087944A CN A200580044316X A CNA200580044316X A CN A200580044316XA CN 200580044316 A CN200580044316 A CN 200580044316A CN 101087944 A CN101087944 A CN 101087944A
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- China
- Prior art keywords
- spill port
- fuel
- injection pump
- cavitation
- jet
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
- F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
- F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Disclosed herein is a fuel injection pump having cavitation damage -prevention structure, in which the structure and shape of a deflector (110) and a spill port (120) are improved, thus preventing the spill port and plunger (130) from being damaged due to cavitation. To achieve the above-mentioned purpose, the fuel injection pump of the present invention includes a means for preventing propagation of pressure waves. The propagation preventing means is provided on at least one of the spill port (120) and the deflector (110) such that pressure waves, which are generated when a jet-type cavitation, occurring just after the spill port (120) is opened strikes the spill port (120) or the deflector (110), are prevented from being propagated to cavities that remain around a side surface of the plunger (130).
Description
Technical field
The present invention relates generally to high pressure compressed fuel, and with fuel charge to sparger, thereby the fuel-injection pump of operation direct-injection internal combustion engine, more specifically, relate to a kind of fuel-injection pump, this fuel-injection pump has improved cavitation damage-prevention structure, solving the problem of pump element because of the cavitation damaged, and is tending towards increasing the problem of bringing because of fueling injection pressure.
Background technique
As known to the skilled person, internal-combustion engine is a kind ofly will and suck air mixing in the machine and heat energy that burning produces be converted into the machinery of mechanical energy by fuel.Simultaneously, based on fuel feed method, diesel engine can be divided into direct injection ic engine, precombustion cell-type motor, eddy cell type motor and air cell type motor.Direct injection ic engine adopts the method that injects fuel directly in the firing chamber, and comprises petrolift, fuel valve (sparger) and connecting tube.In addition, also have sprayer unit, wherein, fuel-injection pump and sparger are bonded to each other.
Fuel-injection pump is with high pressure compressed fuel and with the device of fuel charge to sparger.Recently, in order to improve combustion performance and to reduce waste gas, fueling injection pressure is tending towards increasing.Therefore, begun to increase for the spill port of pump barrel and the cavitation damage problem of the plunger that constitutes fuel-injection pump.Even during with relatively low pressure injection fuel, also can cause cavitation.In this case and since the intensity of cavitation a little less than, so degree of injury and not serious only can cause accidental damage.Therefore, this problem can solve by the material that improves design or change element at an easy rate according to the experience of all kinds damage.But along with the increase of fueling injection pressure, the intensity of cavitation also increases, and therefore can cause comprehensive damage to the spill port and the plunger of pump barrel.And this degree of injury is serious.But only to be the utilization of dependence experience prevent the damage that element caused because of cavitation as revising design or changing method such as material in the present effort of doing, and the true cause of research damage.
For example, among the korean patent application publication number 2001-0020139 a kind of fuel-injection pump has been proposed, wherein, on being formed at the pump barrel sidewall each is in the hole, be provided with throttling element, therefore higher relatively pressure will act on the space that forms between throttling element and the plunger, to prevent producing cavitation in the part near the plunger upper end.In addition, in Japanese kokai publication hei 7-269442, based on the hypothesis that the damage of plunger is produced according to the relation between liquid stream and the fuel tap hole shape, a kind of cavitation protection mechanism that is used for fuel-injection pump has been proposed, wherein, fuel tap hole place near pump barrel is formed with air pocket destruction hole, and is impaired in order to prevent plunger.And, a kind of oil return guide plate (spilldeflector) that is used for internal-combustion engine has also been proposed in Japanese kokai publication hei 7-54735.In this piece prior art, suppose that air pocket formed in the fuel suction process before spill port just will be closed, thereafter, and the remaining air pocket of pressure wave impinges that when the fuel of discharging by spill port impacts guide plate, produces, thus cavitation damage caused.Therefore, be formed with the receiving port that opens or closes according to the pressure of discharging fuel, so that flow through the outside of the fuel distribution of described receiving port to pump barrel at the end of guide plate.In addition, a kind of fuel injection system that is used for internal-combustion engine has been proposed among the Japanese kokai publication hei 5-340322.In this piece prior art; do not illustrate the reason that causes cavitation damage; just based on damaging by being deposited in the hypothesis that pump barrel mouth air pocket on every side causes; a kind of guard member that has the fuel charge hole with definite shape is provided; make air pocket can not be deposited in around the pump barrel mouth, thereby the fuel of oil return is contacted with the internal surface of certain angle of inclination with the fuel charge hole of guard member.
Same, various design improvement methods have been proposed, to solve the cavitation damage problem that the spill port and the plunger of pump barrel is caused because of high fuel injection pressure.But, because these methods only are the experiences that relies on various damages, and do not illustrate the reason of damage, therefore, existing does not have the reliable problem of estimating of estimating.
Summary of the invention
Therefore, consider the above-mentioned problems in the prior art and propose the present invention, and the purpose of this invention is to provide a kind of fuel-injection pump with cavitation damage-prevention structure, wherein, based on the correct understanding that fuel-injection pump is caused the reason of cavitation damage, structure and shape to guide plate and spill port are improved, and therefore can prevent that spill port and plunger are damaged.
To achieve these goals, the invention provides and a kind ofly have cavitation damage-prevention structure and be arranged on fuel-injection pump in the direct-injection internal combustion engine.Described fuel-injection pump comprises propagates anti-locking apparatus, the anti-locking apparatus of described propagation is arranged on in spill port and the guide plate at least one, thereby prevent that pressure-wave emission to the side surface that is deposited in plunger air pocket on every side, producing when jet-type cavitation impacts spill port that wherein said pressure wave produces or guide plate after just opening spill port.
Description of drawings
Fig. 1 represents to occur in the jet-type cavitation of early stage of the compression process of fuel-injection pump;
Fig. 2 represents to occur in the waterfall type cavitation of early stage of the compression process of fuel-injection pump;
Fountain shape cavitation before the spill port that Fig. 3 represents to occur in fuel-injection pump just will have been opened;
Jet-type cavitation when the spill port that Fig. 4 represents to occur in fuel-injection pump is just being opened;
Fig. 5 is the sectional view of expression according to the structure of the fuel-injection pump of first embodiment of the invention;
Fig. 6 is the detailed view of the structure of the guide plate shown in the presentation graphs 5;
Fig. 7 represents the pressure wave reflection by the formation of the guide plate shown in Fig. 5;
Fig. 8 is the sectional view of expression according to the structure of the fuel-injection pump of second embodiment of the invention;
Fig. 9 is the detailed view of the shape of the spill port shown in the presentation graphs 8;
Figure 10 represents the pressure wave reflection by the side formation of the spill port of the fuel-injection pump shown in Fig. 8;
Figure 11 is the sectional view of expression according to the structure of the fuel-injection pump of third embodiment of the invention;
Figure 12 is the detailed view of the structure of the guide plate of the fuel-injection pump of expression shown in Figure 11 and spill port; And
Figure 13 represents the pressure wave reflection by the guide plate of the fuel-injection pump shown in Figure 11 and spill port formation.
The figure elements explanation
100: pump barrel, 110: guide plate,
111: extension part, 112: reflective surface,
120: spill port, 130: plunger,
200: pump barrel, 210: spill port,
211: the expansion section, 220: plunger,
300: pump barrel, 310: guide plate,
311: the first tapered portion, 320: spill port,
321: the second tapered portion, 330: plunger.
Embodiment
Below, will be described in detail with reference to the attached drawings preferred implementation of the present invention.In order more clearly to describe the present invention, with the detailed explanation of omitting to known function and structure.
Fig. 1 to Fig. 4 represents the operation of based on fuel jet pump and the cavitation that takes place.Referring to figs. 1 through Fig. 4, under the situation of jet-type cavitation 30 that occurs in fuel-injection pump compression process early stage and waterfall type cavitation 40, since intensity that cavitation produces and quantity because of pressure relatively low a little less than, so these two kinds of air pockets are unimportant.But, under the situation of the fountain shape cavitation 10 before the spill port that occurs in fuel-injection pump just will be opened, because fueling injection pressure is higher relatively, so around the side surface of plunger, produce a large amount of air pockets.The air pocket that produces is deposited in around the surface of plunger.Simultaneously, under the situation of the jet-type cavitation 20 when the spill port that occurs in fuel-injection pump is just being opened, because cavitation 20 occurs in the moment of fueling injection pressure maximum, so the intensity of this cavitation is quite high, and flow velocity is very fast.Therefore, this cavitation can cause direct infringement to spill port, and when air pocket stream impacts spill port, can cause pressure to increase fast.Verified, the air pocket that this pressure increase will cause having been produced by the fountain shape cavitation around the plunger collapses, thus the infringement plunger.Therefore, the objective of the invention is to improve the structure of spill port and guide plate, arrive plunger air pocket on every side with the pressure-wave emission that prevents from when the jet-type cavitation impacts spill port, to produce, and preventing that spill port from directly being damaged by this jet-type cavitation, wherein said jet-type cavitation occurs in after spill port just opened.
First mode of execution
Fig. 5 is the sectional view of expression according to the structure of the fuel-injection pump of first embodiment of the invention.With reference to Fig. 5, it is impaired because just be discharged to the residual fuel of spill port 120 with high speed and high pressure after the effective travel of fuel-injection pump to be characterised in that according to the fuel-injection pump of first embodiment of the invention that the improvement structure of guide plate 110, this improvement structure are used to prevent pump barrel 100.Fuel-injection pump with above-mentioned feature can prevent that the jet-type cavitation 20 that just takes place from directly impacting spill port 120 after the effective travel of fuel-injection pump.And the structure of fuel-injection pump makes the pressure-wave emission that can prevent to produce when cavitation impacts spill port to plunger 130 air pocket on every side.
Fig. 6 is a view of representing the structure of guide plate 110 in detail.With reference to Fig. 6, guide plate 110 comprises extension part 111 and reflective surface 112.Described extension part 111 extends from the end of guide plate 110, thereby places spill port 120.In addition, the diameter of extension part 111 is less than the diameter of guide plate 110.Reflective surface 112 is the plane and is arranged under the extension part 111 terminal downsides, so that the jet-type cavitation 20 that has taken place after spill port 120 has just been opened impacts these reflective surface 112.
Simultaneously, in the present invention, the flow direction of jet-type cavitation 20 changes according to the degree of depth X and the length Y of the step part that flows out groove 131, described outflow groove is formed on the side of plunger 130 and is communicated with spill port 120 after the effective travel of fuel-injection pump, thereby discharges residual fuel.Therefore, flow out the degree of depth X and the length Y of the step part of grooves according to plunger 130, the diameter D1 of extension part 111 and mounting point L1, the machining depth d 1 that forms reflective surface 112 and the length l 1 of reflective surface 112 can be determined.In addition, can utilize computer to determine their accurate dimension by test or emulation.
Especially, must determine the mounting point L1 of extension part 111,, thereby prevent that jet-type cavitation 20 from impacting the front surface or the upper surface of extension parts 111 so that extension part 111 places the position of fully close plunger 130.In addition, the machining depth d 1 that forms reflective surface 112 from the lowest surface of extension part 111 count into extension part 111 diameter D1 1/2 or still less so that the replacing life-span of guide plate 110 can be too not short.
Fig. 7 represents the pressure wave reflection by guide plate 110 formation with above-mentioned improvement structure.With reference to Fig. 7, because higher relatively fueling injection pressure, the fountain shape cavitation 10 that took place before spill port 120 just will be opened forms a large amount of air pockets around the upper end of plunger 130 sides.
In addition, because the fueling injection pressure of fuel-injection pump reaches maximum value after spill port 120 has just been opened, thus jet-type cavitation 20 takes place, and jet-type cavitation 20 impacts the reflective surface 112 of the guide plate 110 of pump with high speed and high pressure.Similarly, jet-type cavitation 20 shock-wave reflection faces 112, but directly do not impact the side of spill port 120, therefore can prevent that the side of spill port 120 is impaired.In addition, the direction reflection that the most of pressure wave 20a that produces when jet-type cavitation 20 shock-wave reflection faces 112 flows along fuel, thus prevent to propagate into plunger 130.Propagate into the bottom of plunger 130 sides that produce a small amount of air pocket towards the residual pressure ripple 20b of plunger 130 reflections.Therefore, reduced the cavitation damage that plunger 130 is caused because of the air pocket collapse.
Second mode of execution
Fig. 8 is the sectional view of expression according to the structure of the fuel-injection pump of second embodiment of the invention.With reference to Fig. 8, be characterised in that the improvement shape of spill port 210 according to the fuel-injection pump of second embodiment of the invention, spill port 210 is limited in the pump barrel 200, in order to discharge residual fuel after the effective travel of fuel-injection pump.Because from the position that just jet-type cavitation 20 takes place after the effective travel of fuel-injection pump, increase to distance between the position of these jet-type cavitation impact spill port 210 sides, so the structure with fuel-injection pump of above-mentioned feature makes the weakened of cavitation, and prevent that pressure-wave emission from arriving plunger 220.
Fig. 9 represents the shape of spill port 210 in detail.With reference to Fig. 9, the shaped design of spill port 210 becomes the outlet side that expansion section 211 is formed on spill port 210.The inside diameter D 2 of expansion section 211 is greater than the diameter d 2 of the inlet side of spill port 210, and expansion section 211 is limited to the predetermined degree of depth from the outlet side of spill port 210.
Simultaneously, in this mode of execution, the flow direction of jet-type cavitation 20 changes according to the degree of depth X and the length Y of the step part that flows out groove 221, described outflow groove 211 is formed on the side of plunger 220 and is communicated with spill port 210 after the effective travel of fuel-injection pump, thereby discharges residual fuel.Therefore, according to the degree of depth X and the length Y of the step part of the outflow groove 221 of plunger 220, can determine the formation position L2 and the inside diameter D 2 of expansion section 211.In addition, can utilize computer to determine their accurate dimension by test or emulation.
Especially, must determine the formation position L2 of expansion section 211, so that expansion section 211 close plungers 220, thereby prevent that jet-type cavitation 20 from impacting the part side rather than the expansion section 211 of spill ports 210.In addition, preferably, the inside diameter D 2 of expansion section 211 is designed to 1.5 times of spill port 210 inlet side inner diameter d 2 or bigger, impaired with the side and the plunger 220 that effectively prevent spill port 210 because of cavitation erosion.
Figure 10 represents by having the pressure-wave propagation that the spill port 210 that improves shape changes.With reference to Figure 10, because higher relatively fueling injection pressure, occur in the fountain shape cavitation 10 of spill port 210 before just will having opened and around the upper end of plunger 220 sides, form a large amount of air pockets.
In addition, because the fueling injection pressure of fuel-injection pump reaches maximum value after spill port 210 has just been opened, thus jet-type cavitation 20 takes place, and jet-type cavitation 20 impacts the side of the expansion section 211 of spill port 210 with high speed and high pressure.At this, owing to the increase of distance the position of impacting 211 sides, expansion section from the position that jet-type cavitation 20 takes place to this jet-type cavitation, so the impact strength of cavitation dies down.And, the direction reflection that most of pressure wave 20a flows along fuel.Residual pressure ripple 20b towards plunger 220 reflections is blocked by the end wall 212 of expansion section 211, and described end wall 212 is formed by the diameter difference between the inlet side of expansion section 211 and spill port 210.Therefore, can prevent that plunger 220 is impaired because of the collapse of the air pocket that produces around plunger 220.
The 3rd mode of execution
Figure 11 is the sectional view of expression according to the structure of the fuel-injection pump of third embodiment of the invention.With reference to Figure 11, be characterised in that the improvement structure of guide plate 310 and spill port 320 according to the fuel-injection pump of third embodiment of the invention.Structure with fuel-injection pump of above-mentioned feature, the space of jet-type cavitation 20 that makes just generation after the effective travel of fuel-injection pump through between guide plate 310 and spill port 320 sides, limiting, even and impact guide plates and produce pressure wave by jet-type cavitation 20, can prevent that also pressure-wave emission from arriving plunger 330.
Figure 12 represents the structure of guide plate 310 and spill port 320 in detail.With reference to Figure 12, guide plate 310 comprises first tapered portion 311, and the side of spill port 320 comprises and the second corresponding tapered portion 321 of described first tapered portion 311.First tapered portion 311 is by dwindling its diameter to the terminal end that is arranged on guide plate 310.Second tapered portion 321 is formed on the outlet side of spill port 320, thereby dwindles gradually with the angle corresponding with first tapered portion 311.
Simultaneously, in this mode of execution, the flow direction of jet-type cavitation changes according to the degree of depth X and the length Y of the step part that flows out groove 321, described outflow groove is formed on the side of plunger 330 and is communicated with spill port 320 after the effective travel of fuel-injection pump, thereby discharges residual fuel.Therefore,, can determine mounting point L3, diameter D3 and the cone angle alpha of first tapered portion 331 according to the degree of depth X and the length Y of the step part of the outflow groove 331 that is formed on plunger 330 sides, and the formation position l3 of second tapered portion 321 and cone angle β.In addition, can utilize computer to determine their accurate dimension by test or emulation.
Especially, the cone angle alpha of first tapered portion 331 is preferably designed in 60 ° to 120 ° angular range, therefore the pressure wave that produces when jet-type cavitation 20 impacts first tapered portion can not reflect towards plunger 330, thereby prevents that effectively plunger 330 is impaired because of cavitation.
Figure 13 is that expression is by having the structure of improvement and the guide plate 310 of shape and the view of the pressure-wave propagation that spill port 320 changes.With reference to Figure 13, because higher relatively fueling injection pressure, occur in the fountain shape cavitation 10 of spill port 320 before just will having opened and around the upper end of plunger 330 sides, form a large amount of air pockets.
In addition, because the fueling injection pressure of pump reaches maximum value after spill port 320 has just been opened, so the jet-type cavitation 20 of high speed and high pressure takes place.At this, jet-type cavitation 20 is through the space between first tapered portion 311 and second tapered portion 321, and perhaps as selection, some cavitations impact first tapered portion 311.At this moment, the pressure wave 20a that when some jet-type cavitations 20 impact first tapered portion 311, produces, 20b is reflected in the space that limits between first tapered portion 311 and second tapered portion 321, therefore can not influence the air pocket that is formed on around the plunger 330, thereby prevent that plunger 330 is impaired because of the collapse of air pocket.
Although disclose preferred implementation of the present invention for illustrative purposes, the present invention is not limited to this preferred implementation.And under the prerequisite that does not break away from disclosed scope and spirit of the present invention in the claims, those skilled in the art can carry out various modifications, increase and replacement, and these modifications, increase and replacement are all in protection scope of the present invention.
Beneficial effect
As mentioned above, the invention provides a kind of fuel-injection pump for direct-injection internal combustion engine, wherein, base In the correct understanding that fuel-injection pump is caused the reason of cavitation damage, to the deflector of fuel-injection pump with return Therefore structure and the shape of oilhole are improved, and can prevent in the spill port of pump barrel and the fuel-injection pump Plunger is impaired because of cavitation.
Claims (7)
1. have cavitation damage-prevention structure and be arranged on fuel-injection pump in the direct-injection internal combustion engine, described fuel-injection pump comprises:
Be used to prevent the device of pressure-wave propagation, the anti-locking apparatus of this propagation is arranged on in spill port and the guide plate at least one, thereby the pressure-wave emission that prevents to produce when the jet-type cavitation impacts spill port or guide plate is to the air pocket that is deposited in the plunger side periphery, wherein, described jet-type cavitation occurs in after spill port just opened.
2. fuel-injection pump according to claim 1, wherein, the anti-locking apparatus of described propagation comprises:
Extension part, described extension part extends to precalculated position the spill port from the end of guide plate, and the diameter of described extension part is less than the diameter of guide plate; And
Flat reflective surface, described reflective surface is arranged under the downside of extension part end, therefore occur in the jet-type cavitation of spill port after just having opened and impact described reflective surface, thereby prevent the pressure-wave emission that produces because of impact to the air pocket that is deposited in around the plunger, and prevent that spill port is directly impaired because of described jet-type cavitation.
3. fuel-injection pump according to claim 2, wherein, the degree of depth of described reflective surface is counted from the lower side of extension part and is formed 1/2 of extension part diameter.
4. fuel-injection pump according to claim 1, wherein, the anti-locking apparatus of described propagation comprises
The expansion section, the outlet side that the internal diameter of described expansion section is arranged on spill port greater than the internal diameter and the described expansion section of spill port inlet side, so that the weakened of cavitation, and the pressure wave that when the side of jet-type cavitation impact expansion section, produces of the blocking-up of the end face by the expansion section, thereby prevent that pressure-wave emission is to the air pocket that is deposited in the plunger side periphery, wherein, described jet-type cavitation occurs in after spill port just opened.
5. fuel-injection pump according to claim 4, wherein, the internal diameter of described expansion section is at least 1.5 times of spill port inlet side internal diameter.
6. fuel-injection pump according to claim 1, wherein, the anti-locking apparatus of described propagation comprises:
First tapered portion, described first tapered portion is arranged on the end of guide plate, forms to terminal by the diameter that reduces guide plate; And
Second tapered portion, described second tapered portion is formed on the outlet side of spill port and dwindles gradually with the angle corresponding with first tapered portion, thereby make that occurring in spill port has just opened the space of jet-type cavitation through limiting between first tapered portion and second tapered portion afterwards, perhaps impact first tapered portion, thereby the pressure-wave emission that prevents to produce because of impact is to the air pocket that is deposited in the plunger side periphery.
7. fuel-injection pump according to claim 6, wherein, described first tapered portion has 60 ° to the 120 ° cone angles in the scope, thereby can prevent that the pressure wave that produces when described jet-type cavitation impacts first tapered portion from reflecting towards plunger.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2004-0112748 | 2004-12-27 | ||
| KR1020040112747 | 2004-12-27 | ||
| KR1020040112748A KR20060074116A (en) | 2004-12-27 | 2004-12-27 | Fuel injection pump to prevent cavitation erosion |
| KR10-2004-0112747 | 2004-12-27 | ||
| KR1020040112746 | 2004-12-27 | ||
| KR1020040112748 | 2004-12-27 | ||
| KR1020040112747A KR100895948B1 (en) | 2004-12-27 | 2004-12-27 | Fuel injection pump to prevent cavitation erosion |
| KR10-2004-0112746 | 2004-12-27 | ||
| KR1020040112746A KR100895407B1 (en) | 2004-12-27 | 2004-12-27 | Fuel injection pump to prevent cavitation erosion |
| PCT/KR2005/004192 WO2006071009A1 (en) | 2004-12-27 | 2005-12-08 | Fuel injection pump having cavitation damage-prevention structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101087944A true CN101087944A (en) | 2007-12-12 |
| CN101087944B CN101087944B (en) | 2010-06-16 |
Family
ID=37166905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580044316XA Active CN101087944B (en) | 2004-12-27 | 2005-12-08 | Fuel injection pump having cavitation damage-prevention structure |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100895948B1 (en) |
| CN (1) | CN101087944B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239327A (en) * | 2008-10-27 | 2011-11-09 | 现代重工业株式会社 | Apparatus for preventing cavitation damage to a diesel engine fuel injection pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101400580B1 (en) | 2010-01-15 | 2014-07-01 | 현대중공업 주식회사 | Injection Device for Fuel Injectiojn Pump |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1594124A (en) * | 1977-04-30 | 1981-07-30 | Lucas Industries Ltd | Liquid fuel injection pumps |
| DE3535808A1 (en) * | 1985-10-08 | 1987-04-09 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| JPH07119581A (en) * | 1993-10-18 | 1995-05-09 | Nippondenso Co Ltd | Fuel injection pump |
| DE4338483C1 (en) * | 1993-11-11 | 1995-05-24 | Orange Gmbh | Fuel injection pump for Diesel engine |
| JPH10266927A (en) | 1997-03-25 | 1998-10-06 | Mitsubishi Heavy Ind Ltd | Fuel injection pump |
| DK176162B1 (en) | 1997-04-21 | 2006-10-23 | Man B & W Diesel As | Fuel pump for internal combustion engines, especially large slow-moving marine diesel engines |
| JP2000291511A (en) | 1999-04-06 | 2000-10-17 | Niigata Eng Co Ltd | Fuel injection pump |
-
2004
- 2004-12-27 KR KR1020040112747A patent/KR100895948B1/en active IP Right Grant
-
2005
- 2005-12-08 CN CN200580044316XA patent/CN101087944B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239327A (en) * | 2008-10-27 | 2011-11-09 | 现代重工业株式会社 | Apparatus for preventing cavitation damage to a diesel engine fuel injection pump |
| CN102239327B (en) * | 2008-10-27 | 2013-06-05 | 现代重工业株式会社 | Apparatus for preventing cavitation damage to a diesel engine fuel injection pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101087944B (en) | 2010-06-16 |
| KR100895948B1 (en) | 2009-05-07 |
| KR20060074115A (en) | 2006-07-03 |
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