WO2012053706A1 - 가변 압력실을 가지는 연료분사펌프 - Google Patents
가변 압력실을 가지는 연료분사펌프 Download PDFInfo
- Publication number
- WO2012053706A1 WO2012053706A1 PCT/KR2011/001917 KR2011001917W WO2012053706A1 WO 2012053706 A1 WO2012053706 A1 WO 2012053706A1 KR 2011001917 W KR2011001917 W KR 2011001917W WO 2012053706 A1 WO2012053706 A1 WO 2012053706A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- piston
- fuel injection
- cylinder
- barrel
- 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.)
- Ceased
Links
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/022—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type having an accumulator storing pressurised fuel during pumping stroke of the piston for subsequent delivery to the injector
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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
-
- 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
- F02M59/205—Quantity of fuel admitted to pumping elements being metered by an auxiliary metering device
-
- 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
- F02M59/22—Varying quantity or timing by adjusting cylinder-head space
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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
- F02M59/46—Valves
- F02M59/462—Delivery valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
- F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
- F04B11/0033—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a mechanical spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
Definitions
- the present invention relates to a fuel injection pump having a variable pressure chamber, and more particularly, by adjusting a pressure in a variable pressure chamber capable of adjusting a vertical reciprocating movement distance of a piston through a manual pressure control unit or an automatic pressure control unit.
- the present invention relates to a fuel injection pump having a variable pressure chamber for delaying or advancing fuel injection timing to improve fuel economy as well as reducing generation of NOx and reducing smog, which is a harmful gas, by adjusting the volume of the fuel.
- VIT Very Injection Timing
- VIT or FQS as described above is used for the purpose of reducing fuel economy while increasing combustion maximum pressure in the combustion cylinder to improve combustion efficiency.
- the VIT can automatically adjust the injection timing while the engine is running, so that the optimum fuel consumption can be achieved at a low load.
- the Bosch Type fuel injection pump is a method in which a high pressure fuel is injected when the plunger blocks the spill port of the barrel, and the high pressure fuel is injected. In order to control the position of the spill port formed in the barrel up and down or the shape of the plunger was modified to the load.
- the conventional VIT technology for adjusting the timing of fuel injection requires installing a device having a complicated structure for changing the position of the barrel spill port, or complicatedly changing the shape of the plunger, causing the plunger to be worn or fueled.
- the physical property value of the fuel injection timing is changed, there is a problem that external adjustment of the fuel injection timing is difficult.
- an object of the present invention is not only a device for moving a separate barrel, but also a variable pressure chamber to adjust the fuel injection timing for each engine rod with a simpler configuration and lower manufacturing cost than a conventional fuel injection pump without the shape change of the plunger. It is to provide a fuel injection pump having a.
- the present invention for achieving the above object is a barrel inserted into the pump housing; A plunger slidingly engaged in the barrel; A fuel injection pump configured to include an upper cover coupled to an upper surface of the pump housing, wherein the plunger closes the outlet hole of the barrel to start the pressure rise of the fuel and injects the fuel at a high pressure.
- the close plug is inserted into the lower end is inserted into the upper cover;
- a cylinder having a lower end inserted into the tight plug and having a variable pressure chamber formed therein;
- a main fuel pressurizing hole formed in the upper cover and the barrel so as to communicate the variable pressure chamber of the cylinder and the plunger insertion hole of the barrel with each other;
- a piston installed in the variable pressure chamber of the cylinder to vertically slide;
- a manual pressure control unit installed to be able to adjust the upper and lower heights of the upper and lower ends of the cylinder so as to elastically support the upper end of the piston.
- the pressure adjusting means may further include an automatic pressure adjusting part connected to an air inlet groove passing through the cylinder and the contact plug so as to be positioned above the piston, and automatically adjusting the position of the piston. .
- the air pressure supply is connected to the air inlet groove through the air inlet groove passing through the cylinder and the contact plug to be located above the piston;
- a variable pressure valve installed on the air pressure supply connection line;
- an engine load signal connected to the variable pressure valve and the engine.
- the manual pressure adjustment unit the pressure adjustment screw which is screwed to the upper and lower height adjustment adjustable to the upper end of the cylinder to be located above the piston;
- An elastic member interposed between the piston and the pressure regulating screw to elastically support the piston with respect to the pressure regulating screw;
- a fixing nut screwed to an upper end of the pressure regulating screw to be in close contact with the upper surface of the cylinder to fix the pressure regulating screw.
- the fuel injection pump having the variable pressure chamber is provided by adjusting the vertical height of the pressure adjusting screw of the manual pressure adjusting part or by adjusting the air pressure supplied by the air pressure supply of the automatic pressure adjusting part.
- the volume of the variable pressure chamber By adjusting the reciprocating distance of the piston and the bush, the delay effect of the fuel cam can be seen so that the fuel injection timing of the fuel injection pump can be delayed or advanced.
- the fuel injection pump having a variable pressure chamber does not have a device for moving a separate barrel and can perform complete combustion with a simpler configuration and lower manufacturing cost than a conventional fuel injection pump without changing the shape of the plunger.
- the fuel injection timing is adjusted for each engine rod to reduce the generation of harmful NOx, and to reduce the pollution of harmful gases, thereby reducing the environmental pollution. It is a very useful invention.
- FIG. 1 is a view for explaining a fuel injection pump according to the present invention
- FIG. 2 is a view for explaining a manual pressure control unit of the fuel injection pump according to the present invention.
- Figure 3 is a view for explaining the automatic pressure control unit of the fuel injection pump according to the present invention
- piston 144 manual pressure regulator
- sealing ring 145 automatic pressure regulator
- FIG. 1 is a view for explaining a fuel injection pump according to the present invention
- Figure 2 is a view for explaining a manual pressure control unit of the fuel injection pump according to the present invention
- Figure 3 is an automatic fuel injection pump according to the present invention It is a figure for demonstrating a pressure control part.
- the fuel injection pump according to the present invention includes a barrel 11 inserted into the pump housing 10 and having a plunger insertion hole 110 formed therein, and the barrel 11 of the barrel 11.
- a plunger 12 slidingly fastened to the inner plunger insertion hole 110, an upper cover 13 fastened to an upper surface of the pump housing 10, a plunger insertion hole 110 of the barrel 11, and It is configured to include a pressure adjusting means 14 which is installed in the upper cover 13 to communicate.
- the pressure adjusting means 14, the contact plug 140, the cylinder 141, the main fuel pressure hole 142, the piston 143 may be composed of a manual pressure adjusting unit 144, and The lower end is inserted into the upper cover 13 of the close contact plug 140 of the pressure adjusting means 14 configured as described above, and the cylinder 141 is inserted into the lower end of the close contact plug 140, and has a variable pressure therein.
- the chamber 141a is formed, and the main fuel pressurizing hole 142 communicates with the upper cover 13 and the barrel so that the variable pressure chamber 141a and the plunger insertion hole 110 of the barrel 11 communicate with each other.
- the piston 143 is installed in the variable pressure chamber 141a of the cylinder 141 to be movable up and down, the manual pressure adjusting unit 144 is the upper end of the piston 143
- the upper and lower height of the cylinder 141 is adjustable so as to be elastically supported.
- the pressure adjusting means 14 of the fuel injection pump according to the present invention is connected to the air inlet groove 145a passing through the cylinder 141 and the close plug 140 so as to be positioned above the piston 143. It can be configured to further include an automatic pressure control unit 145 that can automatically adjust the position of the piston.
- the automatic pressure adjusting unit 145 may be composed of an air pressure supply 145b, a variable pressure valve 145c and an engine load signal 145d, and the air pressure of the automatic pressure adjusting unit 145 configured as described above.
- the feeder 145b is connected to the air inlet groove 145a through the cylinder 141 and the contact plug 140 so as to be positioned above the piston 143 by the pneumatic supply connection line 145e, and the variable The pressure valve 145c is installed on the air pressure supply connection line 145e, and the engine load signal 145d is connected to the variable pressure valve 145c and the engine (not shown).
- the manual pressure adjusting unit 144 may be composed of a pressure adjusting screw 144a, an elastic member 144b and a fixing nut 144c, the pressure control of the manual pressure adjusting unit 144 is configured as described above
- the screw 144a is screwed to the upper end of the cylinder 141 so as to be positioned above the piston 143 so as to be adjustable in height
- the elastic member 144b is connected to the piston 143 and the pressure adjusting screw 144a.
- the bush 144d may be further interposed between the piston 143 and the fixed member.
- Nut 144c is in close contact with the upper surface of the cylinder 141 is screwed to the upper end of the pressure adjusting screw 144a to fix the pressure adjusting screw 144a.
- a sealing ring 144e may be further installed at the lower end of the outer circumferential surface of the pressure adjusting screw 144a.
- FIG 4 is a graph showing a variable fuel injection rate according to the position of the variable pressure chamber according to the present invention.
- the pressure control means of the fuel injection pump having a variable pressure chamber according to the present invention when the operation of the fuel pump starts the plunger 12 is raised to the free stroke spill hole 111
- the free stroke spill hole 111 is closed by the plunger 12 installed inside the barrel 11, the fuel introduced into the barrel 11 is pressurized by the plunger 12.
- the pressurized fuel is delivered to the fuel injection valve (not shown) through the fuel outlet 15 through the delivery valve 16.
- the excess pressure caused by the pulsation of the fuel injection valve is filtered at the constant valve 17.
- the pressurized fuel in the barrel 11 is introduced into the pressure regulating means 14 according to the present invention through the main fuel pressurizing hole 142 to apply pressure to the piston 143 of the pressure regulating means 14. Will be added.
- the pressure of the fuel delivered to the piston 143 is transmitted to the bush 144d so that the piston 143 is raised by the pressure of the fuel so that the bush 144d is linked with the piston 143 to rise. As the elastic member is compressed by the bush 144d.
- the reciprocating stroke Stroke of the piston 143 and the bush 144d is adjusted by the pressure adjusting screw 144a of the manual pressure adjusting unit 144. That is, when the pressure adjusting screw 144a of the manual pressure adjusting unit 144 is further lowered into the cylinder 141, the elastic member 144b is pressed and compressed by the pressure adjusting screw 144a.
- the reciprocating movement distance of the piston 143 and the bush 144d is reduced, and when the pressure adjusting screw 144a of the manual pressure adjusting unit 144 is rotated and raised out of the cylinder 141, the pressure adjusting screw 144a ) And the distance between the bush 144d and the bush is increased by the distance from which the pressure adjusting screw 144a is raised, so that the elastic member 144b is expanded to increase the reciprocating movement distance of the piston 143 and the bush 144d.
- the reciprocating stroke Stroke of the piston 143 and the bush 144d may be adjusted by the automatic pressure controller 145. That is, the air pressure generated by the pneumatic pressure supply 145b is opened and closed via the pneumatic pressure supply line 145c by opening and closing the variable pressure valve 145c in response to the signal of the engine load signal 145d of the automatic pressure adjusting unit 145. It is provided between the adjusting screw 144a and the bush 144d to adjust the air pressure for pressing the piston 143 to adjust the reciprocating movement distance of the piston 143 and the bush 144d.
- the fuel injection pump having the variable pressure chamber according to the present invention may be controlled by the vertical height of the pressure adjusting screw 144a of the manual pressure adjusting unit 144 or by the air pressure supply of the automatic pressure adjusting unit 145.
- the volume of the variable pressure chamber 141a is adjusted by adjusting the reciprocating movement distance of the piston 143 and the bush 144d through the adjustment of the air pressure supplied by the 145b. The delay effect can be seen so that the fuel injection timing of the fuel injection pump can be delayed or advanced.
- the fuel injection pump having a variable pressure chamber according to the present invention does not have a device for moving a separate barrel and can perform complete combustion with a simpler configuration and lower manufacturing cost than a conventional fuel injection pump without changing the shape of the plunger.
- the fuel injection timing for each engine rod can be adjusted to reduce the generation of harmful NOx and to reduce the pollution of harmful gases, thereby reducing environmental pollution. .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims (4)
- 펌프 하우징 내부에 삽입 설치되는 배럴; 상기 배럴 내부에 슬라이딩 체결되는 플런저; 상기 펌프 하우징의 상부면에 체결되는 상부커버;를 포함하여 구성되어 상기 플런저가 배럴의 유출공을 폐쇄시켜 연료의 압력 상승이 시작되어 고압의 연료를 분사하는 연료 분사펌프에 있어서,상기 연료 분사펌프는 상부 커버에 하단부가 삽입 설치되는 밀착 플러그;상기 밀착 플러그에 하단부가 삽입 설치되며 내부에 가변 압력실이 형성되는 실린더;상기 실린더의 가변 압력실과 배럴의 플런저 삽입 홀을 서로 연통시키도록 상기 상부 커버와 배럴에 형성된 메인 연료 가압 홀;상기 실린더의 가변 압력실에 상하 슬라이딩 이동 가능하도록 설치되는 피스톤; 및상기 피스톤의 상단부를 탄성 지지하도록 상기 실린더의 상단부에 상하 높이 조절 가능하게 설치되는 수동 압력 조절부;로 구성된 압력 조절수단을 더 포함하여 구성된 가변 압력실을 가지는 연료 분사펌프.
- 제 1 항에 있어서,상기 압력 조절수단은,상기 피스톤의 상부에 위치하도록 상기 실린더와 밀착 플러그를 관통하는 공기 유입 홈에 연결되어 상기 피스톤의 위치를 자동으로 조절할 수 있는 자동 압력 조절부를 더 포함하여 구성된 것을 특징으로 하는 가변 압력실을 가지는 연료 분사펌프.
- 제 2 항에 있어서,상기 자동 압력 조절부는,상기 피스톤의 상부에 위치하도록 상기 실린더와 밀착 플러그를 관통하는 공기 유입 홈에 공기압 공급기 연결라인에 의해 연결되는 공기압 공급기;상기 공기압 공급기 연결라인 상에 설치되는 가변 압력밸브; 및상기 가변 압력 밸브 및 엔진과 연결되는 엔진 부하 신호기;로 구성된 가변 압력실을 가지는 연료 분사펌프.
- 제 2 항에 있어서,상기 수동 압력 조절부는,상기 피스톤의 상부에 위치하도록 상기 실린더의 상단부에 상하 높이 조절 조절 가능하게 나사 체결되는 압력 조절 스크루;상기 피스톤과 압력 조절 스크루 사이에 개재되어 상기 압력 조절 스크루에 대하여 피스톤을 탄성 지지하는 탄성부재; 및상기 실린더의 상부면에 밀착되어 상기 압력 조절 스크루를 고정시키도록 상기 압력 조절 스크루의 상단부에 나사 체결되는 고정 너트;로 구성된 가변 압력실을 가지는 연료 분사밸브.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/819,005 US9051925B2 (en) | 2010-10-20 | 2011-03-21 | Fuel injection pump including a variable pressure compartment |
| EP11834506.5A EP2631464B1 (en) | 2010-10-20 | 2011-03-21 | Fuel injection pump including a variable pressure compartment |
| CN2011900004604U CN202914217U (zh) | 2010-10-20 | 2011-03-21 | 具有可变压力室的燃料喷射泵 |
| JP2013520631A JP5627778B2 (ja) | 2010-10-20 | 2011-03-21 | 可変圧力室を有する燃料噴射ポンプ |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100102372A KR101144504B1 (ko) | 2010-10-20 | 2010-10-20 | 가변 압력실을 가지는 연료분사펌프 |
| KR10-2010-0102372 | 2010-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012053706A1 true WO2012053706A1 (ko) | 2012-04-26 |
Family
ID=45975399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2011/001917 Ceased WO2012053706A1 (ko) | 2010-10-20 | 2011-03-21 | 가변 압력실을 가지는 연료분사펌프 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9051925B2 (ko) |
| EP (1) | EP2631464B1 (ko) |
| JP (1) | JP5627778B2 (ko) |
| KR (1) | KR101144504B1 (ko) |
| CN (1) | CN202914217U (ko) |
| WO (1) | WO2012053706A1 (ko) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101365770B1 (ko) | 2012-11-13 | 2014-02-21 | 현대중공업 주식회사 | 기계식 디젤 연료분사장치의 연료분사시기 조절장치 |
| KR101881872B1 (ko) * | 2014-10-24 | 2018-07-26 | 현대중공업 주식회사 | 압력 변화용 딜리버리 밸브를 이용한 연료분사펌프 |
| KR101881867B1 (ko) * | 2014-10-29 | 2018-07-26 | 현대중공업 주식회사 | 복수의 가변압력실을 구비하는 연료분사펌프 |
| US11459863B2 (en) | 2019-10-03 | 2022-10-04 | U.S. Well Services, LLC | Electric powered hydraulic fracturing pump system with single electric powered multi-plunger fracturing pump |
| CN111197573B (zh) * | 2019-12-31 | 2022-08-26 | 无锡市东亚泵业有限公司 | 一种往复泵调节阀 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650179A (ja) * | 1992-05-30 | 1994-02-22 | Robert Bosch Gmbh | 内燃機関の燃料噴射ポンプ |
| KR19980038352U (ko) * | 1996-12-19 | 1998-09-15 | 박병재 | 연료공급 차단장치 |
| JP2000130281A (ja) * | 1998-10-23 | 2000-05-09 | Denso Corp | 分配型燃料噴射ポンプ |
| JP2007127002A (ja) * | 2005-11-01 | 2007-05-24 | Yanmar Co Ltd | 燃料噴射装置 |
| JP2010159651A (ja) * | 2009-01-06 | 2010-07-22 | Yanmar Co Ltd | 燃料噴射ポンプ |
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| US2055578A (en) * | 1930-05-29 | 1936-09-29 | Bosch Robert | Fuel supply and regulating system for internal combustion engines |
| US2071237A (en) * | 1934-08-16 | 1937-02-16 | Rupprecht Tom | Fuel injector for diesel engines |
| JPS51120321A (en) * | 1975-04-14 | 1976-10-21 | Yanmar Diesel Engine Co Ltd | Fuel injection pump for diesel engine |
| DE3300876A1 (de) * | 1983-01-13 | 1984-07-19 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe |
| DE3711744A1 (de) * | 1987-04-07 | 1988-10-27 | Bosch Gmbh Robert | Verfahren und vorrichtung zur steuerung der kraftstoffeinspritzmenge |
| JPS63309782A (ja) * | 1987-06-11 | 1988-12-16 | Maruyama Seisakusho:Kk | 圧力振動緩衝装置の空気補給装置 |
| JPH0674776B2 (ja) * | 1988-09-02 | 1994-09-21 | 株式会社クボタ | ディーゼルエンジンの燃料噴射ポンプの噴射量調整装置 |
| US5197437A (en) * | 1988-09-02 | 1993-03-30 | Volkswagen Ag | Fuel injection apparatus for an internal combustion engine with an injection pump having several high-pressure outlets |
| DE19831077A1 (de) * | 1998-07-10 | 2000-01-13 | Orange Gmbh | Kraftstoffeinspritzpumpe für eine Brennkraftmaschine |
| JP4174199B2 (ja) * | 2001-08-28 | 2008-10-29 | ヤンマー株式会社 | 燃料噴射装置 |
-
2010
- 2010-10-20 KR KR20100102372A patent/KR101144504B1/ko active Active
-
2011
- 2011-03-21 EP EP11834506.5A patent/EP2631464B1/en not_active Not-in-force
- 2011-03-21 WO PCT/KR2011/001917 patent/WO2012053706A1/ko not_active Ceased
- 2011-03-21 JP JP2013520631A patent/JP5627778B2/ja not_active Expired - Fee Related
- 2011-03-21 US US13/819,005 patent/US9051925B2/en active Active
- 2011-03-21 CN CN2011900004604U patent/CN202914217U/zh not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650179A (ja) * | 1992-05-30 | 1994-02-22 | Robert Bosch Gmbh | 内燃機関の燃料噴射ポンプ |
| KR19980038352U (ko) * | 1996-12-19 | 1998-09-15 | 박병재 | 연료공급 차단장치 |
| JP2000130281A (ja) * | 1998-10-23 | 2000-05-09 | Denso Corp | 分配型燃料噴射ポンプ |
| JP2007127002A (ja) * | 2005-11-01 | 2007-05-24 | Yanmar Co Ltd | 燃料噴射装置 |
| JP2010159651A (ja) * | 2009-01-06 | 2010-07-22 | Yanmar Co Ltd | 燃料噴射ポンプ |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2631464A4 (en) | 2018-01-10 |
| EP2631464B1 (en) | 2019-01-16 |
| EP2631464A1 (en) | 2013-08-28 |
| JP2013531184A (ja) | 2013-08-01 |
| CN202914217U (zh) | 2013-05-01 |
| KR20120040879A (ko) | 2012-04-30 |
| JP5627778B2 (ja) | 2014-11-19 |
| US9051925B2 (en) | 2015-06-09 |
| KR101144504B1 (ko) | 2012-05-11 |
| US20130156620A1 (en) | 2013-06-20 |
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