WO2011132832A1 - 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 - Google Patents
디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 Download PDFInfo
- Publication number
- WO2011132832A1 WO2011132832A1 PCT/KR2010/007363 KR2010007363W WO2011132832A1 WO 2011132832 A1 WO2011132832 A1 WO 2011132832A1 KR 2010007363 W KR2010007363 W KR 2010007363W WO 2011132832 A1 WO2011132832 A1 WO 2011132832A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- valve
- low
- fuel
- low pressure
- Prior art date
Links
Images
Classifications
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/10—Other injectors with multiple-part delivery, e.g. with vibrating valves
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
Definitions
- the present invention relates to a fuel injection valve having a two-stage fuel injection device, and more particularly, a nozzle of a fuel injection valve for injecting fuel into a cylinder according to the pressure of the fuel discharged from a fuel pump to a large marine engine and a medium engine.
- the two solenoid valves are operated in conjunction with the low load point and the high load point to change the number of holes to open the low and high load areas artificially.
- the present invention relates to a two-stage fuel injection valve for a diesel engine that is capable of reducing the amount of fuel remaining and producing better combustion performance and higher fuel economy.
- a conventional diesel engine has a needle valve and a spring that open when a fuel of a higher pressure than an opening pressure comes in and close when a low pressure comes in.
- the Wartsila-Sulzer type, the MAN-B & W type, and the medium-sized engines which are typical types of the conventional fuel valve, are processed in the nozzle when the Wartsila-Sulzer exceeds the opening pressure but no high pressure is formed. Instead of spraying the fuel into the cylinder through several nozzle holes, the fuel flows into the cylinder. After the fuel injection is finished, the space between the closed needle valve and the nozzle hole (SAC volume) is large, and the remaining fuel flows into the cylinder, causing the above-described harmful gas problem.
- MAN-B & W has adopted a slide type needle valve to reduce the SAC volume, but there is a limit in not being able to actively cope with pressures beyond the open pressure. That is, although the SAC volume is fixed, according to the present invention, since the SAC volume after the actual injection is the space between the low pressure needle valve and the nozzle, the SAC volume can be minimized.
- the spring pressure is increased to open at a constant pressure, and the opening pressure is adjusted by artificially increasing the fuel pressure in a device other than the fuel valve.
- the present invention increases the pressure in the fuel valve. It was possible to spray at high pressure under load.
- the conventional technique of FIG. 15 is to determine the injection timing (Timing) in the fuel valve itself, and is to be injected by a constant pressure the previously introduced pressure fuel. That is, the timing of injection and the maximum pressure of fuel oil are adjusted through the fuel pump or other medium at the time of fuel oil transfer. Accordingly, the present invention is configured to adjust the time before and after the high-pressure formation of the fuel injection time in the fuel valve itself can reduce the harmful gas through optimum combustion.
- the device is installed in the valve itself to be injected at a pressure greater than the opening pressure to the fuel valve for better fuel injection performance, the injection time of the opening pressure
- the injection time is set by solenoid valve at low load and high load so that the injection time can be clearly differentiated by the pressure coming into the fuel valve and the pressure higher than the internal spring opening pressure.
- Two-stage valve solenoid valve for diesel engine that can prevent fuel waste and reduce harmful gas (Smoke, NOx) by minimizing the space between needle valve and nozzle hole closed after injection because differential and sequential nozzle holes are opened.
- the purpose is to provide a fuel injection valve.
- the present invention for achieving the above object is a fuel injection valve for injecting fuel in a cylinder in a diesel engine, the pressure of the fuel coming into the fuel valve, when the engine is a low load requiring a small amount of engine power Division means divided into two stages when necessary high load; A nozzle having a low pressure nozzle hole opened at a low load and a high pressure nozzle hole opened at a high load; Low pressure injection means for injecting fuel by only opening the low pressure nozzle hole at a low load; And a high pressure injection means for injecting fuel by opening the high pressure nozzle hole at the same time as the low pressure nozzle hole at the high load.
- the dividing means is a low pressure solenoid valve to operate when the low load is applied to open only the low pressure nozzle valve; Characterized in that it consists of a high-pressure solenoid valve to operate as a low pressure solenoid valve when the high load is applied to open the high pressure nozzle valve at the same time as the low pressure nozzle valve.
- the low pressure injection means may include a low pressure needle spring connected to a low pressure solenoid valve and a fuel passage operated when the low pressure is low; A low pressure pressure booster spindle connected to the low pressure needle spring; A low pressure needle valve connected to the low pressure pressure booster spindle; And a low pressure shuttle valve for discharging the low pressure fuel.
- the low pressure injection means the fuel pressure to the low pressure needle valve and the high pressure needle valve through the fuel main passage, at the same time the fuel through the low pressure shuttle valve and high pressure shuttle valve for the low pressure booster spindle and high pressure Low pressure booster spindle by operating low pressure solenoid when low pressure needle valve and high pressure needle valve waits over fuel pressure coming from the inlet port.
- Relative pressure acting on the exiting to the outlet through the lifting bushing valve in conjunction with the low-pressure needle valve to move the low pressure nozzle hole is characterized in that the fuel is injected.
- the high pressure injection means may include a high pressure needle spring connected to a high pressure solenoid valve and a fuel passage that operate when the pressure is high at high load; A high pressure pressure booster spindle connected to the high pressure needle spring; And a high pressure needle valve connected to the high pressure pressure booster spindle.
- the fuel pressure is waiting to the low pressure needle valve 120 and the high pressure needle valve 121 through the fuel passage 170, at the same time low pressure shuttle valve 150 and high pressure shuttle valve 151
- the fuel through affects the low pressure booster spins 143 and the high pressure booster spins 141 and acts as an atmospheric pressure, so that the low pressure needle valve 120 and the high pressure needle valve 121 enter or exceed the fuel pressure.
- the low pressure solenoid valve 202 is operated first so that the relative pressure acting on the low pressure auxiliary spindle 141 flows to the outlet 171 through the lifting bush valve 181.
- the two-stage fuel injection valve for the diesel engine includes a fuel valve block (Fuel valve block) connected to the high pressure pipe; A nozzle holder surrounding the entire fuel valve; A high pressure needle spring connected to the fuel passage bush and operating at high pressure; A high pressure pressure booster spindle coupled with the high pressure needle spring and configured to stand by at high pressure at a low speed and low load pressure; A high pressure needle valve coupled with the high pressure pressure boot spindle; A low pressure needle spring surrounding the spindle for the high pressure pressure boot; A low pressure pressure booster spindle coupled with the low pressure needle spring to allow a high pressure pressure booster spindle to pass therethrough; A low pressure needle valve coupled to the low pressure pressure booth spindle; A nozzle having a low pressure nozzle hole for injecting fuel into a cylinder and a high pressure nozzle hole for injecting fuel into the cylinder at a high speed and high load pressure; Low pressure solenoid valves and high pressure solenoid valves to adjust injection points at low and high pressures; A lifting bush valve coupled to the fuel valve
- the present invention increases the injection pressure by increasing the pressure through the internal device rather than the pressure injected by the fuel injection device.
- the injection was performed at high pressure even at low loads, and the two solenoid valves were relayed for low and high pressures, so that the injection timing was delayed or accelerated.
- the discharge area of the fuel is reduced according to the pressure difference, and the spraying shape is improved. It has a good combustion performance, and the flow path in the nozzle is narrowed as a whole to reduce the residual fuel (Smoke, Nox) and to improve fuel efficiency by remaining in the flow path after the injection is finished to reduce the residual fuel flowing to the combustion cylinder.
- FIG. 1 is a cross-sectional view showing an embodiment according to the present invention
- FIG. 2 is a cross-sectional view showing an embodiment before fuel injection according to the present invention
- FIG. 3 is a cross-sectional view showing an embodiment before fuel opening according to the present invention.
- FIG. 4 is a cross-sectional view showing a shape that is injected by the primary pressure by the operation of the primary solenoid valve at low load
- FIG. 5 is a cross-sectional view showing a shape that is injected by the secondary pressure by the operation of the secondary solenoid valve at high load
- FIG. 6 is a cross-sectional view showing the standby state during the process of fuel injection by the stroke of the needle valve during the first and second injection,
- FIG. 7 is a cross-sectional view showing a state in which fuel is filled during the process of fuel injection by the stroke of the needle valve during the 1st and 2nd injection;
- FIG. 8 is a cross-sectional view showing the injection by the low pressure nozzle hole during the process of fuel injection by the stroke of the needle valve in the first and second injection;
- 9 is a cross-sectional view showing the injection by the low pressure nozzle hole and the high pressure nozzle hole during the process of fuel injection by the stroke of the needle valve in the first and second injection;
- FIG. 10 is a cross-sectional view showing a state in which the fuel is filled during the process of the pressure, the first and second operations of the solenoid valve sequentially;
- 11 is a cross-sectional view showing a state in which the fuel is discharged to the low pressure fuel outlet during the process of the pressure, the first and second operations of the solenoid valve in sequence;
- FIG. 12 is a cross-sectional view showing a state in which the fuel is discharged to the high-pressure fuel outlet during the pressure, solenoid valve sequentially during the first and second operations,
- FIG. 13 is a graph showing a change in pressure at the time of loading a conventional fuel valve
- 15 is a schematic view showing a conventional fuel injection valve
- Solenoid valve spring for high pressure Solenoid v / v spring
- Solenoid valve spring for low pressure Solenoid v / v spring
- FIG. 1 and 2 is a cross-sectional view of the fuel injection valve according to the present invention
- Figure 3 is before the solenoid is operated so as not to be injected even under the load pressure according to the present invention, by supplying pressure to the pressure booster to increase the relative pressure
- 4 is a cross-sectional view showing a first fuel injection embodiment by operating the first low pressure solenoid to discharge the relative pressure
- FIG. 5 illustrates a second fuel by operating the second solenoid at high speed and high load pressure.
- 6, 7, 8, and 9 are shapes in which primary and secondary injections are made through primary secondary needle valves having a constant stroke
- FIGS. 10, 11, and 12 are shown in FIG. It operates by interlocking with solenoid valve to discharge relative pressure to make first injection and second injection.
- FIG. 13 is a general injection graph when the load is low
- FIG. 14 is a graph that is sprayed secondly after the first injection at high pressure even at a low load according to the present invention
- 15 is a schematic view showing a fuel injection valve of the prior art.
- the present invention provides a fuel valve for a diesel engine, the fuel valve block 101 connected to a high pressure pipe, a nozzle holder 100 surrounding the entire fuel valve, and a fuel container.
- the high pressure needle spring 133 connected to the furnace bush 181 and operating at a high pressure, and the high pressure pressure booster spindle 141 coupled to the high pressure needle spring 133 and waiting at high pressure at a low speed and low load pressure;
- a high pressure needle valve 121 coupled with the high pressure pressure boot spindle 141, a low pressure needle spring 132 surrounding the high pressure pressure boot spindle, and a low pressure needle spring 132.
- Low Pressure Nozzle Hole The nozzle nozzle 140, which is equipped with an essure nozzle hole 160 and a high pressure nozzle hole 161 for injecting fuel into a cylinder at a high speed and a high load pressure, and the injection timing at low pressure and high pressure are adjusted.
- Lifting bush valve which is combined with the low pressure solenoid valve (202) and the high pressure solenoid valve (201), and the low pressure solenoid valve (202) and the high pressure solenoid valve (201). , 180, 181, 182, and comprises a low pressure shuttle valve (150, 151) and a high pressure shuttle valve (Shuttle valve, 155) for distinguishing the fuel by the pressure difference.
- the pressure of the fuel entering the fuel valve is divided into two stages of low load and high load, and the operation of the second stage is differentially opened according to the pressure by the low pressure solenoid valve 202 and the high pressure solenoid valve 201.
- the pressure of the fuel coming into the valve is made by the booster spindle to make it injected at high pressure at low load, and the fuel injection nozzle hole is opened differentially according to the pressure.
- the low pressure shuttle valve 150 and the high pressure shuttle valve 151 are provided before the fuel reaches the high pressure booster spindle 141 and the low pressure pressure booster spindle 143 through the fuel main passage 170.
- the low pressure shuttle valve 150 and the high pressure shuttle valve 151 are provided before the fuel reaches the high pressure booster spindle 141 and the low pressure pressure booster spindle 143 through the fuel main passage 170.
- the high pressure pressure booster spindle 141, the low pressure pressure booster spindle 143, the low pressure needle spring 132, and the high pressure needle spring are compared to the low pressure needle valve 120 and the high pressure needle valve 121.
- the high pressure solenoid valve spring 131 and the low pressure solenoid valve spring 134 having a force greater than the opening pressure are used to increase the opening pressure by using the high pressure lifting bush 180 and the high pressure lifting bush. 182 is supported, and the opening timing is controlled by the two-stage solenoid valves 201 and 202 for injection.
- the pressure is formed without opening at low pressure, which is due to the relative pressure of the low pressure booster spindle 141 and the high pressure booster spindle 143 to help the pressure rise, and the relative pressure can be adjusted to the desired high pressure. It is supposed to be.
- the low pressure needle valve 120 When the fuel is waiting for the low pressure needle valve 120 inside the nozzle 140 and the relative pressure is discharged to the low pressure outlet 171 through the low pressure shuttle valve 150 through the primary solenoid, the low pressure needle valve ( 120 is opened and the first injection through the low load nozzle 160 hole and the low pressure needle valve 120 is opened to wait for the force on the high pressure needle valve 121, the second solenoid valve is operated When discharged to the high-pressure outlet 172 through the high-pressure shuttle valve 151, the high-pressure needle valve 121 is opened to be injected through the high load nozzle 161 hole.
- the two solenoid valve relay two-stage fuel injection valve may supply fuel to the low pressure needle valve 120 and the high pressure needle valve 121 through the fuel passage 170.
- the low-pressure shuttle valve 150 and the high-pressure shuttle valve 151 fuel through the low pressure booster spindles 143 and the high pressure booster spindles 141 acts as an atmospheric pressure for low pressure
- the needle valve 120 and the high pressure needle valve 121 are to stand by at least the fuel pressure from the inlet.
- the low pressure solenoid 202 is operated so that the relative pressure acting on the low pressure auxiliary spindle 141 flows out to the outlet 171 through the lifting bush valve 181 for low pressure.
- the high pressure solenoid 201 is operated to actuate the high pressure auxiliary spinners 143.
- the high pressure nozzle nozzle hole 161 is opened to the machined nozzle by moving in conjunction with the high pressure needle valve 121 while exiting the outlet 172 through the lifting bush valve 181.
- the low pressure refers to the opening pressure at which fuel injection should be started
- the high pressure refers to the spring and relative to open the nozzle hole secondarily when a pressure exceeding the opening pressure is formed in the fuel valve.
- the pressure set by pressure.
- the high pressure relative pressure is discharged through the high pressure fuel outlet 172
- the pressure acting on the high pressure needle valve 121 is opened, the fuel is injected into the high pressure nozzle hole 161 and the fuel oil is sequentially sprayed into the high pressure nozzle hole 161 at the same time.
- the pressure in the fuel valve drops and when the low pressure spring 132 and the high pressure spring 133 are lower than the pressure to overcome elasticity sequentially or simultaneously, the low pressure needle valve 120 and the high pressure needle The valve 121 is pushed down to close the low pressure nozzle hole 160 and the high pressure nozzle hole 161, thereby ending one cycle of fuel injection.
- Figure 13 shows a conventional fuel injection pressure graph
- Figure 8b shows the injection of high pressure at a high pressure even at the initial low load showing the characteristics of the present invention in two stages, the fuel is injected at high pressure even at low load efficiency and Fuel economy is improved.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims (7)
- 디젤기관에서 실린더에 연료를 분사시켜주는 연료분사밸브에 있어서,연료밸브 안으로 들어오는 연료의 압력을, 엔진의 힘이 적게 필요한 저부하일 때와 엔진의 힘이 많이 필요한 고부하일때 2단으로 구분하는 구분수단;저부하일 때 개방되는 저압용 노즐홀과 고부하일 때 개방되는 고압용 노즐홀을 구비한 노즐;저부하인 경우 저압용 노즐홀만 개방하도록 하여 연료를 분사시키도록 하는 저압용 분사수단;고부하인 경우 저압용 노즐홀과 동시에 고압용 노즐홀을 개방하도록 하여 연료를 분사시키도록 하는 고압용 분사수단;을 포함하는 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 1 에 있어서,상기 구분수단은 저부하가 걸렸을 때 동작하여 저압용 노즐밸브만 개방하도록 하는 저압용 솔레노이드 밸브;고부하가 걸렸을 때 저압용 솔레노이드 밸브와 같이 동작하여 저압용 노즐밸브와 동시에 고압용 노즐밸브를 개방하도록 하는 고압용 솔레노이드 밸브;로 구성된 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 1 에 있어서,상기 저압용 분사수단은 저부하시 압력이 저압일 경우 동작하는 저압용 솔레노이드밸브와 연료통로로 연결되는 저압 니들 스프링;상기 저압 니들 스프링과 연결되는 저압용 압력 부스터 스핀들;상기 저압용 압력 부스터 스핀들과 연결되는 저압용 니들밸브;저압용 연료를 배출시켜주도록 하는 저압용 셔틀밸브;를 포함하여 구성되는 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 3 에 있어서,상기 저압용 분사수단은 연료주통로를 통하여 저압용 니들밸브와 고압용 니들밸브까지 연료압이 대기하고, 동시에 저압용 셔틀밸브와 고압용 셔틀밸브를 통한 연료는 저압용 부스터스핀들과 고압용 부스터스핀들에 영향을 주어 대기압으로 작용하여 저압용 니들밸브와 고압용 니들밸브가 주입구에서 들어온 연료압 이상으로 대기하도록 한 후 저부하의 필요압이 되었을 시 저압용 솔레노이드를 동작 시켜 저압용 부수터스핀들에 작용한 상대압이 리프팅 부쉬밸브를 통하여 배출구로 빠져나가면서 저압용 니들밸브와 연동되어 움직여 저압 노즐홀이 개방되어 연료가 분사되도록 하는 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 1 에 있어서,상기 고압용 분사수단은 고부하시 압력이 고압일 경우 동작하는 고압용 솔레노이드밸브와 연료통로로 연결되는 고압 니들 스프링;상기 고압 니들 스프링과 연결되는 고압용 압력 부스터 스핀들;상기 고압용 압력 부스터 스핀들과 연결되는 고압용 니들밸브;를 포함하여 구성되는 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 5 에 있어서,연료주통로(170)을 통하여 저압용 니들밸브(120)와 고압용 니들밸브(121)까지 연료압이 대기하고, 동시에 저압용 셔틀밸브(150)와 고압용 셔틀밸브(151)를 통한 연료는 저압용 부스터스핀들(143)과 고압용 부스터스핀들(141)에 영향을 주어 대기압으로 작용하여 저압용 니들밸브(120)와 고압용 니들밸브(121)가 주입구에서 들어온 연료압 이상으로 대기하도록 한 후 고부하의 필요압이 되었을 시 우선 저압용 솔레노이드 밸브(202)를 동작 시켜 저압용 부수터스핀들(141)에 작용한 상대압이 리프팅 부쉬밸브(181)를 통하여 배출구(171)로 빠져나가면서 저압용 니들밸브(120)와 연동되어 움직여 1차로 저압 노즐홀(160)이 개방되도록 하고, 고압용 솔레노이드 밸브(201)를 작동시켜 고압용 부수터스핀들(143)에 작용한 상대압이 리프팅 부쉬밸브(181)를 통하여 배출구(172)로 빠져나가면서 고압용 니들밸브(121)와 연동되어 움직여 고압 노즐홀(161)이 가공된 노즐로 개방 분사되도록 하는 것을 특징으로 하는 디젤엔진용 2단 연료분사밸브.
- 청구항 1 에 있어서,상기 디젤엔진용 2단 연료분사밸브는 고압 파이프와 연결되는 연료밸브블럭(Fuel valve block); 연료밸브 전체를 감싸는 노즐홀더(Nozzle holder); 연료통로 부쉬와 연결되며 고압에서 동작하는 고압 니들 스프링; 상기 고압 니들 스프링과 결합하며 저속, 저부하 압력에서 고압력으로 대기시켜주는 고압용 압력부스터 스핀들; 상기 고압용 압력부트서 스핀들과 결합되는 고압용 니들밸브; 상기 고압용 압력부트서 스핀들을 감싸는 저압 니들 스프링; 상기 저압 니들 스프링과 결합하여 고압용 압력부스터 스핀들이 관통되도록 하는 저압용 압력부스터 스핀들; 상기 저압용 압력부트서 스핀들과 결합되는 저압용 니들밸브; 연료를 실린더로 분사시키는 저압 노즐홀(Low pressure nozzle hole)과 고속, 고부하 압력에서 연료를 실린더로 분사시키는 고압 노즐홀(High pressure nozzle hole)이 가공되어 있는 노즐(Nozzle); 저압 및 고압에서의 분사시점을 조정해주는 저압용 솔레노이드 밸브(Solenoid valve) 및 고압용 솔레노이드 밸브; 상기 저압용 솔레노이드 및 고압용 솔레노이드 밸브와 결합되는 리프팅 부쉬밸브(Lifting bush valve); 연료를 압력차이로 구분해주는 저압용 셔틀밸브 및 고압용 셔틀밸브(Shuttle valve)를 포함하는 것을 특징으로 하는 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013506058A JP5740467B2 (ja) | 2010-04-21 | 2010-10-26 | ディーゼルエンジン用二段燃料噴射バルブ |
CN2010900015110U CN202883194U (zh) | 2010-04-21 | 2010-10-26 | 两个电磁阀相继的柴油发动机用二段燃料喷射阀 |
EP10850315.2A EP2562410B1 (en) | 2010-04-21 | 2010-10-26 | Two solenoid valve relay two-stage fuel injection valve for diesel engines |
US13/642,276 US8973554B2 (en) | 2010-04-21 | 2010-10-26 | Two solenoid valve relay two-stage fuel injection valve for diesel engines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0036790 | 2010-04-21 | ||
KR1020100036790A KR101116504B1 (ko) | 2010-04-21 | 2010-04-21 | 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011132832A1 true WO2011132832A1 (ko) | 2011-10-27 |
Family
ID=44834339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/007363 WO2011132832A1 (ko) | 2010-04-21 | 2010-10-26 | 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8973554B2 (ko) |
EP (1) | EP2562410B1 (ko) |
JP (1) | JP5740467B2 (ko) |
KR (1) | KR101116504B1 (ko) |
CN (1) | CN202883194U (ko) |
WO (1) | WO2011132832A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11713740B1 (en) * | 2022-02-24 | 2023-08-01 | Harbin Engineering University | High-pressure common rail fuel injector capable of achieving highly stable injection based on throttling damping accommodating effect |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2829718B1 (en) * | 2013-07-22 | 2016-07-13 | Delphi International Operations Luxembourg S.à r.l. | Injector Arrangement |
CN104912707A (zh) * | 2015-06-23 | 2015-09-16 | 哈尔滨工程大学 | 双阀协同电磁控制喷油器 |
CN104929834B (zh) * | 2015-06-23 | 2017-11-17 | 哈尔滨工程大学 | 同步双阀电磁控制喷油器 |
NL1041770B1 (en) * | 2016-03-18 | 2017-10-03 | Cereus Tech B V | Improved fuel injection devices. |
RU2648313C1 (ru) * | 2017-04-20 | 2018-03-23 | федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" | Способ управления подачей топлива и устройство подачи топлива |
US11008957B2 (en) | 2019-06-05 | 2021-05-18 | Caterpillar Inc. | Spill valve assembly for improved minimum delivery capability in fuel system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4546739A (en) * | 1983-08-10 | 1985-10-15 | Diesel Kiki Co., Ltd. | Fuel injection valve with variable discharge area of nozzle holes |
JP2002130086A (ja) * | 2000-10-23 | 2002-05-09 | Bosch Automotive Systems Corp | 二段噴射燃料噴射弁 |
US20030066509A1 (en) * | 2001-10-09 | 2003-04-10 | Scott Shafer | Fuel injector having dual mode capabilities and engine using same |
US20070246561A1 (en) * | 2006-03-31 | 2007-10-25 | Gibson Dennis H | Twin needle valve dual mode injector |
JP2008261309A (ja) * | 2007-04-13 | 2008-10-30 | Toyota Motor Corp | 内燃機関の燃料噴射弁 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002188541A (ja) | 2000-12-22 | 2002-07-05 | Mitsubishi Heavy Ind Ltd | 燃料噴射装置 |
CN100371583C (zh) * | 2003-06-04 | 2008-02-27 | 株式会社博世汽车系统 | 燃料喷射器 |
DE10334209A1 (de) * | 2003-07-26 | 2005-02-10 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine |
DE102004015360A1 (de) * | 2004-03-30 | 2005-10-20 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
JP2005320904A (ja) * | 2004-05-10 | 2005-11-17 | Denso Corp | 燃料噴射弁 |
JP4229049B2 (ja) * | 2004-11-22 | 2009-02-25 | 株式会社デンソー | 燃料噴射装置 |
JP4535037B2 (ja) * | 2006-02-08 | 2010-09-01 | 株式会社デンソー | インジェクタおよび燃料噴射装置 |
KR100742512B1 (ko) * | 2006-09-20 | 2007-07-24 | 현대중공업 주식회사 | 디젤엔진용 2단 2쵸커 연료분사밸브 |
JP4265645B2 (ja) * | 2006-11-07 | 2009-05-20 | トヨタ自動車株式会社 | 燃料噴射装置 |
JP4331225B2 (ja) * | 2007-04-10 | 2009-09-16 | トヨタ自動車株式会社 | 内燃機関の燃料噴射制御装置 |
JP2009019615A (ja) * | 2007-07-13 | 2009-01-29 | Toyota Motor Corp | 燃料噴射弁及び内燃機関の制御装置 |
JP4772016B2 (ja) * | 2007-09-07 | 2011-09-14 | トヨタ自動車株式会社 | 内燃機関の燃料噴射制御装置 |
US7685990B2 (en) * | 2007-11-29 | 2010-03-30 | Delphi Technologies, Inc. | Dual mode combustion apparatus and method |
KR101058713B1 (ko) * | 2010-03-08 | 2011-08-22 | 현대중공업 주식회사 | 솔레노이드밸브와 셔틀밸브를 가진 디젤엔진용 2단 연료분사밸브 |
-
2010
- 2010-04-21 KR KR1020100036790A patent/KR101116504B1/ko not_active IP Right Cessation
- 2010-10-26 US US13/642,276 patent/US8973554B2/en active Active
- 2010-10-26 WO PCT/KR2010/007363 patent/WO2011132832A1/ko active Application Filing
- 2010-10-26 JP JP2013506058A patent/JP5740467B2/ja not_active Expired - Fee Related
- 2010-10-26 EP EP10850315.2A patent/EP2562410B1/en not_active Not-in-force
- 2010-10-26 CN CN2010900015110U patent/CN202883194U/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4546739A (en) * | 1983-08-10 | 1985-10-15 | Diesel Kiki Co., Ltd. | Fuel injection valve with variable discharge area of nozzle holes |
JP2002130086A (ja) * | 2000-10-23 | 2002-05-09 | Bosch Automotive Systems Corp | 二段噴射燃料噴射弁 |
US20030066509A1 (en) * | 2001-10-09 | 2003-04-10 | Scott Shafer | Fuel injector having dual mode capabilities and engine using same |
US20070246561A1 (en) * | 2006-03-31 | 2007-10-25 | Gibson Dennis H | Twin needle valve dual mode injector |
JP2008261309A (ja) * | 2007-04-13 | 2008-10-30 | Toyota Motor Corp | 内燃機関の燃料噴射弁 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11713740B1 (en) * | 2022-02-24 | 2023-08-01 | Harbin Engineering University | High-pressure common rail fuel injector capable of achieving highly stable injection based on throttling damping accommodating effect |
Also Published As
Publication number | Publication date |
---|---|
KR20110117374A (ko) | 2011-10-27 |
EP2562410A1 (en) | 2013-02-27 |
EP2562410A4 (en) | 2014-07-30 |
CN202883194U (zh) | 2013-04-17 |
KR101116504B1 (ko) | 2012-02-28 |
JP2013525672A (ja) | 2013-06-20 |
US20130037004A1 (en) | 2013-02-14 |
JP5740467B2 (ja) | 2015-06-24 |
US8973554B2 (en) | 2015-03-10 |
EP2562410B1 (en) | 2017-07-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2011132832A1 (ko) | 디젤엔진용 2 솔레노이드밸브 릴레이 2단 연료분사 밸브 | |
WO2011155670A1 (ko) | 디젤엔진과 가스엔진용 하이브리드형 노즐을 구비한 이중 연료분사밸브장치 | |
WO2012002620A1 (ko) | 펌핑 기능 노즐을 가진 디젤엔진과 가스엔진용 이중 연료분사밸브 | |
WO2012020999A2 (ko) | 2단 연료 분사 밸브 | |
US4488531A (en) | Plural intake system for supercharged engine | |
JP2007154877A (ja) | 内燃機関におけるnox排出低減方法およびそれに適する内燃機関 | |
WO2011111953A1 (ko) | 솔레노이드밸브와 셔틀밸브를 가진 디젤엔진용 2단 연료분사밸브 | |
JPH05312108A (ja) | 内燃機関における燃料気化を促進するための方法と装置 | |
WO2012057530A2 (ko) | 내연기관용 연료분사밸브 | |
US5718195A (en) | Intake pipe for internal combustion engine | |
WO2010050703A2 (ko) | 디젤엔진 연료분사펌프의 캐비테이션 손상방지장치 | |
JPS61112773A (ja) | 燃料噴射装置付エンジン | |
WO2012011650A1 (ko) | 2중 연료분사밸브 | |
WO2012091367A2 (ko) | 전자제어 연료분사밸브 | |
US5060602A (en) | Device for controlling or monitoring the start of introduction under pressure, of a fuel-air mixture following scavenging of an engine cylinder by air | |
EP0105934A1 (en) | Intake system of an internal-combustion engine | |
US10947891B2 (en) | Internal combustion engine and method of operating an internal combustion engine | |
WO2021006416A1 (ko) | 기화기 | |
WO2013062343A2 (ko) | 디젤엔진의 연료분사노즐 | |
WO2013094845A1 (ko) | 와류 분사형 노즐을 구비한 커먼 레일 인젝터 | |
WO2010044517A1 (ko) | 볼텍스 튜브를 이용한 엔진시스템 | |
WO2011145800A1 (ko) | 솔레노이드와 시트형 스풀을 이용한 전자식 연료분사밸브 | |
JPH0742422U (ja) | 排気ガス再循環装置 | |
WO2016163703A1 (ko) | 선택적 내연기관 과급기 | |
SU1326761A1 (ru) | Топливна система |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201090001511.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10850315 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013506058 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13642276 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2010850315 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010850315 Country of ref document: EP |