CN205206998U - Electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost - Google Patents
Electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost Download PDFInfo
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- CN205206998U CN205206998U CN201520970816.7U CN201520970816U CN205206998U CN 205206998 U CN205206998 U CN 205206998U CN 201520970816 U CN201520970816 U CN 201520970816U CN 205206998 U CN205206998 U CN 205206998U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model aims to provide an electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost, divide and the injection apparatus casing including pressure boost part, control section, nozzle portion. The control intracavity adopts the voltol oil to build pressure messenger needle valve and lifts up, and the response is quick, jet -propelled flow control accuracy, control the oily draining oil circuit solenoid valve body upper portion of flowing through, play the cooling action, improve electromagnetic valve work's stability, adopt the pressure boost piston to carry out the pressure boost to the gas, adopt two solenoid valves separately to control gas pressure boost and gas jet process, jet -propelled process can be between pressure boost or non - pressure boost mode nimble the switching, pressurization elder generation delays and afterwards worries, can realize variably spouting the law, satisfies the requirement of engine different work condition to gas jet pressure, pressure boost long sealed even piece of some adoptions and big oil pocket prevent pumping chamber's gas leakage, and the design has sealed clitellum between needle valve and the needle valve base, introduce the partial oily sealed oil seal gas of doing of controlling, prevent needle valve intracavity gas leakage.
Description
Technical field
The utility model relates to a kind of motor, specifically the fuel gas ejecting device of duel fuel engine.
Background technique
Along with the continuous consumption of fossil fuel and the increasingly stringent of engine exhaust regulation, the development of motor is faced with the dual-pressure of energy crisis and environmental pollution problem, adopts alternative fuel to be the effective means simultaneously solving energy problem and environmental pollution problem.Rock gas, petroleum gas etc., with its aboundresources, the advantage such as cheap, combustion cleaning, calorific value are large, become the main substitute fuel of current internal-combustion engine.
Current in-cylinder direct injection gas injection system, control the motion of needle-valve piston mainly through the integrated high-speed electromagnetic valve in inside thus realize the open and close of fuel gas injection valve, can realize fuel gas injection timing, jet fixing quantity, there is good effects of energy saving and emission reduction, but there are some problems in it: one, in order to improve oil in engine cylinder, gas mixability, air jet system improves constantly fuel gas injection pressure requirements, compare liquid fuel, combustion gas is according to high-pressure service pump supercharging, from pump end to injection apparatus transmitting procedure to pipeline configuration, requirement of strength is higher and gas leakage is serious, its two, along with the motion of needle-valve, combustion gas is upwards leaked along pintle nozzle match-ing parts gap, leaks combustion gas and enters control chamber and cause fuel gas injection pressure and injection rate to reduce, have a strong impact on air jet system working stability.
Summary of the invention
The purpose of this utility model is to provide and can realizes fuel gas injection amount, jet Time Precise Controlling, jet process can switch between supercharging or non pressurized two kinds of patterns, thus reaches the supercharging No leakage electromagnetic control type fuel gas ejecting device of the adjustable object of whiff pressure.
The purpose of this utility model is achieved in that
The utility model supercharging No leakage electromagnetic control type fuel gas ejecting device, is characterized in that: comprise compression portion, control section and nozzle segment;
Described compression portion comprises boost electromagnetic valve, suction valve, charged piston cover, charged piston, described boost electromagnetic valve comprises electromagnetic valve body, solenoid valve valve rod, baffle plate, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve armature is arranged on by supercharging electromagnet, supercharging coil is wound around in supercharging electromagnet, solenoid valve valve rod one end is fixed by supercharging stop ring and solenoid valve armature, the other end runs through solenoid valve seat, and be fixed with baffle plate at the rear of this end, on solenoid valve valve rod, cover has solenoid valve spring, the two ends of solenoid valve spring withstand on solenoid valve seat and solenoid valve valve rod respectively, charged piston puts end and is arranged in solenoid valve seat, charged piston is arranged in charged piston cover, charged piston upper end, servo oil pocket is formed between charged piston cover and solenoid valve seat, pumping chamber is formed between charged piston lower end and charged piston overlap, on charged piston, cover has charged piston spring, the two ends of charged piston spring withstand between the below of charged piston upper end and charged piston overlap respectively, suction valve comprises inlet valve spindle, inlet valve spring, inlet valve seat, suction valve big spring seat, suction valve submissile spring abutment, inlet valve seat is fixed in charged piston cover, suction valve big spring seat and suction valve submissile spring abutment are all positioned in inlet valve seat, the inner chamber of inlet valve seat is separated into left chamber and right chamber by suction valve big spring seat, the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, the afterbody of air inlet valve lever stretches in inlet valve seat and is also connected with one-way valve submissile spring abutment through suction valve big spring seat, suction valve Returnning spring is between suction valve big spring seat and suction valve submissile spring abutment and be placed on air inlet valve lever, suction port is offered in charged piston cover, suction port communicates with the left chamber of inlet valve seat, communicate with pumping chamber outside air inlet valve lever head,
Described control section comprise control solenoid valve, conical surface seal seat under conical surface sealing seat, valve rod on valve rod, described control solenoid valve comprises control electromagnet, control coil, control armature, control valve rod, control valve body, control valve body, on valve rod, under conical surface sealing seat and valve rod, conical surface seal seat sets gradually from top to bottom and is installed in injection apparatus body, injection apparatus body upper end portion is arranged in charged piston cover, controlling electromagnet is arranged in control valve body, control coil is wrapped in and controls on electromagnet, controlling armature is positioned at below control electromagnet, control valve rod one end to fix with control armature by controlling stop ring, the other end runs through conical surface sealing seat on valve rod and under stretching to valve rod in conical surface seal seat, control valve rod is provided with sealing cone and the lower seal conical surface, upper sealing cone matches with conical surface sealed base on valve rod, the lower seal conical surface matches with conical surface seal base under valve rod, control valve rod arranges low pressure oil endless belt above upper sealing cone, control to arrange high pressure oil endless belt below valve rod upper-lower seal face, valve rod arranges drain tap in conical surface sealed base, under valve rod, in conical surface seal base, high-pressure oil passage entrance is set, low pressure oil endless belt is communicated with drain tap, high pressure oil endless belt is communicated with high-pressure oil passage entrance, control cover on valve rod and have control spring, the two ends of control spring withstand on respectively and to control on valve rod and valve rod between conical surface sealed base,
Described nozzle segment comprises needle-valve, needle-valve Returnning spring, needle-valve base, needle-valve base is fixed on below injection apparatus body, needle-valve upper end portion to stretch under valve rod in conical surface seal base, needle-valve lower end part is in needle-valve base, needle-valve is arranged ring step, part on needle-valve below ring step and formation control chamber between injection apparatus body, part cover needle-valve is positioned at above ring step has needle-valve Returnning spring, needle-valve chamber and seal band is formed respectively between needle-valve and needle-valve base, the gas inlet passage communicated with needle-valve chamber and the oil input channel communicated with seal band are set in needle-valve base, gas inlet passage is through injection apparatus body, conical surface seal base under valve rod, conical surface sealed base on valve rod, communicate with pumping chamber, oil input channel communicates with the high-pressure oil passage entrance in conical surface seal base under valve rod through injection apparatus body.
The utility model can also comprise:
1, described solenoid valve valve rod is provided with annular oil band, solenoid valve seat is provided with servo oil oil input channel and servo oil draining road, when solenoid valve valve rod withstands on baffle plate, annular oil band communicates with servo oil draining road and servo oil pocket, after solenoid valve valve rod is moved to the left with solenoid valve armature, annular oil band communicates with servo oil oil input channel and servo oil pocket.
Advantage of the present utility model is: supercharging No leakage electromagnetic control type fuel gas ejecting device of the present utility model adopts dual-coil electromagnetic valve to control jet process, an electromagnetic valve combustion gas supercharging, an electromagnetic valve fuel gas injection, high pressure fuel is adopted to build pressure in control chamber, by the oil-feed of electromagnetic valve high pressure fuel, draining thus control the lifting of needle-valve, take a seat, fuel gas injection response is fast, and jet amount controls accurately; Adopt charged piston to carry out supercharging to combustion gas, pressurization is first slow rear anxious, and can switch flexibly between supercharging or non pressurized pattern, can realize variable jet rule, effectively improve the Economy of engine power performance and fuel; Electromagnetic valve body is designed with cooling oil path, and cooling oil path is communicated with control chamber, takes away heat to reduce solenoid valve portion temperature, ensure that the reliability and stability of electromagnetic valve work by oil-feed, draining oil circulation; Seal band is had between needle-valve and pintle valve seat, introducing portion controls oil as sealing oil sealing combustion gas, effectively can prevent gas leakage, and the control oil simultaneously in control chamber and the sealing oil at needle-valve place adopt same oil, oil pressure is equal, can effectively ensure to control oil, sealing oil without static leakage; Adopt long sealing strip and large oil pocket to prevent gas leakage between charged piston and charged piston cover couple, improve the stability of air jet system work.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 a is the utility model compression portion structural representation, and Fig. 2 b is the structural representation that annular oil band communicates with servo oil draining road, and Fig. 2 c is the structural representation that annular oil band communicates with servo oil oil input channel;
Fig. 3 a is the utility model control section structural representation, and Fig. 3 b is the schematic diagram that upper sealing cone separates with conical surface sealed base on valve rod, and Fig. 3 c is the schematic diagram that on upper sealing cone and valve rod, conical surface sealed base is fitted;
Fig. 4 is nozzle segment structural representation.
Embodiment
Below in conjunction with accompanying drawing citing, the utility model is described in more detail:
Composition graphs 1 ~ 4, supercharging No leakage electromagnetic control type fuel gas ejecting device of the present utility model forms primarily of compression portion 1, control section 2, nozzle segment 3 and injection apparatus body 4.Compression portion 1 mainly comprises boost electromagnetic valve I, suction valve II, charged piston cover 19, charged piston 20, solenoid valve seat 21 etc.Wherein, the valve rod 8 of boost electromagnetic valve is designed with annular oil band 7, solenoid valve seat 21 is designed with servo oil oil input channel 28, servo oil draining road 5.When boost electromagnetic valve is not energized, annular oil band 7 is communicated with draining road 5 and servo oil pocket 22; During boost electromagnetic valve energising, annular oil band 7 is communicated with oil input channel 28 and servo oil pocket 22.Suction valve is one-way valve, and when combustion gas enters suction valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18; When charged piston 20 is descending, when in pumping chamber 18, gaseous-pressure raises, suction valve cuts out.Control section 2 mainly comprise control solenoid valve III, conical surface seal seat 37, control chamber 40 etc. under conical surface sealing seat 35, valve rod on valve rod.Wherein, the valve rod 32 of control solenoid valve is designed with two sealing cones and two Sheng oil ring bands, upper sealing cone 45 respectively, the lower seal conical surface 44, the high pressure oil endless belt 43 that is positioned at the low pressure oil endless belt 46 above sealing cone 45 and is positioned at below the lower seal conical surface 44, low pressure oil endless belt 46 is communicated with drain tap 33 by oil duct, and high pressure oil endless belt 43 is communicated with high-pressure oil passage entrance 36 by oil duct.When control solenoid valve is not energized, solenoid valve valve rod 32 is taken a seat, and the lower seal conical surface 44 cuts out high pressure oil endless belt 43, and upper sealing cone 45 is opened, and control chamber 40 is communicated with drain tap 33; When controlling solenoid valve energising, solenoid valve valve rod 32 lifts, and upper sealing cone 45 closes low pressure oil endless belt 46, and the lower seal conical surface 44 is opened, and high pressure oil enters control chamber 40.Nozzle segment mainly comprises needle-valve 39, seal band 53, nozzle cage 54, needle-valve base 55, needle-valve chamber 57 etc.Needle-valve 39 is designed with ring step, below ring step, formation control chamber 40 between needle-valve 39 and injection apparatus body 4.Form needle-valve chamber 57 between needle-valve 39 and needle-valve base 55, above needle-valve chamber 57, between needle-valve 39 and needle-valve base 55, be designed with seal band 53, control oil by oil duct introducing portion and seal combustion gas to seal band 53.
Supercharging No leakage electromagnetic control type fuel gas ejecting device of the present utility model forms primarily of compression portion 1, control section 2, nozzle segment 3 and injection apparatus housing 4.Injection apparatus housing 4 there are high voltage control oil-in 36 and drain tap 33.
Compression portion 1 is positioned at above injection apparatus body 4, and the two employing is threaded.Compression portion 1 mainly comprises boost electromagnetic valve I, suction valve II, charged piston spring 11, charged piston cover 19, charged piston 20, solenoid valve seat 21 etc.Wherein, boost electromagnetic valve is made up of solenoid valve spring 6, solenoid valve valve rod 8, spring washer 9, baffle plate 10, solenoid valve seat 21, armature 23, electromagnetic valve body 24, stop ring 25, coil 26, electromagnet 27 etc.Suction valve mainly comprises inlet valve seat 14, inlet valve spindle 15, inlet valve spring 16 etc.The valve rod 8 of increasing solenoid valve is designed with annular oil band 7, solenoid valve seat 21 is designed with servo oil oil input channel 28, the oily draining road 5 of servo.Solenoid valve valve rod 8 one end is fixed on solenoid valve armature 23 by stop ring 25, can with armature 23 side-to-side movement, and the other end runs through solenoid valve seat 21, is pressed on baffle plate 10 under the effect of solenoid valve spring 6 pretightening force.Solenoid valve seat 21 can play position-limiting action to the lift of electromagnetism valve rod 8, and it is designed with oil duct, can flow through boost electromagnetic valve by guide portion servo oil, plays cooling electric magnet valve and reduces the effect of the shock and vibration of solenoid valve armature 23 and valve rod 8 side-to-side movement.Form servo oil pocket 22 between compression face and piston sleeve 19, solenoid valve seat 21 above charged piston 20 major part, below charged piston 20 microcephaly, between compression face and piston sleeve 19, form pumping chamber 18.Suction valve is one-way valve, and its Returnning spring 16 pretightening force is less, and cracking pressure is low, and when combustion gas enters suction valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18; When charged piston 20 is descending, when in pumping chamber 18, gaseous-pressure raises, suction valve cuts out.Charged piston 20 and charged piston cover 19 are a pair precision pair, and matching gap is little and contact length large, effectively can prevent from the combustion gas in pumping chamber 18 is altered, and prevent the fuel leakage in servo oil pocket 22; The cavity 12 that between the groove of charged piston 20 major part and piston sleeve 19, formation one is large, even if having Some gases, fuel leakage enter cavity 12, in chamber, oil, gas mixing energy hinder it to interpenetrate further, the oil film that charged piston 20 surface is formed is in dynamic balance state in piston movement process, can prevent gas leakage further.
Control section 2 is positioned in the middle of injection apparatus body 4, and each several part adopts locating stud to fix.Control section 2 mainly comprise control solenoid valve III, conical surface seal seat 37, control chamber 40 etc. under conical surface sealing seat 35, valve rod on valve rod.Wherein, control solenoid valve and mainly comprise electromagnet 29, coil 30, armature 31, solenoid valve valve rod 32, solenoid valve spring 34, stop ring 48, electromagnetic valve body 49 etc.Coil 30 and electromagnet 29 are arranged on electromagnetic valve body 49 li, and armature 31 is positioned at below electromagnet 29.Solenoid valve valve rod 32 is designed with two sealing cones and two Sheng oil ring bands, upper sealing cone 45 respectively, the lower seal conical surface 44, the high pressure oil endless belt 43 that is positioned at the low pressure oil endless belt 46 above sealing cone 45 and is positioned at below the lower seal conical surface 44, low pressure oil endless belt 46 is communicated with drain tap 33 by oil duct, and high pressure oil endless belt 43 is communicated with high-pressure oil passage entrance 36 by oil duct.Solenoid valve valve rod 32 one end is fixed on solenoid valve armature 31 by stop ring 48, can move with armature 31, the other end runs through conical surface sealed base 35 on the valve rod below solenoid valve armature 31, to be pressed under valve rod on conical surface seal base 37 under the effect of solenoid valve spring 34 pretightening force.Solenoid valve spring 34 is fixed on solenoid valve valve rod 32 and valve rod between conical surface sealed base 35, and be stuck in the groove of conical surface sealed base 35 on valve rod, on valve rod, conical surface sealed base 35 can also play the position-limiting action to valve rod 32 lift.Sealed base 35 is designed with oil duct to valve rod, the fuel oil at low pressure oil endless belt 25 place can be guided to flow through control solenoid valve, flow to low pressure drain tap 33, heat is taken away under fuel flow effect, cooling electromagnetic valve body, and reduce the shock and vibration that solenoid valve armature 31 moves up and down, thus improve the stability of electromagnetic valve work.Under valve rod, conical surface seal base 37 is designed with many oil ducts and air flue, is respectively used to connect high pressure oil endless belt 43 and controls oil-in 36, fluid guided into control chamber 32, part is controlled oil guide seal band 53 into, needle-valve chamber 57 is introduced in combustion gas.
Nozzle segment 3 is positioned at below injection apparatus body 4, and the two employing is threaded.Nozzle segment comprises needle-valve 39, spring washer 38, needle-valve Returnning spring 41, spring seat 42, seal ring 50, seal band 53, nozzle cage 54, needle-valve base 55, needle-valve chamber 57 etc.Needle-valve 39 is designed with ring step, below ring step, formation control chamber 40 between needle-valve 39 and injection apparatus body 4.Needle-valve 39 is pressed on needle-valve base 55 under the pretightening force effect of needle valve spring 41, forms needle-valve chamber 57 between needle-valve 39 and needle-valve base 55, above needle-valve chamber 57, is designed with seal band 53 between needle-valve 39 and needle-valve base 55.Be designed with seal ring 50 between nozzle cage 54 and injection apparatus body 4, prevent high temperature in cylinder, the combustion gas of high pressure enters in injection apparatus.Needle-valve base 55 side has gas inlet passage 58, annular air inlet duct 59, high-pressure gas is introduced needle-valve chamber 57, to meet air jet system air inlet requirement; Opposite side has annular oil-feed tank 51, oil input channel 52, part is controlled oil and introduces seal band 53.Injection apparatus of the present utility model sprays combustion gas, what needle-valve chamber 57 place introduced is combustion gas, lift in needle-valve 39 work and combustion gas easily occurs in process of taking a seat and to move with needle-valve 39 and upwards leak, when the combustion gas of leaking enters control chamber 40, the compressibility due to combustion gas can have a strong impact on the jet characteristic of fuel gas ejecting device.In order to head it off, between fuel gas ejecting device needle-valve 39 of the present utility model and needle-valve base 55, have seal band 53, introduce and control oil seal combustion gas, effectively can prevent gas leakage.In addition, the control oil in control chamber 40 and the sealing oil in seal band 53 adopt same oil, and the upper and lower oil pressure of needle-valve is equal, can effectively ensure to control oil, sealing oil without static leakage.
During engine operation, the input signal of control unit pick-up transducers, drives boost electromagnetic valve, controls solenoid valve work, thus control respectively combustion gas supercharging in pumping chamber 18, air inlet and control chamber 32 build pressure, pressure release.When boost electromagnetic valve power-off, solenoid valve valve rod 8 withstands on right-hand apron 10 under the effect of solenoid valve spring 6, now, annular oil band 7 is communicated with draining road 5 and servo oil pocket 22, as shown in Fig. 2 (b), in servo oil pocket 22, servo oil flows to low pressure drain tap, servo oil pocket 22 pressure reduces, and charged piston 20 is up under the effect of Returnning spring 11, and in pumping chamber 18, gaseous-pressure declines, inlet valve spindle 15 is backed down in combustion gas, starts air inlet; When increasing solenoid valves, electromagnet 27 attracts armature 23, and armature 23 is with moving electromagnetic valve valve rod 8 to left movement, now, annular oil band 7 is communicated with oil input channel 28 and servo oil pocket 22, as shown in Fig. 2 (c), servo oil enters servo oil pocket 22, and servo oil pocket 22 pressure raises, promote charged piston 20 descending, pumping chamber 18 internal pressure has just started to raise, and namely suction valve cuts out, and charged piston 20 continues descending to combustion gas supercharging in pumping chamber 18.In pumping chamber 18, combustion gas enters needle-valve chamber 57 by air flue.When controlling solenoid valve power-off, solenoid valve valve rod 32 is in the state of taking a seat under the effect of solenoid valve spring 34, the lower seal conical surface 44 cuts out high pressure oil endless belt 43, and upper sealing cone 45 is opened, as shown in Fig. 3 (b), now high-pressure oil passage turns off, control chamber 40 is communicated with drain tap 33, and control chamber 40 internal pressure is low, and needle-valve 39 is pressed on pintle valve seat 55 under the effect of needle valve spring 41, close spray orifice 56, injection apparatus is not jet; When controlling solenoid valve energising, electromagnet 29 attracts armature 31, armature 31 is with moving electromagnetic valve valve rod 32 to lift, and upper sealing cone 45 closes low pressure oil endless belt 46, and the lower seal conical surface 44 is opened, as shown in Fig. 3 (c), now low pressure oil way turns off, and control chamber 40 is communicated with high-pressure oil passage, and high pressure oil enters control chamber 40 and acts on the ring step of needle-valve 39, needle-valve 39 lifts rapidly opens spray orifice 56, and injection apparatus starts jet.
From above-mentioned working procedure, the jet process of supercharging No leakage electromagnetic control type fuel gas ejecting device is controlled by dual-coil electromagnetic valve, has response fast, to the feature that jet amount accurately controls.According to control signal, the power-off of compression portion solenoid valve, combustion gas is not pressurized, during solenoid valves, combustion gas is pressurized, and jet pressure improves, can realize combustion gas supercharging or non pressurized pattern any switching laws, spray characteristic is adjustable flexibly, can meet the requirement of Under Different Work Condition of Engine to fuel gas injection pressure.Compression portion adopts the long sealing strip of couple to strengthen oil pocket and prevents gas leakage, nozzle segment adopts fuel sealing combustion gas all effectively can prevent gas leakage, in addition, oil and the oily fuel oil static leakage that effectively can prevent control chamber and seal band of sealing oil employing same is controlled.Therefore, the utility model can make motor meet the emission regulation demands of increasingly stringent, effectively improves its power character, Economy and reliability.
Claims (2)
1. supercharging No leakage electromagnetic control type fuel gas ejecting device, is characterized in that: comprise compression portion, control section and nozzle segment;
Described compression portion comprises boost electromagnetic valve, suction valve, charged piston cover, charged piston, described boost electromagnetic valve comprises electromagnetic valve body, solenoid valve valve rod, baffle plate, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve armature is arranged on by supercharging electromagnet, supercharging coil is wound around in supercharging electromagnet, solenoid valve valve rod one end is fixed by supercharging stop ring and solenoid valve armature, the other end runs through solenoid valve seat, and be fixed with baffle plate at the rear of this end, on solenoid valve valve rod, cover has solenoid valve spring, the two ends of solenoid valve spring withstand on solenoid valve seat and solenoid valve valve rod respectively, charged piston puts end and is arranged in solenoid valve seat, charged piston is arranged in charged piston cover, charged piston upper end, servo oil pocket is formed between charged piston cover and solenoid valve seat, pumping chamber is formed between charged piston lower end and charged piston overlap, on charged piston, cover has charged piston spring, the two ends of charged piston spring withstand between the below of charged piston upper end and charged piston overlap respectively, suction valve comprises inlet valve spindle, inlet valve spring, inlet valve seat, suction valve big spring seat, suction valve submissile spring abutment, inlet valve seat is fixed in charged piston cover, suction valve big spring seat and suction valve submissile spring abutment are all positioned in inlet valve seat, the inner chamber of inlet valve seat is separated into left chamber and right chamber by suction valve big spring seat, the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, the afterbody of air inlet valve lever stretches in inlet valve seat and is also connected with one-way valve submissile spring abutment through suction valve big spring seat, suction valve Returnning spring is between suction valve big spring seat and suction valve submissile spring abutment and be placed on air inlet valve lever, suction port is offered in charged piston cover, suction port communicates with the left chamber of inlet valve seat, communicate with pumping chamber outside air inlet valve lever head,
Described control section comprise control solenoid valve, conical surface seal seat under conical surface sealing seat, valve rod on valve rod, described control solenoid valve comprises control electromagnet, control coil, control armature, control valve rod, control valve body, control valve body, on valve rod, under conical surface sealing seat and valve rod, conical surface seal seat sets gradually from top to bottom and is installed in injection apparatus body, injection apparatus body upper end portion is arranged in charged piston cover, controlling electromagnet is arranged in control valve body, control coil is wrapped in and controls on electromagnet, controlling armature is positioned at below control electromagnet, control valve rod one end to fix with control armature by controlling stop ring, the other end runs through conical surface sealing seat on valve rod and under stretching to valve rod in conical surface seal seat, control valve rod is provided with sealing cone and the lower seal conical surface, upper sealing cone matches with conical surface sealed base on valve rod, the lower seal conical surface matches with conical surface seal base under valve rod, control valve rod arranges low pressure oil endless belt above upper sealing cone, control to arrange high pressure oil endless belt below valve rod upper-lower seal face, valve rod arranges drain tap in conical surface sealed base, under valve rod, in conical surface seal base, high-pressure oil passage entrance is set, low pressure oil endless belt is communicated with drain tap, high pressure oil endless belt is communicated with high-pressure oil passage entrance, control cover on valve rod and have control spring, the two ends of control spring withstand on respectively and to control on valve rod and valve rod between conical surface sealed base,
Described nozzle segment comprises needle-valve, needle-valve Returnning spring, needle-valve base, needle-valve base is fixed on below injection apparatus body, needle-valve upper end portion to stretch under valve rod in conical surface seal base, needle-valve lower end part is in needle-valve base, needle-valve is arranged ring step, part on needle-valve below ring step and formation control chamber between injection apparatus body, part cover needle-valve is positioned at above ring step has needle-valve Returnning spring, needle-valve chamber and seal band is formed respectively between needle-valve and needle-valve base, the gas inlet passage communicated with needle-valve chamber and the oil input channel communicated with seal band are set in needle-valve base, gas inlet passage is through injection apparatus body, conical surface seal base under valve rod, conical surface sealed base on valve rod, communicate with pumping chamber, oil input channel communicates with the high-pressure oil passage entrance in conical surface seal base under valve rod through injection apparatus body.
2. supercharging No leakage electromagnetic control type fuel gas ejecting device according to claim 1, it is characterized in that: described solenoid valve valve rod is provided with annular oil band, solenoid valve seat is provided with servo oil oil input channel and servo oil draining road, when solenoid valve valve rod withstands on baffle plate, annular oil band communicates with servo oil draining road and servo oil pocket, after solenoid valve valve rod is moved to the left with solenoid valve armature, annular oil band communicates with servo oil oil input channel and servo oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970816.7U CN205206998U (en) | 2015-11-27 | 2015-11-27 | Electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970816.7U CN205206998U (en) | 2015-11-27 | 2015-11-27 | Electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205206998U true CN205206998U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520970816.7U Withdrawn - After Issue CN205206998U (en) | 2015-11-27 | 2015-11-27 | Electromagnetic control of leakage formula fuel gas jetting device is not had in pressure boost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205206998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508082A (en) * | 2015-11-27 | 2016-04-20 | 哈尔滨工程大学 | Pressurized leakage-free electromagnetically-controlled gas injection device |
| CN107165745A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of through type mixed admission |
| CN109555620A (en) * | 2018-10-22 | 2019-04-02 | 中船动力研究院有限公司 | Fuel gas injection valve and its working method with automatic safety device |
-
2015
- 2015-11-27 CN CN201520970816.7U patent/CN205206998U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508082A (en) * | 2015-11-27 | 2016-04-20 | 哈尔滨工程大学 | Pressurized leakage-free electromagnetically-controlled gas injection device |
| CN105508082B (en) * | 2015-11-27 | 2018-07-24 | 哈尔滨工程大学 | It is pressurized No leakage electromagnetic control type fuel gas ejecting device |
| CN107165745A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of through type mixed admission |
| CN107165745B (en) * | 2017-06-28 | 2023-05-30 | 哈尔滨工程大学 | Piezoelectric internal guide gas injection valve for straight-through mixed air intake |
| CN109555620A (en) * | 2018-10-22 | 2019-04-02 | 中船动力研究院有限公司 | Fuel gas injection valve and its working method with automatic safety device |
| CN109555620B (en) * | 2018-10-22 | 2023-09-22 | 中船动力研究院有限公司 | Gas injection valve with automatic protection device and working method thereof |
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