CN209293928U - A kind of novel pressure regulating system - Google Patents
A kind of novel pressure regulating system Download PDFInfo
- Publication number
- CN209293928U CN209293928U CN201822092810.0U CN201822092810U CN209293928U CN 209293928 U CN209293928 U CN 209293928U CN 201822092810 U CN201822092810 U CN 201822092810U CN 209293928 U CN209293928 U CN 209293928U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- valve body
- gas
- air flue
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Valve Device For Special Equipments (AREA)
- Safety Valves (AREA)
Abstract
The utility model belongs to diesel oil and natural gas double-fuel spraying system technical field, and in particular to a kind of novel pressure regulating system.The novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and dual fuel injector, the compressed natural gas by relief valve and switch valve respectively on regulation valve body the first air flue and air inlet be connected to, first air flue is connected to third air flue, fuel feed hole on the gas outlet and valve union on regulation valve body passes through gas rail respectively and diesel common rail system is connected to dual fuel injector, gas outlet is connected to by filter with gas rail, the second air flue and third air flue on the regulation valve body are connected to pressure sensor and natural gas collecting tank respectively.The beneficial effect is that: the pressure that can be effectively prevented in system is excessive, and can prevent the reflux of natural gas；It realizes decompression protection when gas pressure is excessive to system, is double design protections, securely and reliably.
Description
Technical field
The utility model belongs to diesel oil and natural gas double-fuel spraying system technical field, and in particular to a kind of novel pressure
Regulating system.
Background technique
Currently marketed medium-weight vehicle mainly uses diesel oil as fuel, this kind of burning efficiency of internal combustion engine is substantially low
High pressure direct injection natural gas in cylinder technology (i.e. high-pressure common rail in 39%, with the publication of six discharge standard of state, using diesel oil as single-fuel
System) matching cost and technical difficulty gradually increase, while also bringing the growth in cost.
With the adjustment of national energy structure, and the promotion to emission request, traditional with gasoline and diesel oil is burning
The internal combustion engine of medium will gradually decrease.Natural gas is abundant in china natural resources, gradually starts to be applied to as the alternative fuel of diesel oil
Automobile market.But current natural gas internal combustion engine is gas-duct jetting, is lighted by spark plug, efficiency of combustion is lower than
39%, and discharge and be difficult to meet the emission request gradually promoted.
A kind of in-cylinder direct-jet technology of achievable dual fuel injection can effectively improve burning by the way of compression ignition
Efficiency.The double fuel direct injection technology first sprays a small amount of diesel oil in the combustion chamber, after compression ignition, is promoted in combustion in IC engine room
Temperature, ignite the natural gas then sprayed, then carries out work by combustion, the technology, can by efficiency of combustion promoted to 42% and
PM value and the discharge of NOx can be reduced, more to clean, more economical fuel injection system for IC engine.
In above-mentioned double fuel in-cylinder direct-jet system, there is the pressure regulating system for controlling gas pressure, but press
Draught control system is more demanding to pressure controling precision, and there are no the products of mature pressure regulating system currently on the market, greatly
Portioned product is still in sample stage, and its structure is complicated, processing difficulties, gas pressure to the followability of diesel pressure compared with
Difference, pressure difference is unstable, easy to wear, and existing product performance and reliability can not meet the requirement of dual fuel injection system.
Utility model content
In order to make up for the defects of the prior art, the utility model provides a kind of to overcome defect of the existing technology
Novel pressure regulating system.
The utility model is achieved by the following technical solution:
A kind of novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and double
Fuel injector, the compressed natural gas by relief valve and switch valve respectively with the first air flue and air inlet on regulation valve body
Connection, the first air flue are connected to third air flue, and the fuel feed hole on the gas outlet and valve union on regulation valve body passes through respectively
Gas rail and diesel common rail system are connected to dual fuel injector, and gas outlet is connected to by filter with gas rail, the regulation valve body
On the second air flue and third air flue be connected to respectively with pressure sensor and natural gas collecting tank.
Further, piston is equipped in the regulation valve body, piston and regulation valve body form piston air cavity, regulation valve body bottom
Equipped with the second air flue and third air flue, piston air cavity is connected to the second air flue, and third air flue is corresponded in regulation valve body equipped with valve seat
Component, the piston is interior to be equipped with valve rod, and valve rod one end is located in valve base part, and other end of top surface is by passing through piston spring
Spring force, be pressed on piston inner face；Valve base part passes through the spring force of valve rod spring, and steel ball is pressed on regulation valve body
On regulation valve body sealing cone, oil pocket is formed between the valve union and piston, respectively corresponded on regulation valve body oil pocket, piston into
Port and piston gap are equipped with oil outlet, air inlet and air outlet.
Further, the regulation valve body inner wall corresponds to air inlet and air outlet and is respectively equipped with air inlet annular groove and out compression,
Air inlet is connected to air inlet annular groove, and gas outlet is connected to compression out.
Further, the piston is located at oil pocket one end and is cased with support ring and sealing ring.
Further, end-face seal ring is equipped between the valve union and regulation valve body.
Further, the piston intake mouth and piston gap are located on piston, piston intake mouth and piston gap point
It is not connected to piston air cavity.
Further, third air flue is corresponded on the valve base part equipped with steel ball, valve base part and steel ball are interference fit.
Further, the compressed natural gas is connected to by check valve with relief valve and switch valve.
The beneficial effects of the utility model are:
(1) pressure regulating system of the utility model is equipped with check valve, switch valve, relief valve, pressure-regulating valve, Ke Yiyou
The pressure imitated in anti-locking system is excessive, and can prevent the reflux of natural gas；
(2) relief valve of the utility model and pressure-regulating valve can be achieved gas pressure it is excessive when pressure release to system
Protection is double design protections, securely and reliably.
Detailed description of the invention
The utility model will be further described below with reference to the accompanying drawings.
Pressure regulating system schematic diagram when attached drawing 1 is the utility model internal combustion engine；
Pressure regulating system schematic diagram when attached drawing 2 is the utility model engine shutdown.
In figure, 1 compressed natural gas, 2 check valves, 3 relief valves, 4 switch valves, 5 natural gas collecting tanks, 6 pressure sensors, 7
Filter, 8 gas rails, 9 dual fuel injectors, 10 diesel common rail systems, 11 regulation valve bodies, 12 pistons, 13 valve rods, 14 seat portions
Part, 15 piston springs, 16 valve rod springs, 17 sealing rings, 18 support rings, 19 valve unions, 20 end-face seal rings, 21 air inlets, 22
Air inlet annular groove, 23 piston intake mouths, 24 piston air cavitys, 25 gas outlets, 26 oil pockets, 27 fuel feed holes, 28 oil outlets, 29 first gas
Road, 30 regulation valve body sealing cones, 31 second air flues, 32 third air flues, 33 valve stem spacing planes.
Specific embodiment
Attached drawing 1-2 is a kind of specific embodiment of the utility model.A kind of novel pressure regulating system of the utility model, packet
Compressed natural gas 1, relief valve 3, switch valve 4, regulation valve body 11 and dual fuel injector 9 are included, the compressed natural gas 1 is by letting out
Pressure valve 3 and switch valve 4 respectively on regulation valve body 11 the first air flue 29 and air inlet 21 be connected to, the first air flue 29 and third gas
Road 32 is connected to, and the fuel feed hole 27 on the gas outlet 25 and valve union 19 on regulation valve body 11 passes through gas rail 8 and diesel oil respectively
Common rail system 10 is connected to dual fuel injector 9, and gas outlet 25 is connected to by filter 7 with gas rail 8, on the regulation valve body 11
The second air flue 31 and third air flue 32 be connected to respectively with pressure sensor 6 and natural gas collecting tank 5.
Further, piston 12 is equipped in the regulation valve body 11, piston 12 and regulation valve body 11 form piston air cavity 24, adjust
It saves 11 bottom of valve body and is equipped with the second air flue 31 and third air flue 32, piston air cavity 24 is connected to the second air flue 31, regulation valve body 11
Interior corresponding third air flue 32 is equipped with valve base part 14, is equipped with valve rod 13 in the piston 12,13 one end of valve rod is located at valve base part
In 14, other end of top surface is pressed on 12 inner face of piston by the spring force by piston spring 15；Valve base part 14 is logical
Steel ball is pressed on the regulation valve body sealing cone 30 of regulation valve body 11 by the spring force for crossing valve rod spring 16, the valve union
Oil pocket 26 is formed between 19 and piston 12, and oil pocket 26, piston intake mouth 23 and piston 12 are respectively corresponded on regulation valve body 11 and is open
Equipped with oil outlet 28, air inlet 21 and gas outlet 25.
Further, 11 inner wall of regulation valve body corresponds to air inlet 21 and gas outlet 25 is respectively equipped with air inlet annular groove 22 and goes out
Compression, air inlet 21 are connected to air inlet annular groove 22, and gas outlet 25 is connected to compression out.
Further, the piston 12 is located at 26 one end of oil pocket and is cased with support ring 18 and sealing ring 17.
Further, end-face seal ring 20 is equipped between the valve union 19 and regulation valve body 11.
Further, the piston intake mouth 23 and the opening of piston 12 are located on piston 12, piston intake mouth 23 and work
12 opening of plug is connected to piston air cavity 24 respectively.
Further, third air flue 32 is corresponded on the valve base part 14 equipped with steel ball, valve base part 14 and steel ball are interference
Cooperation.
Further, the compressed natural gas 1 is connected to by check valve 2 with relief valve 3 and switch valve 4.
A kind of novel pressure regulating system of the utility model is equipped with check valve 2, compressed natural gas in pressure regulating system
1 gas pressure, greater than the resultant force of 2 spring force of check valve and the gas pressure of 4 side of switch valve, ball valve is opened, and natural gas passes through
Check valve 2 flows to 4 direction of switch valve；The gas pressure of compressed natural gas 1, less than the gas of 2 spring force of check valve and 4 side of switch valve
The resultant force of body pressure, ball valve are closed, and check valve 2 prevents the natural gas in 4 direction of switch valve, are flowed back to compressed natural gas 1, and pressing
Relief valve 3 is equipped in draught control system, the gas pressure of 2 side of check valve is less than 29 side of 3 spring force of relief valve and the first air flue
Gas pressure resultant force, ball valve is closed, so that natural gas flow is to 4 direction of switch valve；The gas pressure mistake of 2 side of check valve
Greatly, greater than 3 the first air flue of spring force of relief valve, 29 side gas pressure resultant force, ball valve opens, and natural gas flow is to the first air flue
29, it by third air flue 32, flows in natural gas collecting tank 5, so that gas pressure is excessive in anti-locking system, just to system
Often work damages.
Switch valve 4 is equipped in pressure regulating system, when working normally internal combustion engine, switch valve 4 is opened, and natural gas flow is to tune
Valve body 11, filter 7, gas rail 8 are saved, to provide stable compressed natural gas for dual fuel injector 9；When engine shutdown,
Switch valve 4 is closed, and the channel between compressed natural gas 1 and regulation valve body 11 is cut off, and switch valve 4 is acted on by internal structure, can
Flowed back when preventing that pressure is excessive in piston air cavity 24 to 4 front passage of switch valve.
Natural gas collecting tank 5 is equipped in pressure regulating system, the pressure release gas in third air flue 32 is by natural gas collecting tank 5
It collects to do him and use, and a large amount of natural gas straights can be effectively prevented to run in and cause damages into air.
Pressure sensor 6 is equipped in pressure regulating system, the gas pressure in piston air cavity 24 passes through the second air flue 31
It is perceived by pressure sensor 6, so that the pressure change signal in piston air cavity 24 is passed to system ECU, is monitoring pressure
When abnormal, ECU can send a signal to switch valve 4, cut off the access of natural gas, carry out stoppage protection.
Filter 7 is equipped in pressure regulating system, to filter the impurity such as the moisture in natural gas, filtered natural gas is logical
Into gas rail 8.
In pressure regulating system, it is equipped with pressure-regulating valve component, by regulation valve body 11, piston 12, valve rod 13, seat portion
Part 14, piston spring 15, valve rod spring 16, valve union 19 form, and are stablized with adjusting gas pressure in certain pressure differential range
Interior, piston 12 is matched with regulation valve body 11, and sealing ring 17 and support ring 18 are equipped on piston 12, is realized to diesel oil and day
Sealing between right gas, to avoid the mutual pollution of bavin oil and gas two media.In regulation valve body 11 and valve union 19
Between be equipped with sealing ring 20, to prevent the leakage of diesel oil, meanwhile, steel ball and valve base part are fitted in one by interference fit
It rises, forms valve base part 14；Valve rod 13 is assemblied in valve base part 14 by the opening of valve base part 14；The upper top of valve rod 13
Face is pressed on 12 inner face of piston by the spring force of piston spring 15；Valve base part 14 passes through the spring of valve rod spring 16
Steel ball is pressed on regulation valve body sealing cone 30 by power；Piston 12 is matched with regulation valve body 11, and valve rod is equipped in piston 12
13, valve base part 14, piston spring 15, valve rod spring 16, piston 12 and regulation valve body 11 form piston air cavity 24, valve union
19, the upper top surface of regulation valve body 11 and piston 12 forms oil pocket 26, and piston 12 can be transported up and down under the action of piston spring 15
Dynamic, with the up and down motion of piston 12, the circulation area between piston intake mouth 23 and air inlet annular groove 22 can be accordingly increased
Or reduce, to adjust the air inflow of natural gas.
After high-pressure diesel enters oil pocket 26 from the fuel feed hole 27 of valve union 19, diesel pressure rises in oil pocket 26, thus
Piston 12 is pushed to move downward, piston 12 pushes valve rod 13 to move downward by the contact of top surface on valve rod 13, lives at this time
It fills in port 23 and relative motion occurs for air inlet annular groove 22, with moving downward for piston 12, piston intake mouth 23 and air inlet ring
Slot 22 gradually communicates, and circulation area gradually increases, and high-pressure natural gas passes through air inlet 21, air inlet annular groove 22 and piston intake
Mouth 23 flows into piston air cavity 24, reversed axial force is generated to piston 12, finally, the gas pressure in piston air cavity 24, oil
Diesel pressure and spring force in chamber 26, three power generate balance, so that gas pressure is stable and is limited in a certain range
Interior, the gas of the steady pressure enters the gentle rail 8 of filter 7 by gas outlet 25, to realize the natural pressure in gas rail 8
Power variation synchronous with the diesel pressure in diesel common rail system 10, when diesel pressure is excessive, piston 12 continues to move downward, pole
Under limit state, the limit face contact of piston bottom surface and regulation valve body 11,12 stop motion of piston.
Conversely, the diesel pressure in oil pocket 26 declines, and piston 12 is transported upwards when the diesel pressure decline in fuel feed hole 27
Dynamic, piston intake mouth 23 and the circulation area of air inlet annular groove 22 gradually decrease, thus diesel pressure, gas pressure and spring force
Reach new balance, the final gas pressure realized in gas rail 8 also corresponding change.
When the natural pressure fluctuation in piston air cavity 24 is excessive, it is excessive to will cause about 12 pressure difference of piston, piston 12
Continue upward movement, piston intake mouth 23 and the circulation area of air inlet annular groove 22 gradually decrease, until piston intake mouth 23 with into
Compression 22 is detached from, the cutting of natural gas inlet channel.If piston 12 continues up, valve stem spacing plane 33 and valve base part
14 contacts, when continuing up, valve rod 13 drives valve base part 14 to move upwards, and steel ball and regulation valve body sealing cone 30 are de-
From piston air cavity 24 is communicated with third air flue 32, and natural gas flow is to natural gas collecting tank 5, to make the day in piston air cavity 24
Right atmospheric pressure reduces.After the 24 part pressure release of piston air cavity, gas cavity pressure is reduced, and piston 12 moves downward, valve base part 14
Steel ball is contacted with regulation valve body sealing cone 30, and piston air cavity 24 recloses, thus gas pressure, diesel pressure and spring
Power reaches new balance.
In engine shutdown, switch valve 4 is closed, and cuts off the channel between compressed natural gas 1 and regulation valve body 11, together
When, diesel pressure drastically reduces in diesel common rail system 10, and the diesel pressure in diesel oil feeding hole 27 drastically reduces, and piston 12 is held
Continuous to move upwards, piston 12 and valve rod 13 are moved upwards by the spring-force driven dual of piston spring 15, piston intake mouth 23 and air inlet
The circulation area of annular groove 22 gradually decreases, until piston intake mouth 23 and air inlet annular groove 22 are detached from, the cutting of natural gas inlet channel.
If piston 12 continues up, valve stem spacing plane 33 is contacted with valve base part 14.When continuing up, valve rod 13 is driven
Valve base part 14 moves upwards, and steel ball and regulation valve body sealing cone 30 are detached from, and piston air cavity 24 is communicated with third air flue 32, day
Right air-flow is to natural gas collecting tank 5, to realize the pressure release of natural gas in piston air cavity 24, communicated with piston air cavity 24 into
Port 21, gas outlet 25, filter 7, the gas in gas rail 8 can carry out pressure release together.When continuing up, piston intake mouth
23 are detached from air inlet annular groove 22, close natural gas inlet channel.Finally, top surface connects with 19 lower end surface of valve union on piston 12
Touching, 12 stop motion of piston.
The utility model is not limited to above embodiment, anyone, which should learn, makes under the enlightenment of the utility model
There is same or similar technical solution with the utility model, each fall within the protection scope of the utility model.
Technology that the utility model is not described in detail, shape, construction portion are well-known technique.
Claims (8)
1. a kind of novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and double combustions
Material ejector, characterized in that the compressed natural gas by relief valve and switch valve respectively with the first air flue on regulation valve body
It is connected to air inlet, the first air flue is connected to third air flue, the fuel feed hole on the gas outlet and valve union on regulation valve body
It is connected to respectively by gas rail and diesel common rail system with dual fuel injector, gas outlet is connected to by filter with gas rail, described
The second air flue and third air flue on regulation valve body are connected to pressure sensor and natural gas collecting tank respectively.
2. a kind of novel pressure regulating system according to claim 1 is lived it is characterized in that: being equipped in the regulation valve body
Plug, piston and regulation valve body form piston air cavity, and regulation valve body bottom is equipped with the second air flue and third air flue, piston air cavity and the
Two air flues are connected to, and third air flue are corresponded in regulation valve body equipped with valve base part, the piston is interior to be equipped with valve rod, and valve rod one end is located at
In valve base part, other end of top surface is pressed on piston inner face by the spring force by piston spring；Valve base part is logical
Steel ball is pressed on the regulation valve body sealing cone of regulation valve body by the spring force for crossing valve rod spring, the valve union and piston
Between form oil pocket, respectively corresponded on regulation valve body oil pocket, piston intake mouth and piston gap equipped with oil outlet, air inlet and go out
Port.
3. a kind of novel pressure regulating system according to claim 1 or 2, it is characterized in that: the regulation valve body inner wall pair
It answers air inlet and air outlet to be respectively equipped with air inlet annular groove and compression, air inlet is connected to air inlet annular groove out, gas outlet and outlet
Annular groove connection.
4. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the piston is located at one end cap of oil pocket
There are support ring and sealing ring.
5. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the valve union and regulation valve body it
Between be equipped with end-face seal ring.
6. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the piston intake mouth and piston are opened
Mouth is located on piston, and piston intake mouth and piston gap are connected to piston air cavity respectively.
7. a kind of novel pressure regulating system according to claim 2, it is characterized in that: corresponding to third on the valve base part
Air flue is equipped with steel ball, and valve base part and steel ball are interference fit.
8. a kind of novel pressure regulating system according to claim 1, it is characterized in that: the compressed natural gas passes through unidirectionally
Valve is connected to relief valve and switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092810.0U CN209293928U (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092810.0U CN209293928U (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209293928U true CN209293928U (en) | 2019-08-23 |
Family
ID=67654569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822092810.0U Active CN209293928U (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209293928U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505713A (en) * | 2018-12-13 | 2019-03-22 | 英嘉动力科技无锡有限公司 | A kind of novel pressure regulating system |
| WO2021218712A1 (en) * | 2020-04-28 | 2021-11-04 | 未势能源科技有限公司 | Fuel processing unit and fuel storage and supply system having same |
-
2018
- 2018-12-13 CN CN201822092810.0U patent/CN209293928U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505713A (en) * | 2018-12-13 | 2019-03-22 | 英嘉动力科技无锡有限公司 | A kind of novel pressure regulating system |
| WO2021218712A1 (en) * | 2020-04-28 | 2021-11-04 | 未势能源科技有限公司 | Fuel processing unit and fuel storage and supply system having same |
| EP4144981A4 (en) * | 2020-04-28 | 2023-11-15 | FTXT Energy Technology Co., Ltd. | Fuel processing unit and fuel storage and supply system having same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109505713A (en) | A kind of novel pressure regulating system | |
| CN109404188B (en) | Injector for realizing dual fuel injection | |
| CN209293928U (en) | A kind of novel pressure regulating system | |
| JP4698471B2 (en) | engine | |
| CN109519589A (en) | A kind of novel pressure regulating valve structure | |
| CN104675592A (en) | Natural gas/diesel dual-fuel ejector with self-lubricating function | |
| CN209385744U (en) | A kind of novel pressure adjusting valve system | |
| CN205243655U (en) | Dimethyl ether co -combustion system in advance preblends valve controlling means | |
| CN110118138A (en) | A kind of gaseous-fuel injector | |
| CN104595530B (en) | Pressure-regulating device for dual-fuel engine | |
| CN209705387U (en) | A kind of novel pressure regulating valve structure | |
| CN101709665A (en) | Interface compression engine | |
| CN209925136U (en) | Novel direct injection injector in dual-fuel cylinder | |
| CN210068341U (en) | Gas fuel injector | |
| CN209671120U (en) | The composite injection system of engine | |
| CN104061058A (en) | Premixing compression internal-combustion engine and operation method thereof | |
| CN109026474A (en) | A kind of novel double fuel in-cylinder direct-jet injector | |
| CN205744035U (en) | Electromagnetic hydraulic pressure drive-type air distribution system | |
| CN205714518U (en) | The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type | |
| CN104879258A (en) | Hydraulic amplifying type ultrahigh-pressure fuel supply device | |
| CN205744036U (en) | Piezoelectricity controls air distribution system | |
| CN105756829A (en) | Combined mechanical fuel oil injection and pressurizing piezoelectric fuel gas injection mixed fuel injection device | |
| CN205714521U (en) | Combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device | |
| CN102162424A (en) | Piston intake hydraulic free piston engine | |
| CN205714326U (en) | Double electromagnetic hydraulic pressures drive booster-type air distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |