CN105604741B - Dimethyl ether engine Premixed combustion combustion system valve opening control device - Google Patents
Dimethyl ether engine Premixed combustion combustion system valve opening control device Download PDFInfo
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- CN105604741B CN105604741B CN201610145055.0A CN201610145055A CN105604741B CN 105604741 B CN105604741 B CN 105604741B CN 201610145055 A CN201610145055 A CN 201610145055A CN 105604741 B CN105604741 B CN 105604741B
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- valve
- way magnetic
- piston cylinder
- check valve
- magnetic valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
-
- 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
Abstract
The present invention relates to a kind of dimethyl ether engine Premixed combustion combustion system valve opening control device.Its technical scheme is：The one end for the cam follower (3) being in contact with cam (4) is fixedly connected with the piston rod end of first piston cylinder (1), the rodless cavity of first piston cylinder (1) communicates with the A mouths of the first 2/2-way magnetic valve (22) and the entrance of the first check valve (21), the P mouths of first 2/2-way magnetic valve (22) communicate with the outlet of overflow valve (5) entrance and the second check valve (6), the exit of second check valve (6) is equipped with accumulator (2), and the second check valve (6) entrance communicates with oil pump (8) outlet.The outlet of first check valve (21) communicates respectively with the rodless cavity of second piston cylinder (18) and the A mouths of the second 2/2-way magnetic valve (19), and the P mouths of the second 2/2-way magnetic valve (19) communicate respectively with the A mouths of the 3rd 2/2-way magnetic valve (9).The piston rod of second piston cylinder (18) is in contact with valve (13) afterbody.It is variable and maintain the control of appropriate aperture that the present apparatus realizes valve lift.
Description
Technical field
The invention belongs to dimethyl ether engine Premixed combustion Combustor Technologies field.More particularly to a kind of dimethyl ether engine
Premixed combustion combustion system valve opening control device.
Background technology
With the requirement more and more higher to engine economy, dimethyl ether (DME) is with its excellent fuel physical property and extensively
Source become one of ideal engine replacing fuel at present.Meanwhile homogeneity compression-ignition (HCCI) combustion mode is with it
Energy-conservation, low emission and the highest attention for causing internal combustion engine circle to the characteristics of fuel height compatibility, but HCCI combustion mode
The technology barrier of gaseous mixture preparation and Combustion System be present in popularization and application.In order to solve existing problem, with reference to the low stickiness of dimethyl ether,
High-vapor-pressure physical property and HCCI combustion are theoretical, and researchers propose dimethyl ether engine Premixed combustion (PCCI) burning mould
Formula, and have developed experimental prototype (Jun Song, Zhen Huang, Xinqi Qiao. Performance of a
controllable premixed combustion engine fueled with dimethyl ether. Energy
Conversion and Management. 2004, 45：2223-2232), one is provided to solve the energy and environmental issue
New research direction.
Existing dimethyl ether engine Premixed combustion combustion system is made up of main chamber and subsidiary combustion chamber, and in main burning
Valve is set on room and subsidiary combustion chamber passage, to control the formation of gaseous mixture, catch fire, burn and discharge.The on-off action of valve
By cam mechanism, hydraulic means controlling.The molded line that the drawbacks of existing control device is to depend on cam unduly is with control valve
Door aperture, it can not meet that valve needs in Premixed combustion combustion system keep the requirement of larger opening opening for a long time.
The content of the invention
It is contemplated that overcome existing technological deficiency, it is therefore an objective to provide a kind of dimethyl ether engine Premixed combustion burning system
System valve opening control device, the external solenoid valve control module of the device, high combustion efficiency, engine noise are small, valve uses
Long lifespan and can make for a long time valve keep larger opening opening.
To achieve the above object, the technical solution adopted by the present invention is：Described device is by cam and hydraulic drive mechanism, combustion
Burn room passage switching device executing agency, oil supply loop and draining buffer loop composition.Concrete structure is：
Cam and hydraulic drive mechanism are made up of cam, cam follower and first piston cylinder.It is convex that cam is arranged on air inlet
On wheel shaft or exhaust cam shaft, drive link one end of cam follower is provided with roller, and roller is in contact with cam；Drive link
The other end be fixedly connected with the piston rod end of first piston cylinder.
Chamber passage opening and closing device executing agency is by second piston cylinder, upper holder for valve spring, valve spring, lower valve bullet
Spring abutment and valve composition.Passage of the valve head between main chamber and subsidiary combustion chamber, valve afterbody are worn from the bottom up successively
Subsidiary combustion chamber, lower valve spring base, valve spring and upper holder for valve spring is crossed with the end of the piston rod of second piston cylinder to connect
Touch.Lower valve spring base is fixed on the top of subsidiary combustion chamber, and upper holder for valve spring is fixed on the end of valve afterbody, valve bullet
Spring is arranged between lower valve spring base and upper holder for valve spring.Lower valve spring base, valve, upper holder for valve spring and second piston
The center line of the piston rod of cylinder is located at same center line.
Oil supply loop is by the first 2/2-way magnetic valve, accumulator, oil pump, motor, overflow valve, the first check valve and second
Check valve forms.The hydraulic fluid port A of first 2/2-way magnetic valve and the entrance of the rodless cavity of first piston cylinder and the first check valve point
Do not communicate, the hydraulic fluid port P of the first 2/2-way magnetic valve is communicated respectively with the outlet of overflow valve inlet and the second check valve, and second is single
Accumulator is housed to the exit of valve.Second one-way valve inlet communicates with fuel pump outlet, and motor and oil pump axis connection, overflow valve go out
Mouth and oil pump inlet communicate with fuel tank.
Draining buffering hydraulic loop is by the second 2/2-way magnetic valve, the 3rd 2/2-way magnetic valve, choke valve and fuel tank
Composition.The hydraulic fluid port A of second 2/2-way magnetic valve is communicated respectively with the rodless cavity of the outlet of the first check valve and second piston cylinder,
The hydraulic fluid port P of second 2/2-way magnetic valve is communicated respectively with the hydraulic fluid port A of the 3rd 2/2-way magnetic valve and the entrance of choke valve, the
The hydraulic fluid port P and throttling valve outlet of three 2/2-way magnetic valves communicate with fuel tank.
The relay of first 2/2-way magnetic valve, the second 2/2-way magnetic valve and the 3rd 2/2-way magnetic valve is external
Solenoid valve control module.
The accumulator is one kind in weighted accumulator, spring accumul ator, inflatable accumulator；The accumulator
Maximum working pressure be more than or equal to the overflow valve oil pressure relief.
First check valve is that spherical valve core straight check valve, cylindrical valve spool straight check valve, taper valve core are straight
One kind in formula check valve；First check valve is identical with the second check valve.
The pretightning force of the valve spring acts on pressure caused by the piston face of second piston cylinder more than hydraulic oil.
The course of work of the present invention：
Engine compresses end of travel, external solenoid valve control module send instruction, open the first 2/2-way electromagnetism
Valve, close the second 2/2-way magnetic valve.Hydraulic oil in fuel tank passes through the first 2/2-way magnetic valve in the presence of oil pump
Into first piston cylinder, while section hydraulic oil enters second piston cylinder by the first check valve.Due to the pretension of valve spring
Power acts on pressure caused by the piston face of second piston cylinder more than hydraulic oil, so valve is still in closed mode.
During oil pump feed, the first 2/2-way solenoid valve control supply time, so as to determine the number of fuel delivery, fuel delivery it is more
The maximum opening of valve is directly affected less.After fuel feeding terminates, the solenoid valve control module sends instruction, closes the first two two
Three-way electromagnetic valve and the second 2/2-way magnetic valve.Now, cam terminates nearly stand-down, into the rise phase, passes through first piston cylinder
Driving force Open valve is transmitted with the hydraulic oil closed in second piston cylinder, valve spring is further compressed.Cam is from rise
Phase moves to remote stand-down and terminated, and the solenoid valve control module sends instruction, opens the first 2/2-way magnetic valve, closes the
Two 2/2-way magnetic valves.Now first piston cylinder continues fuel feeding by oil supply loop, the hydraulic fluid pressure in second piston cylinder
Much larger than hydraulic fluid pressure in first piston cylinder, the first check valve is still in closed mode, and valve is kept it turned on.High temperature
Pressure-air enters subsidiary combustion chamber, and is caught fire in subsidiary combustion chamber, and combustion gas and unburned mixture pour main chamber, in main burning
Indoor Combustion.The opening of valve remains to suction stroke end.
In suction stroke end, the solenoid valve control module sends instruction, opens the second 2/2-way magnetic valve and the
Three 2/2-way magnetic valves, the restoring force of valve spring act on by upper holder for valve spring, the afterbody of valve and piston rod
The piston of two piston cylinders, hydraulic oil is set to flow back to fuel tank by the second 2/2-way magnetic valve and the 3rd 2/2-way magnetic valve.Valve
For door close to taking a seat the moment, the solenoid valve control module sends instruction, closes the 3rd 2/2-way magnetic valve.Now second piston
Hydraulic oil in cylinder flows back to fuel tank by the second 2/2-way magnetic valve and choke valve.Because the hydraulic fluid port diameter of choke valve is much smaller than
The caliber of oil circuit oil pipe, so the back-flow velocity of hydraulic oil slows down, finally realizes that valve is put down where 3rd 2/2-way magnetic valve
It is slow to take a seat.After valve is closed, fuel injector sprays into dimethyl ether and uniform premixed gas is formed in the subsidiary combustion chamber of closing, next
Individual compression travel end, valve are opened again, complete working cycles.
The present invention compared with prior art, has following good effect：
The present apparatus can be moved under the effect of external solenoid valve control module according to opening and closing of the actual condition of engine to valve
Make accurate control, in view of in dimethyl ether Premixed combustion combustion process, what a work period inner valve was kept it turned on continues
Time is relatively long, and the present invention makes valve opening by the first check valve and closed independently of each other, is effectively guaranteed valve
Opening time.According to the fuel delivery of the Operating condition adjustment first piston cylinder of engine, fuel delivery determines the maximum opening of valve.Valve
Door remains the maximum opening to match with engine operating condition and opening time, improves mixed gas quality, and then effectively carry
The efficiency of combustion of high engine.Valve is taken a seat constantly by hydraulic brake circuit, is slowed down the impact between valve and valve seat, is subtracted
Small noise and the service life for extending valve.
It is therefore, of the invention on the premise of Valve controlling function in meeting dimethyl ether engine Premixed combustion combustion system,
With high combustion efficiency, engine noise is small, valve service life is long and valve can be made to keep larger opening to open for a long time
The characteristics of state.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Embodiment
With reference to embodiment and accompanying drawing, the invention will be further described, not to the limit of its protection domain
System.
Embodiment 1
A kind of dimethyl ether engine Premixed combustion combustion system valve opening control device.As shown in figure 1, described device by
Cam and hydraulic drive mechanism, chamber passage opening and closing device executing agency, oil supply loop and draining buffer loop composition.Specifically
Structure is：
Cam and hydraulic drive mechanism are made up of cam 4, cam follower 3 and first piston cylinder 1.Cam 4 be arranged on into
On gas camshaft or exhaust cam shaft, drive link one end of cam follower 3 is provided with roller, and roller is in contact with cam 4；
The other end of drive link is fixedly connected with the piston rod end of first piston cylinder 1.
Chamber passage opening and closing device executing agency by second piston cylinder 18, upper holder for valve spring 17, valve spring 16, under
Holder for valve spring 15 and valve 13 form.Passage of the head of valve 13 between main chamber 12 and subsidiary combustion chamber 14, valve 13
Afterbody is successively from the bottom up through subsidiary combustion chamber 14, lower valve spring base 15, valve spring 16 and upper holder for valve spring 17 and the
The end of the piston rod of two piston cylinders 18 is in contact.Lower valve spring base 15 is fixed on the top of subsidiary combustion chamber 14, upper valve bullet
Spring abutment 17 is fixed on the end of the afterbody of valve 13, and valve spring 16 is arranged on lower valve spring base 15 and upper holder for valve spring 17
Between.Lower valve spring base 15, valve 13, upper holder for valve spring 17 and second piston cylinder 18 piston rod center line positioned at same
Center line.
Oil supply loop is by the first 2/2-way magnetic valve 22, accumulator 2, oil pump 8, motor 7, overflow valve 5, the first check valve
21 and second check valve 6 form.The hydraulic fluid port A of first 2/2-way magnetic valve 22 and the rodless cavity of first piston cylinder 1 and first are single
Communicated respectively to the entrance of valve 21, the hydraulic fluid port P of the first 2/2-way magnetic valve 22 and the entrance of overflow valve 5 and the second check valve 6
Outlet communicates respectively, and the exit of the second check valve 6 is equipped with accumulator 2.The entrance of second check valve 6 communicates with the outlet of oil pump 8, electricity
Machine 7 and the axis connection of oil pump 8, the outlet of overflow valve 5 and the entrance of oil pump 8 communicate with fuel tank 11.
Draining buffering hydraulic loop is by the second 2/2-way magnetic valve 19, the 3rd 2/2-way magnetic valve 9, the and of choke valve 10
Fuel tank 11 forms.The outlet of the hydraulic fluid port A of second 2/2-way magnetic valve 19 and the first check valve 21 and the nothing of second piston cylinder 18
Rod cavity communicates respectively, the hydraulic fluid port P of the second 2/2-way magnetic valve 19 and the hydraulic fluid port A and choke valve of the 3rd 2/2-way magnetic valve 9
10 entrance is communicated respectively, and the hydraulic fluid port P and choke valve 10 of the 3rd 2/2-way magnetic valve 9 are exported to be communicated with fuel tank 11.
The relay of first 2/2-way magnetic valve 22, the second 2/2-way magnetic valve 19 and the 3rd 2/2-way magnetic valve 9
The external solenoid valve control module 20 of device.
The accumulator 2 is weighted accumulator；The maximum working pressure of the accumulator 2 is more than or equal to the overflow
The oil pressure relief of valve 5.
First check valve 21 is spherical valve core straight check valve；First check valve 21 is identical with the second check valve 6.
The pretightning force of the valve spring 16 is acted on caused by the piston face of second piston cylinder 18 more than hydraulic oil
Pressure.
Embodiment 2
A kind of dimethyl ether engine Premixed combustion combustion system valve opening control device.Except accumulator 2 and first is unidirectional
Outside valve 21, remaining is the same as embodiment 1.
The accumulator 2 is spring accumul ator.
First check valve 21 is cylindrical valve spool straight check valve.
Embodiment 3
A kind of dimethyl ether engine Premixed combustion combustion system valve opening control device.Except accumulator 2 and first is unidirectional
Outside valve 21, remaining is the same as embodiment 1.
The accumulator 2 is inflatable accumulator.
First check valve 21 is taper valve core straight check valve.
The course of work of present embodiment：
Engine compresses end of travel, external solenoid valve control module 20 send instruction, open the first 2/2-way electricity
Magnet valve 22, close the second 2/2-way magnetic valve 19.Hydraulic oil in fuel tank 11 is in the presence of oil pump 8 by the first two two
Three-way electromagnetic valve 22 enters first piston cylinder 1, while section hydraulic oil enters second piston cylinder 18 by the first check valve 21.Due to
The pretightning force of valve spring 16 acts on pressure caused by the piston face of second piston cylinder 18 more than hydraulic oil, so valve
13 are still in closed mode.During the fuel feeding of oil pump 8, the first 2/2-way magnetic valve 22 control supply time, so as to determine
The number of fuel delivery, the number of fuel delivery directly affect the maximum opening of valve 13.After fuel feeding terminates, the solenoid valve control mould
Block 20 sends instruction, closes the first 2/2-way magnetic valve 22 and the second 2/2-way magnetic valve 19.Now, cam 4 terminates closely
Stand-down, into the rise phase, driving force opening valve is transmitted by the hydraulic oil closed in first piston cylinder 1 and second piston cylinder 18
Door 13, valve spring 16 is further compressed.Cam 4 moves to remote stand-down from the rise phase to be terminated, the solenoid valve control mould
Block 20 sends instruction, opens the first 2/2-way magnetic valve 22, closes the second 2/2-way magnetic valve 19.Now first piston cylinder
1 continues fuel feeding by oil supply loop, and the hydraulic fluid pressure in second piston cylinder 18 is much larger than hydraulic oil pressure in first piston cylinder 1
Power, the first check valve 21 are still in closed mode, and valve 13 is kept it turned on.HTHP air enters subsidiary combustion chamber
14, and caught fire in subsidiary combustion chamber 14, combustion gas and unburned mixture pour main chamber 12, are burnt in main chamber 12.Valve
The opening of door 13 remains to suction stroke end.
In suction stroke end, the solenoid valve control module 20 sends instruction, opens the second 2/2-way magnetic valve 19
With the 3rd 2/2-way magnetic valve 9, the restoring force of valve spring 16 passes through upper holder for valve spring 17, the afterbody and piston of valve 13
Bar acts on the piston of second piston cylinder 18, hydraulic oil is passed through the second 2/2-way magnetic valve 19 and the 3rd 2/2-way electromagnetism
Valve 9 flows back to fuel tank.For valve 13 close to taking a seat the moment, the solenoid valve control module 20 sends instruction, closes the 3rd 2/2-way
Magnetic valve 9.Now the hydraulic oil in second piston cylinder 18 flows back to fuel tank by the second 2/2-way magnetic valve 19 and choke valve 10
11.Because the hydraulic fluid port diameter of choke valve 10 is much smaller than the caliber of the place oil circuit oil pipe of the 3rd 2/2-way magnetic valve 9, so hydraulic pressure
The back-flow velocity of oil slows down, and finally realizes that valve 13 is gently taken a seat.After valve 13 is closed, fuel injector sprays into dimethyl ether in closing
Uniform premixed gas is formed in subsidiary combustion chamber 14, in next compression travel end, valve 13 is opened again, completes work
Circulation.
Present embodiment compared with prior art, has following good effect：
The present apparatus, can be according to actual condition the opening to valve 13 of engine under the effect of external solenoid valve control module 20
The accurate control of action is closed, in view of in dimethyl ether Premixed combustion combustion process, a work period inner valve 13 is kept it turned on
Duration it is relatively long, the embodiment makes valve 13 open and close independently of each other by the first check valve 21,
It is effectively guaranteed the opening time of valve 13.According to the fuel delivery of the Operating condition adjustment first piston cylinder 1 of engine, fuel delivery is determined
The maximum opening of valve 13 is determined.Valve 13 remains the maximum opening to match with engine operating condition and opening time, changes
It has been apt to mixed gas quality, and then has effectively improved the efficiency of combustion of engine.Valve 13 is taken a seat constantly by hydraulic brake circuit, is subtracted
Slow impact between valve 13 and valve seat, reduce noise and extend the service life of valve 13.
Therefore, present embodiment Valve controlling function in dimethyl ether engine Premixed combustion combustion system is met
Under the premise of, have high combustion efficiency, engine noise are small, valve service life is long and valve can be made to keep larger for a long time to open
The characteristics of spending opening.
Claims (4)
1. a kind of dimethyl ether engine Premixed combustion combustion system valve opening control device, it is characterised in that described device is by convex
Wheel and hydraulic drive mechanism, chamber passage opening and closing device executing agency, oil supply loop and draining buffer loop composition；
Cam and hydraulic drive mechanism are made up of cam (4), cam follower (3) and first piston cylinder (1)；Cam (4) is installed
On admission cam shaft or exhaust cam shaft, drive link one end of cam follower (3) is provided with roller, roller and cam
(4) it is in contact；The other end of drive link is fixedly connected with the piston rod end of first piston cylinder (1)；
Chamber passage opening and closing device executing agency by second piston cylinder (18), upper holder for valve spring (17), valve spring (16),
Lower valve spring base (15) and valve (13) composition；Valve (13) head is located between main chamber (12) and subsidiary combustion chamber (14)
Passage, valve (13) afterbody successively from the bottom up through subsidiary combustion chamber (14), lower valve spring base (15), valve spring (16) and
Upper holder for valve spring (17) is in contact with the end of the piston rod of second piston cylinder (18), and lower valve spring base (15) is fixed on pair
The top of combustion chamber (14), upper holder for valve spring (17) are fixed on the end of valve (13) afterbody, valve spring (16) installation
Between lower valve spring base (15) and upper holder for valve spring (17)；Lower valve spring base (15), valve (13), upper holder for valve spring
(17) and the center line of the piston rod of second piston cylinder (18) is located at same center line；
Oil supply loop is by the first 2/2-way magnetic valve (22), accumulator (2), oil pump (8), motor (7), overflow valve (5), first
Check valve (21) and the second check valve (6) composition；The hydraulic fluid port A of first 2/2-way magnetic valve (22) and first piston cylinder (1)
The entrance of rodless cavity and the first check valve (21) communicates respectively, hydraulic fluid port P and the overflow valve (5) of the first 2/2-way magnetic valve (22)
The outlet of entrance and the second check valve (6) communicates respectively, and the exit of the second check valve (6) is equipped with accumulator (2)；Second is unidirectional
Valve (6) entrance communicates with oil pump (8) outlet, motor (7) and oil pump (8) axis connection, overflow valve (5) outlet and oil pump (8) entrance
Communicated with fuel tank (11)；
Draining buffering hydraulic loop is by the second 2/2-way magnetic valve (19), the 3rd 2/2-way magnetic valve (9), choke valve (10)
Formed with fuel tank (11)；The hydraulic fluid port A of second 2/2-way magnetic valve (19) and outlet and the second piston of the first check valve (21)
The rodless cavity of cylinder (18) communicates respectively, the hydraulic fluid port P of the second 2/2-way magnetic valve (19) and the 3rd 2/2-way magnetic valve (9)
The entrance of hydraulic fluid port A and choke valve (10) communicates respectively, hydraulic fluid port P and choke valve (10) outlet of the 3rd 2/2-way magnetic valve (9)
Communicated with fuel tank (11)；
First 2/2-way magnetic valve (22), the second 2/2-way magnetic valve (19) and the 3rd 2/2-way magnetic valve (9) after
The external solenoid valve control module of electrical equipment (20).
2. dimethyl ether engine Premixed combustion combustion system valve opening control device according to claim 1, its feature
It is the accumulator (2) for one kind in weighted accumulator, spring accumul ator, inflatable accumulator；The accumulator
(2) maximum working pressure is more than or equal to the oil pressure relief of the overflow valve (5).
3. dimethyl ether engine Premixed combustion combustion system valve opening control device according to claim 1, its feature
It is that first check valve (21) is straight for spherical valve core straight check valve, cylindrical valve spool straight check valve, taper valve core
One kind in formula check valve；First check valve (21) is identical with the second check valve (6).
4. dimethyl ether engine Premixed combustion combustion system valve opening control device according to claim 1, its feature
It is that the pretightning force of the valve spring (16) is acted on caused by the piston face of second piston cylinder (18) more than hydraulic oil
Pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145055.0A CN105604741B (en) | 2016-03-14 | 2016-03-14 | Dimethyl ether engine Premixed combustion combustion system valve opening control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145055.0A CN105604741B (en) | 2016-03-14 | 2016-03-14 | Dimethyl ether engine Premixed combustion combustion system valve opening control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105604741A CN105604741A (en) | 2016-05-25 |
| CN105604741B true CN105604741B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610145055.0A Expired - Fee Related CN105604741B (en) | 2016-03-14 | 2016-03-14 | Dimethyl ether engine Premixed combustion combustion system valve opening control device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107476915B (en) * | 2017-08-22 | 2019-11-01 | 哈尔滨工程大学 | A kind of double-acting type high pressure fuel feedway with buffer unit |
| CN107387185A (en) * | 2017-09-08 | 2017-11-24 | 郭颂怡 | Dimethyl ether premixed combustion system is pre-mixed the opening and closing device of valve |
| CN112832897A (en) * | 2020-12-31 | 2021-05-25 | 武汉科技大学 | Control device for main and auxiliary combustion chamber channel valve of natural gas-dimethyl ether engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6332477B1 (en) * | 1998-06-19 | 2001-12-25 | Hydac Technology Gmbh | Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation |
| CN204299643U (en) * | 2014-12-16 | 2015-04-29 | 武汉科技大学 | For the valve hydraulic pressure opening and closing device of dimethyl ether engine chamber passage |
| CN205383009U (en) * | 2016-03-14 | 2016-07-13 | 武汉科技大学 | Be used for dimethyl ether engine to mix valve electro -hydraulic control device of compression ignite system in advance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173553A (en) * | 1981-04-20 | 1982-10-25 | Nippon Denso Co Ltd | Fuel injection device for internal combustion engine |
-
2016
- 2016-03-14 CN CN201610145055.0A patent/CN105604741B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6332477B1 (en) * | 1998-06-19 | 2001-12-25 | Hydac Technology Gmbh | Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation |
| CN204299643U (en) * | 2014-12-16 | 2015-04-29 | 武汉科技大学 | For the valve hydraulic pressure opening and closing device of dimethyl ether engine chamber passage |
| CN205383009U (en) * | 2016-03-14 | 2016-07-13 | 武汉科技大学 | Be used for dimethyl ether engine to mix valve electro -hydraulic control device of compression ignite system in advance |
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| CN105604741A (en) | 2016-05-25 |
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