CN208024469U - Valve control device for alcohol ether dual fuel engine Premixed combustion system - Google Patents
Valve control device for alcohol ether dual fuel engine Premixed combustion system Download PDFInfo
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- CN208024469U CN208024469U CN201721909221.6U CN201721909221U CN208024469U CN 208024469 U CN208024469 U CN 208024469U CN 201721909221 U CN201721909221 U CN 201721909221U CN 208024469 U CN208024469 U CN 208024469U
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- fuel feeding
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- engine
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Abstract
Include main and auxiliary combustor's passage switching device the utility model discloses one kind, it further include multigroup fuel feeding minor loop for controlling multigroup engine fuel cylinder main and auxiliary combustor passage switching device, fuel feeding minor loop includes for the fuel feeding branch and draining branch for piston oil supply cylinder and draining, and multigroup fuel feeding minor loop is by same fuel feeding major loop fuel feeding；The limiting plate for limiting upper holder for valve spring up and down motion extreme position is provided at the upper holder for valve spring of the present apparatus.Under the premise of meeting the premixing valve control function of dimethyl ether, methanol alcohol ether dual fuel engine compression ignition, have the characteristics that consistent each cylinder output power of engine, high combustion efficiency, engine noise are small, valve service life is long and valve can be made to keep larger opening open state for a long time.
Description
Technical field
The utility model belongs to dual fuel engine Premixed combustion Combustor Technologies field.It being used for alcohol ether more particularly to one kind
The valve control device of dual fuel engine Premixed combustion system.
Background technology
Currently, the energy and environmental protection are the two principal themes of human lives.The fuel availability of internal combustion engine is improved, harmful row is reduced
It puts, develops and use substitute fuel, be to save petroleum resources, alleviate Pressure on Energy, ensure national energy security and environmental protection
Major issue, be Chinese national economy and the great demand of social development.In recent years, substitute fuel gradually starts on vehicle fuel
Show up prominently and gets more and more people's extensive concerning.From single fuel to multi fuel, from traditional ignition way, compression ignition mode to
The transformation of the combustion modes such as HCCI, PCCI and RCCI, many researchers have carried out greatly its combustibility and emission performance etc.
The exploration of amount is made that tremendous contribution for the functionization of substitute fuel.
In substitute fuel, the double fuel that the dimethyl ether of high cetane number and high-octane methanol are combined into is considered as managing
One of substitute fuel thought.Scholars have done many researchs to this double fuel, and wherein Tadashi Murayama et al. are utilized
Dimethyl ether is easy to be extracted from methanol with aluminium oxide catalyst at high temperature, has developed reality of the dimethyl ether as starting mix
Experiment device (T.Murayama, T.Chikahiro, J.Guo, M.Mayano, A Study of a Compression
Ignition Methanol Engine with Converted Dimethyl Ether as an Ignition
Improver, SAE Paper922212), it is made that contribution for the functionization of dimethyl ether, methanol dual fuel engine.Such vapour
Vehicle need to only fill a kind of fuel of methanol, recycle catalyst combination exhaust energy that can generate dimethyl ether, and then realize that alcohol ether is double
The supply of fuel.The burning of dimethyl ether, methanol double fuel using the advantage of the new combustions patterns such as HCCI, PCCI and RCCI to having
It is significant.
In terms of the substitute fuel of single fuel, existing dimethyl ether engine Premixed combustion combustion system valve opening control
Device has some shortcomings.The cam mechanism of its device is simultaneously impracticable, and is unfavorable for integral arrangement and the lightweight of engine.Separately
There is no the multi-cylinders for considering engine for the outer existing device of this aspect so that the practicability of these devices substantially reduces.
Invention content
The utility model provides that a kind of each cylinder output power of engine is consistent, combustion aiming at the deficiencies in the prior art
It burns that efficient, engine noise is small, valve service life is long and valve opening is flexibly controllable is used for alcohol ether dual fuel engine
The valve control device of Premixed combustion system.
To achieve the goals above, designed by the utility model for alcohol ether dual fuel engine Premixed combustion system
Valve control device, including main and auxiliary combustor's passage switching device, main and auxiliary combustor's passage switching device include piston cylinder,
The head of upper holder for valve spring, valve spring, lower valve spring base and valve, the valve is located at main chamber and subsidiary combustion chamber
Between channel, be characterized in that：Further include for controlling multigroup engine fuel cylinder main and auxiliary combustor passage switching device
Multigroup fuel feeding minor loop, fuel feeding minor loop includes for the fuel feeding branch and draining branch for piston oil supply cylinder and draining, institute
It states multigroup fuel feeding minor loop and provides identical oil pressure progress fuel feeding by same fuel feeding major loop；At the upper holder for valve spring of the present apparatus
It is provided with the limiting plate for limiting upper holder for valve spring up and down motion extreme position.
Further, the fuel feeding major loop include the hydraulic oil container for being in turn connected to form circuit, it is oil pump, first unidirectional
Valve, hydraulic oil distribution pipe and pressure limiting valve are provided on the hydraulic oil distribution pipe multigroup for connecting fuel feeding minor loop oil-feed port.
Further, the oil-feed port number of the hydraulic oil distribution pipe is consistent with engine cylinder number.
Further, the fuel feeding branch includes connecting the pipeline of fuel feeding major loop and piston cylinder, by confession on the pipeline
Oily direction is disposed with the first 2/2-way solenoid valve and the second check valve.
Further, the draining branch includes connecting the pipeline of piston cylinder and fuel feeding major loop, is pressed back on the pipeline
Oily direction is disposed with the second 2/2-way solenoid valve and third 2/2-way solenoid valve, the third 2/2-way solenoid valve
On be parallel with throttle valve.
Further, be provided on the fuel feeding minor loop for control the first 2/2-way solenoid valve, the second two two
The solenoid valve control module of three-way electromagnetic valve and third 2/2-way solenoid valve is provided on the main oil supply loop each for controlling
The total control equipment of the solenoid valve control module of fuel feeding minor loop, pressure sensor is provided on main oil supply loop, and the pressure passes
Sensor and motor for control oil pump are connect with total control equipment.
The utility model has the advantage of：
The utility model is meeting the premixing valve control function of dimethyl ether, methanol alcohol ether dual fuel engine compression ignition
Under the premise of, have that each cylinder output power of engine consistent, high combustion efficiency, engine noise be small, valve spy with long service life
Point can make valve keep larger opening open state for a long time.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model.
In figure：First 2/2-way solenoid valve 1, the second check valve 2, solenoid valve control module 3, the second 2/2-way electromagnetism
Valve 4, third 2/2-way solenoid valve 5, throttle valve 6, limiting plate 7, piston cylinder 8, upper holder for valve spring 9, valve spring 10, lower valve
Door spring base 11, electric controlled direct spray fuel injector 12, subsidiary combustion chamber 13, valve 14, main chamber 15, piston 16, total control equipment 17, electricity
Machine 18, oil pump 19, hydraulic oil container 20, the first check valve 21, pressure sensor 22, hydraulic oil distribution pipe 23, pressure limiting valve 24.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments：
A kind of valve control device for alcohol ether dual fuel engine Premixed combustion system, as shown in Figure 1, described device
It is made of fuel feeding major loop, fuel feeding minor loop, main and auxiliary combustor's passage switching device electronic control unit.Concrete structure is：
Fuel feeding major loop is by hydraulic oil container 20, oil pump 19, motor 18, the first check valve 21, the total ECU17 of control valve, pressure
Sensor 22, hydraulic oil distribution pipe 23 and pressure limiting valve 24 form；The entrance of hydraulic oil distribution pipe 23 goes out with the first check valve 21
Mouth communicates, and the outlet of hydraulic oil distribution pipe 23 is communicated with the entrance of pressure limiting valve 24；The entrance of first check valve 21 and oil pump 19
Outlet communicates, motor 18 and 19 axis connection of oil pump, the outlet of the entrance and pressure limiting valve 24 of oil pump 19 respectively with 20 phase of hydraulic oil container
It is logical；
Fuel feeding minor loop is made of fuel feeding branch and draining branch, wherein fuel feeding branch include connection fuel feeding major loop and
The pipeline of piston cylinder is disposed with the first 2/2-way solenoid valve 1 and the second check valve 2 on the pipeline by fuel feeding direction.The
The P mouths of one or two two three-way electromagnetic valve 1 are communicated with by an oil supply cylinder mouth of hydraulic oil distribution pipe 23, the entrance of the second check valve 2 with
The A mouths of first 2/2-way solenoid valve 1 communicate, the outlet of the second check valve 2 and the A mouths of the second 2/2-way solenoid valve 4 and work
The rodless cavity of plug cylinder 8 communicates respectively.
Draining branch includes connecting the pipeline of piston cylinder 8 and fuel feeding major loop, is set gradually by oil return direction on the pipeline
There are the second 2/2-way solenoid valve 4 and third 2/2-way solenoid valve 5, section is parallel on the third 2/2-way solenoid valve 5
Flow valve 6.The A mouths of second 2/2-way solenoid valve 4 communicate respectively with the rodless cavity of the outlet of the second check valve 2 and piston cylinder 8, the
The P mouths of two 2/2-way solenoid valves 4 communicate respectively with the entrance of the A mouths of third 2/2-way solenoid valve 5 and throttle valve 6, third
The outlet of the P mouths and throttle valve 6 of 2/2-way solenoid valve 5 is communicated with hydraulic oil container 20.
Main and auxiliary combustor's passage switching device is by limiting plate 7, piston cylinder 8, upper holder for valve spring 9, valve spring 10, lower valve
Door spring base 11 and valve 14 form；Channel of the head of valve 14 between main chamber 15 and subsidiary combustion chamber 13, valve 14
Tail portion pass through from the bottom up successively subsidiary combustion chamber 13, lower valve spring base 11, valve spring 10, upper holder for valve spring 9 with it is living
The end of the piston rod of plug cylinder 8 is in contact, and lower valve spring base 11 is fixed on the top of subsidiary combustion chamber 13, upper holder for valve spring 9
It is connected through a screw thread with 14 tail portion of valve, valve spring 10 is mounted between lower valve spring base 11 and upper holder for valve spring 9；Valve
Door 14, lower valve spring base 11, upper holder for valve spring 9 and piston cylinder 8 the center line of piston rod should be located at same axis；Upper valve
Door spring base 9 is stuck between the upper bottom crown of limiting plate 7；
Electronic control unit is made of the solenoid valve control module 3 of total control equipment 17 and each cylinder；Electromagnetic Control module 3 is and fuel feeding
On minor loop, for controlling the first 2/2-way solenoid valve 1, the second 2/2-way solenoid valve 4 and third 2/2-way solenoid valve
5, total control equipment is located on fuel feeding major loop, for controlling the Electromagnetic Control module 3 on multigroup fuel feeding minor loop, fuel feeding major loop
On be provided with the pressure sensor 22 being connect with total control equipment 17, total control equipment 17 obtains the signal of pressure sensor 22, control
The motor 18 of solenoid valve control module and control oil pump 19, the signal control that solenoid valve control module is used to receive top control module supply
The opening and closing of solenoid valve in oily minor loop.Solenoid valve control module 3 and the first 2/2-way solenoid valve 1, the second two two
The relay of three-way electromagnetic valve 4 and third 2/2-way solenoid valve 5 difference is external.
The oil-feed port number of the hydraulic oil distribution pipe 23 is consistent with the cylinder number of engine.
The pretightning force of the valve spring 10 is more than wall friction in 8 rodless cavity of piston cylinder completely oil static pressure, piston and piston cylinder 8
Power, 8 piston gravity of piston cylinder and 9 gravity of upper holder for valve spring.
The number of the built-in electric controlled direct spray fuel injector 12 of the subsidiary combustion chamber 13 is with one surely according to Injection strategy
Or two, the applicability to ensure the device is wide.
The upper holder for valve spring 9 moves between the upper bottom crown of limiting plate 7.Limiting plate 7 can prevent valve 14
Opening speed is too fast and hits 15 bottom interior wall of main chamber.
The fuel feeding major loop, fuel feeding minor loop, the executing agency of main and auxiliary combustor's passage switching device, draining buffering
Circuit and this several part of electronic control unit should be with the cylinder number (examples of engine：6 cylinders, 8 cylinders etc.) match.Though Figure of abstract only specific exhibition
Show the valve control device and four cylinder control systems of single-cylinder engine, but other cylinder number (examples：6 cylinders, 8 cylinders etc.) engine also exist
Within right.
The course of work of present embodiment：
When the starter of automobile is started to work, total control equipment 17 is connected to instruction control motor 18 and rotates and drive oil pump 19
Work, while total control equipment 17 sends out instruction, and the solenoid valve control by controlling a cylinder to the solenoid valve control module 3 of one cylinder of control
Molding block 3 sends out instruction, opens the first 2/2-way solenoid valve 1 and closes the second 2/2-way solenoid valve 4.Similarly remaining each cylinder
Solenoid valve control module also execute this order, carry out the first fuel feeding of full oil circuit.In this period, oil pump 19 is constantly by hydraulic pressure
Oily each cylinder hydraulic circuit pipe 23 by the first check valve 21 feeding hydraulic oil distribution and communicated with hydraulic oil distribution pipe 23.Pressure
The pressure of hydraulic oil and fuel injection pressure signal is fed back into total control equipment 17 in the constantly monitoring hydraulic oil distribution pipe 23 of sensor 22, then by
Total control equipment 17 controls 18 rotating speed of motor and coordinates pressure limiting valve 24 that hydraulic oil distribution pipe 23 and other oil circuits is made to keep certain oil
Pressure.When the rodless cavity of a cylinder piston cylinder 8 is filled with hydraulic oil, that is, when critical condition of the valve 14 in closing, a cylinder
Solenoid valve control module 3 receive instruction, close the first 2/2-way solenoid valve 1, the second 2/2-way solenoid valve 4 still maintains
Closed state completes the first fuel feeding of full oil circuit.
In suction stroke or the compression travel early period of a cylinder of engine, be stored in dimethyl ether in dimethyl ether tank via
Fuel oil supply system sprays into a cylinder subsidiary combustion chamber 13 from electric controlled direct spray fuel injector 12.Methanol a cylinder suction stroke initial stage just
Enter air intake duct from fuel tank through fuel oil supply system, and forms gaseous mixture with a certain proportion of air and enter a cylinder main chamber
15.Remaining each cylinder also presses the moment and completes corresponding fuel delivery.
In a cylinder compression travel latter stage of engine, total control equipment 17 is connected to the instruction of engine upper level control unit
Afterwards, 18 rotating speed of motor is controlled on one side, sends out instruction to the solenoid valve control module of each cylinder on one side, opens the first 2/2-way electromagnetism
Valve 1.At this time in the fuel feeding minor loop of a cylinder, hydraulic oil after the first 2/2-way solenoid valve 1, the second check valve 2 again
It is injected into the piston cylinder 8 of a cylinder, carries out the timing fuel feeding of an oil supply cylinder minor loop.Due in the first fuel feeding of full oil circuit,
Valve 14 has been in the critical condition closed, so when hydraulic oil is re-injected into the piston cylinder 8 of a cylinder, in the piston of a cylinder
The pressure that piston upper surface in cylinder 8 generates will be greater than other external force such as pretightning force of valve spring 10, and valve 14 will be in and open
Open state.During fuel feeding minor loop timing fuel feeding, after fuel feeding in short-term, valve 14 experienced from closing to opening again to
The course opened with maximum opening.With continuing for fuel feeding, 14 aperture of valve also will be bigger, to prevent 14 aperture of valve excessive or
Excessive velocities and knock the top of piston 16, in addition to accurately controlling 1 opening time of the first 2/2-way solenoid valve, install limiting plate 7 additional
Guarantee can be provided for 14 safety of valve.The distance between bottom crown should match with the size of combustion chamber on limiting plate 7.Fuel feeding
The time in positive period accurately controls, and the fuel delivery of this period directly affects the maximum opening of valve 14, thus can pass through
Controlling this time carrys out 14 aperture of control valve.The fuel feeding minor loop timing that remaining each cylinder is also carried out each cylinder by acting order supplies
Oil.
When the valve 14 of a cylinder is opened, the methanol of high temperature and pressure and the gaseous mixture of air enter subsidiary combustion chamber 13 and one
The dimethyl ether for determining concentration is mixed and is caught fire in subsidiary combustion chamber 13, and combustion gas and unburned mixture pour main chamber 15 and in main combustion
It burns in room 15 and burns away, until completing entire burning.Total control equipment 17 controls a cylinder after valve 14 reaches maximum opening
Solenoid valve control module 3 sends out instruction, closes the first 2/2-way solenoid valve 1, stops the fuel feeding minor loop fuel feeding to a cylinder, from
And valve 14 is made to be kept it turned on maximum opening.The fuel feeding minor loop of a cylinder is in the pressurize phase at this time.Pressurize phase or a cylinder
The open state of valve 14 remains to this circulating exhaust stroke latter stage.In a cylinder instroke with regard to some methanol oxidation shape
At dimethyl ether, the dimethyl ether of formation can provide fuel after detaching, liquefying for the subsequent cycle of engine subsidiary combustion chamber 13.
In a cylinder instroke latter stage, the solenoid valve control module 3 of a cylinder is sent out after receiving the instruction that total control equipment 17 is sent out
Go out instruction, opens the second 2/2-way solenoid valve 4 and third 2/2-way solenoid valve 5 of a cylinder.The restoring force of valve spring 10
The piston that piston cylinder 8 is acted on by upper holder for valve spring 9 and piston rod makes second 2/2-way electricity of the hydraulic oil by a cylinder
Hydraulic oil container 20 is flowed back to after magnet valve 4 and third 2/2-way solenoid valve 5.When valve 14 is close takes a seat, the solenoid valve control of a cylinder
Molding block 3 is connected to and sends out instruction again, closes the third 2/2-way solenoid valve 5 of a cylinder.Hydraulic oil in piston cylinder 8 at this time
Hydraulic oil container 20 is flowed back to by the second 2/2-way solenoid valve 4 and throttle valve 6 of a cylinder.Since the hydraulic fluid port diameter of throttle valve 6 is remote
Caliber less than 5 place oil circuit oil pipe of third 2/2-way solenoid valve finally realizes valve so the back-flow velocity of hydraulic oil slows down
Door 14 is gently taken a seat, and the draining phase is completed.After valve 14 is closed, the solenoid valve control module 3 of a cylinder is again switched off the second two two
Three-way electromagnetic valve 4 is opened until next draining phase.Suction stroke in the subsequent cycle of one cylinder of engine or compression travel early period
When, dimethyl ether sprays into a cylinder subsidiary combustion chamber 13 via fuel oil supply system from electric controlled direct spray fuel injector 12 again.Methanol is next
The suction stroke initial stage of cycle enters air intake duct from fuel tank through fuel oil supply system, and is formed and mixed with a certain proportion of air
Gas enters a cylinder main chamber 15.In next compression travel latter stage of a cylinder, valve is opened again, completes working cycles.
With engine, remaining each cylinder enters working condition by corresponding order of work, and total control equipment 17 also controls in order
The solenoid valve control module of each cylinder to realize opening, keep it turning on and close in due course for each cylinder valve door in due course, and then is being started
The burning of dimethyl ether auxiliary methanol is realized in each cylinder of machine.
Present embodiment compared with prior art, has following good effect：
The present apparatus can accurately control the on-off action of valve 14 according to the actual condition of engine under electronic control unit effect
System, can control ignition process.It is assisted in methanol combustion process in view of dimethyl ether, a work period inner valve 14 is kept it turning on
The duration of state is relatively long, and the utility model keeps the opening and closing of valve 14 mutual indepedent by the second check valve 2,
It is effectively guaranteed the opening time of valve 14.According to the fuel delivery of the Operating condition adjustment fuel injection timing phase of engine, adjustable valve
The maximum opening of door 14.Valve remains the maximum opening to match with engine operating condition and opening time, improves mixing
Makings amount, and then effectively improve the efficiency of combustion of engine.Valve 14 is taken a seat constantly through hydraulic brake circuit, and valve 14 is slowed down
Impact between valve seat reduces noise and extends the service life of valve 14.Furthermore it is possible to change automatically controlled list as needed
The control strategy of member realizes multiple opening and closing of the valve 14 in a working cycles so that the control of valve 14 is more
Flexibly.The application of hydraulic oil distribution pipe 23 can also play accumulator other than for each oil supply cylinder minor loop fuel feeding, reduce
Pressure oscillation when fuel feeding ensures that the open state of each cylinder valve door is consistent.The working condition base of each cylinder of engine is allowed in this way
Originally it is consistent, therefore the dynamic property of engine, economy, emission performance and service life all increase.
Therefore, the utility model is in the premixing valve control for meeting dimethyl ether, methanol alcohol ether dual fuel engine compression ignition
Under the premise of function, have that each cylinder output power of engine consistent, high combustion efficiency, engine noise be small, valve service life
The characteristics of length with that can make valve keep larger opening open state for a long time.
Claims (6)
1. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system, including main and auxiliary combustor channel are opened
Close device, main and auxiliary combustor's passage switching device include piston cylinder (8), upper holder for valve spring (9), valve spring (10),
The head of lower valve spring base (11) and valve (14), the valve (14) is located between main chamber (15) and subsidiary combustion chamber (13)
Channel, it is characterised in that：Further include for controlling the multigroup of multigroup engine fuel cylinder main and auxiliary combustor passage switching device
Fuel feeding minor loop, fuel feeding minor loop include for the fuel feeding branch and draining branch for piston oil supply cylinder and draining, it is described multigroup
Fuel feeding minor loop is by same fuel feeding major loop fuel feeding；It is provided at the upper holder for valve spring (9) of the present apparatus for limiting upper valve
The limiting plate (7) of spring base (9) up and down motion extreme position.
2. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system according to claim 1,
It is characterized in that：The fuel feeding major loop includes the hydraulic oil container (20), oil pump (19), the first check valve for being in turn connected to form circuit
(21), hydraulic oil distribution pipe (23) and pressure limiting valve (24) are provided on the hydraulic oil distribution pipe (23) and multigroup are supplied for connecting
Oily minor loop oil-feed port.
3. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system according to claim 2,
It is characterized in that：The oil-feed port number of the hydraulic oil distribution pipe (23) is consistent with engine cylinder number.
4. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system according to claim 1,
It is characterized in that：The fuel feeding branch includes connecting the pipeline of fuel feeding major loop and piston cylinder, on the pipeline successively by fuel feeding direction
It is provided with the first 2/2-way solenoid valve (1) and the second check valve (2).
5. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system according to claim 4,
It is characterized in that：The draining branch includes the pipeline of connection piston cylinder (8) and fuel feeding major loop, pressed on the pipeline oil return direction according to
It is secondary to be provided with the second 2/2-way solenoid valve (4) and third 2/2-way solenoid valve (5), the third 2/2-way solenoid valve
(5) throttle valve (6) is parallel on.
6. a kind of valve control device for alcohol ether dual fuel engine Premixed combustion system according to claim 5,
It is characterized in that：It is provided on the fuel feeding minor loop for controlling the first 2/2-way solenoid valve (1), the second 2/2-way electromagnetism
The solenoid valve control module (3) of valve (4) and third 2/2-way solenoid valve (5) is provided with for controlling on the fuel feeding major loop
The total control equipment (17) of the solenoid valve control module (3) of each fuel feeding minor loop is made, pressure sensor is provided on fuel feeding major loop
(22), the pressure sensor (22) and the motor (18) for control oil pump (19) are connect with total control equipment (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909221.6U CN208024469U (en) | 2017-12-29 | 2017-12-29 | Valve control device for alcohol ether dual fuel engine Premixed combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909221.6U CN208024469U (en) | 2017-12-29 | 2017-12-29 | Valve control device for alcohol ether dual fuel engine Premixed combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208024469U true CN208024469U (en) | 2018-10-30 |
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ID=63901176
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721909221.6U Expired - Fee Related CN208024469U (en) | 2017-12-29 | 2017-12-29 | Valve control device for alcohol ether dual fuel engine Premixed combustion system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208024469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-12-29 CN CN201721909221.6U patent/CN208024469U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 Termination date: 20201229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |