CN107246307A - A kind of low speed machine variable exhaust energy cascade device and its control method - Google Patents
A kind of low speed machine variable exhaust energy cascade device and its control method Download PDFInfo
- Publication number
- CN107246307A CN107246307A CN201710580554.7A CN201710580554A CN107246307A CN 107246307 A CN107246307 A CN 107246307A CN 201710580554 A CN201710580554 A CN 201710580554A CN 107246307 A CN107246307 A CN 107246307A
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- exhaust
- valve
- energy cascade
- cascade device
- hydraulic cylinder
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 239000002828 fuel tank Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims description 43
- 239000002912 waste gas Substances 0.000 claims description 12
- 230000000740 bleeding effect Effects 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 229920008347 Cellulose acetate propionate Polymers 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009470 controlled atmosphere packaging Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000002000 scavenging effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Exhaust Silencers (AREA)
Abstract
It is an object of the invention to provide a kind of low speed machine variable exhaust energy cascade device and control method, including basic Hydraulic Elements, a single-action hydraulic cylinder, an energy cascade device and a back-moving spring such as fuel tank, filter, accumulator, overflow valve, two-bit triplet solenoid directional control valve.Single-action hydraulic cylinder and back-moving spring are located above and below energy cascade device respectively, and the position of axle is separated in control energy cascade device, and then control the switching of high-temperature exhaust air mouthful and cryopumping mouthful.When engine exhaust valve is opened, system enters the high-temperature exhaust air stage, when high-temperature exhaust air terminates, the piston of hydraulic cylinder promotes energy cascade device action, system enters the low temperature waiting stage until after exhaust valve closure, exhaust valve closure, system resets in the presence of back-moving spring.The switching instant of engine high/low temperature exhaust phase can just be changed by the dead electricity moment that obtains for changing two-bit triplet solenoid directional control valve, variable exhaust energy cascade is realized.
Description
Technical field
The present invention relates to a kind of engine variable exhaust energy grading plant and its control method, and in particular to a kind of low speed
Engine variable exhaust energy grading plant and its control method.
Background technology
Engine discharges waste gas and is filled with the overall process of fresh air or combustion mixture scavenging period.Do not took a breath
Journey, engine can not possibly continuous running.The air or air-fuel mixture amount that unit interval is filled with cylinder are to determine engine power output
The factor of amount.So, scavenging period is both the indispensable part of engine working process, is to determine to start motor-driven again
The particularly important link of power, economy.
Two stroke engine is the engine that a working cycles are completed in two strokes that bent axle turns around, and bent axle is every
Turn around, the external work done of engine is once.Two stroke engine inlet and outlet overlap period can account for the 70%~80% of ventilation phase, and
The total duration angle of scavenging period is again more much smaller than four-stroke engine.2 points of the above shows that two stroke engine time of exchanging gas is short, newly
With blending when fresh charge and again long waste gas, so ventilation quality is not high, coefficient of residual gas is big, and has a large amount of fresh charge streams
Lose.Two stroke engine begins to exhaust due to 65~75 °C of A Before Bottom Dead Center, so expansion working is terminated substantially to this.This
Reduce equivalent to effective expansion space stroke, scavenging in addition will expend more energy, so its effective thermal efficiency is significantly lower than four
Stroke Engine, specific fuel consumption is higher.During two stroke engine variable parameter operation, scavenging period is changed greatly, it is easy to deviateed
Optimized Matching state, so poor-performing during two stroke engine variable parameter operation.Two-stroke gasoline engine is stylish due to scavenging
Fresh charge effusion, not only makes fuel economy be deteriorated, unburned row HC is high-volume increased.
Above performance characteristics show, although the work done number of times of two stroke engine unit interval is more than four-stroke engine
One times, but its dynamic property only increases 50%~70%.Usually, two-stroke low speed diesel engine is used for large ship and power station machine
Group, and require that high and structure requires compact motorcycle, motor boat and small general dynamic mechanically in specific power, it is more
Use two-stroke gasoline engine.In recent years, two-stroke gasoline engine achieves rapid progress, such as using straight in electronic fuel injection, cylinder
The technologies such as injection are connect, its fuel consumption and emission performance is greatly improved, many people just make great efforts to expand it in automobile hair
Application in motivation
Open that the initial stage EGT discharged out of cylinder is high in two-stroke low speed engine exhaust valve, flow is big, waste gas it
Middle available energy is sufficient, and the waste gas now discharged enters high-temp waste gas and reclaims chamber, is connected with turbine after realization supercharging, by sky
Enter scavenging air box after cold, can effectively improve the operating efficiency of compressor after the waste gas separation of high temperature high-energy, realize high pressure-charging；
In air bleeding valve close to the down periods, the uniflow scavenging air themperature discharged out of cylinder is relatively low, and flow is small, the waste gas now isolated
Without turbine, scavenging air box is accessed after Direct Air-Cooled.Will according to the temperature change that exhaust valve opening duration different phase is vented
After exhaust energy classification, do not influenceing in cylinder in the case of charge, can effectively utilize exhaust energy, improving exhaust energy and utilize
Rate, is that subsequent power utilizes offer condition.
The content of the invention
It is an object of the invention to provide the low speed machine exhaust that can be separated motor exhaust according to energy difference
Energy cascade device and its control method.
The object of the present invention is achieved like this：
A kind of low speed machine variable exhaust energy cascade device and its control method, it is characterised in that：Described low speed machine can
Becoming exhaust energy grading plant includes basic Hydraulic Elements, single-action hydraulic cylinder, anti-attrition ball systems, an energy point
Stage arrangement and a back-moving spring；Hydraulic Elements and control hydraulic cylinder, energy cascade device upper end and single-action hydraulic cylinder phase
Even, lower end is connected with back-moving spring.
Described basic Hydraulic Elements are specifically included：Fuel tank, filter, hydraulic motor, accumulator, overflow valve, two
Three-way solenoid valve.
Described energy separation device is specifically included：Former exhaust outlet, separation axle are with separating dividing plate, separating what dividing plate was separated
High-temperature exhaust air mouthful and cryopumping mouthful；Left cylinder is bolted with former exhaust outlet, and left cylinder is with right cylinder body by assembling spiral shell
Bolt is assembled；High-temperature exhaust air mouthful is connected with high-temperature exhaust pipe with cryopumping pipe by connecting bolt respectively with cryopumping mouthful.
Separation axle in described energy separation device is the tapered axle of one end band, with tapered one end with resetting bullet
Spring is connected, and the other end is connected with hydraulic cylinder；Separate dividing plate, high-temperature exhaust air mouthful, cryopumping mouthful and from former exhaust outlet to height
The pipeline of warm exhaust outlet is arranged as required to as circle, rectangle etc..
Described anti-attrition ball systems are specifically included：Anti-attrition ball systems at least include 4 balls, 3 fixing bolts；Rolling
Pearl is uniformly arranged between circular cover and lower circular cover, and screw bolt and nut is distributed in upper and lower cover plates between two balls
It is fixed；There is size of the size slightly larger than ball of half ball groove and semi-spherical grooves in upper and lower cover plates.
A kind of low speed machine variable exhaust energy cascade device and its control method, it is characterised in that：It is powered by control three
System is set to realize the time-sharing multiplex of exhaust at the time of magnetic reversal valve gain and loss current potential, specific steps include：
(1) air bleeding valve is opened, high-energy waste gas is discharged, two-bit triplet magnetic valve is in power failure state；Single-action hydraulic cylinder
Low pressure oil is inside passed through, spring is in separation dividing plate in original state, exhaust energy grading plant and is in original state, now separates
Dividing plate has blocked cryopumping mouthful, and system enters the high-temperature exhaust air stage；
(2) at the end of high-temperature exhaust air, two-position three-way valve obtains electric, hydraulic oil is passed through in hydraulic cylinder, separation axle is in piston rod
Promotion under compression reseting spring move downward until separation dividing plate blocks high-temperature exhaust air mouthful, cryopumping mouthful is opened, and is now
System is in the low temperature waiting stage；
(3) when engine exhaust valve is closed, the cryopumping stage terminates；Two-bit triplet magnetic valve dead electricity, hydraulic cylinder leads to
Enter low pressure oil, now separate axle and moved upwards under the elastic force effect of back-moving spring, when the separation dividing plate in separation axle is soon kept off
Firmly during cryopumping mouthful, tapered one section of axle of separation and action of reset spring make system slowly reset；Now system reset, directly
To exhaust valve opening next time, air bleeding valve energy cascade system enters subsequent cycle.
Described two-bit triplet solenoid directional control valve is specifically included：Two-bit triplet solenoid directional control valve the dead electricity moment by difference
In the case of high/low temperature exhaust phase switching instant determine；Oil pressure in the gain and loss electric control hydraulic cylinder of two-bit triplet solenoid directional control valve
Conducting, the motion of the piston rod control separation axle of hydraulic cylinder, by separating dividing plate in different CAPs regulation separation axle
Position；Valve lift curve under different crank angles corresponds to the level curve of reversal valve.
Advantage of the invention is that：Separator assembling designed by the present invention is simple, and manufacture difficulty is small；It is of the invention set
The energy cascade system of meter can realize that exhaust energy classification is complete variable, it is only necessary to which change two-bit triplet magnetic valve obtains dead electricity phase
Position, it is possible to change the high/low temperature exhaust moment of engine；The energy cascade device that the present invention is designed can be by the useless of engine
Gas is separated according to energy grade, compared with engine exhaust is post-processed, the different brackets separated according to energy
Waste gas may be used as different purposes, improve the utilization rate that engine discharges waste gas；Energy cascade system designed by the present invention
Frictional dissipation is small；Energy cascade system vibration noise designed by the present invention is small.
Brief description of the drawings
Fig. 1 is systematic schematic diagram of the invention；
Fig. 2 is the schematic diagram of energy cascade device；
Fig. 3 is the three-view diagram of separation axle；
Fig. 4 is the top view of antifriction ball；
Fig. 5 is the assembling schematic diagram of antifriction ball；
Fig. 6 is the control sequential figure of magnetic valve.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
Low speed machine exhaust energy piece-rate system includes fuel tank 17, filter 16, hydraulic motor 15, accumulator 13, overflow valve
14th, the basic Hydraulic Elements such as two-bit triplet solenoid directional control valve 12, a single-action hydraulic cylinder 11, an energy cascade device with
And a back-moving spring 5.Wherein energy cascade device includes former exhaust outlet 8, separation axle and separates dividing plate 6, separates dividing plate separation
The high-temperature exhaust air mouthful 4 opened and cryopumping mouthful 2, left cylinder 7, right cylinder body 3, the assembling bolt for assembling left cylinder and right cylinder body
10th, for being connected connecting bolt 1, the use of high-temperature exhaust pipe and cryopumping pipe respectively in high-temperature exhaust air mouthfuls 4 and cryopumping mouthful 2
In the ball systems 9 for reducing friction.
Single-action hydraulic cylinder is used to promote separation axle in separator to be moved downward with separating dividing plate in particular moment, resets
Spring 5 is used to reset separator after exhaust valve closing.
The position of dividing plate is separated in 6 by being adjusted in different CAPs, high-temperature exhaust air mouthful 4 and cryopumping is realized
The time-sharing multiplex of mouth 2.
Separation dividing plate in wherein 6 can be shaped to circular bulkheads, rectangular clapboard according to the former exhaust outlet 8 of engine
Deng.High-temperature exhaust air mouthful 4 can be also according to needs with cryopumping mouthful 2 and the pipeline from former exhaust outlet 8 to high/low temperature exhaust outlet
Be provided in round, rectangle etc..
The separator provided according to examples detailed above of the present invention, is used to reduce the ball 9 rubbed including at least a pair.
Separation axle 6 in the present invention is the tapered axle of one end band, can play a part of buffering in the system reset stage.
Antifriction ball 9 in the present invention is assembled simply, it is possible to use the rolling friction of ball replaces the sliding friction of axle, has
Effect reduces frictional dissipation.
Have in antifriction ball 9 in the present invention between ball 20 and upper circular cover 18 and lower circular cover 19 it is certain between
Gap, it is ensured that after assembly, ball can be rotated up in any free degree side.
Antifriction ball 9 in the present invention, at least including 4 balls, 3 fixing bolts.
The present invention can realize variable exhaust energy point by changing the dead electricity moment that obtains of two-bit triplet solenoid directional control valve 12
Level, for different engine operating conditions, realizes optimal exhaust energy classification.
In this example, exhaust outlet is rectangular air outlet, and system is equipped with a pair of antifriction balls 9.
As shown in Figure 1 and Figure 2, full variable exhaust energy cascade system includes fuel tank 17, filter 16, hydraulic motor 15, storage
Can the basic Hydraulic Elements of device 13, overflow valve 14, two-bit triplet solenoid directional control valve 12 etc., single-action hydraulic cylinder 11, one
Energy cascade device and a back-moving spring 5.Wherein energy cascade device includes former exhaust outlet 8, separation axle with separating dividing plate
6th, the separation dividing plate high-temperature exhaust air that separates mouthful 4 and cryopumping mouthful 2, left cylinder 7, right cylinder body 3, for assemble left cylinder with it is right
The assembling bolt 10 of cylinder body, for being connected high-temperature exhaust pipe and cryopumping pipe respectively with cryopumping mouth 2 in high-temperature exhaust air mouthfuls 4
Connecting bolt 1, for reduce friction ball systems 9.
It is illustrated in figure 4 the assembling schematic diagram of antifriction ball system, antifriction ball is by upper cover plate 1, lower cover 2, ball 3,
Bolt 4, nut 5 is constituted.Screw bolt and nut is distributed between two balls, for upper and lower cover plates to be fixed, in upper and lower cover plates
There is half ball groove, for placing ball, the size of semi-spherical grooves is slightly larger than the size of ball so that ball can be rolled freely in groove
It is dynamic.
As shown in figure 5, in antifriction ball top view, ball is than circular cover up and down closer to central axis so that separation
Axle after assembly, is directly contacted with ball, during separation axle moves up and down, circle of the ball in circular cover up and down
Rolled in groove, system is changed into rolling friction from original sliding friction, friction reduces, and frictional dissipation reduces, and system effectiveness is improved.
Such as the schematic diagram that Fig. 6 is system exhaust timing, the initial stage opened in air bleeding valve, the energy of discharge waste gas is all higher,
System should be at the high-temperature exhaust air stage, and now two-bit triplet magnetic valve 12 is in power failure state, single-action hydraulic cylinder 11 and is passed through
Low pressure oil, spring 5 is in separation dividing plate in original state, exhaust energy grading plant and is in original state, as shown in Fig. 2 i.e.
Now separation dividing plate has blocked cryopumping mouthful 2, and system enters the high-temperature exhaust air stage.
When high-temperature exhaust air terminates, two-position three-way valve 12 obtains electric, hydraulic oil is passed through in hydraulic cylinder, separation axle 6 is in work
Compression reseting spring 5 is moved downward until separation dividing plate 6 blocks high-temperature exhaust air mouthful 4, cryopumping mouthful 2 dozens under the promotion of stopper rod
Open, now system is in the low temperature waiting stage.
When engine exhaust valve is closed, the cryopumping stage terminates, the dead electricity of two-bit triplet magnetic valve 12, and hydraulic cylinder 11 leads to
Enter low pressure oil, now separate axle 6 and moved upwards under the elastic force effect of back-moving spring 5, the separation dividing plate in 6 soon blocks low
When warm exhaust outlet 2, because there is certain taper separation axle 6 upper end, as shown in figure 3, causing separation axle 6 and upper end ball 9
Between rub it is increasing, separation axle reset speed reduce, reduce separation dividing plate reset impact, reduce making an uproar for system
Sound.Now system reset, until exhaust valve opening next time, air bleeding valve energy cascade system enters subsequent cycle.
, can be by changing the gain and loss of two-bit triplet solenoid directional control valve 12 for the engine exhaust situation under different operating modes
At the electric moment, the difference of high/low temperature exhaust phase switching instant under different operating modes is realized, realize optimal exhaust energy classification, improve
Exhaust gas utilization rate.
Claims (7)
1. a kind of low speed machine variable exhaust energy cascade device and its control method, it is characterised in that：Described low speed machine is variable
Exhaust energy grading plant includes basic Hydraulic Elements, single-action hydraulic cylinder, anti-attrition ball systems, an energy cascade
Device and a back-moving spring；Hydraulic Elements are connected with control hydraulic cylinder, energy cascade device upper end with single-action hydraulic cylinder,
Lower end is connected with back-moving spring.
2. a kind of low speed machine variable exhaust energy cascade device according to claim 1 and its control method, its feature exist
In described basic Hydraulic Elements are specifically included：Fuel tank, filter, hydraulic motor, accumulator, overflow valve and two three
Electric change valve.
3. a kind of low speed machine variable exhaust energy cascade device according to claim 1 and its control method, its feature exist
In described energy separation device is specifically included：Former exhaust outlet, separation axle are with separating dividing plate, separating the high temperature that dividing plate is separated
Exhaust outlet and cryopumping mouthful；Left cylinder is bolted with former exhaust outlet, and left cylinder is filled with right cylinder body by assembling bolt
Match somebody with somebody；High-temperature exhaust air mouthful is connected with high-temperature exhaust pipe with cryopumping pipe by connecting bolt respectively with cryopumping mouthful.
4. a kind of low speed machine variable exhaust energy cascade device according to claim 1 and its control method, its feature exist
In：Separation axle in described energy separation device is the tapered axle of one end band, with tapered one end and back-moving spring phase
Even, the other end is connected with hydraulic cylinder；Separate dividing plate, high-temperature exhaust air mouth, cryopumping mouthful and arranged from former exhaust outlet to high/low temperature
The pipeline of gas port is arranged as required to as circle, rectangle etc..
5. a kind of low speed machine variable exhaust energy cascade device according to claim 1 and its control method, its feature exist
In described anti-attrition ball systems are specifically included：Anti-attrition ball systems at least include 4 balls, 3 fixing bolts；Ball is equal
Even to be arranged between circular cover and lower circular cover, screw bolt and nut consolidates upper and lower cover plates between being distributed in two balls
It is fixed；There are half ball groove, and size of the size slightly larger than ball of semi-spherical grooves in upper and lower cover plates.
6. a kind of low speed machine variable exhaust energy cascade device and its control method, it is characterised in that：Described control method is led to
System is set to realize the time-sharing multiplex of exhaust at the time of crossing control three-way solenoid valve gain and loss current potential, specific steps include：
(1) air bleeding valve is opened, high-energy waste gas is discharged, two-bit triplet magnetic valve is in power failure state；Lead in single-action hydraulic cylinder
Enter low pressure oil, spring is in separation dividing plate in original state, exhaust energy grading plant and is in original state, now separates dividing plate
Cryopumping mouthful is blocked, system enters the high-temperature exhaust air stage；
(2) at the end of high-temperature exhaust air, two-position three-way valve obtains electric, and hydraulic oil is passed through in hydraulic cylinder, separates axle pushing away in piston rod
Dynamic lower compression reseting spring is moved downward until separation dividing plate blocks high-temperature exhaust air mouthful, and cryopumping mouthful is opened, now at system
In the low temperature waiting stage；
(3) when engine exhaust valve is closed, the cryopumping stage terminates；Two-bit triplet magnetic valve dead electricity, hydraulic cylinder is passed through low
Force feed, now separate axle back-moving spring elastic force effect under move upwards, when separation axle in separation dividing plate soon block it is low
During warm exhaust outlet, tapered one section of axle of separation and action of reset spring make system slowly reset；Now system reset, under
Exhaust valve opening, air bleeding valve energy cascade system enters subsequent cycle.
7. a kind of low speed machine variable exhaust energy cascade device according to claim 6 and its control method, its feature exist
In：The dead electricity moment high/low temperature exhaust phase switching instant under different situations that obtains of two-bit triplet solenoid directional control valve is determined；Two
The conducting of oil pressure in the gain and loss electric control hydraulic cylinder of three-way solenoid valve, the motion of the piston rod control separation axle of hydraulic cylinder,
The position that dividing plate is separated in separation axle is adjusted by different CAPs；Valve lift curve under different crank angles
Corresponding to the level curve of reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580554.7A CN107246307B (en) | 2017-07-17 | 2017-07-17 | Control method of variable exhaust energy grading device of low-speed machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580554.7A CN107246307B (en) | 2017-07-17 | 2017-07-17 | Control method of variable exhaust energy grading device of low-speed machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107246307A true CN107246307A (en) | 2017-10-13 |
| CN107246307B CN107246307B (en) | 2020-09-25 |
Family
ID=60015357
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710580554.7A Active CN107246307B (en) | 2017-07-17 | 2017-07-17 | Control method of variable exhaust energy grading device of low-speed machine |
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| Country | Link |
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| CN (1) | CN107246307B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538577A (en) * | 2018-11-20 | 2019-03-29 | 哈尔滨工程大学 | A kind of large-diameter low speed machine exhaust valve action test set and its control method |
| CN114396329A (en) * | 2021-12-21 | 2022-04-26 | 哈尔滨工程大学 | Cylinder head separating valve structure for realizing exhaust stage separation of low-speed machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072583A (en) * | 1989-02-08 | 1991-12-17 | Nissan Motor Company, Ltd. | Exhaust system for internal combustion engines |
| JP2005069238A (en) * | 2004-12-13 | 2005-03-17 | Akio Ishida | Exhaust emission control system for engine |
| CN201273229Y (en) * | 2008-08-28 | 2009-07-15 | 中国第一汽车集团公司无锡柴油机厂 | Double-channel butterfly valve structure |
| CN102305222A (en) * | 2011-08-24 | 2012-01-04 | 天津大学 | Electro-hydraulic variable valve device with energy accumulator buffer function and energy storage method thereof |
| CN106321254A (en) * | 2016-09-12 | 2017-01-11 | 哈尔滨工程大学 | Exhaust energy classifying device for low-speed machine and control method of exhaust energy classifying device |
| CN106812790A (en) * | 2015-11-16 | 2017-06-09 | 祥莹有限公司 | Ball bearing assembly |
-
2017
- 2017-07-17 CN CN201710580554.7A patent/CN107246307B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072583A (en) * | 1989-02-08 | 1991-12-17 | Nissan Motor Company, Ltd. | Exhaust system for internal combustion engines |
| JP2005069238A (en) * | 2004-12-13 | 2005-03-17 | Akio Ishida | Exhaust emission control system for engine |
| CN201273229Y (en) * | 2008-08-28 | 2009-07-15 | 中国第一汽车集团公司无锡柴油机厂 | Double-channel butterfly valve structure |
| CN102305222A (en) * | 2011-08-24 | 2012-01-04 | 天津大学 | Electro-hydraulic variable valve device with energy accumulator buffer function and energy storage method thereof |
| CN106812790A (en) * | 2015-11-16 | 2017-06-09 | 祥莹有限公司 | Ball bearing assembly |
| CN106321254A (en) * | 2016-09-12 | 2017-01-11 | 哈尔滨工程大学 | Exhaust energy classifying device for low-speed machine and control method of exhaust energy classifying device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538577A (en) * | 2018-11-20 | 2019-03-29 | 哈尔滨工程大学 | A kind of large-diameter low speed machine exhaust valve action test set and its control method |
| CN109538577B (en) * | 2018-11-20 | 2021-01-05 | 哈尔滨工程大学 | Large-cylinder-diameter low-speed machine exhaust valve test device and control method thereof |
| CN114396329A (en) * | 2021-12-21 | 2022-04-26 | 哈尔滨工程大学 | Cylinder head separating valve structure for realizing exhaust stage separation of low-speed machine |
| CN114396329B (en) * | 2021-12-21 | 2023-01-03 | 哈尔滨工程大学 | Cylinder head separating valve structure for realizing exhaust stage separation of low-speed machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107246307B (en) | 2020-09-25 |
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