CN108757172A - A kind of half gear engine of four cylinders linkage - Google Patents
A kind of half gear engine of four cylinders linkage Download PDFInfo
- Publication number
- CN108757172A CN108757172A CN201810488991.0A CN201810488991A CN108757172A CN 108757172 A CN108757172 A CN 108757172A CN 201810488991 A CN201810488991 A CN 201810488991A CN 108757172 A CN108757172 A CN 108757172A
- Authority
- CN
- China
- Prior art keywords
- half gear
- gear
- rack
- piston
- axle sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1816—Number of cylinders four
Abstract
The invention discloses a kind of half gear engines of four cylinders linkage, 4 cylinders including horizontally-opposed setting and the piston being set in each cylinder, further include gear drive and link assembly, half gear of at least one and at least 1 pair of rack mating with half gear that the gear drive includes axle sleeve, is set in axle sleeve, transmission shaft is set on the axis of the axle sleeve, half gear is fixedly installed on transmission shaft, and every 1 pair of rack is individually fixed in right over half gear and on the sleeve lining of underface and vertical with the axis of transmission shaft；The link assembly includes 4 connecting rods, and one end of each connecting rod connects piston, an other end and is all connected on axle sleeve.It is few, with small vibration that the engine structure is related to part, by giving half gear one cushion effect, loss, increasing service life of engine caused by part can be reduced, and there is no the problem for causing capacity usage ratio low of lighting a fire near top dead-centre in traditional crank link mechanism, improve engine efficiency.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of half gear engine of four cylinders linkage.
Background technology
Toggle is the core of conventional engines, and the reciprocating motion of piston is changed into bent axle by toggle
Circular motion and when being output to wheel, piston must have shaking, generate collision friction with cylinder wall, be unfavorable for the steady of system
It is qualitative, it has a certain impact to the work of engine.In addition, also inevitably bringing problems with：1, firing stroke, it is living
It is maximum to fill in the thrust being subject to, but due to being near top dead-centre, only the thrust of fraction is as torque, for pushing bent axle to revolve
Turn, energy utilization efficiency is low；2. the impulse force of piston almost directly acts on bent axle, which has aggravated bent axle
Loss.And current various engines are substantially all regardless of cylinder modes of emplacement and use crank connecting link knot
Structure, there are similar problems in former capital.
Although there are also, instead of toggle, there is also many problems in engine at present.For example, Chinese
Patent application CN106812603A discloses a kind of pancake engine, including horizontally-opposed four cylinders and is set to gas
Piston and link assembly in cylinder and gear drive, link assembly include connecting rod one and connecting rod two, the both ends of connecting rod one
It is separately connected piston one and piston two, the both ends of connecting rod two are separately connected piston three and piston four；Gear drive includes spine
Wheel one, ratchet two, gear one, gear two and transmission gear, ratchet one are coaxially disposed with gear one, and ratchet two and gear two are coaxial
Setting, and ratchet one is identical with the direction of ratchet two, transmission gear set between gear one and gear two, and respectively with gear one
It is engaged with gear two；Rack is respectively equipped on connecting rod one and connecting rod two, and the rack on connecting rod engages respectively with ratchet；Driving cog
Wheel connection power output shaft.But the patent application has the following problems：1）Ratchet is to do step motion, power transmission very for pushing
Small mechanism is not suitable for the larger power of transmission, but in the disclosure in this patent, the power that piston is sent directly is applied to ratchet
On, ratchet is subject to not next；2）Ratchet is typically for preventing gear from reversing, and when normally movable, active pawl is
It is movable, it should be able to be avoided automatically in ratchet normal rotation, in order to avoid the abrasion of ratchet is caused, but in the disclosure in this patent,
The rack being connected on piston, normally rotates in ratchet（It is not subject to power）When, it cannot avoid, can be caused to ratchet very big automatically
Abrasion, this is difficult to receive.Another Chinese patent application CN106948938A discloses a kind of horizontal opposition type and starts
Machine structure, the pancake engine structure include connecting rod, output shaft and driving gear set, and the both ends of the connecting rod are separately connected
There are piston, the connecting rod to be equipped with lower rack close to intermediate position；The driving gear set includes one-way clutch and difference
The first gear and second gear being connected with exporting axis, the second gear are engaged with lower rack；Two one-way clutch
The transmission direction of device is identical；The driving gear set further includes gear ring and several planetary gears, is set respectively inside and outside the gear ring
There are the interior gear teeth and external gear teeth and external gear teeth is engaged with lower rack；The planetary gear is engaged with the interior gear teeth and first gear simultaneously.
But the patent application has the following problems：1）Shaft 21 design it is unreasonable, shaft 21 be not specification in mention " can also
Remaining four piston 17 is provided and moves required power ", most important and indispensable role is to maintain such one kind
Synchronism.Because in other words the other end of expansion stroke piston face compression stroke always can not possibly will appear a kind of igniting always
Thrust and compression thrust not in the power of the state of the same side, torque that such power will be opposite as two is turning
On axis 21, more seriously, this power for making shaft 21 reverse can also constantly change direction, it is easy to cause fatigue, for the time being not
So big power is said, even if a little bit smaller power is all difficult to bear using a shaft 21.2）The patent application uses excessive
Planetary gear 14, these planetary gears not only process inconvenience, and main shaft is thousands of turn when, rotating speed may be up to ten thousand turns, furthermore, turn
Dynamic direction also can be very cumbersome change, these types of factor causes it that can bring many troubles in specific application.
Invention content
To overcome the above deficiencies, the invention provides a kind of half gear engine of four cylinders linkage, the engines
It is few, with small vibration that structure is related to part, by giving half gear one cushion effect, can reduce the loss caused by part, extend hair
Motivation service life, and there is no igniting causes capacity usage ratio is low to ask near top dead-centre in traditional crank link mechanism
Topic, improves engine efficiency.
Technical solution is used by the present invention overcomes its technical problem：
A kind of four cylinders link half gear engine, including 4 cylinders of horizontally-opposed setting and the work that is set in each cylinder
Plug, further includes gear drive and link assembly, the gear drive includes axle sleeve, be set in axle sleeve at least 1
A half gear and at least 1 pair of rack mating with half gear, transmission shaft is arranged on the axis of the axle sleeve, and half gear fixes peace
Loaded on transmission shaft, every 1 pair of rack be individually fixed in right over half gear and on the sleeve lining of underface and with transmission shaft
Axis is vertical；The link assembly includes 4 connecting rods, and one end of each connecting rod connects piston, an other end and is all connected to
On axle sleeve.
Currently preferred, half gear is one, rack is a pair of, and half gear is set to the axis centre position of axle sleeve
Place is set, a pair of of rack is respectively arranged at the surface and underface of half gear.
Currently preferred, half gear is two and model is identical, rack is two pairs and model is identical, two and half teeth
Wheel is symmetrically arranged is located at half gear of the same side on the extended line of axle sleeve inner link, two pairs of racks are respectively arranged at it
Surface and underface.
Currently preferred, the transmission shaft is divided into two sections, and each section of transmission shaft corresponds to a pair of pistons, can reduce in this way
Fatigue deformation of the transmission shaft under same direction moment loading.
It is currently preferred, the half of the gear perimeter of the length per toothed rack >=half；Further preferably, every described
The length of rack is equal to the half of gear perimeter.
Currently preferred, 4 cylinder models are identical, correspondingly, the model of 4 pistons is also identical.
The beneficial effects of the invention are as follows：
1, stability is high：
1）The present invention realizes the transformation of the circular motion for reciprocating to transmission shaft of piston, piston using gear drive
It always works on straight line, is rotated by the inertia of half gear to realize continuous transmission, be not in brace and connecting rod framework
Shaking phenomenon, while again by four cylinders it is opposed in the way of absorb acting after piston momentum and for another piston compression punching
Journey is the process of a buffering so that the impact of inside configuration will not be excessive, ensure that the normal operation of system.
2）Toggle can give crank reversed torque in compression stroke, and in the present invention half gear rotation
Direction is constant, so that the torque that transmission shaft is subject to is to the same direction, avoids bent axle in toggle
Fatigue caused by frequently changing direction.
2, safe：
1）There are the bent axles of plane motion in toggle, and movement is that one-dimensional there is no the accidents such as scuffing of cylinder bore in the present invention
The possibility of generation has higher safety.
2）Toggle is since piston and cylinder are by lateral compression power, and design is complicated, and problem rate is high, in the present invention
Lateral pressure is not present to piston, it is safer.
3）Piston did not had the component of transmission shaft always in expansion stroke to the active force of transmission shaft, mitigated to a certain extent
The impact that transmission shaft is subject to reduces the deformation of transmission shaft.
3, economy：
1）It is few, with small vibration that the engine structure of the present invention is related to part, by giving half gear one cushion effect, can reduce pair
Loss, increasing service life of engine caused by part.
2）Remaining energy after being done work using cylinder, compression is in the cylinder of compression stroke, energy saving.
3）Compared to toggle, maximum thrust when lighting a fire can be largely utilized.
4）Present invention uses a relatively large axle sleeves, all simpler on realizing difficulty and technological requirement, drop
The low requirement designed piston and transmission shaft, can substantially reduce cost.
4, efficient：
The problem lighted a fire near top dead-centre in traditional crank link mechanism and cause capacity usage ratio low is not present in the present invention, improves
Engine efficiency.
5, applied widely：
The structure of the present invention is applicable to all kinds of motor vehicles and factory power mechanism and energy-efficient equal various power confession
It is applied widely to field based on horizontally-opposed double-click piston engine.
Description of the drawings
Fig. 1 is the main structure diagram of four cylinders, half gear engine of linkage of an embodiment of the present invention.
Fig. 2 is the left view structural representation of four cylinders, half gear engine of linkage of another embodiment of the present invention.
Fig. 3 is the overlooking structure diagram of four cylinders, half gear engine of linkage of the embodiment of the present invention.
In figure, 1, axle sleeve, 2, half gear, 3, rack, 4, transmission shaft, 5, connecting rod, 6, cylinder one, 7, piston one, 8, cylinder
Two, 9, piston two, 10, cylinder three, 11, piston three, 12, cylinder four, 13, piston four, 21, half gear one, 22, half gear two,
31, rack one, 32, rack two.
Specific implementation mode
For a better understanding of the skilled in the art, being done in the following with reference to the drawings and specific embodiments to the present invention
It is further described, following be merely exemplary does not limit protection scope of the present invention.
A kind of half gear engine of four cylinders linkage of the present invention includes the 4 of horizontally-opposed setting as illustrated in fig. 1 and 2
The piston a model identical cylinder and be set in each cylinder, 4 cylinders are respectively cylinder 1, cylinder 28, gas
4 12,4 cylinder 3 10, cylinder pistons are respectively piston 1, piston 29, piston 3 11, piston 4 13, cylinder 1 and piston
One 7 is mating, and cylinder 28 and piston 29 are mating, and cylinder 3 10 and piston 3 11 are mating, and cylinder 4 12 and piston 4 13 are mating.
The present invention's thes improvement is that as shown in Figs. 1-3, which further includes gear drive and connection rod set
Part, the gear drive includes axle sleeve 1, half gear 2 of at least one that is set in axle sleeve and at least 1 pair and half gear
Transmission shaft 4 is arranged on the axis of the axle sleeve 1 for mating rack 3, and half gear 2 is fixedly installed on transmission shaft 4, transmission shaft 4
Axis passes through the gear disc of the center of circle of half gear 2 and half gear 2 vertical with the axis of transmission shaft 4, and every 1 pair of rack 3 is solid respectively
Due on the sleeve lining of half gear surface and underface and vertical with the axis of transmission shaft 4；The link assembly includes 4
Connecting rod 5, one end of each connecting rod connects a piston, the other end is all connected on axle sleeve 1.
In the present embodiment, the half of length >=half gear, 2 perimeter per toothed rack 3；Further preferably, every described
The length of rack 3 is equal to the half of 2 perimeter of gear.
In the present embodiment, from the point of view of Fig. 1 and Fig. 3, half gear 2 is one, rack 3 is a pair of, half gear 2 setting
At the axis centre position of axle sleeve, a pair of of rack 3 is respectively arranged at the surface and underface of half gear, as viewed from Fig. 1, only
There are one rack can be shown, another rack is blocked.Alternatively, from the point of view of in conjunction with Fig. 2 and Fig. 3, half gear 2 be two and
Model is identical, rack 3 is two pairs and model is identical, two and half gears 2（That is half gear 1 and half gear 2 22）Respectively symmetrically
It is set on the extended line of axle sleeve inner link 5, two pairs of racks 3（I.e. a pair of of rack 1 and a pair of of rack 2 32）It is respectively arranged at
Be located at the surface and underface of half gear of the same side with it, i.e., a pair of of rack 1 be located at the surface of half gear 1 with
Underface, a pair of of rack 2 32 is located at the surface and underface of half gear 2 22, as viewed from Fig. 2, in a pair of of rack 1 only
There are one rack one can show, another rack one is blocked, similarly in a pair of of rack 2 32 there are one rack two can show
Show, another rack two is blocked, as viewed from Fig. 3, can only be shown there are one half gear in two and half gears, another half tooth
Wheel is blocked, and also only a pair of of in two pairs of racks rack can be shown, another pair rack is blocked.When two and half gears of setting
2 and when two pairs of racks 3, can the transmission shaft 4 be divided into two sections, as shown in Fig. 2, each section of transmission shaft corresponds to a pair of pistons,
Fatigue deformation of the transmission shaft 4 under same direction moment loading can be reduced in this way.
The reciprocating motion of piston is converted to transmission shaft by four cylinders, half gear engine of linkage described in the embodiment of the present invention
The operation principle of circular motion is：4 cylinders are opposed two-by-two, and 4 cylinders are due to being in different working condition when work, and 4
A piston moves in the same direction, drives transmission shaft 4 to move in a circle to export with engaging for half gear 2 by rack 3
Power.
One working cycles of four cylinders, half gear engine of linkage described in the embodiment of the present invention include four-stage, are such as schemed
1, specific as follows shown in 2：
In order to solve half gear 2 with the transmission process of rack 3, half gear, 2 velocity jump can when piston is located at bottom dead center-nearby
Hard hit problem caused by energy, piston 1 and piston 3 11, piston 29 are pairs of respectively with piston 4 13.
Original state：One 7 corresponding cylinder 1 of piston is induction stroke, and 3 11 corresponding cylinder 3 10 of piston is compression
Stroke, 29 corresponding cylinder 28 of piston are firing stroke, and 4 13 corresponding cylinder of piston, 4 12 exhaust stroke is each to realize
Piston can be realized in the stroke stage and liquidated, reduce the suffered impact force of gear speed mutation, while piston after acting can be absorbed
Momentum, and be used for another piston compression stroke.
Second moment state：One 7 corresponding cylinder 1 of piston is compression stroke, and 3 11 corresponding cylinder 3 10 of piston is
Firing stroke, 29 corresponding cylinder 28 of piston are exhaust stroke, 4 13 corresponding cylinder of piston, 4 12 induction stroke, to realize
It can realize and liquidates in the stroke stage per a pair of pistons, reduce the suffered impact force of gear speed mutation, while after capable of absorbing and doing work
The momentum of piston, and it is used for another piston compression stroke.
Third moment state：One 7 corresponding cylinder 1 of piston is firing stroke, and 3 11 corresponding cylinder 3 10 of piston is
Exhaust stroke, 29 corresponding cylinder 28 of piston are induction stroke, 4 13 corresponding cylinder of piston, 4 12 compression stroke, to realize
It can realize and liquidates in the stroke stage per a pair of pistons, reduce the suffered impact force of gear speed mutation, while after capable of absorbing and doing work
The momentum of piston, and it is used for another piston compression stroke.
4th moment state：One 7 corresponding cylinder 1 of piston is exhaust stroke, and 3 11 corresponding cylinder 3 10 of piston is
Induction stroke, 29 corresponding cylinder 28 of piston are compression stroke, 4 13 corresponding cylinder of piston, 4 12 firing stroke, to realize
It can realize and liquidates in the stroke stage per a pair of pistons, reduce the suffered impact force of gear speed mutation, while after capable of absorbing and doing work
The momentum of piston, and it is used for another piston compression stroke.
In description of the invention, the orientation of the instructions such as term "center", " length ", "upper", "lower", "left", "right", "inner"
Or position relationship describes merely to description is of the invention with simplified to be based on the orientation or positional relationship shown in the drawings, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
Above only describes the basic principles and preferred embodiment of the present invention, and those skilled in the art can be according to foregoing description
Many changes and improvements are made, these changes and improvements should belong to the scope of protection of the present invention.
Claims (7)
- Half gear engine 1. a kind of four cylinders link, including 4 cylinders of horizontally-opposed setting and be set in each cylinder Piston, which is characterized in that further include gear drive and link assembly, the gear drive includes axle sleeve（1）, setting In half gear of at least one in axle sleeve（2）And at least 1 pair of rack mating with half gear（3）, the axle sleeve（1）Axis Upper setting transmission shaft（4）, half gear（2）It is fixedly installed in transmission shaft（4）On, every 1 pair of rack（3）It is individually fixed in half gear just On the sleeve lining of top and underface and and transmission shaft（4）Axis it is vertical；The link assembly includes 4 connecting rods（5）, often One end of a piece connecting rod connects piston, an other end and is all connected to axle sleeve（1）On.
- Half gear engine 2. four cylinder according to claim 1 links, which is characterized in that half gear（2）For one, Rack（3）For a pair, half gear（2）It is set at the axis centre position of axle sleeve, a pair of of rack（3）It is respectively arranged at half gear Surface and underface.
- Half gear engine 3. four cylinder according to claim 1 links, which is characterized in that half gear（2）It is two And model is identical, rack（3）For two pairs and model it is identical, two and half gears（2）It is symmetrically arranged in axle sleeve inner link（5）'s On extended line, two pairs of racks（3）It is respectively arranged at and is located at the surface and underface of half gear of the same side with it.
- Half gear engine 4. four cylinder according to claim 3 links, which is characterized in that the transmission shaft（4）It is divided into Two sections.
- 5. according to four cylinder of claim 1-4 any one of them, half gear engine of linkage, which is characterized in that described per toothed rack （3）Length >=half gear（2）The half of perimeter.
- Half gear engine 6. four cylinder according to claim 5 links, which is characterized in that described per toothed rack（3）Length Degree is equal to gear（2）The half of perimeter.
- Half gear engine 7. four cylinder according to claim 1 links, which is characterized in that 4 cylinder models are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488991.0A CN108757172A (en) | 2018-05-21 | 2018-05-21 | A kind of half gear engine of four cylinders linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488991.0A CN108757172A (en) | 2018-05-21 | 2018-05-21 | A kind of half gear engine of four cylinders linkage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757172A true CN108757172A (en) | 2018-11-06 |
Family
ID=64008533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810488991.0A Withdrawn CN108757172A (en) | 2018-05-21 | 2018-05-21 | A kind of half gear engine of four cylinders linkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757172A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162124A (en) * | 2020-10-10 | 2021-01-01 | 湖南中部芯谷科技有限公司 | High-speed high-precision digital-to-analog conversion chip testing equipment convenient to operate |
| CN112249705A (en) * | 2020-10-10 | 2021-01-22 | 湖南中部芯谷科技有限公司 | Transmission mechanism in production process of high-speed high-precision digital-to-analog conversion chip |
| CN113719350A (en) * | 2021-08-30 | 2021-11-30 | 黄明武 | Constant volume electric control combustion coupled meshing engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608711A1 (en) * | 1986-12-17 | 1988-06-24 | Goulet Michel | Device for converting a reciprocating linear movement into a rotational movement |
| EP0233905B1 (en) * | 1985-08-13 | 1990-01-17 | HOVETE Société Civile d'Etudes d'Innovations de Recherches et d'Applications Industrielles | Mechanism for transforming the alternating motion of a piston into a circular motion of a shaft |
| CA2080384A1 (en) * | 1992-11-27 | 1994-05-28 | Pierre Charbonneau | Carbono |
| US7201133B2 (en) * | 2003-06-20 | 2007-04-10 | 3Rd Millennium Solutions, Ltd. | Internal combustion engine having dual piston cylinders and linear drive arrangement |
| CN101858251A (en) * | 2010-05-07 | 2010-10-13 | 吴伟健 | Piston engine |
| CN204476561U (en) * | 2015-03-27 | 2015-07-15 | 董均敏 | Twin-tub straight-bar rushes formula internal-combustion engine mutually |
| CN204591478U (en) * | 2014-07-10 | 2015-08-26 | 孙书伟 | The power plant two-stroke gear shaft motor of automobile, steamer |
-
2018
- 2018-05-21 CN CN201810488991.0A patent/CN108757172A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0233905B1 (en) * | 1985-08-13 | 1990-01-17 | HOVETE Société Civile d'Etudes d'Innovations de Recherches et d'Applications Industrielles | Mechanism for transforming the alternating motion of a piston into a circular motion of a shaft |
| FR2608711A1 (en) * | 1986-12-17 | 1988-06-24 | Goulet Michel | Device for converting a reciprocating linear movement into a rotational movement |
| CA2080384A1 (en) * | 1992-11-27 | 1994-05-28 | Pierre Charbonneau | Carbono |
| US7201133B2 (en) * | 2003-06-20 | 2007-04-10 | 3Rd Millennium Solutions, Ltd. | Internal combustion engine having dual piston cylinders and linear drive arrangement |
| CN101858251A (en) * | 2010-05-07 | 2010-10-13 | 吴伟健 | Piston engine |
| CN204591478U (en) * | 2014-07-10 | 2015-08-26 | 孙书伟 | The power plant two-stroke gear shaft motor of automobile, steamer |
| CN204476561U (en) * | 2015-03-27 | 2015-07-15 | 董均敏 | Twin-tub straight-bar rushes formula internal-combustion engine mutually |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162124A (en) * | 2020-10-10 | 2021-01-01 | 湖南中部芯谷科技有限公司 | High-speed high-precision digital-to-analog conversion chip testing equipment convenient to operate |
| CN112249705A (en) * | 2020-10-10 | 2021-01-22 | 湖南中部芯谷科技有限公司 | Transmission mechanism in production process of high-speed high-precision digital-to-analog conversion chip |
| CN112162124B (en) * | 2020-10-10 | 2023-11-10 | 湖南中部芯谷科技有限公司 | High-speed high-precision digital-to-analog conversion chip test equipment convenient to operate |
| CN113719350A (en) * | 2021-08-30 | 2021-11-30 | 黄明武 | Constant volume electric control combustion coupled meshing engine |
| CN113719350B (en) * | 2021-08-30 | 2023-11-28 | 黄明武 | Constant volume electric control combustion coupling engagement engine |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |
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| WW01 | Invention patent application withdrawn after publication |