CN204024738U - A kind of twin cylinder engine camshaft - Google Patents
A kind of twin cylinder engine camshaft Download PDFInfo
- Publication number
- CN204024738U CN204024738U CN201420507454.3U CN201420507454U CN204024738U CN 204024738 U CN204024738 U CN 204024738U CN 201420507454 U CN201420507454 U CN 201420507454U CN 204024738 U CN204024738 U CN 204024738U
- Authority
- CN
- China
- Prior art keywords
- cam shaft
- cylinder
- axle
- axle journal
- exhaust cam
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of twin cylinder engine camshaft, comprise admission cam shaft and exhaust cam shaft; Admission cam shaft comprises the first axle and is sleeved on successively admission cam shaft the first axle journal, the first cylinder intake cam and the second cylinder intake cam on the first axle, also comprises admission cam shaft the second axle journal and admission cam shaft the 3rd axle journal; Exhaust cam shaft comprises the second axle and is sleeved on successively exhaust cam shaft the first axle journal, the first cylinder exhaust cam and the second cylinder exhaust cam on the second axle, also comprises exhaust cam shaft the second axle journal and exhaust cam shaft the 3rd axle journal; Described the first cylinder intake cam and the second cylinder intake cam are staggered 90 ° and arrange, the 90 ° of settings that are staggered of the first cylinder exhaust cam and the second cylinder exhaust cam.Camshaft of the present utility model designs for double overhead, compact structure, and transmission efficiency is high, is particularly suitable for twin cylinder engine.
Description
Technical field
The utility model relates to part of automobile engine, is specifically related to a kind of twin cylinder engine camshaft.
Background technique
The world today, energy problem is not only global large problem, is also the key factor that is conscientiously related to our common people's life.Rise of the oil price has driven the development of new-energy automobile, and Technology of Hybrid Electric Vehicle has more and more been pressed close to our life at present.Hybrid vehicle has auxiliary as motor of electric motor, so the requirement of the discharge capacity to motor and rated power and moment of torsion will reduce.Therefore, twin-tub four-stroke gasoline engine is little with discharge capacity, and volume is little, and the advantage that energy consumption is low, is particularly suitable for Hybrid Vehicle.
Camshaft is piston-engined parts, and its effect is to control the action of the opening and closing of valve.In four stroke engine, the rotating speed of cam is the half of bent axle, and rotating speed is still very high, and need to bear huge moment of torsion.Twin cylinder engine is not used widely in orthodox car, but because the sudden emergence of new-energy automobile in recent years, twin cylinder engine, with its advantageous advantage, will certainly be widely used.Twin cylinder engine camshaft is as the important spare part of twin cylinder engine distribution device, research that need to be more deep and discussion.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of twin-tub four stroke engine bent axle, compact structure, and transmission efficiency is high, is particularly suitable for twin cylinder engine.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of twin cylinder engine camshaft, comprises admission cam shaft and exhaust cam shaft; Described admission cam shaft comprises the first axle and is sleeved on successively admission cam shaft the first axle journal, the first cylinder intake cam and the second cylinder intake cam on the first axle; The first cylinder intake cam and the second cylinder intake cam are respectively made up of pair of cams, and between the pair of cams of the first cylinder intake cam, are provided with admission cam shaft the second axle journal, are provided with admission cam shaft the 3rd axle journal between the pair of cams of the second cylinder intake cam; Described exhaust cam shaft comprises the second axle and is sleeved on successively exhaust cam shaft the first axle journal, the first cylinder exhaust cam and the second cylinder exhaust cam on the second axle; The first cylinder exhaust cam and the second cylinder exhaust cam are respectively made up of pair of cams, and between the pair of cams of the first cylinder exhaust cam, are provided with exhaust cam shaft the second axle journal, are provided with exhaust cam shaft the 3rd axle journal between the pair of cams of the second cylinder exhaust cam; Described the first cylinder intake cam and the second cylinder intake cam are staggered 90 ° and arrange, the 90 ° of settings that are staggered of the first cylinder exhaust cam and the second cylinder exhaust cam.
Wherein, the pair of cams of described the first cylinder intake cam and admission cam shaft the second axle journal are integral type structure, and the pair of cams of the second cylinder intake cam and admission cam shaft the 3rd axle journal is integral type structure; The pair of cams of the first cylinder exhaust cam and exhaust cam shaft the second axle journal are integral type structure, and the pair of cams of the second cylinder exhaust cam and exhaust cam shaft the 3rd axle journal is integral type structure.
Wherein, in described the first axle and the second axle, be respectively equipped with the main oil leab that runs through place axle axial direction, offer respectively axle journal oil leab at each axle journal place of admission cam shaft and exhaust cam shaft; And the ratio of the diameter of the diameter of main oil leab and axle journal oil leab is 4:1.
Wherein, the front end of described main oil leab is provided with sprocket wheel fastening bolt holes, is provided with the steel ball that shutoff is used in the rear end of main oil leab.
Wherein, the front end of described admission cam shaft is provided with admission cam shaft timing pin, and its rear end is provided with intake cam axis signal wheel; The front end of described exhaust cam shaft is provided with exhaust cam shaft timing pin.
Wherein, between described the first cylinder intake cam and the second cylinder intake cam and the rear end of exhaust cam shaft is respectively provided with a hexagonal shaped piece, and two hexagonal shaped pieces respectively correspondence be sleeved on the first axle and the second axle.
Wherein, the diameter of the diameter of the diameter of described admission cam shaft the second axle journal, admission cam shaft the 3rd axle journal, exhaust cam shaft the second axle journal and the diameter of exhaust cam shaft the 3rd axle journal is consistent and with the ratio of the diameter of the diameter of admission cam shaft the first axle journal, exhaust cam shaft the first axle journal be 23:34:26; The ratio of the diameter of the axle center spacing of described admission cam shaft and exhaust cam shaft and admission cam shaft the first axle journal is 96:34.
The beneficial effect that adopts technique scheme to produce is:
Camshaft of the present utility model designs for double overhead, compact structure, and driving mechanism is few, and transmission efficiency is high, and the arrangement mode of this camshaft is particularly suitable for twin cylinder engine.
Intake cam axis cam, exhaust cam axis cam, and have definite phase relationship between admission cam shaft timing pin, exhaust cam shaft timing pin.Motor is accurately controlled the switching of each cylinder intake valve and exhaust valve in each stroke just by the combination of intake and exhaust cam axle, realize the good operation of motor.The utility model is after combing twin cylinder engine working principle, new cam arrangement form has been proposed in the design of camshaft, coordinate specific bent axle form, form piston mode of operation one on the other in operation process, further clear and definite this mode of operation, and coordinate the advantage of the camshaft of this mode of operation, form twin cylinder engine camshaft.
The pair of cams of the first cylinder intake cam and admission cam shaft the second axle journal are integral type structure, and the pair of cams of the second cylinder intake cam and admission cam shaft the 3rd axle journal is integral type structure; The pair of cams of the first cylinder exhaust cam and exhaust cam shaft the second axle journal are integral type structure, and the pair of cams of the second cylinder exhaust cam and exhaust cam shaft the 3rd axle journal is integral type structure.First two integral structure is assemblied on the first axle by drive fit, and latter two integral structure is assemblied on the second axle by drive fit.Than the integral type design of cam of the prior art, axle journal and axle, the utility model adopts cam and axle journal to separate design with the independence of axle, overcome because the manufacturing deficiency of a certain assembly causes the entirety of camshaft and scrapped, reduce Camshaft Production defect rate, the most important thing is, adopt the integral structure of cam and axle journal, be not only convenient to the synchronous assembling of pair of cams, and improved the assembly precision of two cams on axle.
The first cylinder intake cam and the second cylinder intake cam are staggered 90 ° and arrange, the 90 ° of settings that are staggered of the first cylinder exhaust cam and the second cylinder exhaust cam.The design of cam phase is will meet the whole operation mode starting to design, the most importantly time of ignition of motor and ignition order.For twin cylinder engine, consider that being arranged symmetrically with of equilibrium block is conducive to the transient equiliblium in crankshaft rotating process, the utility model is selected 0 ° of-180 ° of this ignition mode, corresponding crankshaft designs just requires crank throw in a symmetrical arrangement, and the forms of motion of corresponding piston is exactly design one on the other.
The rear end of admission cam shaft is provided with intake cam axis signal wheel.In cylinder head, be provided with the mounting hole of phase detector, phase detector, by detecting the position of intake cam axis signal wheel, is judged the position of a cylinder top dead center, and signal feed back is to ECU, as the signal in starting ignition moment the most at last.This mode specific pressure of sentencing cylinder by camshaft is sentenced other starting ignitions such as cylinder, and to sentence cylinder mode more accurate, and the engine start time is relatively shorter.
In described the first axle and the second axle, be respectively equipped with the main oil leab that runs through place axle axial direction, offer respectively axle journal oil leab at each axle journal place of admission cam shaft and exhaust cam shaft.In engine operation process, bent axle takes two turns, and camshaft turns around, and is also in the middle of the state in running up, therefore the lubricated of camshaft is exactly an important problem, and therefore the oil channel hole of penetration type is very beneficial for lubricating between camshaft and FE Tiler.And the ratio of the diameter of the diameter of main oil leab and axle journal oil leab is 4:1, is more conducive to the conveying of lubricant oil, to being lubricated between single FE Tiler and axle journal, and make the lubrication effect between camshaft and FE Tiler reach best.
Between the first cylinder intake cam and the second cylinder intake cam and the rear end of exhaust cam shaft is respectively provided with a hexagonal shaped piece, and two hexagonal shaped pieces respectively correspondence be sleeved on the first axle and the second axle.By means of hexagonal shaped piece, use spanner can rotate fast single camshaft, be beneficial to the assembling of motor.
The front end of admission cam shaft is provided with admission cam shaft timing pin, and the front end of exhaust cam shaft is provided with exhaust cam shaft timing pin, to facilitate determining of engine timing position.
Brief description of the drawings
Fig. 1 is plan view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the right elevation of Fig. 1;
Fig. 4 is stereogram of the present utility model;
In figure: 1, admission cam shaft timing pin, 2, sprocket wheel fastening bolt holes, 3, admission cam shaft the first axle journal, 4, the first cylinder intake cam, 5, admission cam shaft the second axle journal, 6, hexagonal shaped piece, 7, the second cylinder intake cam, 8, admission cam shaft the 3rd axle journal, 9, intake cam axis signal wheel, 10, main oil leab, 11, axle journal oil leab, 12, steel ball, 13, exhaust cam shaft timing pin, 14, sprocket wheel fastening bolt holes, 15, exhaust cam shaft the first axle journal, 16, the first cylinder exhaust cam, 17, exhaust cam shaft the second axle journal, 18, the second cylinder exhaust cam, 19, exhaust cam shaft the 3rd axle journal, 20, hexagonal shaped piece, 21, main oil leab, 22, axle journal oil leab, 23, steel ball.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figures 1 to 4, the utility model discloses a kind of twin cylinder engine camshaft, comprise admission cam shaft and exhaust cam shaft; Described admission cam shaft comprises the first axle and is sleeved on successively admission cam shaft the first axle journal 3, the first cylinder intake cam 4 and the second cylinder intake cam 7 on the first axle; The first cylinder intake cam 4 and the second cylinder intake cam 7 are respectively made up of pair of cams, and between the pair of cams of the first cylinder intake cam 4, be provided with between the pair of cams of admission cam shaft the second axle journal 5, the second cylinder intake cams 7 and be provided with admission cam shaft the 3rd axle journal 8; Described exhaust cam shaft comprises the second axle and is sleeved on successively exhaust cam shaft the first axle journal 15, the first cylinder exhaust cam 16 and the second cylinder exhaust cam 18 on the second axle; The first cylinder exhaust cam 16 and the second cylinder exhaust cam 18 are respectively made up of pair of cams, and between the pair of cams of the first cylinder exhaust cam 16, be provided with between the pair of cams of exhaust cam shaft the second axle journal 17, the second cylinder exhaust cams 18 and be provided with exhaust cam shaft the 3rd axle journal 19; The pair of cams of the first cylinder intake cam 4 of the present utility model and admission cam shaft the second axle journal 5 are integral type structure, and the pair of cams of the second cylinder intake cam 7 and admission cam shaft the 3rd axle journal 8 is integral type structure; The pair of cams of the first cylinder exhaust cam 16 and exhaust cam shaft the second axle journal 17 are integral type structure, and the pair of cams of the second cylinder exhaust cam 18 and exhaust cam shaft the 3rd axle journal 19 is integral type structure.First two integral structure is assemblied on the first axle by drive fit, and latter two integral structure is assemblied on the second axle by drive fit.
Specify the time of ignition of motor and the ignition order of motor.For twin cylinder engine, the crank angle corresponding to time of ignition of each cylinder is 0 °-180 ° and 0 °-360 ° two kinds, consider that being arranged symmetrically with of equilibrium block is conducive to balance crankshaft and rotates the vibrations that cause, the utility model is selected 0 ° of-180 ° of this ignition mode.The 90 ° of settings that are staggered of described the first cylinder intake cam 4 and the second cylinder intake cam 7, the 90 ° of settings that are staggered of the first cylinder exhaust cam 16 and the second cylinder exhaust cam 18, and the peach of the first cylinder intake cam 4 point is oppositely arranged with the peach point of the first cylinder exhaust cam 16, the peach point of the second cylinder intake cam 7 oppositely arranges with the peach point of the second cylinder exhaust cam 18, as shown in Figure 1.The definite assembly relation of admission cam shaft and exhaust cam shaft dependence timing pin and timing chain ensures phase relationship definite between two kinds.Because a cylinder has two intake valves and two exhaust valves, therefore a cylinder intake and exhaust cam of the present utility model and two cylinder intake and exhaust cam are equipped with two cams, and intake cams all on admission cam shaft is all identical, there is certain corner and lift relation, to adapt to the characteristics of motion of engine intake valve; Exhaust cams all on exhaust cam shaft is all identical, has certain corner and lift relation, to adapt to the characteristics of motion of engine exhaust port.
As shown in Figure 1, in the first axle and the second axle, be respectively equipped with the main oil leab 10,21 that runs through place axle axial direction, offer respectively axle journal oil leab 11,22 at each axle journal place of admission cam shaft and exhaust cam shaft; And the ratio of the diameter of the diameter of main oil leab 10,21 and axle journal oil leab 11,22 is 4:1.The lubrication system of the common composition camshaft of main oil leab 10,21 and axle journal oil leab 11,22, the friction when reducing High Rotation Speed.The front end of main oil leab 10,21 is provided with sprocket wheel fastening bolt holes 2,14, in order to driving sprocket wheel to be installed, is provided with the steel ball 12,23 that shutoff is used in the rear end of main oil leab 10,21.
The front end of admission cam shaft is provided with admission cam shaft timing pin 1, as shown in Figure 2, its rear end is provided with intake cam axis signal wheel 9, on intake cam axis signal wheel 9, there is hypodontia, as shown in Figure 1,3, so that when engine start, CMPS Camshaft Position Sensor can detect the position of camshaft, smooth ignition.The front end of exhaust cam shaft is provided with exhaust cam shaft timing pin 13, as shown in Figure 2.
Between the first cylinder intake cam 4 and the second cylinder intake cam 7 and rear end of exhaust cam shaft is respectively provided with a hexagonal shaped piece 6,20, and two hexagonal shaped pieces 6,20 respectively correspondence be sleeved on the first axle and the second axle, as shown in Figure 1.The clamping of hexagonal shaped piece 6,20 specific frock during for pretension camshaft sprocket, to prevent that camshaft from rotating.
The diameter of admission cam shaft the second axle journal 5 of the present utility model, the diameter of admission cam shaft the 3rd axle journal 8, the diameter of exhaust cam shaft the second axle journal 17 and the diameter of exhaust cam shaft the 3rd axle journal 19 is consistent and with the ratio of the diameter of the diameter of admission cam shaft the first axle journal 3, exhaust cam shaft the first axle journal 15 be 23:34:26; The ratio of the diameter of the axle center spacing of described admission cam shaft and exhaust cam shaft and admission cam shaft the first axle journal 3 is 96:34.In chain drive, intake and exhaust cam axle front end is wanted the moment of torsion that transmission is larger, and therefore intake and exhaust cam axle the first axle journal is compared other axle journal diameters and wanted large, with bearing load.Concrete, the axle center spacing of admission cam shaft of the present utility model and exhaust cam shaft is 96mm, to ensure in the situation of intake and exhaust cam axle mutual noninterference, the gap of camshaft sprocket ensures 2mm, and than similar products before, improve chaindriven stationarity, reduced noise, be conducive to chaindriven tensioning, improved chaindriven efficiency; The diameter of admission cam shaft the first axle journal 3 is 34mm; The diameter of admission cam shaft the second axle journal 5, the diameter of admission cam shaft the 3rd axle journal 8, the diameter of exhaust cam shaft the second axle journal 17 and the diameter of exhaust cam shaft the 3rd axle journal 19 are 23mm, and the diameter of exhaust cam shaft the first axle journal 15 is 26mm.Spacing between spacing between spacing between spacing between the pair of cams of described the first cylinder intake cam 4, the pair of cams of the second cylinder intake cam 7, the pair of cams of the first cylinder exhaust cam 16 and the pair of cams of the second cylinder exhaust cam 18 is 24mm.The diameter of main oil leab 10,21 is 8mm, and the diameter of axle journal oil leab 11,22 is 2mm.This design camshaft structure compactness, transmission efficiency is high, lubricated smooth and easy, is particularly suitable for twin cylinder engine.
Claims (7)
1. a twin cylinder engine camshaft, comprises admission cam shaft and exhaust cam shaft; It is characterized in that:
Described admission cam shaft comprises the first axle and is sleeved on successively admission cam shaft the first axle journal (3), the first cylinder intake cam (4) and the second cylinder intake cam (7) on the first axle; The first cylinder intake cam (4) and the second cylinder intake cam (7) are respectively made up of pair of cams, and between the pair of cams of the first cylinder intake cam (4), be provided with admission cam shaft the second axle journal (5), between the pair of cams of the second cylinder intake cam (7), be provided with admission cam shaft the 3rd axle journal (8);
Described exhaust cam shaft comprises the second axle and is sleeved on successively exhaust cam shaft the first axle journal (15), the first cylinder exhaust cam (16) and the second cylinder exhaust cam (18) on the second axle; The first cylinder exhaust cam (16) and the second cylinder exhaust cam (18) are respectively made up of pair of cams, and between the pair of cams of the first cylinder exhaust cam (16), be provided with exhaust cam shaft the second axle journal (17), between the pair of cams of the second cylinder exhaust cam (18), be provided with exhaust cam shaft the 3rd axle journal (19);
Described the first cylinder intake cam (4) and the second cylinder intake cam (7) are staggered 90 ° and arrange, the 90 ° of settings that are staggered of the first cylinder exhaust cam (16) and the second cylinder exhaust cam (18).
2. twin cylinder engine camshaft according to claim 1, it is characterized in that: the pair of cams of described the first cylinder intake cam (4) and admission cam shaft the second axle journal (5) are integral type structure, and the pair of cams of the second cylinder intake cam (7) and admission cam shaft the 3rd axle journal (8) are integral type structure; The pair of cams of the first cylinder exhaust cam (16) and exhaust cam shaft the second axle journal (17) are integral type structure, and the pair of cams of the second cylinder exhaust cam (18) and exhaust cam shaft the 3rd axle journal (19) are integral type structure.
3. twin cylinder engine camshaft according to claim 1, it is characterized in that: in described the first axle and the second axle, be respectively equipped with the main oil leab (10,21) that runs through place axle axial direction, offer respectively axle journal oil leab (11,22) at each axle journal place of admission cam shaft and exhaust cam shaft; And the ratio of the diameter of the diameter of main oil leab (10,21) and axle journal oil leab (11,22) is 4:1.
4. twin cylinder engine camshaft according to claim 3, it is characterized in that: the front end of described main oil leab (10,21) is provided with sprocket wheel fastening bolt holes (2,14), in the rear end of main oil leab (10,21), be provided with the steel ball (12,23) that shutoff is used.
5. twin cylinder engine camshaft according to claim 1, is characterized in that: the front end of described admission cam shaft is provided with admission cam shaft timing pin (1), and its rear end is provided with intake cam axis signal wheel (9); The front end of described exhaust cam shaft is provided with exhaust cam shaft timing pin (13).
6. twin cylinder engine camshaft according to claim 1, it is characterized in that: between described the first cylinder intake cam (4) and the second cylinder intake cam (7) and the rear end of exhaust cam shaft is respectively provided with a hexagonal shaped piece (6,20), and two hexagonal shaped pieces (6,20) respectively correspondence be sleeved on the first axle and the second axle.
7. twin cylinder engine camshaft according to claim 1, is characterized in that: the diameter of described admission cam shaft the second axle journal (5), the diameter of admission cam shaft the 3rd axle journal (8), the diameter of exhaust cam shaft the second axle journal (17) and the diameter of exhaust cam shaft the 3rd axle journal (19) is consistent and with the ratio of the diameter of the diameter of admission cam shaft the first axle journal (3), exhaust cam shaft the first axle journal (15) be 23:34:26; The ratio of the diameter of the axle center spacing of described admission cam shaft and exhaust cam shaft and admission cam shaft the first axle journal (3) is 96:34.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507454.3U CN204024738U (en) | 2014-09-04 | 2014-09-04 | A kind of twin cylinder engine camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507454.3U CN204024738U (en) | 2014-09-04 | 2014-09-04 | A kind of twin cylinder engine camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024738U true CN204024738U (en) | 2014-12-17 |
Family
ID=52064622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420507454.3U Expired - Fee Related CN204024738U (en) | 2014-09-04 | 2014-09-04 | A kind of twin cylinder engine camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024738U (en) |
-
2014
- 2014-09-04 CN CN201420507454.3U patent/CN204024738U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204082245U (en) | The electrodeless variable valve gear of a kind of motor | |
| CN102562209B (en) | Crank shaft and cam shaft transmission ratio switching mechanism of internal combustion engine | |
| CN101749122A (en) | Piston variable-compression ratio and variable-displacement engine | |
| CN204024738U (en) | A kind of twin cylinder engine camshaft | |
| CN203978608U (en) | Asynchronous twin cylinder engine | |
| CN204024739U (en) | A kind of novel twin cylinder engine camshaft | |
| CN201106620Y (en) | Internal combustion engine combined crankshaft for minitype automobile | |
| CN102734407A (en) | Hydraulic chain tensioner device | |
| CN201461111U (en) | Cylinder deactivating and oil saving device for engine | |
| CN202467956U (en) | Continuous variable valve timing controller for automobile engine | |
| CN202325947U (en) | High-pressure fuel pump driving mechanism for direct injection spark ignition engine | |
| CN204152573U (en) | A kind of novel twin cylinder engine distribution device | |
| CN204419285U (en) | A kind of VVT engine exhaust camshaft | |
| CN2921300Y (en) | Vehicle engine camshaft lubricating structure | |
| CN203335166U (en) | Variable valve lift mechanism of automobile engine air distribution system | |
| CN204552859U (en) | Arranged on top of diesel engine single camshaft drives Valve Rocker Organization | |
| CN102733874A (en) | Cam shaft with encoding disk and lubricating oil channel | |
| CN203476415U (en) | Cam shaft | |
| CN202991160U (en) | Laterally-arranged camshaft engine valve mechanism orientational roller tappet | |
| CN203962069U (en) | Synchronous twin cylinder engine | |
| CN203978610U (en) | Twin cylinder engine connecting rod | |
| CN204572100U (en) | A kind of cam shaft for diesel engine top-mounted air distribution mechanism | |
| CN204532453U (en) | engine valve variable timing and lift control system | |
| CN103758634A (en) | Double-shaft rotary engine | |
| CN201318213Y (en) | Double-rotation four-cycle piston type internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 054800 Qinghe County Road, Qinghe County, Hebei Province Patentee after: Leading vehicle Co., Ltd. Address before: 054800 Lijiang street, Qinghe County, Xingtai, Hebei 36 Patentee before: HEBEI YOGOMO MOTORS CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |