CN206555023U - A kind of built-in rotary actuator formula Ratios piston - Google Patents
A kind of built-in rotary actuator formula Ratios piston Download PDFInfo
- Publication number
- CN206555023U CN206555023U CN201720255405.9U CN201720255405U CN206555023U CN 206555023 U CN206555023 U CN 206555023U CN 201720255405 U CN201720255405 U CN 201720255405U CN 206555023 U CN206555023 U CN 206555023U
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- China
- Prior art keywords
- piston
- pin
- sliding
- vane motor
- main body
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Abstract
The utility model discloses a kind of built-in rotary actuator formula Ratios piston, to overcome manufacturing cost height, poor reliability that prior art is present, it is complicated the problem of.The utility model is made up of piston main body, piston skirt, piston pin, connecting rod, snap ring, sliding-vane motor, seal cover board, spiral runner；Sliding-vane motor is placed on the centre mount of piston skirt, sliding-vane motor is connected with spiral runner with spline, the internal thread of piston main body coordinates with the external screw thread of spiral runner, the pin-and-hole of piston main body and the pin-and-hole diameter parallel of piston skirt, connecting rod is placed on piston cavity, in the pin-and-hole that piston pin is inserted to wrist-pin end of connecting rod, piston skirt and piston main body.Hydraulic oil enters in oil pocket after flowing through connecting rod, piston pin, the oil circuit of piston skirt composition, oil pocket internal pressure pushes dynamic sliding-vane motor and drives spiral runner, and spiral runner causes piston main body to occur relative displacement to change the compression ratio of engine with piston skirt in the presence of screw thread cooperation.
Description
Technical field
The utility model, on a kind of internal combustion engine, is a kind of built-in rotary actuator formula transformation more precisely
Piston is compared in contracting.
Background technology
Compression ratio determines that gasoline engine compresses the pressure of gaseous mixture, and the combustion characteristics of gasoline result in the mixed of petrol engine
Can not be too high with atmospheric pressure.If the pressure in cylinder has exceeded critical value, gasoline will because of compression before ignition by
Light, this phenomenon is referred to as detonation, and produces pinking, and very big injury can be brought to engine.For present extensive use
Engine with supercharger, when turbocharging intervention after, the temperature and pressure of combustion chamber can be raised significantly, if this value mistake
Height, pinking is just inevitable.This can produce huge injury to engine, while can also influence power output.So, fixed compression
The turbocharging of ratio and mechanically-sapercharged engine can only be designed to compression ratio more lower than common naturally aspirated engine.But
This too low compression ratio design, can cause again engine when booster (particularly turbocharging) is not completely intervened (
That is, engine is in the slow-speed of revolution), efficiency of combustion is very low, and the power that can be produced is than common naturally aspirated engine institute
The power of generation is much less.This contradiction is the major reason for promoting designer to develop variable compression ratio engine.
In addition, this technology can allow engine to possess big advantage in terms of fuel oil adaptability.Now trendy master
The compression ratio common design of engine is flowed 10:More than 1, to obtain more preferable power output and fuel economy.But high pressure
The engine of contracting ratio needs to use the fuel oil compared with high grade, and this requirement can reduce adaptability of the automobile in remote sites, influence
To the sale of vehicle.
Can using changeable compression ratio technique：
1. improve its dynamic property by improving the thermal efficiency of engine.
2. reduce the probability that pinking is produced.
3. it is easy to Engine Downsizing design.
4. engine combustion fully, reduces CO2Discharge.
The content of the invention
The utility model for solve prior art exist manufacturing cost height, poor reliability, baroque technical problem,
There is provided a kind of built-in rotary actuator formula Ratios piston.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：
A kind of built-in rotary actuator formula Ratios piston, it is characterised in that sliding-vane motor is placed on piston skirt
Centre mount in, seal cover board covers centre mount upper surface, and is bolted；Spline connects sliding-vane motor and turned with spiral
Wheel, the base of spiral runner is in the bottom of piston skirt annular groove, snap ring is placed in the annular groove of piston skirt, spiral shell
Rotating wheel is limited on the direction rotated around piston axis；Piston main body is enclosed on piston skirt, the axis of piston main body pin-and-hole
With the diameter parallel of piston skirt pin-and-hole, and piston main body and spiral runner is caused to carry out threaded engagement；Connecting rod is placed on work
In the cavity for filling in skirt section bottom, and piston pin is inserted in wrist-pin end of connecting rod, piston main body and the pin-and-hole of piston skirt.
The pin-and-hole of described piston main body is processed into track type oval structure.
The upper surface of described sliding-vane motor have a circle cross section be rectangle seal groove, sliding-vane motor lower surface it is inside and outside
Respectively there is the seal groove that a circle cross section is rectangle at the outside of oil groove and boss.
Described four oil grooves of piston pin are each side provided with a circle seal groove.
Packing material is polytetrafluoroethylene (PTFE) O-ring in the seal groove of described sliding-vane motor and the seal groove of piston pin.
The side of described sliding-vane motor is that gap coordinates with piston skirt centre mount inwall, the upper and lower end face of sliding-vane motor
It is also that gap coordinates with centre mount bottom surface and seal cover board, sliding-vane motor can freely be rotated in the oil pocket of centre mount.
The beneficial effects of the utility model are compared with prior art：
1. a kind of built-in rotary actuator formula Ratios piston described in the utility model utilizes rotary actuator
As power source, there is the characteristics of torque is big, rotational angle is small, can guarantee that the power output of device is powerful.
2. a kind of built-in rotary actuator formula Ratios piston oil circuit described in the utility model be drilled in internal piston,
Piston pin, connecting rod, avoid to change elsewhere on bent axle.
3. a kind of built-in rotary actuator formula Ratios piston described in the utility model is because retaining original piston
It is modified with combustion chamber, only to internal piston, good economy performance.
4. a kind of built-in rotary actuator formula Ratios piston described in the utility model is caused by spiral runner
Piston main body is relative to piston skirt relative motion, due to the self-locking action of spiral runner so that cylinder pressure can not be conveyed to
On sliding-vane motor, so that ensure that motor blade runs well, reliable operation.
Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings：
Fig. 1 is a kind of main sectional view of built-in rotary actuator formula Ratios piston described in the utility model.
Fig. 2 is a kind of left view of built-in rotary actuator formula Ratios piston described in the utility model.
Fig. 3 is the top view of the utility model piston skirt.
Fig. 4 is the main sectional view of the utility model motor blade.
Fig. 5 is the D-D projection views of the main sectional view of the utility model motor blade.
Fig. 6 is the E-E projection views of the main sectional view of the utility model motor blade.
Fig. 7 is the front view of the utility model piston pin.
Fig. 8 is the C-C projection views of the utility model piston pin front view.
Fig. 9 is the front view of the utility model connecting rod.
Figure 10 is the A-A projection views of the utility model connecting rod front view.
Figure 11 is the B-B projection views of the utility model connecting rod front view.
In figure：1. piston main body, 2. spiral runners, 3. seal cover boards, 4. snap rings, 5. piston skirts, 6. splines, 7. blades
Motor, 8. connecting rods, 9. piston pins.
Embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
As shown in figure 1, sliding-vane motor 7 is placed on the centre mount of piston skirt 5, oil groove and piston on sliding-vane motor 7
The centre mount oil groove mouthful in skirt section is just right, and is fixed seal cover board 3 and the centre mount of piston skirt 5 by bolt；Sliding-vane motor 7
Inwall of the end face with side and centre mount, the cooperation of the lower surface gap of seal cover board 3, sliding-vane motor 7 can rotate in centre mount；
The top of spline 6 connection spiral runner 2, bottom connection sliding-vane motor 7, the base of spiral runner 2 is in the annular groove of piston skirt 5
Lower section, in the annular groove that snap ring 4 is placed on to piston skirt 5, spiral runner 2 is limited in the direction rotated around piston axis
On；Piston main body 1 is connected through a screw thread mode with spiral runner 2, and causes the pin-and-hole of piston main body 1 and the pin bore axis of piston skirt 5
Line is parallel, in the inner chamber that the small end of connecting rod 8 is placed on to the lower section of piston skirt 5, by piston pin 9 by the small end of connecting rod 8, piston main body
1 pin-and-hole, the pin-and-hole of piston skirt 5 link together.
As shown in Figure 1, Figure 2 with shown in Fig. 3, former machine piston is divided into inside and outside two parts, outside is piston main body 1, and inside is lives
Fill in skirt section 5.The upper inside wall of piston main body 1 is that tooth form is trapezoidal inside spin structure, and inner wall lower polishes smooth inwall, inwall
There is the pin-and-hole on the obvious step of separation, piston main body 1 to be processed into runway oval structure between top and the bottom；Piston skirt 5 it is upper
Portion's intermediate projections are centre mounts, and centre mount profile is open cylinder, and centre mount inwall is uniformly distributed three sector knots
A circle screwed hole is uniform-distribution with the fixed stator of structure, centre mount open end, centre mount bottom surface is along perpendicular to piston axis
The left and right sides in direction is drilled with half-turn oil groove respectively, and oil duct is pierced from the centre position of two oil grooves, is bored from the pin-and-hole of piston skirt 5
It is the annular groove for being cross section for rectangle on the outside of oil road, centre mount on the inside of the bulge-structure of a circle thin wall shape, thin-walled.
Such as Fig. 1, spiral runner 2 is columnar structured, and the lateral surface of spiral runner 2 is trapezoidal thread, and bottom is circular base
Seat, the centre of spiral runner 2 is one piece of supporting steel plate, and supporting steel plate center is drilled with splined hole.
As shown in Figure 4, Figure 5 and Figure 6, sliding-vane motor 7 is that the side of cylinder is evenly distributed with the knot of three sectors
Structure, the upper surface of sliding-vane motor 7 is drilled with splined hole, and has the seal groove of a circle square-section, lower surface connecting cylinder boss, boss
Side also have the seal groove of a circle square-section, lower surface is drilled with inside and outside two circles oil grooves, and outer ring oil groove is shallow, inner ring oil groove deep,
The top of interior outer oil sump gets out three oil ducts laterally along axis of runner blade respectively, wherein in inner ring oil groove three oil ducts vertically with
Axis of runner blade gets out blade, and three oil ducts of outer ring oil groove vertically get out blade in reverse direction with axis of runner blade, in sliding-vane motor 7
Lower surface in outer oil sump opening each own circle square-section in outside seal groove.
As shown in Fig. 1, Fig. 7 and Fig. 8, the piston pin 9 of former machine is reprocessed, the oil duct arrangement in piston pin 9 is left
Right symmetrical structure, piston pin 9 with the pin-and-hole of piston skirt 5 on the left of the contact position of oil duct junction have a circle square-section oil groove, it is living
Plug pin 9 with the small end of connecting rod 8 on the left of the contact position of oil duct junction have a circle square-section oil groove, in this two circle oil groove bottom along hanging down
Directly four short oil roads are inwardly each drilled with the axis direction of piston pin 9, and pass through four long oil ducts parallel to the axis of piston pin 9
This eight short oil roads are connected.
As shown in Fig. 9, Figure 10 and Figure 11, the connecting rod 8 of former machine is reprocessed, in the shaft of connecting rod 8 or so diagonal
Place, is held as entrance greatly with connecting rod 8, and the small end of connecting rod 8 is outlet, is respectively drilled with an oil duct.
The bent axle of former machine is reprocessed, two oil ducts are crept into from the shaft end of bent axle, and oil duct is got out along crankshaft journal,
The oil duct junction position of crankshaft journal and the position of connecting rod tip oil duct junction are just right.
As shown in Figure 1, Figure 2, Figure 3 shows, when engine needs big compression ratio, hydraulic oil is passed through bent axle by hydraulic oil pump
The left side oil duct of connecting rod 8 is imported, the left side of piston pin 9 four oil ducts, the left side oil ducts of piston main body 1 is sequentially passed through and enters sliding-vane motor
In 7 outside oil groove, then enter the centre mount of piston skirt 5 and sliding-vane motor 7 by three oil ducts being connected with outside oil groove
In three oil pockets constituted, with the increase of hydraulic fluid pressure, oil pocket, which is pressurized, promotes sliding-vane motor 7 to rotate, and spline 6 is by blade horse
Power up to 7 passes to spiral runner 2 so that the also concomitant rotation of spiral runner 2, the external screw thread of spiral runner 2 and piston main body 1
Internal thread carries out threaded engagement so that piston main body 1 is separated under the guide effect of piston pin 9 relative to piston skirt 5, now
The compression ratio increase of engine.
As shown in Figure 1, Figure 2 with shown in Fig. 3, when engine needs low compression ratio, similarly hydraulic oil is directed to connecting rod 8
Right side oil duct, sequentially pass through the right side oil duct of piston pin 9, the right side oil duct of piston main body 1 enter sliding-vane motor 7 inner side oil groove,
Then entered by three oil ducts being connected with inner side oil duct in three offside oil pockets that centre mount is constituted with sliding-vane motor 7, oil
After cavity pressure increase, promote sliding-vane motor 7 opposite direction to rotate, the also concomitant rotation of spiral runner 2, spiral runner 2 by with piston
The threaded engagement of main body 1 so that piston main body 1 closes up under the guide effect of piston pin 9 relative to piston skirt 5, now sends out
The compression ratio reduction of motivation.
As shown in Figure 1, Figure 2 with shown in Fig. 3, after engine completes change to compression ratio, hydraulic oil pump is stopped, this
When piston skirt 5 the oil pocket pressure remained constant that constitutes of centre mount and sliding-vane motor 7, the cylinder pressure that vigorous combustion is produced makees
Used in the top of piston main body 1, due to the self-locking performance of the inside spin of piston main body 1 so that combustion pressure will not promote piston master by force
The opposing pistons skirt section 5 of body 1 is moved, and now the compression ratio of engine keeps steady state.
Claims (6)
1. a kind of built-in rotary actuator formula Ratios piston, it is characterised in that described built-in rotary actuator formula
Ratios piston includes piston main body (1), spiral runner (2), seal cover board (3), snap ring (4), piston skirt (5), spline
(6), sliding-vane motor (7), connecting rod (8), piston pin (9)；
Sliding-vane motor (7) is placed in the centre mount of piston skirt (5), and seal cover board (3) is centrally disposed a upper end surface, and
It is bolted；The top and the bottom of spline (6) connect spiral runner (2) and sliding-vane motor (7), the bottom of spiral runner (2) respectively
Seat is in the annular groove bottom of piston skirt (5), snap ring (4) is placed in the annular groove of piston skirt (5), spiral runner
(2) it is limited on the direction rotated around piston axis；Piston main body (1) is enclosed on piston skirt (5), piston main body (1) and spiral shell
Rotating wheel (2) carries out screw thread cooperation, and causes the axis of piston main body (1) pin-and-hole and the diameter parallel of piston skirt (5) pin-and-hole；
Connecting rod (8) is placed in the cavity below piston skirt (5), and piston pin (9) is inserted into connecting rod (8) small end, piston main body
(1) and in the pin-and-hole of piston skirt (5).
2. according to a kind of built-in rotary actuator formula Ratios piston described in claim 1, it is characterised by, described work
The pin-and-hole of plug main body (1) is processed into track type oval structure.
3. according to a kind of built-in rotary actuator formula Ratios piston described in claim 1, it is characterised in that described
There is the sealing that a ring cross-section is rectangle the rotor design for the trilobal formula that sliding-vane motor is used, the upper surface of sliding-vane motor (7)
Respectively there is the seal groove that a ring cross-section is rectangle at groove, the outside of the interior outer oil sump of sliding-vane motor lower surface and boss side surfaces.
4. according to a kind of built-in rotary actuator formula Ratios piston described in claim 1, it is characterised in that described
(9) four oil grooves of piston pin be each side provided with a ring cross-section be rectangle seal groove.
5. according to a kind of built-in rotary actuator formula Ratios piston described in claim 1, it is characterised in that described
The seal groove of sliding-vane motor (7) is polytetrafluoroethylene (PTFE) O-ring with packing material in the seal groove of piston pin (9).
6. according to a kind of built-in rotary actuator formula Ratios piston described in claim 1, it is characterised in that described
The side of sliding-vane motor (7) is that gap coordinates with piston skirt (5) centre mount inwall, and the upper and lower end face of sliding-vane motor (7) is with
Heart seat bottom surface and seal cover board (3) are also that gap coordinates, and sliding-vane motor (7) can be rotated in the oil pocket of centre mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720255405.9U CN206555023U (en) | 2017-03-16 | 2017-03-16 | A kind of built-in rotary actuator formula Ratios piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720255405.9U CN206555023U (en) | 2017-03-16 | 2017-03-16 | A kind of built-in rotary actuator formula Ratios piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206555023U true CN206555023U (en) | 2017-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720255405.9U Withdrawn - After Issue CN206555023U (en) | 2017-03-16 | 2017-03-16 | A kind of built-in rotary actuator formula Ratios piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206555023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762197A (en) * | 2017-03-16 | 2017-05-31 | 吉林大学 | A kind of built-in rotary actuator formula Ratios piston |
-
2017
- 2017-03-16 CN CN201720255405.9U patent/CN206555023U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762197A (en) * | 2017-03-16 | 2017-05-31 | 吉林大学 | A kind of built-in rotary actuator formula Ratios piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171013 Effective date of abandoning: 20230324 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171013 Effective date of abandoning: 20230324 |