CN203531990U - Valve timing mechanism of internal combustion engine - Google Patents
Valve timing mechanism of internal combustion engine Download PDFInfo
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- CN203531990U CN203531990U CN201320652261.2U CN201320652261U CN203531990U CN 203531990 U CN203531990 U CN 203531990U CN 201320652261 U CN201320652261 U CN 201320652261U CN 203531990 U CN203531990 U CN 203531990U
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- worm
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- rotating disk
- air outlet
- circle
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Abstract
A valve timing mechanism of an internal combustion engine comprises a check nut, a tooth-shaped belt wheel, a worm, a worm gear, a worm gear shaft, a sealing bearing, a cylinder cover, a rotary table, a self-locking nut and the like. The valve timing mechanism of the internal combustion engine is characterized in that the tooth-shaped belt wheel is fixedly connected with the worm through the check nut, the worm is meshed with the worm gear, the upper end of the worm gear shaft is fixedly connected with the worm gear, the middle portion of the worm gear shaft is fixedly connected with the sealing bearing, and the lower end of the worm gear shaft is fixedly connected with the rotary table through the self-locking nut. An air inlet and an air outlet are distributed in the rotary table, and the distance from the air inlet to the center of the circle of the rotary table is larger than the distance from the air outlet to the center of the circle of the rotary table. The distance from an air inlet channel to the center line of a cylinder is equal to the distance from the air inlet to the center of the circle of the rotary table, and the distance from an air outlet channel to the center line of the cylinder is equal to the distance from the air outlet to the center of the circle of the rotary table. The valve timing mechanism of the internal combustion engine has the advantages that vibration of the valve timing mechanism of the internal combustion engine can be reduced and the energy consumption of the valve timing mechanism of the internal combustion engine can be lowered at the same time when the air inlet and air exhaust process is completed, the air inlet and air exhaust process is completed only by the worm wheel, the worm and the rotary table, and the structure is simple.
Description
Affiliated technical field
The utility model relates to a kind of distribution device of internal-combustion engine, the vibration that it is characterized in that simplifying the energy consumption of I. C engine distribution mechanism, reduction I. C engine distribution mechanism and reduce I. C engine distribution mechanism.
Background technique
At present, known I. C engine distribution mechanism adopts valve type distribution device.Valve type distribution device is comprised of valve group and valve transmission group two-part, wherein valve group part comprises valve, air valve seat ring, valve guide bushing, valve spring, cotter seat and valve collet etc., and valve transmission group part comprises camshaft, tappet, push rod, rocking arm, pitman arm shaft, rocker shaft bed and valve clearance screw etc.During internal combustion engine, bent axle rotates by timing gear drive cam shaft.When the ascent stage of cam is during jack-up tappet, through push rod and valve adjusting screw, promote pitman arm shaft and swing, compression valve spring makes valve opening.When the descending branch of cam contacts with tappet, valve is closed gradually under the effect of valve spring power, and internal-combustion engine completes breathing action.But, valve type distribution device complex structure, amount of parts is many, and cost of production is high.Because utilizing the distribution spring of high [coefficient of, valve type distribution device make valve automatically close intake duct, air outlet flue, valve spring can store a part of elastic potential energy while being compressed by rocking arm, and this part elastic potential energy cannot be converted into useful work output when spring extends, spring compresses continually to extend and consumes mass energy.Distribution spring ceaselessly compresses elongation, can make distribution device produce larger vibration.
Summary of the invention
In order to overcome existing I. C engine distribution mechanism complex structure, energy consumption is high and vibrate large deficiency, the utility model provides a kind of I. C engine distribution mechanism, this distribution device can not only complete the breathing action of internal-combustion engine, and can simplify widely distribution device, reduce distribution device energy consumption, reduce the vibration of distribution device.
The utility model solves the technological scheme that its technical problem adopts: profile of tooth belt wheel is fixedly connected with worm screw by lock nut, worm and worm wheel intermesh, worm-wheel shaft upper end is fixedly connected with worm gear, worm-wheel shaft middle part is fixedly connected with stuffing box bearing, and worm-wheel shaft lower end is fixedly connected with rotating disk by self-locking nut.During internal combustion engine, first power pass to worm screw from bent axle by profile of tooth belt wheel, then pass to worm gear by worm screw, finally by worm gear, passes to rotating disk.Select profile of tooth belt wheel and the worm and gear of suitable types, dial rotation one circle while making every rotation two circle of bent axle.Rotating disk from the distance at cylinder head top very close to, neither can make rotating disk and cylinder head directly contact the larger surface friction drag of generation, can not allow again cylinder inner high voltage gas when intake duct and air outlet flue are not opened through the clearance leakage between rotating disk and cylinder head.On rotating disk, be distributed with suction port and relief opening, suction port is greater than relief opening to the distance in the rotating disk center of circle to the distance in the rotating disk center of circle, and suction port equals intake duct to the distance of cylinder centerline to the distance in the rotating disk center of circle, relief opening equals air outlet flue to the distance of cylinder centerline to the distance in the rotating disk center of circle.In dust cycle of internal-combustion engine: 1. when exhaust stroke finishes aspirating stroke and starts, suction port forwards intake duct edge to opens intake duct, relief opening leaves air outlet flue closes air outlet flue, is also with into atomized fuel when fresh air is come in, and forms inflammable mixture; 2. when aspirating stroke finishes compression stroke and starts, suction port leaves intake duct closes intake duct, and relief opening does not also forward air outlet flue top to, and air outlet flue is closed; 3., when compression stroke finishes expansion stroke and starts, because suction port does not also forward intake duct top to, intake duct is closed, relief opening does not yet forward air outlet flue top to, air outlet flue is closed, and whole cylinder is in sealing state, and now inflammable mixture burning rapidly expansion promote piston acting; 4. when expansion stroke finishes exhaust stroke and starts, suction port does not also forward intake duct top to, and intake duct is closed, and relief opening forwards air outlet flue edge to opens air outlet flue, combustion gas.
The beneficial effects of the utility model are, can when completing breathing action, reduce the energy consumption of distribution device, reduce the vibration of distribution device, and distribution device main parts size is worm and gear and rotating disk, simple in structure.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model embodiment's plan view.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the suction port of rotating disk and the distribution map of relief opening.
Fig. 4 is exhaust stroke when finishing aspirating stroke and starting, the location diagram of suction port, relief opening, intake duct and air outlet flue.
Fig. 5 is aspirating stroke when finishing compression stroke and starting, the location diagram of suction port, relief opening, intake duct and air outlet flue.
Fig. 6 is compression stroke when finishing expansion stroke and starting, the location diagram of suction port, relief opening, intake duct and air outlet flue.
Fig. 7 is expansion stroke when finishing exhaust stroke and starting, the location diagram of suction port, relief opening, intake duct and air outlet flue.
1. lock nuts in figure, 2. profile of tooth belt wheel, 3. worm screw, 4. worm gear, 5. worm-wheel shaft, 6. stuffing box bearing, 7. cylinder head, 8. air outlet flue, 9. rotating disk, 10. self-locking nut, 11. intake ducts, 12. suction ports, 13. relief openings.
Embodiment
In embodiment illustrated in fig. 2, profile of tooth belt wheel (2) is fixedly connected with worm screw (3) by lock nut (1); Worm and worm wheel (4) intermesh; Worm-wheel shaft (5) upper end is fixedly connected with worm gear, and middle part is fixedly connected with stuffing box bearing (6), and lower end is fixedly connected with rotating disk (9) by self-locking nut (10).Rotating disk from the distance at cylinder head (7) top very close to, neither can make rotating disk directly contact with cylinder head and produce surface friction drag, can not make again cylinder inner high voltage gas through the clearance leakage between rotating disk and cylinder head.Air outlet flue (8) is less than intake duct (11) to the distance of cylinder centerline to the distance of cylinder centerline, and object is while guaranteeing exhaust stroke, to only have that air outlet flue is opened, only have intake duct to open during aspirating stroke.Rotating disk as shown in Figure 3, suction port (12) radial width equals intake duct diameter, and relief opening (13) radial width equals air outlet flue diameter; Suction port equals intake duct to the distance of cylinder centerline to the distance in the rotating disk center of circle, and relief opening equals air outlet flue to the distance of cylinder centerline to the distance in the rotating disk center of circle.In Fig. 4, exhaust stroke finishes aspirating stroke and starts, and relief opening turns over air outlet flue edge, and suction port forwards intake duct edge to, and now air outlet flue is closed, intake duct opens.In Fig. 5, aspirating stroke finishes compression stroke and starts, and relief opening turns over air outlet flue, and suction port turns over intake duct edge, and now air outlet flue and intake duct are all closed.In Fig. 6, compression stroke finishes expansion stroke and starts, and relief opening turns over air outlet flue, and suction port turns over intake duct, and now air outlet flue and intake duct are all closed.In Fig. 7, expansion stroke finishes exhaust stroke and starts, and relief opening forwards air outlet flue edge to, and suction port turns over intake duct, and now air outlet flue is opened, intake duct closes.In order to make to be consistent in position relationship when the different stroke of suction port, relief opening, intake duct and air outlet flue and Fig. 4, Fig. 5, Fig. 6 and Fig. 7, can calculate the relative dimensions of suction port and relief opening, make suction port from just forwarding intake duct edge to when just leaving intake duct edge, rotating disk turns over 90 degree; Make relief opening from just forwarding air outlet flue edge to when just leaving air outlet flue edge, rotating disk also turns over 90 degree.
Claims (3)
1. an I. C engine distribution mechanism, profile of tooth belt wheel, worm screw, worm gear, worm-wheel shaft and rotating disk are linked in sequence, and it is characterized in that: worm screw is fixedly connected with profile of tooth belt wheel, and worm-wheel shaft upper end is fixedly connected with worm gear, and worm-wheel shaft lower end is fixedly connected with rotating disk.
2. I. C engine distribution mechanism according to claim 1, is characterized in that: on rotating disk, be distributed with suction port and relief opening, suction port is greater than relief opening to the distance in the rotating disk center of circle to the distance in the rotating disk center of circle; Suction port on rotating disk is from just forwarding intake duct edge to when just leaving intake duct edge, and rotating disk turns over 90 degree; Relief opening on rotating disk is from just forwarding air outlet flue edge to when just leaving air outlet flue edge, and rotating disk also turns over 90 degree.
3. I. C engine distribution mechanism according to claim 1, is characterized in that: intake duct equals suction port to the distance in the rotating disk center of circle to the distance of cylinder centerline, and air outlet flue equals relief opening to the distance in the rotating disk center of circle to the distance of cylinder centerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652261.2U CN203531990U (en) | 2013-10-21 | 2013-10-21 | Valve timing mechanism of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652261.2U CN203531990U (en) | 2013-10-21 | 2013-10-21 | Valve timing mechanism of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531990U true CN203531990U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320652261.2U Expired - Fee Related CN203531990U (en) | 2013-10-21 | 2013-10-21 | Valve timing mechanism of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531990U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791032A (en) * | 2015-03-31 | 2015-07-22 | 陈旭军 | Three-way valve |
| CN106894858A (en) * | 2017-02-24 | 2017-06-27 | 俞彬 | Rotary gas distribution mechanism |
| CN106948892A (en) * | 2017-02-20 | 2017-07-14 | 浙江大学 | A kind of rotating folding type valve actuating mechanism |
| CN108049968A (en) * | 2017-12-08 | 2018-05-18 | 武汉理工大学 | A kind of engine valve actuating mechanism |
-
2013
- 2013-10-21 CN CN201320652261.2U patent/CN203531990U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791032A (en) * | 2015-03-31 | 2015-07-22 | 陈旭军 | Three-way valve |
| CN106948892A (en) * | 2017-02-20 | 2017-07-14 | 浙江大学 | A kind of rotating folding type valve actuating mechanism |
| CN106894858A (en) * | 2017-02-24 | 2017-06-27 | 俞彬 | Rotary gas distribution mechanism |
| CN108049968A (en) * | 2017-12-08 | 2018-05-18 | 武汉理工大学 | A kind of engine valve actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhou Hongjun Document name: Notification of Termination of Patent Right |