CN2913619Y - Engine self-adaptive spiracle phase apparatus - Google Patents
Engine self-adaptive spiracle phase apparatus Download PDFInfo
- Publication number
- CN2913619Y CN2913619Y CN 200620057668 CN200620057668U CN2913619Y CN 2913619 Y CN2913619 Y CN 2913619Y CN 200620057668 CN200620057668 CN 200620057668 CN 200620057668 U CN200620057668 U CN 200620057668U CN 2913619 Y CN2913619 Y CN 2913619Y
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- CN
- China
- Prior art keywords
- cam
- operating mode
- centrifugal
- self
- air valve
- 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 - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/035—Centrifugal forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses an engine self-adaptive valve timing device which comprises a valve sleeved with a valve spring, a rocking arm for driving the valve to make reciprocating motion, and a rotating cam for driving the rocking arm to swing. The cam is a multi-load cam adapted to control the valve timing and lift. A centrifugal thrust disc is sleeved at one side of the multi-load cam and provided inside with moor than two centrifugal fly-balls each of which contacts with the pyramidal or slant surface of the centrifugal thrust disc and a support seat respectively. A shift spring is arranged between the support seat and the other end of the multi-load cam. Since the multi-load cam has a continuous smooth profile, the continuously variable valve timing is realized by stepless control and the multi-load cam is suitable for various working conditions. The utility model can meet the requirement of variable conditions of engine.
Description
Technical field
The utility model relates to a kind of engine valve phase control device, relates in particular to a kind of motor air valve variation phase device, more specifically to a kind of self-adaptive air valve phaser of engine.
Background technique
The size that opens and closes constantly and open path of motor inlet and outlet door is very big to performance impact, and best valve motion timing and the area of passage are different along with the operating mode of motor.The motion timing and the valve lift of tradition valve actuating mechanism are fixed, and reach best though can guarantee the performance of motor operating mode, then can not fully take into account other operating modes, and this is obviously unfavorable concerning the frequent motor car engine of working conditions change.In view of this, people explore the changing air valve phase actuation techniques, and some implementations have been proposed, as the admission cam shaft single-phase regulating type pneumatic door control system (VTC) of German KSAT company, changeable air valve timing mechanism (VVT) of Japan Suzuki Co., Ltd. or the like.But, the changing air valve phase technology can only be carried out the adjusting variation of limited several grades of shelves usually at present, just only have top gear and bottom gear two-stage to change as pneumatic door control system above-mentioned, it is to finish by the combining form that adopts a top gear cam and a bottom gear cam.But, because the applying working condition of motor car engine is constantly to change, that is along with the variation of the rotating speed and the load of motor, the optimal valve phase place need be carried out multistage and even stepless continuous ground changes adjusting, could guarantee the performance output of motor in bigger operating mode scope like this, obviously, existing changing air valve phase technology can't satisfy these requirements.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of can farthest realize valve-control optimum under the various operating modes, so that adapt to the needs of motor variable working condition, in bigger operating range, improve the self-adaptive air valve phaser of engine of the performance of motor thus.
The technological scheme that the invention for solving the technical problem adopted is:
A kind of self-adaptive air valve phaser of engine, comprise the valve that is set with valve spring, drive the reciprocating rocking arm of valve, and the rotating cam that drives the rocking arm swing, described cam is for changing valve lift and opening and closing multi-operating mode cam constantly, the profile of multi-operating mode cam is: an end is the little load cam type surface of low speed, the other end is big at a high speed load cam type surface, it between little load cam type surface of low speed and the big at a high speed load cam type surface middling speed load cam type surface of smooth transition, one end of described multi-operating mode cam is set with the centrifugal thrust dish, be provided with plural centrifugal flyball in the centrifugal thrust dish, centrifugal flyball contacts with the conical surface of centrifugal thrust dish or inclined-plane and bracket respectively, is provided with displacement spring between the other end of multi-operating mode cam and the pedestal.
The beneficial effects of the utility model are: it is reciprocating that the utility model drives valve by the multi-operating mode cam, because the profile of multi-operating mode cam is smooth continuously, so can carry out stepless regulated as required, realized the continuous variable valve phase place, simultaneously, the profile of multi-operating mode cam has covered the various operating modes of motor, so the utility model can satisfy the variable working condition needs of motor well.In addition, the best effort section of multi-operating mode cam can be regulated voluntarily according to the rotating speed of motor and the variation of load, has therefore realized the self adaption optimal valve phase place of motor, thereby has guaranteed the better performance index of motor under various operating modes.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the multi-operating mode cam of the present utility model face schematic representation of deciding what is right and what is wrong.
Embodiment
With reference to Fig. 1, Fig. 2, a kind of self-adaptive air valve phaser of engine, comprise the valve 1 that is set with valve spring 2, drive the reciprocating rocking arm 3 of valve 1, and driving the rotating cam of rocking arm 3 around the pitman arm shaft swing, valve spring 2 makes motor valve when compression stroke and expansion space stroke be in closed condition; Described cam is for changing valve lift and opening and closing multi-operating mode cam 5 constantly, the profile of multi-operating mode cam 5 is: an end is the little load cam type surface 51 of low speed, it is corresponding with the low speed operating mode of motor that it produces preferable valve-control, the other end is big at a high speed load cam type surface 52, it is corresponding with the high-speed working condition of motor that it produces preferable valve-control, is the middling speed operating mode cam type surface 53 of transition little by little, continuously and glossily between little load cam type surface 51 of low speed and the big at a high speed load cam type surface 52.
Present embodiment can be provided with rolling element 31 in order to improve the smoothness that rocking arm 3 drives in valve 1 process between multi-operating mode cam 5 and rocking arm 3, rolling element 31 can be roller, needle roller or ball, and certainly, multi-operating mode cam 5 also can directly drive on the rocking arm 3.
The utility model is set with centrifugal thrust dish 7 at an end of multi-operating mode cam 5, be provided with plural centrifugal flyball 6 in the centrifugal thrust dish 7, centrifugal flyball 6 roof pressures are on bracket 4, during motion, centrifugal thrust dish 7 rotates with multi-operating mode cam 5, it adopts the conical surface, inclined-plane or curved surface to contact with centrifugal flyball 6, and usually the normal at the place of keeping in touch and the axis of multi-operating mode cam are the acute angle state, what deserves to be explained is, centrifugal thrust dish 7 can be formed in one with multi-operating mode cam 5, makes structure compact more like this.Centrifugal flyball 6 has several, be good wherein with two, three, four, five, six and eight, they are separated by dividing plate, barrier or directly process groove on centrifugal thrust dish 7 or protruding band is separated it, and therefore centrifugal flyball 6 is driven and produces and rotatablely move.
Present embodiment is provided with displacement spring 8 between the other end of multi-operating mode cam 5 and pedestal 9, the effect of displacement spring 8 is to produce the power along the axial direction of multi-operating mode cam 5, this power and centrifugal flyball 6 are by centrifugal thrust dish 7 derivative axial thrust balancings, and determine the active section of multi-operating mode cam 5 thus, it must be noted that, displacement spring 8 can be nested with on certain axle journal of multi-operating mode cam 5, it can be common cylindrically coiled spring, conical helical spring, also can be various dish shape springs, displacement spring 8 can rotate for one with multi-operating mode cam 5, also can not rotate.For the ease of regulating the pretension elastic force of displacement spring 8, described pedestal 9 is provided with adjustment screw 14 and is pressed on the displacement spring 8.More freely suitable in order to make in the adjustment process, can also and adjust in described displacement spring 8 and be provided with a pushing pad sheet 15 between the screw 14 and axle pushes away ball 16.
In addition, when motor is in the low speed high load working condition, such as situations such as Motor Vehicle climbings, this moment, the aperture of engine throttle was bigger, so it is an end of multi-operating mode cam 5 passes bracket 4 and contacts with the swing arm of being controlled by the throttle of motor 10, is provided with Returnning spring 11 between swing arm 10 and the bracket 4, more freely suitable in order to make in the adjustment process, one end of described multi-operating mode cam 5 contacts with swing arm 10 by push rod 12, is provided with thrust ball 13 between described multi-operating mode cam 5 and the push rod 12.It is pointed out that swing arm 13 also can make eccentric structure.
Present embodiment is not limited to above-mentioned structural type; can also adopt other common mechanical structure to substitute; no matter thereby use which kind of mode, reach technique effect of the present utility model with essentially identical means in a word, all should belong to protection domain of the present utility model.
The working principle of the foregoing description is: when motor is worked under some rotating speeds, multi-operating mode cam 5 rotates under the driving of timing gear or timing sprocket, and driving centrifugal thrust dish 7 rotates together, under the drive of centrifugal thrust dish 7, centrifugal flyball 6 rotates thereupon and produces the centrifugal force that outwards gets rid of, this centrifugal action is to centrifugal thrust dish 7 and derive an end thrust, it orders about 5 generations of multi-operating mode cam and moves axially, and further thus compression displacement spring 8, along with the enhancing gradually of rebounding force, multi-operating mode cam 5 finally is equilibrated at and the corresponding optimal valve phase place of engine speed active section; When engine speed changed, the end thrust that centrifugal flyball 6 produces and the rebounding force of displacement spring 8 regained balance, and make multi-operating mode cam 5 be in new working position, and the optimal valve phase place that this position produces is corresponding with the rotating speed of motor.
In addition, when motor is in the low speed high load working condition, such as situations such as Motor Vehicle climbings, this moment, the aperture of engine throttle was bigger, affect swing arm down 13 to produce the enough big amplitude of oscillation at it, push rod 12 drives multi-operating mode cam 5 by thrust ball 13 and moves to speed end, so that obtain bigger valve lift, guarantees that air inlet is fully so that the bigger moment of torsion of motor output; It is pointed out that in the little load condition of motor district, because the amplitude of oscillation of swing arm 13 is little, main at this moment active section by leading multi-operating mode cams 5 such as centrifugal flyball 6, centrifugal thrust dish 7 and displacement spring 8.
Because the profile of multi-operating mode cam 5 is smooth continuously, it can carry out stepless regulated according to the needs of motor, realized the continuous variable valve phase place, simultaneously, the profile of multi-operating mode cam 5 has covered the various operating modes of motor, so the device in the present embodiment can satisfy the variable working condition needs of motor well.In addition, the best effort section of multi-operating mode cam 5 can be regulated voluntarily according to the rotating speed of motor and the variation of load, has therefore realized the self adaption optimal valve phase place of motor, thereby has guaranteed the better performance index of motor under various operating modes.
Claims (8)
1. self-adaptive air valve phaser of engine, comprise the valve (1) that is set with valve spring (2), drive the reciprocating rocking arm (3) of valve (1), and the rotating cam that drives rocking arm (3) swing, it is characterized in that: described cam is for changing valve lift and opening and closing multi-operating mode cam (5) constantly, the profile of multi-operating mode cam (5) is: an end is the little load cam type surface of low speed (51), the other end is big at a high speed load cam type surface (52), little load cam type surface of low speed (51) and big at a high speed the load between the cam type surface (52) are the middling speed load cam type surfaces (53) of smooth transition, one end of described multi-operating mode cam (5) is set with centrifugal thrust dish (7), be provided with plural centrifugal flyball (6) in the centrifugal thrust dish (7), centrifugal flyball (6) contacts with the conical surface of centrifugal thrust dish (7) or inclined-plane and bracket (4) respectively, is provided with displacement spring (8) between the other end of multi-operating mode cam (5) and the pedestal (9).
2. a kind of self-adaptive air valve phaser of engine according to claim 1, it is characterized in that: an end of described multi-operating mode cam (5) passes bracket (4) and contacts with the swing arm of being controlled by the throttle of motor (10), is provided with Returnning spring (11) between swing arm (10) and the bracket (4).
3. a kind of self-adaptive air valve phaser of engine according to claim 2, it is characterized in that: an end of described multi-operating mode cam (5) contacts with swing arm (10) by push rod (12), is provided with thrust ball (13) between described multi-operating mode cam (5) and the push rod (12).
4. a kind of self-adaptive air valve phaser of engine according to claim 1 is characterized in that: described pedestal (9) is provided with adjustment screw (14) and is pressed on the displacement spring (8).
5. a kind of self-adaptive air valve phaser of engine according to claim 4 is characterized in that: described displacement spring (8) and adjust and also to be provided with a pushing pad sheet (15) between the screw (14) and axle pushes away ball (16).
6. a kind of self-adaptive air valve phaser of engine according to claim 1 is characterized in that: described multi-operating mode cam (5) is formed in one with centrifugal thrust dish (7).
7. a kind of self-adaptive air valve phaser of engine according to claim 1 is characterized in that: be provided with rolling element (31) between described multi-operating mode cam (5) and the rocking arm (3).
8. a kind of self-adaptive air valve phaser of engine according to claim 1 is characterized in that: be provided with the groove that centrifugal flyball (6) is installed in the described centrifugal thrust dish (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620057668 CN2913619Y (en) | 2006-04-14 | 2006-04-14 | Engine self-adaptive spiracle phase apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620057668 CN2913619Y (en) | 2006-04-14 | 2006-04-14 | Engine self-adaptive spiracle phase apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913619Y true CN2913619Y (en) | 2007-06-20 |
Family
ID=38168218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620057668 Expired - Lifetime CN2913619Y (en) | 2006-04-14 | 2006-04-14 | Engine self-adaptive spiracle phase apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913619Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410502C (en) * | 2006-04-14 | 2008-08-13 | 江门市硕普科技开发有限公司 | Self-adaptive air valve phaser of engine |
| CN103352736A (en) * | 2013-07-11 | 2013-10-16 | 浙江大学 | Continuous variable valve lift mechanism |
| CN104696039A (en) * | 2015-03-11 | 2015-06-10 | 重庆交通大学 | Pressure reduction starting distribution device of engine |
| CN106285825A (en) * | 2016-11-12 | 2017-01-04 | 淮南市福地环保科技有限公司 | A kind of stepless variable valve lift device |
| CN113550806A (en) * | 2021-08-10 | 2021-10-26 | 洛阳北方易初摩托车有限公司 | Variable valve actuating mechanism for motorcycle engine with double overhead camshafts |
-
2006
- 2006-04-14 CN CN 200620057668 patent/CN2913619Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410502C (en) * | 2006-04-14 | 2008-08-13 | 江门市硕普科技开发有限公司 | Self-adaptive air valve phaser of engine |
| CN103352736A (en) * | 2013-07-11 | 2013-10-16 | 浙江大学 | Continuous variable valve lift mechanism |
| CN104696039A (en) * | 2015-03-11 | 2015-06-10 | 重庆交通大学 | Pressure reduction starting distribution device of engine |
| CN104696039B (en) * | 2015-03-11 | 2017-08-01 | 重庆交通大学 | Engine decompression starting formula air distributing device |
| CN106285825A (en) * | 2016-11-12 | 2017-01-04 | 淮南市福地环保科技有限公司 | A kind of stepless variable valve lift device |
| CN113550806A (en) * | 2021-08-10 | 2021-10-26 | 洛阳北方易初摩托车有限公司 | Variable valve actuating mechanism for motorcycle engine with double overhead camshafts |
| CN113550806B (en) * | 2021-08-10 | 2022-08-02 | 洛阳北方易初摩托车有限公司 | Variable valve actuating mechanism for motorcycle engine with double overhead camshafts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080813 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |