CN1223331A - Device for regulating relative position between one axle and driving wheel - Google Patents
Device for regulating relative position between one axle and driving wheel Download PDFInfo
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- CN1223331A CN1223331A CN 98126978 CN98126978A CN1223331A CN 1223331 A CN1223331 A CN 1223331A CN 98126978 CN98126978 CN 98126978 CN 98126978 A CN98126978 A CN 98126978A CN 1223331 A CN1223331 A CN 1223331A
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- pressure medium
- pressure chamber
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- 230000001105 regulatory effect Effects 0.000 title abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 5
- 230000003993 interaction Effects 0.000 abstract 1
- 230000007363 regulatory process Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 9
- 210000003781 tooth socket Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 4
- 244000287680 Garcinia dulcis Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
A device of the present invention for regulating the change of relative rotation position between one axle and driving wheel has a regulating device with two pressure chambers interaction with each other, the pressure chambers are loaded by pressure medium pump. In order to obtain a disciplinary and regulated regulating process and a reliable position fixation, each pressure chamber is continuously applied pressure. So the pressure chamber is always connected with the pressure medium pump through a control circuit. In order to control the change of the rotation position, a bypass led to a control valve is set on each control circuit; each pressure chamber can obtain corresponding pressure compensation by the pressure chamber.
Description
The present invention relates to one of the described a kind of adjusting of independent claims, especially the device of the relatively rotation place of the relative driving wheel of camshaft of internal-combustion engine variation.
A kind of such controlling device for example is disclosed among the WO95/31633.The rotational position that the document has been described a kind of camshaft to an internal-combustion engine changes the device of regulating, at this moment, the dress wheel is fixedlyed connected in this camshaft and, and dress wheel is provided with and radially changes wall in this, and the chamber arranged side by side of a tooth socket wheel is divided into two interactional pressure chambers again.This tooth socket wheel is by chain-driven or the belt transmission crank-driven by an internal-combustion engine.Thereby can obtain the on-load pressure of this current pressure chamber by the control valve that is made of three position four-way directional control valve, by this control valve, each pressure chamber changes according to the rotational position of hope and is connected with a pressure medium pump or a pressure medium case.Therefore, a pressure line is drawn in the pressure chamber that links all same functions from this control valve.Therefore in each of this pressure line a safety check that can utilize hydraulic pressure to disconnect is set all, the blocking action of each safety check can be offseted by the pressure in another pressure line.By this safety check,, when ignoring leakage loss, can realize hydraulic clamp that can counterrotating two parts at the neutral position of this control valve.A kind of such device is quite expensive.During this external adjustment process, the connection of almost not having throttling of the unfavorable positional deviation that it can produce according to a pressure chamber group relative pressure medium box and the adjustment process of inaccurate or fluctuation realizes.
Therefore, task of the present invention is that this controlling device that the relatively rotation place of regulating a relative driving wheel changes is carried out following improvement, so that this controlling device is simple in structure, cost is low and may obtain a vibrationless rotational position variation.Thereby, needn't adopt expensive control valve according to the purposes difference.
This task will realize by the invention of feature described in the characteristic that has independent claims.By the lasting on-load pressure of relativity in the pressure chamber, in all working position and during adjustment process, can reach an effective hydraulic clamp or compress, change the vibration stack that produces so that can further eliminate rotational position.Therefore this adjustment process can be by one of pressure chamber or pressure chamber's group and being guaranteed may command or adjustable connection the between the pressure medium case.Corresponding adjusting by control valve can guarantee: during whole adjustment process, kept the enough back-pressures to the rotation of shaker arm.By adopting two control valves can make such controlling device simple in structure and cost is low, this moment, this two control valve helped cost usually as one (pro rata) three position four-way directional control valve the time.
Can utilize the secure fixation suitable and relatively rotation place that simple mode will be regulated in the neutral position of two control valves, in each control wiring or pressure line, be provided with one this moment towards the safety check of regulating line clear.Thereby the backflow of the pressure medium that flows out from the pressure chamber can effectively be stoped at the neutral position of this two control valve.
Particularly when the pressure chamber provide pressure always to obtain by the throttle element that in control wiring, is provided with the time, by means of depending on that revolution obtains in the internal-combustion engine of pressure dress and inserts a kind of such device and can avoid vibration or uneven rotational position to change.Can realize by this throttle element: the high-frequency pressure variation in the control wiring can not be transferred to the pressure chamber or only with the pressure chamber that is transferred to of atomic decimal magnitude.Therefore, can utilize bypass connected by this throttle element and open the acceleration that stops or postpone pump towards the pressure medium case, though and continue to be connected with pressure medium pump, but still can obtain effective decompression.This throttle element is arranged between pressure medium pump and bypass connect, and carries out throttling so have only to flowing to the mobile of pressure chamber, and connects backflow towards the pressure medium case not by throttling from the pressure chamber by bypass.Utilize this can not obtained a kind of very fast adjusting and adjustment according to particularly advantageous mode by the backflow of throttling.
When this two control valve constitutes as circulating valve, particularly during the pulse width modulation valve, the change in location of these two component that can rotate mutually can realize according to simple and favourable especially mode.
Further advantage of the present invention and optimizing structure is provided by dependent claims and specification.
In following specification and accompanying drawing, embodiments of the invention are elaborated.Wherein:
Fig. 1 is a view of seeing from a side that deviates from camshaft;
Fig. 2 is a sectional view of cutting and have the pressure oil supplier that schematically shows along II among Fig. 1-II line open.
In the accompanying drawings, label 1 is represented the camshaft of an internal-combustion engine, fixedly installs the interior dress part 2 of a controlling device 3 at the free end of this camshaft.In this embodiment, adorn the commentaries on classics wall 4a-4d that part 2 is provided with four radial arrangement in this.Should be surrounded by a tooth socket wheel 5 by interior dress part, this tooth socket wheel is connected with I. C. engine crankshaft by the mode that is not shown specifically, and next as driving wheel.This tooth socket wheel 5 is provided with four radially commentaries on classics wall 6a-6d that inwardly protrude out, and changes at these to constitute four chambers between wall, and these chambers are subdivided into two groups of 7a-7d of pressure chamber and 8a-8d by the commentaries on classics wall that is arranged at the interior dress part in each.These pressure chambers so constitute, and are identical in two summations of regulating direction hydraulic pressure useful area.The radial hole 9a-9d of the 7a-7d of pressure chamber by in interior dress part is communicated with annular groove 10 in the camshaft 1.The radial hole 11a-11d of the 8a-8d of pressure chamber by in interior dress part is communicated with one second annular groove 12 in the camshaft in a similar fashion.These two annular grooves 10 and 12 each all be communicated with a pressure channel 13 or 14 that in camshaft, extends.These pressure channels 13 are connected with a control wiring 16 or 17 respectively by camshaft bearing 15 in known manner with 14.
These two control wirings 16 are connected with the pressure connection tube 18 of a pressure medium pump 19 with 17, and this pressure medium pump for example can be the oil pump of internal-combustion engine.All be provided with a safety check 20,21 in each in two control wirings 16 and 17, this safety check is open-minded towards this controlling device 3 in the direction of pressure medium pump 19.Also be connected with a throttle element 22 or 23 in the control wiring 16 or 17 at this moment side by side.In the downstream of throttle element 22 or 23 this two control wiring 16 or 17 each be connected with a bypass line 24 or 25, this bypass line is guided a control valve 26 or 27 respectively into.In this embodiment, this two control valve 26 and 27 is made of circuit bi-bit bi-pass selector valve, pulse width modulation 2/2 selector valve.In the commutation position I of this two control valve 26 and 27, this bypass line arranged side by side 24 and each end of 25 all seal, but in the commutation position II, and this bypass line 24 arranged side by side is connected with a pressure medium case with each end of 25.
In the neutral position I of this two control valve 26 and 27, all 7a-7d of pressure chamber of this controlling device 3 and 8a-8d are by pressure-loaded.Because this controlling device is compressed by hydraulic pressure because of onesize hydraulic pressure area, therefore can not cause that rotational position changes.For the rotational position of regulating this controlling device changes, can regulate according to the motion of hope, make one of this two control valve 26 or 27 redirect to its commutation position II.These pressure chambers that are connected with this switch valve utilize bypass line 24 or 25 to 28 unloadings of pressure medium case.Owing to utilize the effect of the pressure reduction of the pressure chamber that full pump pressure loads relatively, in this dress part will and relative tooth socket wheel 5 rotations of column direction.The control of the control valve by producing pulse or pulse width modulation may realize that all adjustable motion in a kind of rotating speed and position regulates by pressure compensation clocklike.
Claims (6)
1, regulate one (1), especially the device that changes of the relatively rotation place of the relative driving wheel of the camshaft of an internal-combustion engine (5), it has one and has two interactional (7a-7d of pressure chamber, (3) pressure medium pump of controlling device (19) 8a-8d), a pressure medium case (28) and at least one control valve, it is characterized in that: each (7a-7d of pressure chamber, 8a-8d) all pass through a control wiring (16,17) be connected with this pressure medium pump (19), one control valve (26 is set in each control wiring, 27), utilize this control valve to lead on one side to connect (24,25) and be connected with pressure medium case (28).
2, the device of the relatively rotation place of a relative driving wheel of adjusting as claimed in claim 1 variation is characterized in that: the safety check (20,21) that at least one is opened towards this controlling device (3) is set in each control wiring (16,17).
3, the device of the relatively rotation place of a relative driving wheel of adjusting as claimed in claim 1 or 2 variation is characterized in that: at least one throttle element (22,23) is set in each control wiring (16,17).
4, the device of the relatively rotation place of a relative driving wheel of adjusting as claimed in claim 3 variation, it is characterized in that: this throttle element (22,23) is arranged at pressure medium pump (19) and is connected between (24,25) with bypass.
5, the device that changes of the relatively rotation place of a relative driving wheel of the arbitrary described adjusting of claim as described above, it is characterized in that: this control valve (26,27) is by circulating valve, and particularly the pulse width modulation valve constitutes.
6, the device that changes of the relatively rotation place of a relative driving wheel of the arbitrary described adjusting of claim as described above, it is characterized in that: this control valve (26,27) is made of the bi-bit bi-pass selector valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98126978 CN1223331A (en) | 1997-12-17 | 1998-12-17 | Device for regulating relative position between one axle and driving wheel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19756017.2 | 1997-12-17 | ||
| CN 98126978 CN1223331A (en) | 1997-12-17 | 1998-12-17 | Device for regulating relative position between one axle and driving wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1223331A true CN1223331A (en) | 1999-07-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98126978 Pending CN1223331A (en) | 1997-12-17 | 1998-12-17 | Device for regulating relative position between one axle and driving wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1223331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439663C (en) * | 2003-12-16 | 2008-12-03 | 依纳-谢夫勒两合公司 | Internal combustion engine with hydraulic camshaft phasing device |
| CN112302752A (en) * | 2019-07-25 | 2021-02-02 | 句容嘉晟汽车配件有限公司 | VVT system |
-
1998
- 1998-12-17 CN CN 98126978 patent/CN1223331A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439663C (en) * | 2003-12-16 | 2008-12-03 | 依纳-谢夫勒两合公司 | Internal combustion engine with hydraulic camshaft phasing device |
| CN112302752A (en) * | 2019-07-25 | 2021-02-02 | 句容嘉晟汽车配件有限公司 | VVT system |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |