CN101038230A - Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof - Google Patents
Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof Download PDFInfo
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- CN101038230A CN101038230A CN 200710057216 CN200710057216A CN101038230A CN 101038230 A CN101038230 A CN 101038230A CN 200710057216 CN200710057216 CN 200710057216 CN 200710057216 A CN200710057216 A CN 200710057216A CN 101038230 A CN101038230 A CN 101038230A
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- phaser
- variable timing
- timing phase
- continuous variable
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Abstract
The present invention relates to a detecting system and method of the continuous variable timing phase device. The detecting system includes: an upper main body, a lower main body, a main shaft positioned between the upper main body and the lower main body (5); a valve assembly, a device for fixing the casing of the variable timing phase device; an angular displacement sensor (3), two engine oil pressure sensors, an oil tank, two two-phase two-way reversing valves, a three-phase four-way hydraulic pressure controlling value, a spillover valve and a variable hydraulic pressure pump. The response speed, the leakage quality and the open pressure of the phase device can be detected by said detecting system.
Description
Technical field
The present invention relates to a kind of internal-combustion engine continuous variable timing phase detecting device and detection method, relate more specifically to a kind of pick-up unit and detection method that is used for the response speed of phaser under detected phase device response speed, leakage rate and opening pressure and the radial force effect.
Background technology
VVT can be optimized the valve characteristic parameter, improves engine inlet and outlet performance, satisfies the requirement of engine in high rotating speed and the slow-speed of revolution, big load dynamic property, economy, toxic emission during with little load preferably, the whole engine combination property that improves.Now, the changeable air valve technology has become one of gordian technique of measured engine performance, and by to changeable air valve Study on Technology and innovation, internal combustion engine manufacturing merchant is just obtaining more and more strong competitive power.
Continuous variable cam phaser system acts on blade by internal oil pressure and makes its deflection, realized the step-less adjustment at phasing degree, under identical situation, there has been lifting significantly phase adjustment range and response speed aspect, and also fully ensured the reliability of system at the locking system of starting, idling etc., making engine performance obtain to compare other phaser has bigger improvement.In addition, no matter the organization plan compactness of vane type phaser system is at admission cam shaft, or can arranges easily on the exhaust cam shaft, is the variable valve actuator for air that is most widely used on the at present domestic and international vehicular engine.
Yet, as the judgement of properties of product, need carry out fast, accurate response speed phaser, leakage rate, locking lock opening pressure detects.
Summary of the invention
Consider the problems referred to above, the objective of the invention is to propose a kind of pick-up unit and method that can detect internal-combustion engine continuous variable timing phase response speed, leakage rate, opening pressure.
To achieve these goals, the invention provides a kind of phaser pick-up unit, comprising:
Be used to support upper body 1 and sub-body 5 with sealed cam axle main shaft, the main shaft 2 between upper body 1 and sub-body 5;
Variable timing phase housing fixator 6 is positioned at a side of sub-body, is used for fixing the variable timing phase housing;
Angular displacement sensor 3 is positioned at the other end of camshaft;
Two engine oil pressure pickups 20 link to each other with oil drain passage with the oil-feed of variable timing phase respectively, be used for the detected phase device advance the chamber and the retardance chamber fluid pressure;
Two bi-bit bi-pass reversal valve 23, one ends link to each other with oil drain passage with the oil-feed of phaser respectively, and the other end links to each other with A, the B port of three-position four-way hydraulic operation valve 15 respectively;
Three-position four-way hydraulic operation valve 15, A, B port link to each other with two bi-bit bi-pass reversal valves 23, and the P port links to each other with surplus valve 16, and the T port links to each other with fuel tank 18;
Volume adjustable hydraulic pump 17 links to each other with fuel tank.
Also comprise:
Can hang the cog belt of demarcating weight, be used for the situation that analogue phase device shell is subjected to radial force.
Be installed in heating arrangement and attemperating unit on the fuel tank.
A bolt that is used for fixing phaser stator and camshaft, described bolt is dextrorotation when detecting continuous variable timing phase, is left-handed when detecting the exhaust continuous variable timing phase detecting device.
One oil drain pan, oil drain pan can be for movable, plug-type or pluck any form by formula.
Above-mentioned continuous variable timing phase detecting device, when detecting the air inlet phase device, the spindle cam molded lines just in time contacts with the valve group in direction in advance, and when detection exhaust phaser, the spindle cam molded lines just in time contacts with the valve group in the hysteresis direction.
The response speed of detected phase device on said detecting system may further comprise the steps:
(1) obtains the rotational angle data and the rotation time data of camshaft, thereby obtain the rotational angle data and the time data of phaser rotor;
(2) angle-data obtains the response speed of phaser divided by time data.
The leakage rate of detected phase device on said detecting system may further comprise the steps:
(1) obtains advance chamber and the fluid pressure signal that blocks the chamber;
(2), measure the pressure differential in two chambeies of described phaser at engine oil pressure signal corresponding to each discrete point in the rotation process of described phaser.
The opening pressure of detected phase device on said detecting system may further comprise the steps:
(1) regulates surplus valve gradually;
(2) signal of meter record angular displacement sensor changes, and changes up to angular displacement;
(3) record engine oil pressure pickup, the opening pressure of the described phaser of output expression.
From following with reference to understanding other purpose of the present invention and feature the description of accompanying drawing.
Description of drawings
Fig. 1 is the main body figure of apparatus of the present invention.
Fig. 2 is the whole route maps of apparatus of the present invention, the configuration of cam angle sensor, cylinder identification sensor and crank angle sensor in the expression first embodiment of the invention.
Fig. 3 is apparatus of the present invention initial position control chart.
Fig. 4 is the front view of expression apparatus of the present invention.
Fig. 5 is the radial force load detecting figure of expression apparatus of the present invention.
Embodiment
Fig. 1 is the main body figure of apparatus of the present invention.
As Fig. 1, shown in 2, by heating and attemperating unit provides suitable hydraulic power source for phaser, hydraulic pump provides pressure oil for phaser, adjusts pick-up unit to the fluid pressure that needs by surplus valve 16, and the machine oil of a part of overflow simultaneously flow back into fuel tank 18 by pipeline, machine oil enters three-position four-way hydraulic operation valve 15, and link to each other with the P port, realize selecting to supply the corresponding chamber or the retardance chamber of advancing of phaser and Control Flow by control to valve.Two bi-bit bi-pass reversal valves 23 link to each other with A, the B port of hydraulic control valve 15 respectively, realize the break-make with the phaser oil circuit.Two bi-bit bi-pass reversal valves 23 are connected to two end product 22 of upper body respectively by bolt, realize the oil-feed and the oil return of phaser, or oil return or oil-feed.Two advance chamber, the retardance chambeies of oil circuit through arriving phaser behind the main shaft 2 respectively.Suitable like this machine oil acts on the blade by effect A, B two chambeies, and phaser rotor is rotated, and rotates thereby drive corner displacement sensor 3.
With reference to shown in Figure 4, phaser 13 stators own and rotor all can relatively rotate, pick-up unit as the phaser product, we only need rotor rotation, and stator is motionless, like this, by using phaser rotor fixator 6, can realize the circumferential movement of stationary phase device stator, simultaneously with phaser stator fixator by being threaded, can realize the quick replacing phaser in the phaser testing process.
With reference to shown in Figure 5, in the actual use of phaser, the stator of phaser is by the cog belt transmission, owing on the cog belt very big tensioning moment is arranged, radial deformation will take place in phaser to a certain extent that make, must have influence on the coaxial rotation of phaser stator and rotor, the leakage of the friction of accelerating phase device and phaser inside increases, and then has influence on the performance of phaser.By radial force loader 26 on phaser, add the demarcation weight, detect the influence of response speed on this basis.Radial force loader 26 is that cog belt (or chain), hook 27 and a guiding shape piece 29 are formed, and the track 28 that matches with it is arranged under main body, by adding the loading of indicated weight to hook 27 realization radial forces, simultaneously, guarantees that the phaser stator does not rotate.
In the actual use of phaser, phaser rotor is except inner each power, externally also to be subjected to the driving force of camshaft, and play a major role in the phase place adjustment process, the present invention is being equipped with the cam torsional interaction of valve group 4 analogue phase devices in engine use actual conditions in the main body down.
By Fig. 3, for the air inlet phase device, its initial phase moves along anticipated future position when setting in motion like this for lag position.When detecting the air inlet phase device, the spindle cam molded lines just in time contacts with the valve group in direction in advance; For the exhaust phaser, its initial phase moves along lag position when setting in motion like this for anticipated future position.When detecting the exhaust phaser, the spindle cam molded lines just in time contacts with the valve group in the hysteresis direction, and the phaser reference position that makes just in time is cam moment of torsion cut-in point, has the fixed and starting condition of reference position weighing apparatus and weighs and decide.
Because phaser is carrying out response performance under the radial force influence, the phaser that makes will hang installation, when under phaser, hanging weight, hamper can not be arranged at the bottom, but when changing phaser, has oil from main body the phaser effluent to be installed and, in order to keep clean before the table top, and saving machine oil, it is movable that the present invention uses oil drain pan, or plug-type or pluck Na Shi and can well finish above-mentioned task.
From the hydraulic oil that oil pump provides, there is air in the pipeline He in the phaser, air has very big influence to the response performance of phaser, link to each other with upper body 1 by bi-bit bi-pass reversal valve 23, no air trapping in the phaser chamber that makes, to the unitarity that detects, stability all is necessary.Engine oil pressure pickup is installed on sub-body 5 simultaneously, separates with control oil channel, and the pressure in the cavity can better be shown.
When detecting, by heating and temperature control equipment reaches experimental requirements oil temperature, open hydraulic pump then, adjust oil pressure by regulating surplus valve, meet the requirements of oil pressure; When detecting, partly control the duty of three-position four-way hydraulic operation valve by control survey, realize the control of changeable flow direction-changeable, reach the realization of phaser drive manner and running motion; Phase rotator by angular displacement sensor Measurement Phase device; Oil pressure by engine oil pressure pickup Measurement Phase device; Partly measure rotation time and the various signals of computing by control survey, finish the detection of projects.
In addition, during the influencing of the response speed of the phaser under measuring the radial force effect, the phaser rotor of dismantling earlier fixator re-uses the radial force loader and loads the indicated weight thing and measure.
Claims (9)
1, a kind of continuous variable timing phase detection system comprises:
Be used to support upper body (1) and sub-body (5) with sealed cam axle main shaft, be positioned at the main shaft (2) between upper body (1) and the sub-body (5);
Valve group (4), it is corresponding with spindle cam to be positioned at sub-body, is used for the cam torsional interaction of analog variable timing phase in engine uses;
Variable timing phase housing fixator (6) is positioned at a side of sub-body, is used for fixing the variable timing phase housing;
Angular displacement sensor (3) is positioned at the other end of camshaft;
Two engine oil pressure pickups (20) link to each other with oil drain passage with the oil-feed of variable timing phase respectively, be used for the detected phase device advance the chamber and the retardance chamber fluid pressure;
Fuel tank (18);
Two bi-bit bi-pass reversal valves (23), an end link to each other with oil drain passage with the oil-feed of phaser respectively, and the other end links to each other with A, the B port of three-position four-way hydraulic operation valve (15) respectively;
Three-position four-way hydraulic operation valve (15), A, B port link to each other with two bi-bit bi-pass reversal valves (23), and the P port links to each other with surplus valve (16), and the T port links to each other with fuel tank (18);
Surplus valve (16), its overflow vent links to each other with fuel tank (18), and oil-in links to each other with volume adjustable hydraulic pump;
Volume adjustable hydraulic pump (17) links to each other with fuel tank.
2, continuous variable timing phase detecting device according to claim 1 is characterized in that, also comprises: can hang the cog belt of demarcating weight, be used for the situation that analogue phase device shell is subjected to radial force.
3, continuous variable timing phase detecting device according to claim 1 is characterized in that, also comprises: be installed in heating arrangement and attemperating unit on the fuel tank.
4, continuous variable timing phase detecting device according to claim 1, it is characterized in that, also comprise a bolt that is used for fixing phaser stator and camshaft, described bolt is dextrorotation when detecting continuous variable timing phase, is left-handed when detecting the exhaust continuous variable timing phase detecting device.
5, according to the described continuous variable timing phase detecting device of claim 1, it is characterized in that when detecting the air inlet phase device, the spindle cam molded lines just in time contacts with the valve group in direction in advance, when detecting the exhaust phaser, the spindle cam molded lines just in time contacts with the valve group in the hysteresis direction.
6, according to any one described continuous variable timing phase detecting device of claim 1 to 5, it is characterized in that, also comprise an oil drain pan, oil drain pan can be for movable, plug-type or pluck any form by formula.
7, a kind of detection method that is used for the response speed of phaser, described detection method may further comprise the steps:
(1) obtains the rotational angle data and the rotation time data of camshaft, thereby obtain the rotational angle data and the time data of phaser rotor;
(2) angle-data obtains the response speed of phaser divided by time data.
8, a kind of detection method that is used for the leakage rate of phaser, described detection method may further comprise the steps:
(1) obtains advance chamber and the fluid pressure signal that blocks the chamber;
(2), measure the pressure differential in two chambeies of described phaser at engine oil pressure signal corresponding to each discrete point in the rotation process of described phaser.
9, a kind of detection method that is used for the opening pressure of phaser, described detection method may further comprise the steps:
(1) regulates surplus valve gradually;
(2) signal of meter record angular displacement sensor changes, and changes up to angular displacement;
(3) record engine oil pressure pickup, the opening pressure of the described phaser of output expression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100572161A CN100514020C (en) | 2007-04-26 | 2007-04-26 | Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100572161A CN100514020C (en) | 2007-04-26 | 2007-04-26 | Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038230A true CN101038230A (en) | 2007-09-19 |
| CN100514020C CN100514020C (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100572161A Expired - Fee Related CN100514020C (en) | 2007-04-26 | 2007-04-26 | Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907519A (en) * | 2010-06-30 | 2010-12-08 | 绵阳富临精工机械有限公司 | Engine variable valve timing system performance testboard |
| CN101922322A (en) * | 2009-06-10 | 2010-12-22 | 施韦比施冶金厂汽车有限公司 | The camshaft phase regulator that has accumulator |
| CN101710026B (en) * | 2009-11-17 | 2011-05-04 | 朱留存 | Variable valve timing performance test device of gasoline engine |
| CN102493888A (en) * | 2011-11-28 | 2012-06-13 | 重庆长安汽车股份有限公司 | Oil circuit structure of VVT (variable valve timing) engine cylinder cover system |
| CN105464825A (en) * | 2014-09-30 | 2016-04-06 | 通用汽车环球科技运作有限责任公司 | Variable valve lift diagnostic systems and methods using cam phaser differential oil pressure |
| CN110005960A (en) * | 2018-01-04 | 2019-07-12 | 黄羽婵 | The method of the automatic detection gas leakage of gas burning system |
-
2007
- 2007-04-26 CN CNB2007100572161A patent/CN100514020C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922322A (en) * | 2009-06-10 | 2010-12-22 | 施韦比施冶金厂汽车有限公司 | The camshaft phase regulator that has accumulator |
| CN101922322B (en) * | 2009-06-10 | 2013-08-21 | 施韦比施冶金厂汽车有限公司 | Camshaft phase adjuster with accumulator |
| CN101710026B (en) * | 2009-11-17 | 2011-05-04 | 朱留存 | Variable valve timing performance test device of gasoline engine |
| CN101907519A (en) * | 2010-06-30 | 2010-12-08 | 绵阳富临精工机械有限公司 | Engine variable valve timing system performance testboard |
| CN101907519B (en) * | 2010-06-30 | 2011-08-31 | 绵阳富临精工机械股份有限公司 | Engine variable valve timing system performance testboard |
| CN102493888A (en) * | 2011-11-28 | 2012-06-13 | 重庆长安汽车股份有限公司 | Oil circuit structure of VVT (variable valve timing) engine cylinder cover system |
| CN105464825A (en) * | 2014-09-30 | 2016-04-06 | 通用汽车环球科技运作有限责任公司 | Variable valve lift diagnostic systems and methods using cam phaser differential oil pressure |
| CN105464825B (en) * | 2014-09-30 | 2018-07-03 | 通用汽车环球科技运作有限责任公司 | Use the variable valve lift diagnostic system and method for cam phaser oil pressure difference |
| CN110005960A (en) * | 2018-01-04 | 2019-07-12 | 黄羽婵 | The method of the automatic detection gas leakage of gas burning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100514020C (en) | 2009-07-15 |
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Granted publication date: 20090715 Termination date: 20100426 |