CN106640386A - Method and device for CVVL (continuously variable valve lifting) self learning - Google Patents
Method and device for CVVL (continuously variable valve lifting) self learning Download PDFInfo
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- CN106640386A CN106640386A CN201510727063.1A CN201510727063A CN106640386A CN 106640386 A CN106640386 A CN 106640386A CN 201510727063 A CN201510727063 A CN 201510727063A CN 106640386 A CN106640386 A CN 106640386A
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- Prior art keywords
- valve lift
- cvvl
- lift location
- self
- controlled motor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention provides a method and device for CVVL (continuously variable valve lifting) self learning and relates to the technical field of automobiles. By adopting of the method and device for CVVL self learning, the technical problem of CVVL self learning failure caused by locked-rotor of a control motor is solved. The method for CVVL self learning comprises the following steps that a learning instruction is sent to the control motor in an engine by an electronic control unit; when a vehicle is powered on or powered off, the control motor receives the learning instruction and is subjected to CVVL self learning, the minimum air valve lifting position and the middle air valve lifting position are learned, and the middle air valve lifting position is an air valve lifting position between the maximum air valve lifting position and the minimum air valve lifting position; and the minimum air valve lifting position and the middle air valve lifting position which are learned in CVVL self learning are fed back to the electronic control unit by a feedback unit. According to the method for CVVL self learning, CVVL self learning failure caused by locked-rotor of the control motor can be avoided.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of method and device of CVVL self studies.
Background technology
With the raising that the continuous consumption and motor vehicle emission of the energy are required, the engine power performance of vehicle, economy
Property and discharge capacity become the emphasis of concern.Due to CVVL (Continuously variable valve lift,
Continuously variable valve lift) system can change valve stroke according to the needs of Different Work Condition of Engine, drops
Low pump gas loss and frictional dissipation, so as to reduce oil consumption, improve the power of electromotor, therefore, CVVL
System being applied to for new trend in vehicle.
Due to CVVL system mechanics complex structures, air input of engine by air is controlled by valve stroke,
Need to ensure valve stroke control accuracy and air inlet certainty of measurement, so as to ensure the stability of CVVL systems.
In order to ensure valve stroke control accuracy and air inlet certainty of measurement, CVVL systems are before the startup that is powered every time
It is required for carrying out CVVL self studies, i.e., the function and valve lift location of CVVL systems is checked
And record.But, in the prior art, if during engine stop, the valve of cylinder is close to complete in vehicle
Open position, CVVL systems carry out CVVL self studies, the ascending regulation lift of controlled motor, here
During controlled motor need to overcome resistance, in addition it is also necessary to overcome the returning place force of valve spring, controlled motor needs
The very big driving force of output, so that the driving moment of controlled motor is excessive, there is stall in controlled motor,
It is out of service, then CVVL self studies failure.
The content of the invention
In view of this, it is contemplated that proposing a kind of method of CVVL self studies, to avoid controlled motor from sending out
The CVVL self studies failure that raw stall causes.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of method of CVVL self studies, the method for the CVVL self studies includes：
Electronic control unit to the controlled motor in electromotor sends study instruction, and the study instruction is used to touch
Sending out controlled motor described carries out continuously variable valve lift CVVL self studies；
On the car load under electricity or car load during electricity, the controlled motor receives the study instruction, carries out described
CVVL self studies, the minimum valve lift location of study and middle valve lift location, the middle valve liter
Journey position is the valve lift location between maximum valve lift position and the minimum valve lift location；
Feedback unit by the CVVL self studies learning to described minimum valve lift location and it is described in
Between valve lift location feed back to the electronic control unit.
Specifically, the controlled motor carries out the CVVL self studies, learns the minimum valve stroke position
The step of putting with the middle valve lift location includes：
The controlled motor learns to the minimum valve lift location from the middle valve lift location；
The controlled motor learns to the middle valve lift location from the minimum valve lift location.
Further, the method for the CVVL self studies also includes：
When the controlled motor carries out the CVVL self studies to fail, the electromotor adopts the centre
Valve lift location starts；
The controlled motor re-starts the CVVL self studies.
Further, the method for the CVVL self studies also includes：
When electromotor goes up first electricity, the controlled motor receives the study instruction, carries out the CVVL
Self study, learns to the minimum valve lift location from initial valve lift location；
The controlled motor learns to maximum valve lift position from the minimum valve lift location；
The controlled motor learns to the middle valve lift location from the maximum valve lift position；
Described minimum valve lift location that feedback unit arrives the CVVL self studies learning, it is described most
Big valve lift location and the middle valve lift location feed back to the electronic control unit.
Further, the method for the CVVL self studies also includes：
When the controlled motor carries out the CVVL self studies to fail, the electromotor carries out jiggering, and
The position of adjustment camshaft；
The controlled motor re-starts the CVVL self studies.
Relative to prior art, the method for CVVL self studies of the present invention has the advantage that：
In the method for CVVL self studies of the present invention, under electric or car load on car load during electricity, control electricity
Machine receives the study instruction that electronic control unit sends, and carries out CVVL self studies, the minimum valve stroke of study
Position and middle valve lift location, the CVVL that adjust lift ascending with controlled motor in prior art
The method of self study is compared, and the present invention is on the car load under electricity or car load during electricity, if engine stop and cylinder
The close full open position of valve, what controlled motor was carried out is minimum valve lift location and middle valve lift
The study of position, does not carry out the study of maximum valve lift position, therefore, the driving of controlled motor output
Power is less so that the driving moment of controlled motor is less, can't cause controlled motor that stall occurs, so as to
Avoid controlled motor that the CVVL self studies failure that stall causes occurs.
Another object of the present invention is to a kind of device of CVVL self studies is proposed, to avoid controlled motor from driving
Kinetic moment is excessive, and controlled motor occurs the CVVL self studies failure that stall causes.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of device of CVVL self studies, the device of the CVVL self studies includes electronic control unit,
Controlled motor and feedback unit；The electronic control unit, the controlled motor and the feedback unit are two-by-two
It is connected；
The electronic control unit is used to send study instruction to the controlled motor, and the study instruction is used for
Triggering the controlled motor carries out continuously variable valve lift CVVL self studies；
Under electric or car load on car load during electricity, the controlled motor is used to receive the study instruction, carries out institute
State CVVL self studies, the minimum valve lift location of study and middle valve lift location, the middle valve
Lift location is the valve lift location between maximum valve lift position and the minimum valve lift location；
The feedback unit is used for the described minimum valve lift location for arriving the CVVL self studies learning
The electronic control unit is fed back to the middle valve lift location.
Specifically, the controlled motor from the middle valve lift location specifically for learning to the minimum
Valve lift location；Also particularly useful for from the minimum valve lift location study to the middle valve lift
Position.
Further, when the controlled motor carries out the CVVL self studies to fail, the electromotor is used
In using middle valve lift location startup；
The controlled motor is used to re-start the CVVL self studies.
Further, when electromotor goes up first electricity, the controlled motor is used to receive the study instruction,
The CVVL self studies are carried out, is learnt to the minimum valve lift location from initial valve lift location；
It is additionally operable to from the minimum valve lift location learn to maximum valve lift position；It is additionally operable to from the maximum
Valve lift location study is to the middle valve lift location；
Feedback unit is used for described minimum valve lift location, the institute for arriving the CVVL self studies learning
State maximum valve lift position and the middle valve lift location feeds back to the electronic control unit.
Further, the controlled motor is located in the electromotor；Described in carrying out when the controlled motor
When CVVL self studies fail, the electromotor is used to carry out jiggering, and adjusts the position of camshaft；
The controlled motor is used to re-start the CVVL self studies.
Relative to prior art, the device of CVVL self studies of the present invention has the advantage that：
The device of the CVVL self studies is had with the method for above-mentioned CVVL self studies relative to prior art
Some Dominant Facies are same, will not be described here.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing
In：
Fig. 1 is the flow chart of the method for the CVVL self studies described in the embodiment of the present invention one；
Fig. 2 is the flow chart of the method for the CVVL self studies described in the embodiment of the present invention two；
Fig. 3 is the structural representation of the device of the CVVL self studies described in the embodiment of the present invention three.
Specific embodiment
It should be noted that the embodiment and the feature in embodiment in the case where not conflicting, in the present invention
Can be mutually combined.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Embodiment one
Fig. 1 is referred to, a kind of method of CVVL self studies is embodiments provided, the CVVL is certainly
The method of study includes：
Step 101, electronic control unit to the controlled motor in electromotor sends study instruction；Wherein, learn
Practise instruction carries out continuously variable valve lift CVVL self studies for triggering controlled motor, and controlled motor is connecing
After receiving study instruction, CVVL self studies are proceeded by.
Step 102, under electric or car load on car load during electricity, controlled motor receives study instruction, carries out CVVL
Self study, the minimum valve lift location of study and middle valve lift location；Middle valve lift location is for most
Valve lift location between big valve lift location and minimum valve lift location, specifically, middle valve
Lift location is the lift location in the middle of being located at maximum valve lift position and minimum valve lift location, middle
Valve lift location is also the vehicle valve lift location that in operation valve is normally at, such as concrete real
Shi Zhong, middle valve lift location can be 5mm valve lift locations.
Step 103, minimum valve lift location and centre that feedback unit arrives CVVL self study learnings
Valve lift location feeds back to electronic control unit；Electronic control unit receives the most stingy of feedback unit feedback
Door lift location and middle valve lift location, and record, so as to complete the process of whole CVVL self studies,
Specifically, feedback unit can be lift range sensor.Complete CVVL self studies and CVVL self studies into
After work(, valve lift location is maintained at middle valve lift location and awaits orders, and electromotor adopts middle valve lift
Position starts, and is easy to engine cold-start, can realize rapid warming-up.
In the method for CVVL self studies of the present invention, under electric or car load on car load during electricity, control electricity
Machine receives the study instruction that electronic control unit sends, and carries out CVVL self studies, the minimum valve stroke of study
Position and middle valve lift location, the CVVL that adjust lift ascending with controlled motor in prior art
The method of self study is compared, and the present invention is on the car load under electricity or car load during electricity, if engine stop and cylinder
The close full open position of valve, what controlled motor was carried out is minimum valve lift location and middle valve lift
The study of position, does not carry out the study of maximum valve lift position, therefore, the driving of controlled motor output
Power is less so that the driving moment of controlled motor is less, can't cause controlled motor that stall occurs, so as to
Avoid controlled motor that the CVVL self studies failure that stall causes occurs.When being additionally, since on car load electric
Jing has sufficiently carried out CVVL self studies, and in vehicle operation with car load power up in it is most stingy
Door lift location, middle valve lift location is essentially identical, therefore, it is possible to save vehicle operation in
CVVL self study processes.
Embodiment two
Refer to Fig. 2, further, in order to describe in detail the minimum valve lift location of controlled motor study and
The content of middle valve lift location, step 102 can be refined as step 1021 and step 1022；Whole
Under Che Shang electricity or car load during electricity, it is also possible to because other factors so that CVVL self studies fail, in order to
CVVL self studies can be re-started, it is ensured that CVVL self study successes, on the basis of embodiment one also
Step 104 and step 105 can be added；Electricity is gone up first in electromotor, when being also not mounted on vehicle, control
Motor processed is also required to carry out CVVL self studies, on the basis of embodiment one, can also add step 106-
Step 109；If the CVVL self studies failure when electromotor goes up first electricity, in order to re-start CVVL
Self study, and ensure CVVL self study successes, step 110 and step 111 can also be added；Specifically
Bright content is as follows：
Step 1021, under electric or car load on car load during electricity, controlled motor receives study instruction, controlled motor
Learn to minimum valve lift location from middle valve lift location；Because electricity, vehicle ran on car load
In journey or under car load during electricity, during electromotor is typically all in the state operated using middle valve lift location,
Therefore under electric or car load on car load during electricity, controlled motor starts study from middle valve lift location, by greatly extremely
Little adjustment lift, until study is to minimum valve lift location.
Step 1022, controlled motor learns to middle valve lift location from minimum valve lift location；In step
In rapid 1021, controlled motor learns to minimum valve lift location from middle valve lift location,
In step 1022, controlled motor learns to middle valve lift location from minimum valve lift location, keeps sending out
Motivation is in the state using the operating of middle valve lift location.
Step 104, when controlled motor carries out CVVL self studies to fail, electromotor adopts middle valve liter
Journey position starts；Wherein, when exception occurs during CVVL self studies are carried out in controlled motor, cause
CVVL self studies fail, then electromotor is started using middle valve lift location, in engine idling operation
When re-start CVVL self studies, it is ensured that electromotor can run well.
Step 105, controlled motor re-starts CVVL self studies；It should be noted that electric on car load
The CVVL self studies failure of Shi Jinhang, controlled motor re-starts CVVL self studies and refers to is starting
During machine idle running, controlled motor quickly learns to minimum valve lift location from middle valve lift location,
Learn to maximum valve lift position from minimum valve lift location again, then from the study of maximum valve lift position
To middle valve lift location；The CVVL self studies failure carried out during electricity under car load, controlled motor is again
Carry out CVVL self studies and refer to controlled motor from the study of middle valve lift location to minimum valve stroke
Position, then learn to middle valve lift location from minimum valve lift location；Re-starting CVVL certainly
After study, the state operated using middle valve lift location is maintained the engine at, it is ensured that electromotor is normal
Operating.If it is noted that the CVVL self studies failure for carrying out again, repeat step 104 and step
Rapid 105, until CVVL self study successes.
Step 106, when electromotor goes up first electricity, controlled motor receives study instruction, carries out CVVL certainly
Study, learns to minimum valve lift location from initial valve lift location；When electromotor goes up first electricity,
Valve is located on an initial position, and the initial position is exactly initial valve lift location, therefore, when starting
When prow time is upper electric, CVVL self studies are from the beginning of initial valve lift location.
Step 107, controlled motor learns to maximum valve lift position from minimum valve lift location.
Step 108, controlled motor learns to middle valve lift location from maximum valve lift position.Need
It is noted that learning minimum valve lift location, maximum valve lift position, middle valve in controlled motor
After lift location success, repeat from initial valve lift location to learn to minimum valve lift location, from minimum
Valve lift location study learns to middle gas to maximum valve lift position and from maximum valve lift position
The step of door lift location, confirmed, it is ensured that CVVL self studies success.
Step 109, minimum valve lift location, maximum that feedback unit arrives CVVL self study learnings
Valve lift location and middle valve lift location feed back to electronic control unit；On electromotor is first during electricity
Carry out minimum valve lift location, maximum valve lift position and middle gas that CVVL self study learnings are arrived
Door lift location, can become after subsequent engine is attached on vehicle, carry out during electricity under electricity or car load on car load
The basis of CVVL self studies.
Step 110, when controlled motor carries out CVVL self studies to fail, electromotor carries out jiggering, and adjusts
The position of whole camshaft；When electromotor goes up first electricity, and controlled motor carries out CVVL self studies failure, by
Camshaft in electromotor is used to controlling the opening and closing action of valve, therefore electromotor is when going up first electricity
The CVVL of generation is likely to be what camshaft caused, therefore carries out jiggering, adjusts electromotor convexity wheel shaft
Position, in order to re-start CVVL self studies in subsequent process.
Step 111, controlled motor re-starts CVVL self studies；It should be noted that here again
Carry out CVVL self studies and refer to controlled motor from the study of initial valve lift location to minimum valve stroke
Position, learns to maximum valve lift position and from maximum valve lift position from minimum valve lift location
Learn to middle valve lift location.If it is noted that carry out again CVVL self studies failure,
Then repeat step 110 and step 111, until CVVL self study successes.
By going up first during electricity carries out CVVL self studies in electromotor, repeatedly study, confirm it is minimum
Valve lift location, maximum valve lift position and middle valve lift location, so as to ensure that CVVL learns by oneself
The Stability and veracity of habit.The embodiment of the present invention goes up first electricity on electricity, car load (containing vehicle fortune in electromotor
Row process), carry out VCCL self studies under the operating mode such as electricity under car load, it is ensured that in the different operating modes of electromotor
Under, CVVL self studies can be normally carried out.
In the prior art, if controlled motor carries out CVVL self study failures, into fault mode, one
Aspect cannot again carry out self study so that CVVL systems cannot be used normally, on the other hand, into event
Air throttle can be switched to after barrier pattern to control air inflow, and air throttle, compared with valve, throttle control enters
Tolerance can increase oil consumption.Therefore, the CVVL self-learning methods that the present invention is provided, lose in CVVL self studies
When losing, can adjust accordingly, re-start CVVL self studies, so as to avoid enter into fault mode, one
Aspect ensure that the stability of normal use and the CVVL self studies of CVVL systems, on the other hand,
Oil consumption can be reduced, it is cost-effective.
Embodiment three
Fig. 3 is referred to, a kind of device 200 of CVVL self studies, the CVVL is embodiments provided
The device 200 of self study includes electronic control unit 201, controlled motor 202 and feedback unit 203, control
Motor 202 is located in electromotor 204, wherein, electronic control unit 201, controlled motor 202 and feedback
Unit 203 is connected two-by-two.
Electronic control unit 201 is used to send study instruction to controlled motor 202, and study is instructed for triggering
Controlled motor 202 carries out CVVL self studies；
Under electric or car load on car load during electricity, controlled motor 202 is used to receive and learns to instruct, and carries out CVVL
Self study, the minimum valve lift location of study and middle valve lift location, middle valve lift location is for most
Valve lift location between big valve lift location and minimum valve lift location；
Feedback unit 203 is used for the minimum valve lift location for arriving CVVL self study learnings and middle gas
Door lift location feeds back to electronic control unit 201.
Illustrating for each ingredient in the device 200 of CVVL self studies is referred in embodiment one
Particular content, will not be described here.
In the device 200 of CVVL self studies of the present invention, under electric or car load on car load during electricity, control
Motor processed 202 receives the study instruction that electronic control unit 201 sends, and carries out CVVL self studies, learns
Minimum valve lift location and middle valve lift location, it is ascending with controlled motor in prior art 202
The method for adjusting the CVVL self studies of lift is compared, when the present invention is electric under electric or car load on car load, if sending out
Motivation stopping and the close full open position of valve of cylinder, what controlled motor 202 was carried out is minimum valve liter
Journey position and the study of middle valve lift location, do not carry out the study of maximum valve lift position, therefore,
The driving force of the output of controlled motor 202 is less, so as to the driving moment of controlled motor 202 is less, can't
Cause controlled motor 202 that stall occurs, so as to avoid controlled motor 202 occur the CVVL that causes of stall from
Study failure.
Example IV
Further, below by each composition in the device 200 of the CVVL self studies in embodiment three
Partial concrete function is illustrated：
Specifically, controlled motor 202 from middle valve lift location specifically for learning to minimum valve stroke
Position；Also particularly useful for from the study of minimum valve lift location to middle valve lift location.
Further, when controlled motor 202 carries out CVVL self studies to fail, electromotor 204 is used to adopt
Started with middle valve lift location；
Controlled motor 202 is used to re-start CVVL self studies.
Further, when electromotor 204 goes up first electricity, controlled motor 202 is used to receive study instruction,
CVVL self studies are carried out, is learnt to minimum valve lift location from initial valve lift location；Be additionally operable to from
Minimum valve lift location study is to maximum valve lift position；It is additionally operable to from maximum valve lift position learn
To middle valve lift location；
Feedback unit 203 is used for minimum valve lift location, the most air for arriving CVVL self study learnings
Door lift location and middle valve lift location feed back to electronic control unit 201.
Further, when controlled motor 202 carry out CVVL self studies fail when, electromotor 204 be used for into
Row jiggering, and adjust the position of camshaft；
Controlled motor 202 is used to re-start CVVL self studies.
Each embodiment in this specification is described by the way of progressive, phase homophase between each embodiment
As part mutually referring to what each embodiment was stressed is the difference with other embodiment.
For embodiment especially for the device of CVVL self studies, because it is substantially similar to embodiment of the method,
So describing fairly simple, related part is illustrated referring to the part of embodiment of the method.
Presently preferred embodiments of the present invention is the foregoing is only, it is all at this not to limit the present invention
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in this
Within bright protection domain.
Claims (10)
1. a kind of method of CVVL self studies, it is characterised in that the method bag of the CVVL self studies
Include：
Electronic control unit to the controlled motor in electromotor sends study instruction, and the study instruction is used to touch
Sending out controlled motor described carries out continuously variable valve lift CVVL self studies；
On the car load under electricity or car load during electricity, the controlled motor receives the study instruction, carries out described
CVVL self studies, the minimum valve lift location of study and middle valve lift location, the middle valve liter
Journey position is the valve lift location between maximum valve lift position and the minimum valve lift location；
Feedback unit by the CVVL self studies learning to described minimum valve lift location and it is described in
Between valve lift location feed back to the electronic control unit.
2. the method for CVVL self studies according to claim 1, it is characterised in that the control
Motor carries out the CVVL self studies, learns the minimum valve lift location and the middle valve lift
The step of position, includes：
The controlled motor learns to the minimum valve lift location from the middle valve lift location；
The controlled motor learns to the middle valve lift location from the minimum valve lift location.
3. the method for CVVL self studies according to claim 2, it is characterised in that the CVVL
The method of self study also includes：
When the controlled motor carries out the CVVL self studies to fail, the electromotor adopts the centre
Valve lift location starts；
The controlled motor re-starts the CVVL self studies.
4. the method for CVVL self studies according to claim 1, it is characterised in that the CVVL
The method of self study also includes：
When electromotor goes up first electricity, the controlled motor receives the study instruction, carries out the CVVL
Self study, learns to the minimum valve lift location from initial valve lift location；
The controlled motor learns to the maximum valve lift position from the minimum valve lift location；
The controlled motor learns to the middle valve lift location from the maximum valve lift position；
Described minimum valve lift location that feedback unit arrives the CVVL self studies learning, it is described most
Big valve lift location and the middle valve lift location feed back to the electronic control unit.
5. the method for CVVL self studies according to claim 4, it is characterised in that the CVVL
The method of self study also includes：
When the controlled motor carries out the CVVL self studies to fail, the electromotor carries out jiggering, and
The position of adjustment camshaft；
The controlled motor re-starts the CVVL self studies.
6. a kind of device of CVVL self studies, it is characterised in that the device bag of the CVVL self studies
Include electronic control unit, controlled motor and feedback unit；The electronic control unit, the controlled motor and
The feedback unit is connected two-by-two；
The electronic control unit is used to send study instruction to the controlled motor, and the study instruction is used for
Triggering the controlled motor carries out continuously variable valve lift CVVL self studies；
Under electric or car load on car load during electricity, the controlled motor is used to receive the study instruction, carries out institute
State CVVL self studies, the minimum valve lift location of study and middle valve lift location, the middle valve
Lift location is the valve lift location between maximum valve lift position and the minimum valve lift location；
The feedback unit is used for the described minimum valve lift location for arriving the CVVL self studies learning
The electronic control unit is fed back to the middle valve lift location.
7. the device of CVVL self studies according to claim 6, it is characterised in that the control
Motor from the middle valve lift location specifically for learning to the minimum valve lift location；It is also concrete
For learning to the middle valve lift location from the minimum valve lift location.
8. the device of CVVL self studies according to claim 7, it is characterised in that when the control
When motor processed carries out the CVVL self studies failure, the electromotor is used to adopt the middle valve lift
Position starts；
The controlled motor is used to re-start the CVVL self studies.
9. the device of CVVL self studies according to claim 6, it is characterised in that work as electromotor
When going up electricity first, the controlled motor is used to receive the study instruction, carries out the CVVL self studies,
Learn to the minimum valve lift location from initial valve lift location；It is additionally operable to from the minimum valve liter
The study of journey position is to maximum valve lift position；It is additionally operable to from maximum valve lift position study to described
Middle valve lift location；
Feedback unit is used for described minimum valve lift location, the institute for arriving the CVVL self studies learning
State maximum valve lift position and the middle valve lift location feeds back to the electronic control unit.
10. the device of CVVL self studies according to claim 9, it is characterised in that the control
Motor is located in the electromotor；It is described when the controlled motor carries out the CVVL self studies to fail
Electromotor is used to carry out jiggering, and adjusts the position of camshaft；
The controlled motor is used to re-start the CVVL self studies.
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| CN201510727063.1A CN106640386B (en) | 2015-10-30 | 2015-10-30 | A kind of method and device of CVVL self study |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561231A (en) * | 2017-06-09 | 2018-09-21 | 长城汽车股份有限公司 | The control strategy of continuous variable valve lift mechanism |
| CN109030006A (en) * | 2017-06-09 | 2018-12-18 | 长城汽车股份有限公司 | The detection method and system of continuous variable valve lift mechanism |
| CN110685830A (en) * | 2019-09-30 | 2020-01-14 | 潍柴动力股份有限公司 | Method, device, equipment and storage medium for detecting excessive valve control deviation |
| CN110872997A (en) * | 2018-08-30 | 2020-03-10 | 现代自动车株式会社 | CVVD position learning method based on condition application and CVVD system |
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| CN108561231B (en) * | 2017-06-09 | 2020-09-04 | 长城汽车股份有限公司 | Control strategy for continuously variable valve lift mechanism |
| RU2736674C1 (en) * | 2017-06-09 | 2020-11-19 | Грэйт Уолл Мотор Компани Лимитед | Method of stepless valve lifting mechanism control, device for implementation of such control method and nonvolatile computer-readable data medium for implementation of such control method |
| CN109030006B (en) * | 2017-06-09 | 2021-03-19 | 长城汽车股份有限公司 | Detection method and system of continuous variable valve lift mechanism |
| CN110872997A (en) * | 2018-08-30 | 2020-03-10 | 现代自动车株式会社 | CVVD position learning method based on condition application and CVVD system |
| CN110872997B (en) * | 2018-08-30 | 2023-08-04 | 现代自动车株式会社 | CVVD position learning method and CVVD system based on condition application |
| CN110685830A (en) * | 2019-09-30 | 2020-01-14 | 潍柴动力股份有限公司 | Method, device, equipment and storage medium for detecting excessive valve control deviation |
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