CN109030006A - The detection method and system of continuous variable valve lift mechanism - Google Patents
The detection method and system of continuous variable valve lift mechanism Download PDFInfo
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- CN109030006A CN109030006A CN201710431954.1A CN201710431954A CN109030006A CN 109030006 A CN109030006 A CN 109030006A CN 201710431954 A CN201710431954 A CN 201710431954A CN 109030006 A CN109030006 A CN 109030006A
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- variable valve
- continuous variable
- valve lift
- lift mechanism
- engine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
Abstract
The invention discloses a kind of detection method of continuous variable valve lift mechanism and systems, this method is included in continuous variable valve lift mechanism and completes after dispensing, and carries out lift debugging to the continuous variable valve lift mechanism respectively, carries out engine thermal testing, engine thermal starting test and engine cold-start test to engine；Judge whether the self study of the self study of lift debugging, the self study of engine thermal testing, the self study of engine thermal starting test and engine cold-start test is successful；If it is not, then testing the continuous variable valve lift mechanism with the presence or absence of failure, and failure part is replaced.According to the method for the embodiment of the present invention, the reliability of continuous variable valve lift mechanism self study is improved, so that continuous variable valve lift mechanism can work normally in warm boot, Cold Start.
Description
Technical field
The present invention relates to automobile technical field, in particular to the detection method of a kind of continuous variable valve lift mechanism and it is
System.
Background technique
With the increasingly serious environmental problems, low emission and environmental protection have become the precondition that engine enters market,
Conventional gasoline engin changes the size of engine load by changing the size of throttle adjustment air inflow, in Smaller load work
Under condition, throttle opening very little, vacuum degree is very big after air throttle, and the pumping loss of engine breathing process is very big, and here it is vapour
An oil machine working efficiency major reason lower than diesel engine.In order to promote the efficiency of engine, continuous variable valve is proposed
Lift technology is needed since there are many automatically controlled component of continuous variable valve lift mechanism to continuous variable valve lift mechanism
Numerous automatically controlled components tested, in the related technology, test it is not comprehensive, therefore, continuous variable valve lift mechanism
Reliability is difficult to be protected.
Summary of the invention
In view of this, the present invention is directed to propose a kind of detection method of continuous variable valve lift mechanism, this method are promoted
The reliability of continuous variable valve lift mechanism self study so that continuous variable valve lift mechanism in warm boot, cold open
It can be worked normally during dynamic.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of detection method of continuous variable valve lift mechanism, the continuous variable valve lift mechanism include eccentric shaft
Assembly (9), the bias axle assembly (9) includes mandrel (12) and eccentric wheel (14), and the mandrel (12) is suitable for and driving unit
Be connected, be set in the mandrel (12) outside to the adjustable angle of the eccentric wheel (14), and with the mandrel (12) clearance fit,
The described method includes: after continuous variable valve lift mechanism completes packing, respectively to the continuous variable valve lift mechanism
It carries out lift debugging, carry out engine thermal testing, engine thermal starting test and engine cold-start test to engine；Judgement rises
The self study of journey debugging, the self study of engine thermal testing, the self study of engine thermal starting test and engine cold-start are tested
Self study it is whether successful；If it is not, then testing the continuous variable valve lift mechanism with the presence or absence of failure, and to failure
Part is replaced.
Further, the test continuous variable valve lift mechanism whether there is failure, and carry out to failure part
Replacement, comprising: the motor and automatically controlled component for testing the continuous variable valve lift mechanism are with the presence or absence of failure；If so,
Then replace corresponding failure part.
Further, when there are when failure for the continuous variable valve lift mechanism, further includes: measure the continuous variable
Torque under air valve lift range mechanism heat engine；And according to the torque and the first mark turn under the continuous variable valve lift mechanism heat engine
The comparison result analyzing failure cause of value.
Further, when there are when failure for the continuous variable valve lift mechanism, further includes: measure the continuous variable
Torque under air valve lift range mechanism cold；And according to the torque and the second mark turn under the continuous variable valve lift mechanism cold
The comparison result analyzing failure cause of value.
Compared with the existing technology, the detection method of continuous variable valve lift mechanism of the present invention has following excellent
Gesture:
The detection method of the continuous variable valve lift mechanism of the embodiment of the present invention improves continuously variable valve lift machine
The reliability of structure self study, so that continuous variable valve lift mechanism can normal work in warm boot, Cold Start
Make.Furthermore, it is contemplated that having error in part thermal expansion and cold contraction effect and installation process, it is likely to result in mechanism clamping stagnation.Clamping stagnation will
It will cause continuous variable valve lift mechanism self study failure, therefore, self study is tested during test process contains heat examination,
The detection of self study when warm boot, cold starting, so that detection is more comprehensive, promote continuous variable valve lift mechanism can
By property.
Another object of the present invention is to propose a kind of detection method of continuous variable valve lift mechanism, the system improving
The reliability of continuous variable valve lift mechanism self study so that continuous variable valve lift mechanism in warm boot, cold open
It can be worked normally during dynamic.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of detection system of continuous variable valve lift mechanism, the continuous variable valve lift mechanism include eccentric shaft
Assembly (9), the bias axle assembly (9) includes mandrel (12) and eccentric wheel (14), and the mandrel (12) is suitable for and driving unit
Be connected, be set in the mandrel (12) outside to the adjustable angle of the eccentric wheel (14), and with the mandrel (12) clearance fit,
The system comprises: test module is used for after continuous variable valve lift mechanism completes packing, respectively to the continuous variable
Air valve lift range mechanism carries out lift debugging, engine thermal testing, engine thermal starting test are carried out to engine and engine is cold opens
Dynamic test；Judgment module, for judging the self study of lift debugging, the self study of engine thermal testing, engine thermal starting test
Self study and engine cold-start test self study it is whether successful；Detection module, for the lift debug from
The self study of study, the self study of engine thermal testing, the self study of engine thermal starting test and engine cold-start test does not have
When having all successful, the continuous variable valve lift mechanism is tested with the presence or absence of failure, and replace to failure part.
Further, the detection module is used for: test the continuous variable valve lift mechanism motor and automatically controlled member
Device whether there is failure；If it is, replacing corresponding failure part.
Further, the detection module is also used to measure in the continuous variable valve lift mechanism there are when failure
Torque under the continuous variable valve lift mechanism heat engine；And according to the torsion under the continuous variable valve lift mechanism heat engine
Square and the first mark turn the comparison result analyzing failure cause of value.
Further, the detection module is also used to measure the torque under the continuous variable valve lift mechanism cold；
And according to the comparison result analyzing failure cause of torque and the second mark turn value under the continuous variable valve lift mechanism cold.
The inspection of the detection system of the continuous variable valve lift mechanism and above-mentioned continuous variable valve lift mechanism
Possessed advantage is identical compared with the existing technology for survey method, and details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of eccentric axle assembly described in the embodiment of the present invention；
Fig. 2 is cross-sectional view of the eccentric axle assembly at fastener described in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of eccentric wheel described in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of variable air valve lift range mechanism described in the embodiment of the present invention；
Fig. 5 is the flow chart of the valve stroke adjustment method of the continuous variable valve lift mechanism of the embodiment of the present invention；
Fig. 6 is the flow chart of the detection method of the continuous variable valve lift mechanism of the embodiment of the present invention；
Fig. 7 is the detail flowchart of the detection method of the continuous variable valve lift mechanism of the embodiment of the present invention；
Fig. 8 is the structural block diagram of the detection system of the continuous variable valve lift mechanism of the embodiment of the present invention.
Description of symbols:
Variable air valve lift range mechanism 100,
Camshaft 1, intermediate swing arm 2, adjusting pin 3, roller rocker arms 4, valve 5, linking arm fixed pin 6, linking arm 7 are adjusted
Arm 8, eccentric axle assembly 9, control motor 10, minimum lift spacer pin 11a, maximum lift spacer pin 11b, mandrel 12, worm gear 13,
Eccentric wheel 14, off-centre operation section 14a, fastening section 14b, arcwall face 14c, adjustment hole 14d, gasket 15, fastener 16, bearing assembly
17, retaining ring 18, lift range sensor trundle 19, resetting-mechanism 20, the detection system 800 of continuous variable valve lift mechanism, survey
Die trial block 810, judgment module 820, detection module 830.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in figure 4, variable air valve lift range mechanism 100 may include that camshaft 1, intermediate swing arm 2, adjusting pin 3, roller shake
Arm 4, valve 5, linking arm fixed pin 6, linking arm 7, regulating arm 8, eccentric axle assembly 9, control motor 10 and resetting-mechanism 20.
Variable air valve lift range mechanism 100 can be continuous variable valve lift mechanism.
Wherein camshaft 1 is connected with the crankshaft of engine, for example can be connected by chain conveyer, and camshaft 1 is rotated and driven
Dynamic intermediate swing arm 2 is rotation center swing with adjusting pin 3, and intermediate swing arm 2 drives unlatching and the pass of the control valve 5 of roller rocker arms 4
It closes, resetting-mechanism 20 is for driving intermediate swing arm 2 to reset.
Control motor 10 can be connect with eccentric 9 power coupling of axle assembly, be done with the eccentric axle assembly 9 of control clockwise or inverse
The rotation of hour hands both direction, such as the output shaft of control motor 10 can be set to worm screw, and eccentric axle assembly 9 may include whirlpool
Wheel 13, worm screw 13 engages with turbine, so that control motor 10 is connect with eccentric 9 power coupling of axle assembly.
Eccentric axle assembly 9 has eccentric wheel 14, and the both ends of regulating arm 8 are respectively axis hole gap with eccentric wheel 14, adjusting pin 3
Cooperation, the both ends of linking arm 7 are connected with adjusting pin 3 and linking arm fixed pin 6 respectively, and linking arm fixed pin 6 can be fixedly mounted
On cylinder cap, linking arm 7 is used to limit the motion profile of adjusting pin 3.
When eccentric wheel 14 rotates, drive adjusting pin 3 with linking arm fixed pin 6 for rotation center swing by regulating arm 8, by
In the rotation center that adjusting pin 3 is intermediate swing arm 2, in this way, eccentric wheel 14 rotates the rotation center that intermediate swing arm 2 can be realized
Position adjustment, to realize persistently can be changed for valve stroke.
Eccentric axle assembly 9 according to an embodiment of the present invention is described below.
As Figure 1-Figure 4, eccentric axle assembly 9 is used for variable air valve lift range mechanism 100, and eccentric axle assembly 9 includes: mandrel
12, eccentric wheel 14, fastener 16.
Wherein, mandrel 12 is suitable for being connected with driving unit, and driving unit can drive mandrel 12 to do clockwise or counterclockwise
The rotation of both direction, driving unit can be control motor 10.
It is set in outside mandrel 12 to 14 adjustable angle of eccentric wheel, and eccentric wheel 14 and 12 clearance fit of mandrel, fastener 16
It is detachably connected with eccentric wheel 14 and mandrel 12, fastener 16 exists in this way for eccentric wheel 14 to be fixedly connected with mandrel 12
When 12 drived unit of mandrel drives, eccentric wheel 14 can be servo-actuated, and eccentric wheel 14 can be connected with regulating arm 8, be adjusted with driving
Arm 8 drives adjusting pin 3 to swing, to change the corresponding valve stroke of current eccentric wheel 14.
It is understood that loosening fasteners 16, can be such that eccentric wheel 14 does within the scope of certain angle on mandrel 12
Eccentric wheel 14 is turned to behind target position securable fastener 16 again, the fixation of eccentric wheel 14 Yu mandrel 12 can be realized by rotation
Connection.
By adjusting the corresponding eccentric wheel 14 of each cylinder valve 5, each cylinder valve stroke can be tuned into it is almost the same, solve by
Each cylinder valve stroke inconsistence problems of engine caused by the reasons such as components casting, processing, rigging error, and then reduce each
The inconsistent control bring to the exploitation of system control program, engine charge and burning of cylinder lift adversely affects.Further
Ground, the rotation by eccentric wheel 14 relative to mandrel 12 can change 100 valve of variable air valve lift range mechanism in a certain range
The limiting value of lift.
Bias axle assembly 9 according to an embodiment of the present invention, can be effectively reduced difficulty of processing and manufacturing cost, and each cylinder
Valve stroke can easily be accommodated, and can solve each cylinder valve stroke inconsistence problems caused by the reasons such as parts machining error, also
The limiting value of 100 valve stroke of variable air valve lift range mechanism can be changed in a certain range.
Variable air valve lift range mechanism 100 according to an embodiment of the present invention, valve stroke can easily be accommodated.
In some preferred embodiments of the invention, as shown in Figure 1 and Figure 4, eccentric axle assembly 9 further include: turbine, whirlpool
Wheel is pressed with 12 interference of mandrel, and turbine is suitable for being connected with driving unit, and driving unit can exist for control motor 10, worm gear 13
Minimum lift spacer pin 11a and maximum lift spacer pin 11b, minimum lift spacer pin 11a and most can be equipped on circumferencial direction
High-lift spacer pin 11b can form angle of eccentricity position-limit mechanism with the position limiting structure on cylinder cap, constrain lift range variable
The minimum lift and maximum lift of mechanism 100.Axial two end faces of worm gear 13 are thrust surface, install flute profile with cylinder cap worm gear 13
At eccentric shaft axial limiting.
Eccentric axle assembly 9 can also include: lift range sensor trundle 19, the cylindrical end mistake of lift range sensor trundle 19
It to be full of and is fitted in the end hole of central spindle, the flat mouth end of lift range sensor trundle 19 is used to install lift range sensor inductance element,
Lift range sensor inductance element is used to feed back angle of eccentricity to control unit.
In some preferred embodiments of the invention, as shown in figure 3, eccentric wheel 14 can have: off-centre operation section 14a and
Fastening section 14b, off-centre operation section 14a and fastening section 14b are connected along axial, and can be integrally formed.
Wherein, off-centre operation section 14a is suitable for being connected with the regulating arm 8 of valve 5, and fastening section 14b is equipped with adjustment hole 14d, tightly
Firmware 16 runs through adjustment hole 14d, and fastener 16 is fixedly connected with mandrel 12, and fastener 16 can be screw, can on mandrel 12
To be equipped with the threaded hole radially extended, fastener 16 is threadedly coupled through adjustment hole 14d and with threaded hole, by eccentric wheel 14
It is compressed with mandrel 12.
As shown in Figures 2 and 3, adjustment hole 14d can be strip, and adjustment hole 14d is circumferentially.Adjustment hole 14d
To adjust each cylinder intake side valve stroke.The use of the adjustment hole 14d of strip, so that 14 angle of eccentric wheel continuously may be used
It adjusts.
As shown in Figures 2 and 3, fastening section 14b can have polygonal crosssection, such as hexagonal cross-section, so just
Fastening section 14b is clamped in tooling and rotates fastening section 14b.
As shown in Figure 1-Figure 3, eccentric axle assembly 9 can also include: gasket 15, gasket 15 can be folded in fastener 16 with
Between fastening section 14b, and gasket 15 and fastener 16 with and fastening section 14b be respectively formed face contact, the head with screw of gasket 15
The corresponding surface in portion can be plane, and fastening section 14b can have arcwall face 14c, and adjustment hole 14d runs through arcwall face 14c, gasket
15 surface opposite with arcwall face 14c is arc, in this way, gasket 15 can be with assisted fasteners 16 by mandrel 12 and eccentric wheel 14
Locking, and the cooperation of the arcwall face 14c of the arc seal face and eccentric wheel 14 of gasket 15, are conducive to eccentric wheel 14 and mandrel 12 exists
Fixation can be tightened under all angles.
Preferably, as Figure 1-Figure 2, each fastening section 14b can have multiple arcs face 14c, multiple arcs face 14c
Axially spaced, each eccentric wheel 14 has multiple off-centre operation section 14a, and multiple off-centre operation section 14a are axially spaced.Such as
Each eccentric wheel 14 tool is equipped with fastening section 14b there are two off-centre operation section 14a among two off-centre operation section 14a, on fastening section 14b
Both ends close to two off-centre operation section 14a can be equipped with arcwall face 14c, in this way, eccentric wheel 14 and the connection of mandrel 12 are more firm
Gu and bearing distribution is more balanced.
As shown in Figure 1, eccentric wheel 14 can be to be multiple, multiple eccentric wheels 14 are axially spaced.For example eccentric wheel 14 can
Think four, four cylinders of corresponding four cylinder engine.
Eccentric axle assembly 9 further include: multiple bearing assemblies 17, multiple bearing assemblies 17 are with multiple eccentric wheels 14 along axial phase
Mutual interlaced arrangement, and the bearing assembly 17 between two neighboring eccentric wheel 14 is positioned by corresponding two eccentric wheels 14, is located at
The bearing assembly 17 of end is positioned by adjacent eccentric wheel 14 and retaining ring 18.Above-mentioned limit method takes full advantage of eccentric wheel
14, it is possible to reduce the number of part.Bearing assembly may include needle bearing.
As shown in Figure 1, one end of the separate eccentric wheel 14 of turbine can also be equipped with bearing assembly 17, which can
To be positioned by two retaining rings 18.
Fig. 5 is the stream of the valve stroke adjustment method of continuous variable valve lift mechanism according to an embodiment of the invention
Cheng Tu.As shown in figure 5, the valve stroke adjustment method of continuous variable valve lift mechanism according to an embodiment of the invention,
Include the following steps:
S501: the eccentric axle assembly (9) is driven to go to minimum lift position in lift debugging station.
Such as: the cylinder head assembly equipped with above-mentioned continuous variable valve lift mechanism is placed into valve stroke consistency tune
It tries in equipment (lift debugging station).
S502: after the completion of hydraulic tappet is oil-filled, valve opening and closing are driven, to detect the initial lifting curve of valve.
Such as: the control cam axle predetermined time, to drive valve opening and closing, and in the process, detection valve is initially risen
Journey curve.
In one embodiment of the invention, the predetermined time is 6 seconds.Specifically, main oil gallery fuel feeding, completes hydraulic tappet
It is oil-filled.Eccentric axle assembly turns to minimum lift position, cam under the control motor driven of continuous variable valve lift mechanism
Axis rotates 6 seconds, and (that is: valve is initial for driving valve opening and valve lift sensor record valve lift curve while closing
Lifting curve).
S503: initial valve stroke value is determined according to the initial lifting curve of valve.It, can in specific example of the invention
To take multiple crest values from the initial lifting curve of valve, and using the average value of multiple crest values as the initial valve liter
Journey value.
For 10, then valve stroke commissioning device takes middle position according to the initial lifting curve of valve of acquisition
10 crest values acquire average value as initial valve stroke value.
S504: the angle of eccentric wheel (14) is obtained according to initial valve stroke value, and calculates the angle of eccentric wheel (14)
Difference between standard angle.That is, the angle according to initial valve stroke value, where calculating eccentric wheel at this time
(that is: the angle of eccentric wheel (14)) then calculates the angle of this eccentric wheel (14) and the difference of point of theory (that is: standard angle)
Value.
S505: it is adjusted according to the difference between the angle and standard angle of eccentric wheel (14) and is set in mandrel (12) outside inclined
The angle of heart wheel (14).Tool Clamping eccentric cams first can be adjusted by eccentric wheel, then unclamp eccentric wheel briquetting bolt, it
Eccentric wheel position is adjusted afterwards, and adjustment amount is the difference between the angle and standard angle of eccentric wheel (14).It is tightened after having adjusted angle
Eccentric wheel briquetting bolt.
Specifically, being set in outside mandrel 12 to 14 adjustable angle of eccentric wheel, and eccentric wheel 14 and core in conjunction with Fig. 1-Fig. 4
12 clearance fit of axis, fastener 16 are detachably connected with eccentric wheel 14 and mandrel 12, fastener 16 be used for by eccentric wheel 14 with
Mandrel 12 is fixedly connected, and in this way when 12 drived unit of mandrel drives, eccentric wheel 14 can be servo-actuated, and eccentric wheel 14 can be with tune
Joint arm 8 is connected, to drive regulating arm 8 that adjusting pin 3 is driven to swing, to change the corresponding valve stroke of current eccentric wheel 14.
The valve stroke adjustment method of continuous variable valve lift mechanism according to an embodiment of the present invention, can be by valve liter
Journey value, which is simply, easily adjusted to close to theoretical value, reduces four cylinder part sizes by adjusting the position of every cylinder eccentric wheel
The difference of four cylinder gate lifts brought by difference, fit clearance difference.Improve the uneven band of each cylinder burning of engine
The noise that comes, vibration promote vehicle so that dynamic property, discharge in engine practical work process, oil consumption are relatively preferable
Usage experience.
Multiple eccentric wheels (14) angle adjust completion after, further includes: whether verify final valve stroke value
Meet pre-provisioning request；If it is, determining that the continuous variable valve lift mechanism is qualified；Otherwise, continuously may be used again to described
Air valve variation lift mechanisms carry out valve stroke debugging.
Specifically, verify whether final valve stroke value meets pre-provisioning request, comprising: it is pre- to control cam axle again
It fixes time, to drive the valve opening and closing, and in the process, detects the final lifting curve of the valve；According to institute
It states the final lifting curve of valve and determines final valve stroke value；According to final the valve stroke value and standard lift range value
Comparison result determines whether the continuous variable valve lift mechanism is qualified.
By taking the continuous variable valve lift mechanism with 4 eccentric wheels as an example, then when 4 eccentric wheels all debug completion
Afterwards, control cam axle 6 seconds again, valve lift sensor measures the valve stroke value of all valves, and with theoretical value ratio
Compared with simply and easily determining whether continuous variable valve lift mechanism is qualified according to comparison result, in this way, qualified product can
Cleaning assembly in next step is carried out, repeats to debug after underproof replacement of products roller rocker arms primary.
The valve stroke adjustment method of the continuous variable valve lift mechanism of the embodiment of the present invention, can be by valve stroke value
It simply, easily adjusts to close to theoretical value and it is poor to reduce four cylinder part sizes by adjusting the position of every cylinder eccentric wheel
Different, four cylinder gate lifts brought by fit clearance difference difference.Each cylinder burning of engine is improved unevenly to bring
Noise, vibration so that dynamic property, discharge in engine practical work process, oil consumption are relatively preferable promote vehicle
Usage experience.
Fig. 6 is the flow chart of the detection method of the continuous variable valve lift mechanism of the embodiment of the present invention.As shown in fig. 6,
And Fig. 7 is combined, the detection method of continuous variable valve lift mechanism according to an embodiment of the invention includes the following steps:
S601: after continuous variable valve lift mechanism completes packing, respectively to the continuous variable valve lift mechanism
It carries out lift debugging, carry out engine thermal testing, engine thermal starting test and engine cold-start test to engine.
S602: judge the self study of the self study of lift debugging, the self study of engine thermal testing, engine thermal starting test
Whether the self study with engine cold-start test is successful.
S603: if it is not, then testing the continuous variable valve lift mechanism with the presence or absence of failure, and carry out to failure part
Replacement.
Specifically, the motor and automatically controlled component for testing the continuous variable valve lift mechanism are with the presence or absence of failure；Such as
Fruit is then to replace corresponding failure part.
Further, when there are when failure for the continuous variable valve lift mechanism, further includes: measure the continuous variable
Torque under air valve lift range mechanism heat engine；And according to the torque and the first mark turn under the continuous variable valve lift mechanism heat engine
The comparison result analyzing failure cause of value.
Further, when there are when failure for the continuous variable valve lift mechanism, further includes: measurement is described continuously may be used
Torque under air valve variation lift mechanisms cold；And according to the torque and the second mark under the continuous variable valve lift mechanism cold
Turn the comparison result analyzing failure cause of value.
Specifically, as shown in fig. 7, the self study success of continuous variable valve lift mechanism, determines and continuously may be used
Can air valve variation lift mechanisms be normally carried out the continuously adjustable function of valve stroke.Pass through four steps on engine production line
Test the reliability and accuracy of continuous variable valve lift mechanism.Gas is carried out after the completion of continuous variable valve lift mechanism packing
Door lift debugging carries out a self study in the process, carries out a self study during engine thermal testing, engine thermal opens
Dynamic to carry out a self study, engine cold-start carries out a self study.In four self study test process, if there is any
One process self study failure, then carry out the malfunction elimination such as under type:
Control motor, circuit element whether failure；Mechanism torque and standard value compare under heat engine, cold state, if having
Part causes mechanism clamping stagnation.Erroneous parts are checked, continuous variable valve lift mechanism packing is carried out, replace failed part；Even
Continuous variable air valve lift range mechanism packing is completed, and the self study detection of engine is re-started, until success.
The detection method of the continuous variable valve lift mechanism of the embodiment of the present invention improves continuously variable valve lift machine
The reliability of structure self study, so that continuous variable valve lift mechanism can normal work in warm boot, Cold Start
Make.Furthermore, it is contemplated that having error in part thermal expansion and cold contraction effect and installation process, it is likely to result in mechanism clamping stagnation.Clamping stagnation will
It will cause continuous variable valve lift mechanism self study failure, therefore, self study is tested during test process contains heat examination,
The detection of self study when warm boot, cold starting, so that detection is more comprehensive, promote continuous variable valve lift mechanism can
By property.
As shown in figure 8, embodiment of the invention discloses a kind of detection system 800 of continuous variable valve lift mechanism,
It include: test module 810, judgment module 820 and detection module 830.
Wherein, test module 810 is used for after continuous variable valve lift mechanism completes packing, continuously may be used respectively to described
Air valve variation lift mechanisms carry out lift debugging, to engine carry out engine thermal testing, engine thermal starting test and engine it is cold
Starting test.Judgment module 820 is used to judge the self study of lift debugging, the self study of engine thermal testing, engine thermal starting
Whether the self study of the self study of test and engine cold-start test is successful.Detection module 830 is used in the lift tune
The self study of examination, the self study of engine thermal testing, engine thermal starting test self study and engine cold-start test from
When study is without all succeeding, the continuous variable valve lift mechanism is tested with the presence or absence of failure, and replace to failure part.
In one embodiment of the invention, the detection module 830 is used for: testing the continuously variable valve lift machine
The motor of structure and automatically controlled component whether there is failure；If it is, replacing corresponding failure part.
In one embodiment of the invention, the detection module 830 is also used in the continuously variable valve lift machine
There are torques when failure, measured under the continuous variable valve lift mechanism heat engine for structure；And according to the continuous variable valve
Torque and the first mark under lift mechanisms heat engine turn the comparison result analyzing failure cause of value.
In one embodiment of the invention, the detection module 830 is also used to measure the continuously variable valve lift
Torque under mechanism cold；And according to the comparison of torque and the second mark turn value under the continuous variable valve lift mechanism cold
Interpretation of result failure cause.
The detection system of the continuous variable valve lift mechanism of the embodiment of the present invention improves continuously variable valve lift machine
The reliability of structure self study, so that continuous variable valve lift mechanism can normal work in warm boot, Cold Start
Make.Furthermore, it is contemplated that having error in part thermal expansion and cold contraction effect and installation process, it is likely to result in mechanism clamping stagnation.Clamping stagnation will
It will cause continuous variable valve lift mechanism self study failure, therefore, self study is tested during test process contains heat examination,
The detection of self study when warm boot, cold starting, so that detection is more comprehensive, promote continuous variable valve lift mechanism can
By property.
It should be noted that the specific implementation side of the detection system of the continuous variable valve lift mechanism of the embodiment of the present invention
Formula is similar with the specific implementation of the detection method of the continuous variable valve lift mechanism of the embodiment of the present invention, specifically refers to
The description of method part is not repeated herein to reduce redundancy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of detection method of continuous variable valve lift mechanism, which is characterized in that the continuous variable valve lift mechanism
Including eccentric axle assembly (9), the bias axle assembly (9) includes mandrel (12) and eccentric wheel (14), and the mandrel (12) is suitable for
Be connected with driving unit, be set in the mandrel (12) outside to the adjustable angle of the eccentric wheel (14), and with the mandrel
(12) clearance fit, which comprises
After continuous variable valve lift mechanism completes packing, lift tune is carried out to the continuous variable valve lift mechanism respectively
Examination carries out engine thermal testing, engine thermal starting test and engine cold-start test to engine；
Judge the self study of lift debugging, the self study of engine thermal testing, the self study of engine thermal starting test and engine
Whether the self study for being cold-started test is successful；
If it is not, then testing the continuous variable valve lift mechanism with the presence or absence of failure, and failure part is replaced.
2. the detection method of continuous variable valve lift mechanism according to claim 1, which is characterized in that the test institute
Continuous variable valve lift mechanism is stated with the presence or absence of failure, and failure part is replaced, comprising:
The motor and automatically controlled component for testing the continuous variable valve lift mechanism are with the presence or absence of failure；
If it is, replacing corresponding failure part.
3. the detection method of continuous variable valve lift mechanism according to claim 1 or 2, which is characterized in that when described
There are when failure for continuous variable valve lift mechanism, further includes:
Measure the torque under the continuous variable valve lift mechanism heat engine；
And failure is analyzed according to the comparison result of torque and the first mark turn value under the continuous variable valve lift mechanism heat engine
Reason.
4. the detection method of continuous variable valve lift mechanism according to claim 1 or 2, which is characterized in that when described
There are when failure for continuous variable valve lift mechanism, further includes:
Measure the torque under the continuous variable valve lift mechanism cold；
And failure is analyzed according to the comparison result of torque and the second mark turn value under the continuous variable valve lift mechanism cold
Reason.
5. a kind of detection system of continuous variable valve lift mechanism, which is characterized in that the continuous variable valve lift mechanism
Including eccentric axle assembly (9), the bias axle assembly (9) includes mandrel (12) and eccentric wheel (14), and the mandrel (12) is suitable for
Be connected with driving unit, be set in the mandrel (12) outside to the adjustable angle of the eccentric wheel (14), and with the mandrel
(12) clearance fit, the system comprises:
Test module is used for after continuous variable valve lift mechanism completes packing, respectively to the continuously variable valve lift
Mechanism carries out lift debugging, carries out engine thermal testing, engine thermal starting test and engine cold-start test to engine；
Judgment module, for judging that the self study of lift debugging, the self study of engine thermal testing, engine thermal start oneself tested
Whether the self study of study and engine cold-start test is successful；
Detection module, self study, the engine thermal starting of self study, engine thermal testing for debugging in the lift are tested
When the self study of self study and engine cold-start test is without all succeeding, whether the continuous variable valve lift mechanism is tested
There are failures, and replace to failure part.
6. the detection system of continuous variable valve lift mechanism according to claim 5, which is characterized in that the detection mould
Block is used for:
The motor and automatically controlled component for testing the continuous variable valve lift mechanism are with the presence or absence of failure；
If it is, replacing corresponding failure part.
7. the detection system of continuous variable valve lift mechanism according to claim 5 or 6, which is characterized in that the inspection
Module is surveyed to be also used to measure the continuous variable valve lift mechanism there are when failure in the continuous variable valve lift mechanism
Torque under heat engine；And according to the comparison result of torque and the first mark turn value under the continuous variable valve lift mechanism heat engine
Analyzing failure cause.
8. the detection system of continuous variable valve lift mechanism according to claim 5 or 6, which is characterized in that the inspection
It surveys module and is also used to measure the torque under the continuous variable valve lift mechanism cold；And according to the continuous variable valve liter
Torque and the second mark under journey mechanism cold turn the comparison result analyzing failure cause of value.
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| CN109030006B (en) | 2021-03-19 |
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