CN108106853B - A kind of electronic type variable valve timing system device for testing functions and its test method - Google Patents
A kind of electronic type variable valve timing system device for testing functions and its test method Download PDFInfo
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- CN108106853B CN108106853B CN201711373710.9A CN201711373710A CN108106853B CN 108106853 B CN108106853 B CN 108106853B CN 201711373710 A CN201711373710 A CN 201711373710A CN 108106853 B CN108106853 B CN 108106853B
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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
- G01M15/02—Details or accessories of testing apparatus
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Abstract
The present invention provides a kind of electronic type variable valve timing system device for testing functions applied to variable valve timing system the field of test technology, the driving motor (2) of the electronic type variable valve timing system device for testing functions is connect with engine crankshaft (5), camshaft speed sensor (11) is connect with acquisition control module (9), motor (6) are adjusted to connect with motor control component (8), motor control component (8) is connect with acquisition control module (9), acquisition control module (9) is connect with rotary speed torque sensor (10), driving motor (2) is connect with acquisition control module (9), electronic type variable valve timing system device for testing functions of the invention and performance test methods, it being capable of accurate quick simulation electronic formula variable valve timing system use actual condition in engine, to comment Sentence timing system properties of product, facilitates performance optimization.
Description
Technical field
The invention belongs to the field of test technology of variable valve timing system, are to be related to a kind of electronic type more specifically
Variable valve timing system device for testing functions.
Background technique
Variable valve timing system (VVT) can realize timing controlled to the opening and closing of engine import/exhaust door, improve engine
Output torque and power improve fuel economy, discharge are effectively reduced.But conventional hydraulic formula phase regulator needs are being established
Engine valve timing could be adjusted after certain unlock oil pressure, it is meant that engine is in idling or pole low temperature condition
Under, fluid pressure type VVT is idle；Conventional hydraulic Formula V VT system adjusts limited angle, and usual maximal regulated angle is convex at 35 degree
Take turns Shaft angle.Electronic type variable valve timing system (EVVT) product is executed by DC brushless motor, controller and The gear deceleration
Mechanism composition.Electronic type VVT system drives cam axle by gear-box by direct current generator, does not depend on the machine oil of engine
Oil pressure, as long as power supply can participate in adjusting, and angular adjustment is freely adjustable, limits, can be substantially improved without angular range
Control rapid to air valve angle and stable can be achieved under each operating condition of engine for response when low engine speeds.But it is existing
There is in technology the but not no performance testing device about electronic type variable valve timing system, leads to not reliable quickly to electricity
Minor variable valve timing system is tested for the property.
Summary of the invention
The technical problems to be solved by the present invention are: it is simple to provide a kind of structure, can accurate quick simulation electronic formula can
Air valve variation timing system is using the actual condition in engine, to judge electronic type variable valve timing system properties of product,
Facilitate properties of product optimization, reduces performance test cost, meet electronic type variable valve timing system mass production comprehensively
The electronic type variable valve timing system device for testing functions of demand.
Solve the problems, such as techniques discussed above, the technical scheme adopted by the invention is as follows:
The present invention is a kind of electronic type variable valve timing system device for testing functions, and the electronic type changeable air valve is just
When System Functional Test device include device pedestal, on the device pedestal be arranged driving motor, engine positioning element, hair
Motivation is configured to the structure being fixedly mounted on engine positioning element, and the driving motor and engine crankshaft connect
It connects, camshaft speed sensor is also set up on engine, camshaft speed sensor is connect with acquisition control module, adjusts motor
It is connect with motor control component, motor control component is connect with acquisition control module, acquisition control module and revolving speed torque sensing
Device connection, rotary speed torque sensor are configured to the structure that acquisition adjusts motor speed signal and torque signal, driving motor
It is connect with acquisition control module.
The driving motor is connect by shaft coupling with engine crankshaft, is adjusted and is led between motor and engine cam
Speed reducer connection is crossed, the rotary speed torque sensor setting in speed reducer and is adjusted between motor.
The acquisition control module is configured to acquire the revolving speed for adjusting motor in real time by rotary speed torque sensor
The structure of signal and torque signal, the acquisition control module are configured to acquire in real time by camshaft speed sensor
The structure of the tach signal of engine cam, acquisition control module are configured to the engine cam that will be acquired in real time
Tach signal converts is converted into the structures of camshaft phase angular values, and acquisition control module is configured to acquire in real time
The structure of the tach signal conversion conversion crank phase angle number value of engine crankshaft.Camshaft phase angle and crankshaft position
The difference of degree, as valve-control angle.In acquisition control module pid algorithm be configured to according to valve-control target angle and
The deviation of valve actual angle calculates the structure for adjusting the speed controling signal of motor, and acquisition control module is configured to control
System adjusts the structure that motor carries out acceleration or deceleration movement.
The electronic type variable valve timing system device for testing functions further includes engine operating temperature control cabinet, temperature
Spend sensor, engine operating temperature control cabinet be configured to control engine environment temperature -40 °~150 ° ranges it
The structure being inside adjusted, temperature sensor are connect with acquisition control module, and acquisition control module is configured to according to temperature
The structure of the camshaft phase angular values of the temperature signal amendment of the sensor feedback variable valve timing system.
The speed reducer is planetary gear construction, and speed reducer is mounted on engine cylinder cover lateral location, and speed reducer is too
Sun wheel is fixedly connected with engine cam, and the crank wheel of the belt wheel and engine crankshaft that are arranged on the outer ring of speed reducer is by just
When belt connect.
Described engine cam one end is connect with speed reducer, and camshaft speed sensor includes that coding disk and Hall pass
Camshaft speed sensor is arranged in sensor, the engine cam other end, and camshaft speed sensor is configured to adopt in real time
Collect engine cam tach signal, and by the tach signal Real-time Feedback to the structure of acquisition control module.
The adjusting motor and motor control component is mounted on fixed bracket, and fixed bracket is mounted on engine side
Face, the shaft for adjusting motor are configured to the structure connecting across fixed bracket with rotary speed torque sensor.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes adjusting motor speed stability test method.
The adjusting motor speed stability test method testing step are as follows: 1) acquisition control module setting driving electricity
The initial speed of machine is speed1 rpm, and driving motor drives engine, and speed reducer and adjusting motor are rotated with speed1 rpm,
Purpose is after simulated engine is lighted a fire, and electronic type variable valve timing system does not rotate and trailing operating condition actively；2) when t1
It carves, acquisition control module sets the rotating speed of target for adjusting motor as speed2 rpm, and acquisition control module acquires adjusting electricity in real time
The tach signal of machine is simultaneously fitted to speed curves；3) acquisition control module calculates the stabilization for adjusting motor speed according to speed curves
Range shows electronic type variable valve timing when adjusting the fluctuation of motor actual speed in setting ± 1% range of target angle numerical value
The revolving speed that motor is adjusted in system is in stability range；4) when acquisition control module calculates stabilization of speed further according to speed curves
Between, calculate the stabilization period formula for adjusting motor are as follows: the revolving speed for adjusting motor is initially located in equal to the revolving speed for adjusting motor
The time t5 of stability range subtracts acquisition control module and issues the time t1 that setting adjusts motor rotating speed of target speed2 signal, adjusts
Stabilization period≤the 100ms for saving motor shows the speed stability that motor is adjusted in electronic type variable valve timing system
It meets the requirements, adjusts the stabilization period > 100ms of motor, show that the speed stability for adjusting motor is undesirable.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes engine valve phase angle stability test method.
The engine valve phase angle stability test method testing step are as follows: 1) acquisition control module is set
The initial speed of driving motor is speed1rpm, and driving motor drives engine, and speed reducer and adjusting motor are with speed1 rpm
Rotation, it is therefore an objective to which after simulated engine igniting, electronic type variable valve timing system is not rotated and trailing operating condition actively.This
Under operating condition, camshaft phase angle and crank phase angle difference are exactly engine valve phase angle, are denoted as Angle1；2)t1
Moment, acquisition control module set engine valve phase object angle as Angle2, and pid algorithm can be according to gas in acquisition module
The deviation of door phase object angle and actual angle calculates motor speed control signal, adjusting motor is made to be accelerated or be subtracted
Quick-action is made, final to realize valve-control angle stabilization in the fluctuation range that setting value allows.Acquisition control module can adopt in real time
Collect camshaft and crank phase angle difference, i.e. engine valve phase angle, and is fitted to engine valve phase angle and writes music
Line；3) acquisition control module calculates the stability range of valve-control angle according to engine valve phase angle curve, works as valve
Phase angle fluctuation shows that engine valve phase angle is in and stablizes model when setting in ± 1% range of target angle numerical value
It encloses；4) acquisition control module calculates the stabilization time of valve-control angle further according to engine valve phase angle curve, calculates
Engine valve phase angle stablizes time formula are as follows: engine valve phase angle stablizes the time equal to engine valve phase
The time t5 that angle is initially located in stability range subtracts acquisition control module and issues setting engine valve phase angle Angle2 letter
Number time t1, engine valve phase angle stablize time≤200ms, show electronic type variable valve timing system stability
It meets the requirements, engine valve phase angle stablizes time > 200mS, shows electronic type variable valve timing system stability not
It meets the requirements.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes adjusting motor speed responsiveness test method.
The testing procedure of the adjusting motor speed responsiveness test method are as follows: 1) acquisition control module setting driving electricity
The initial speed of machine is speed3rpm, and driving motor drives engine, and speed reducer and adjusting motor are rotated with speed3, purpose
It is after simulated engine igniting, electronic type variable valve timing system does not rotate and trailing operating condition actively；2) the t1 moment adopts
Integrate control module and set the rotating speed of target for adjusting motor as speed4rpm, acquisition adjusts motor to acquisition control module (9) in real time
Tach signal is simultaneously fitted to adjusting motor speed curve；3) acquisition control module is calculated according to speed curves and is adjusted on motor speed
It rises the response time, calculating revolving speed rises response time formula are as follows: after revolving speed rises the response time equal to motor speed promotion is adjusted
The time t2 for reaching step rotating speed of target speed4 rpm for the first time subtracts acquisition control module and issues setting rotating speed of target
The time t1 of Speed4 signal, revolving speed rise response time≤100mS, show to adjust electricity in electronic type variable valve timing system
The responsiveness of machine meets the requirements, and revolving speed rises response time > 100mS, shows to adjust electricity in electronic type variable valve timing system
The responsiveness of machine is undesirable；4) the t3 moment, acquisition control module set adjust motor rotating speed of target as speed3rpm,
Acquisition control module, which acquires tach signal in real time and is fitted to, adjusts motor speed curve；5) acquisition control module is according to revolving speed song
Line computation adjusts motor speed and declines the response time, calculates revolving speed and declines response time formula are as follows: revolving speed declines response time etc.
The time t4 for reaching step rotating speed of target speed3 for the first time after adjusting motor speed decline subtracts acquisition control module and issues
The time t3 of rotating speed of target Speed3 signal is set, revolving speed declines response time≤100mS, shows electronic type variable valve timing
The responsiveness that motor is adjusted in system meets the requirements, and revolving speed declines response time > 100mS, shows electronic type variable valve timing
The responsiveness that motor is adjusted in system is undesirable.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes engine valve phase angle responsiveness test method.
The testing procedure of the engine valve phase angle responsiveness test method are as follows: 1) acquisition control module is set
The initial speed of driving motor is speed3 rpm, and driving motor drives engine, and speed reducer and adjusting motor are with speed3
Rpm rotation, it is therefore an objective to which after simulated engine igniting, electronic type variable valve timing system is not rotated and trailing work actively
Condition；Camshaft and crank phase angle difference, i.e. engine valve phase angle, are denoted as Angle3；2) t1 moment, acquisition control
Module sets the target angle of engine valve phase angle as Angle4, and pid algorithm can be according to valve-control in acquisition module
The deviation of target angle and actual angle calculates the speed controling signal for adjusting motor, and adjusting motor is made to be accelerated or be subtracted
Quick-action is made, final to realize valve-control angle stabilization in the fluctuation range that setting value allows.Acquisition control module acquires in real time
The angle signal of engine valve phase angle is simultaneously fitted to curve；3) acquisition control module calculates engine according to angle curve
Valve-control angle rises the response time, calculates valve-control angle and rises response time formula are as follows: valve-control angle rises
The time t2 that response time reaches step target angle Angle4 equal to valve-control angle for the first time subtracts acquisition control module
The time t1 of setting target angle Angle4 signal is issued, valve-control angle rises response time≤100mS, shows electronic type
The responsiveness of variable valve timing system meets the requirements, and valve-control angle rises response time > 100mS, shows that electronic type can
Responsiveness in air valve variation timing system is undesirable；4) t3 moment, acquisition control module set engine valve phase angle
The target angle of degree is Angle3, in acquisition module pid algorithm can according to the deviation of valve-control target angle and actual angle,
It calculates and adjusts motor speed control signal, make to adjust motor progress acceleration or deceleration movement, it is final to realize valve-control angle
It is stable in the fluctuation range of setting value permission.Acquisition control module acquires the angle signal of engine valve phase angle in real time
And it is fitted to curve；5) acquisition control module calculates engine valve phase angle decline response time, hair according to angle curve
Motivation valve-control angle declines response time calculation formula are as follows: the engine valve phase angle response time is equal to engine air
The time t4 for reaching target angle Angle3 after door phase angle decline for the first time subtracts acquisition control module and issues setting target
The time t3 of angle A ngle3 signal, engine valve phase angle decline response time≤200mS, show that electronic type can be changed gas
Door timing system responsiveness meets the requirements, and engine valve phase angle declines response time > 200mS, shows that electronic type is variable
Valve timing system responsiveness is undesirable.
Using technical solution of the present invention, can obtain it is below the utility model has the advantages that
Electronic type variable valve timing system device for testing functions and performance test methods of the present invention, in needs pair
When electronic type variable valve timing system is tested for the property, electronic type variable valve timing system to be tested will first be needed to install
It is fixed on engine positioning element onto engine, then by engine, then connect the crankshaft of engine with driving motor.
When being tested for the property, driving motor start and stop and driving motor rotation speed change are controlled by acquisition control module.In this way, engine
Crankshaft rotates under driving motor drive, and crankshaft is by belt and engine cam axis connection, thus in engine crankshaft rotation
When, engine cam also can rotate.The tach signal for the engine cam that acquisition control module acquires in real time, which converts, to be converted
For the tach signal conversion conversion for the engine crankshaft that the structure of camshaft phase angular values, acquisition control module acquire in real time
The structure of crank phase angle number value.The difference of camshaft phase angle and crank phase angle, as valve-control angle.Acquisition
Pid algorithm in module can calculate according to the deviation of valve-control target angle and valve actual angle and adjust turning for motor
Speed control signal makes to adjust motor progress acceleration or deceleration movement, final to realize that valve-control angle stabilization allows in setting value
Fluctuation range in.Carrying out engine peed stable and response test and valve-control angle stability and response test
When, driving motor drives engine rotation always, adjusts driving motor revolving speed as desired by acquisition control module, realizes mould
Quasi- engine operating condition and electronic type variable valve timing system actual condition, efficiently and accurately complete performance test, reduce performance and survey
Cost is tried, testing efficiency is improved.Electronic type variable valve timing system device for testing functions of the invention and performance test methods,
Control is simple, can accurate quick simulation electronic formula variable valve timing system using the actual condition in engine, to comment
Sentence electronic type variable valve timing system properties of product, facilitate properties of product optimization, reduces performance test cost, meet comprehensively
Electronic type variable valve timing system mass production demand.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is the overall structure diagram of electronic type variable valve timing system device for testing functions of the invention；
Fig. 2 is the partial structural diagram of electronic type variable valve timing system device for testing functions of the invention；
Fig. 3 is that motor speed stability is adjusted in electronic type variable valve timing system device for testing functions of the invention
Curve synoptic diagram when can test；
Fig. 4 is that motor speed responsiveness is adjusted in electronic type variable valve timing system device for testing functions of the invention
Curve synoptic diagram when can test；
Fig. 5 is the schematic diagram of electronic type variable valve timing system device for testing functions of the invention；
Fig. 6 is that electronic type variable valve timing system device for testing functions of the invention carries out valve-control angle stability
Curve synoptic diagram when can test；
Fig. 7 is that electronic type variable valve timing system device for testing functions of the invention carries out valve-control angular response
Curve synoptic diagram when can test；
Attached drawing acceptance of the bid note is respectively as follows: 1, device pedestal；2, driving motor；3, engine positioning element；4, engine；5, it sends out
Motivation crankshaft；6, motor is adjusted；7, engine cam；8, motor control component；9, acquisition control module；10, revolving speed torque
Sensor；11, camshaft speed sensor；12, speed reducer；13, engine operating temperature control cabinet；14, temperature sensor；
15, shaft coupling；16, coding disk；17, Hall sensor；18, bracket shaft coupling.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention
The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further
Detailed description:
As shown in 1~attached drawing of attached drawing 7, the present invention is a kind of electronic type variable valve timing system device for testing functions, institute
The electronic type variable valve timing system device for testing functions stated includes device pedestal 1, and driving is arranged on the device pedestal 1
Motor 2, engine positioning element 3, engine 4 is configured to the structure being fixedly mounted on engine positioning element 3, described
Driving motor 2 connect with engine crankshaft 5, also set up camshaft speed sensor 11 on engine 4, camshaft speed sensing
Device 11 is connect with acquisition control module 9, is adjusted motor 6 and is connect with motor control component 8, motor control component 8 and acquisition control
Module 9 connects, and acquisition control module 9 is connect with rotary speed torque sensor 10, and rotary speed torque sensor 10 is configured to acquire
The structure of motor 6 tach signal and torque signal is adjusted, driving motor 2 is connect with acquisition control module 9.
Above structure will first need to be tested when needing to be tested for the property electronic type variable valve timing system
Electronic type variable valve timing system is installed on engine, then engine is fixed on engine positioning element, then will
The crankshaft of engine is connect with driving motor.When being tested for the property, by acquisition control module 9 control driving motor start and stop and
Driving motor rotation speed change.In this way, engine crankshaft rotates under driving motor drive, crankshaft passes through belt and engine cam
Axis connection, to which in engine crankshaft rotation, engine cam also be can rotate, and acquisition control module 9 is configured to
Convert the tach signal conversion of the engine cam acquired in real time to the structure of camshaft phase angular values, acquisition control
Module 9 is configured to the knot of the tach signal conversion conversion crank phase angle number value for the engine crankshaft that will be acquired in real time
Structure.Pid algorithm is configured to the drift gage according to valve-control target angle and valve actual angle in acquisition control module 9
The structure for adjusting the speed controling signal of motor 6 is calculated, acquisition control module 9 is configured to control and regulation motor 6 and is added
The structure of speed or speed-down action.Above structure is carrying out engine peed stable and response test and valve-control angle
When stability and response test, driving motor 6 drives engine rotation always, adjusts as desired by acquisition control module 9
Driving motor revolving speed realizes that simulated engine operating condition and electronic type variable valve timing system actual condition, efficiently and accurately are completed
Performance test reduces performance test cost, improves testing efficiency.Electronic type variable valve timing system functional test of the invention
Device, structure is simple, can accurate quick simulation electronic formula variable valve timing system using actual condition in engine,
To judge electronic type variable valve timing system properties of product, facilitates properties of product optimization, reduce performance test cost, comprehensively
Meet electronic type variable valve timing system mass production demand.
The driving motor 2 is connect by shaft coupling 15 with engine crankshaft 5, and motor 6 and engine cam 7 are adjusted
Between connected by speed reducer 12, the setting of rotary speed torque sensor 10 in speed reducer 12 and is adjusted between motor 6.It is above-mentioned
Structure, shaft coupling realize the flexible connection of driving motor and engine crankshaft, to realize driving power transmitting, it is ensured that engine
Reliable start and stop and rotation.And the setting of speed reducer, the rotation of motor 6 is controlled to adjust in acquisition control module 9 and camshaft is driven to limit
When the variation of position, the high revolving speed for adjusting motor 6 is reduced to the slow-speed of revolution, meets and adjusts the reality that motor 6 adjusts camshaft phase variation
Demand, convenient and reliable completion performance test.
The acquisition control module 9 is configured to through the motor 6 of acquisition adjusting in real time of rotary speed torque sensor 10
The structure of tach signal and torque signal, acquisition control module 9 are configured to adopt in real time by camshaft speed sensor 11
Collect the structure of the tach signal of engine cam 7.Acquisition control module 9 is configured to the engine cam that will be acquired in real time
The tach signal conversion of axis is converted into the structure of camshaft phase angular values, and acquisition control module 9 is configured to will be real-time
The structure of the tach signal conversion conversion crank phase angle number value of the engine crankshaft 5 of acquisition.Camshaft phase angle and song
The difference of axis phase angle, as valve-control angle.Pid algorithm in acquisition module 9 is configured to according to valve-control mesh
The deviation for marking angle and valve actual angle calculates the speed controling signal for adjusting motor 6, accelerates adjusting motor 6
Or speed-down action, it is final to realize valve-control angle stabilization in the fluctuation range that setting value allows.Acquisition control module 9 is simulated
Engine ECU, for controlling driving motor and adjusting motor 6, when driving motor drives engine rotation, changeable air valve is just
When system can effectively simulated engine operating condition be tested for the property.
The electronic type variable valve timing system device for testing functions further include engine operating temperature control cabinet 13,
Temperature sensor 14, engine operating temperature control cabinet 13 are configured to the temperature of control engine environment at -40 ° -150 °
Within the scope of the structure that is adjusted, temperature sensor 14 connect with acquisition control module 9, and acquisition control module 9 is arranged to
The camshaft phase angle number of enough temperature signal amendments fed back according to temperature sensor 14 variable valve timing system
The structure of value.Above structure, in the performance test, in order to which simulated engine and electronic type variable valve timing system be not
It works under synthermal situation, engine operating temperature control cabinet 13 is set, motor 6 will be adjusted and motor control component 8 is located at hair
Temperature letter in motivation operating temperature control cabinet 13, and in temperature sensor real-time monitoring engine operating temperature control cabinet 13
Number, and temperature signal is passed into acquisition control module 9, to adjust 6 rotational angle of motor as acquisition control module 9
And the amendment numerical value of rotation direction improves electronic type variable valve timing system to realize test ambient temperature closed-loop control
Performance test accuracy.
The speed reducer 12 is planetary gear construction, and speed reducer 12 is mounted on 4 cylinder cap lateral location of engine, speed reducer
12 sun gear is fixedly connected with engine cam 7, the song of the belt wheel and engine crankshaft 5 that are arranged on the outer ring of speed reducer 12
Axis wheel is connected by Timing Belt.The high revolving speed for adjusting motor 6 effectively can be reduced to the slow-speed of revolution, mentioned by above structure, speed reducer
High output torque meets and adjusts the actual demand that motor 6 adjusts camshaft phase variation.And speed reducer 12 is planetary gear construction
Power transmitting is steady.
Described 7 one end of engine cam is connect with speed reducer 12, and camshaft speed sensor 11 includes coding disk 16
With Hall sensor 17, camshaft speed sensor 11 is arranged in 7 other end of engine cam, and camshaft speed sensor 11 is set
7 tach signal of engine cam can be acquired in real time by being set to, and by the tach signal Real-time Feedback to acquisition control module 9
Structure.In this way, when driving motor drives the engine crankshaft rotation of engine, engine that acquisition control module 9 acquires in real time
The tach signal conversion of camshaft is converted into camshaft phase angle.Pid algorithm in acquisition control module 9 is configured to root
According to the deviation of valve-control target angle and valve actual angle, the speed controling signal for adjusting motor is calculated, makes to adjust electricity
Machine 6 carries out acceleration or deceleration movement, final to realize valve-control angle stabilization in the fluctuation range that setting value allows
The adjusting motor 6 and motor control component 8 is mounted on fixed bracket, and fixed bracket is mounted on engine 4
Side, the shaft for adjusting motor 6 are configured to the structure connecting across fixed bracket with rotary speed torque sensor 10.
The invention further relates to a kind of step is simple, can accurate quick simulation electronic formula variable valve timing system use sending out
Actual condition when motivation facilitates properties of product optimization, reduces to judge electronic type variable valve timing system properties of product
Electronic type variable valve timing system performance testing cost meets electronic type variable valve timing system mass production need comprehensively
The electronic type variable valve timing system function test method asked.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes adjusting motor speed stability test method.
The adjusting motor speed stability test method testing step are as follows: 1) acquisition control module setting driving electricity
The initial speed of machine is speed1 rpm, and driving motor drives engine, and speed reducer and adjusting motor are rotated with speed1 rpm,
Purpose is after simulated engine is lighted a fire, and electronic type variable valve timing system does not rotate and trailing operating condition actively；2) when t1
It carves, acquisition control module sets the rotating speed of target for adjusting motor as speed2 rpm, and acquisition control module acquires adjusting electricity in real time
The tach signal of machine is simultaneously fitted to speed curves；3) acquisition control module calculates the stabilization for adjusting motor speed according to speed curves
Range shows electronic type variable valve timing when adjusting the fluctuation of motor actual speed in setting ± 1% range of target angle numerical value
The revolving speed that motor is adjusted in system is in stability range, and acquisition control module calculates stabilization period further according to speed curves,
Calculate the stabilization period formula for adjusting motor are as follows: the revolving speed for adjusting motor is initially located in stabilization equal to the revolving speed for adjusting motor
The time t5 of range subtracts acquisition control module and issues the time t1 that setting adjusts motor rotating speed of target speed2 signal, adjusts electricity
Stabilization period≤100ms of machine shows that the speed stability that motor is adjusted in electronic type variable valve timing system meets
It is required that adjusting the stabilization period > 100ms of motor, show that the speed stability for adjusting motor is undesirable.
The present invention relates to a kind of electronic type variable valve timing system function test method, the electronic type changeable air valve
Timing system function test method includes engine valve phase angle stability test method.
The engine valve phase angle stability test method testing step are as follows: 1) acquisition control module is set
The initial speed of driving motor is speed1rpm, and driving motor drives engine, and speed reducer and adjusting motor are with speed1 rpm
Rotation, it is therefore an objective to which after simulated engine igniting, electronic type variable valve timing system is not rotated and trailing operating condition actively.This
Under operating condition, camshaft phase angle and crank phase angle difference are exactly engine valve phase angle, are denoted as Angle1；2)t1
Moment, acquisition control module set engine valve phase object angle as Angle2, and pid algorithm can be according to gas in acquisition module
The deviation of door phase object angle and actual angle calculates motor speed control signal, adjusting motor is made to be accelerated or be subtracted
Quick-action is made, final to realize valve-control angle stabilization in the fluctuation range that setting value allows.Acquisition control module can adopt in real time
Collect camshaft and crank phase angle difference, i.e. engine valve phase angle, and is fitted to engine valve phase angle and writes music
Line；3) acquisition control module calculates the stability range of valve-control angle according to engine valve phase angle curve, works as valve
Phase angle fluctuation shows that engine valve phase angle is in and stablizes model when setting in ± 1% range of target angle numerical value
It encloses；4) acquisition control module calculates the stabilization time of valve-control angle further according to engine valve phase angle curve, calculates
Engine valve phase angle stablizes time formula are as follows: engine valve phase angle stablizes the time equal to engine valve phase
The time t5 that angle is initially located in stability range subtracts acquisition control module and issues setting engine valve phase angle Angle2 letter
Number time t1, engine valve phase angle stablize time≤200ms, show electronic type variable valve timing system stability
It meets the requirements, engine valve phase angle stablizes time > 200mS, shows electronic type variable valve timing system stability not
It meets the requirements.
Electronic type variable valve timing system device for testing functions and performance test methods of the present invention, in needs pair
When electronic type variable valve timing system is tested for the property, electronic type variable valve timing system to be tested will first be needed to install
It is fixed on engine positioning element onto engine, then by engine, then connect the crankshaft of engine with driving motor.
When being tested for the property, driving motor start and stop and driving motor rotation speed change are controlled by acquisition control module.In this way, engine
Crankshaft rotates under driving motor drive, and crankshaft is by belt and engine cam axis connection, thus in engine crankshaft rotation
When, engine cam also can rotate.The tach signal for the engine cam that acquisition control module acquires in real time, which converts, to be converted
For the tach signal conversion conversion for the engine crankshaft that the structure of camshaft phase angular values, acquisition control module acquire in real time
The structure of crank phase angle number value.The difference of camshaft phase angle and crank phase angle, as valve-control angle.Acquisition
Pid algorithm in module can calculate according to the deviation of valve-control target angle and valve actual angle and adjust turning for motor
Speed control signal makes to adjust motor progress acceleration or deceleration movement, final to realize that valve-control angle stabilization allows in setting value
Fluctuation range in.Carrying out engine peed stable and response test and valve-control angle stability and response test
When, driving motor drives engine rotation always, adjusts driving motor revolving speed as desired by acquisition control module, realizes mould
Quasi- engine operating condition and electronic type variable valve timing system actual condition, efficiently and accurately complete performance test, reduce performance and survey
Cost is tried, testing efficiency is improved.Electronic type variable valve timing system device for testing functions of the invention and performance test methods,
Control is simple, can accurate quick simulation electronic formula variable valve timing system using the actual condition in engine, to comment
Sentence electronic type variable valve timing system properties of product, facilitate properties of product optimization, reduces performance test cost, meet comprehensively
Electronic type variable valve timing system mass production demand.
Above in conjunction with attached drawing, an exemplary description of the invention, it is clear that concrete implementation of the present invention is not by above-mentioned
The limitation of mode, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved by this
The conception and technical scheme of invention directly apply to other occasions, are within the scope of the invention.
Claims (9)
1. a kind of electronic type variable valve timing system function test method, the electronic type variable valve timing system function
Test method uses electronic type variable valve timing system device for testing functions, the electronic type variable valve timing system function
Energy test device includes device pedestal (1), and driving motor (2), engine positioning element are arranged on the device pedestal (1)
(3), engine (4) is configured to the structure being fixedly mounted on engine positioning element (3), the driving motor (2)
It is connect with engine crankshaft (5), camshaft speed sensor (11), camshaft speed sensor is also set up on engine (4)
(11) it is connect with acquisition control module (9), adjusts motor (6) and connect with motor control component (8), the motor control component
(8) it is connect with acquisition control module (9), acquisition control module (9) is connect with rotary speed torque sensor (10), revolving speed torque sensing
Device (10) be configured to acquisition adjust motor (6) tach signal and torque signal structure, the driving motor (2) with adopt
Collect control module (9) connection；
It is characterized by: the electronic type variable valve timing system function test method includes adjusting motor speed stability
Test method, the adjusting motor speed stability test method testing step are as follows: 1) acquisition control module (9) setting is driven
The initial speed of dynamic motor (2) is speed1rpm, and driving motor (2) drives engine (4), speed reducer (12) and adjusting motor
(6) it is rotated with speed1rpm, it is therefore an objective to which after simulated engine (4) igniting, electronic type variable valve timing system is not rotated actively
And trailing operating condition；2) the t1 moment, acquisition control module (9) set adjust motor (6) rotating speed of target as speed2rpm,
Acquisition control module (9) acquisition in real time adjusts the tach signal of motor (6) and is fitted to speed curves；3) acquisition control module
(9) stability range for adjusting motor (6) revolving speed is calculated according to speed curves, is being set when adjusting the fluctuation of motor (6) actual speed
± 1% range of target angle numerical value shows that the revolving speed that motor is adjusted in electronic type variable valve timing system is in stability range；
4) acquisition control module (9) calculates stabilization period further according to speed curves, calculates the stabilization period public affairs for adjusting motor
Formula are as follows: the time t5 that the revolving speed for adjusting motor is initially located in stability range equal to the revolving speed for adjusting motor subtracts acquisition control module
(9) issue setting adjust motor (6) rotating speed of target speed2 signal time t1, adjust motor (6) stabilization period≤
100ms shows that the speed stability for adjusting motor (6) in electronic type variable valve timing system meets the requirements, adjusts motor (6)
Stabilization period > 100ms, show adjust motor (6) speed stability it is undesirable.
2. a kind of electronic type variable valve timing system function test method, the electronic type variable valve timing system function
Test method uses electronic type variable valve timing system device for testing functions, the electronic type variable valve timing system function
Energy test device includes device pedestal (1), and driving motor (2), engine positioning element are arranged on the device pedestal (1)
(3), engine (4) is configured to the structure being fixedly mounted on engine positioning element (3), the driving motor (2)
It is connect with engine crankshaft (5), camshaft speed sensor (11), camshaft speed sensor is also set up on engine (4)
(11) it is connect with acquisition control module (9), adjusts motor (6) and connect with motor control component (8), the motor control component
(8) it is connect with acquisition control module (9), acquisition control module (9) is connect with rotary speed torque sensor (10), revolving speed torque sensing
Device (10) be configured to acquisition adjust motor (6) tach signal and torque signal structure, the driving motor (2) with adopt
Collect control module (9) connection；
It is characterized by: the electronic type variable valve timing system function test method includes engine valve phase angle
Stability test method, the engine valve phase angle stability test method testing step are as follows: 1) acquisition control
Module (9) sets the initial speed of driving motor (2) as speed1rpm, and driving motor (2) drives engine (4) rotation, slows down
Machine (12) and adjusting motor (6) are rotated with speed1rpm, it is therefore an objective to which after simulated engine (4) igniting, electronic type changeable air valve is just
When system do not rotate and trailing operating condition actively；Under this operating condition, camshaft phase angle and crank phase angle difference are exactly
Engine valve phase angle, is denoted as Angle1；2) t1 moment, acquisition control module (9) set engine valve phase object
Angle is Angle2, and pid algorithm can be calculated according to the deviation of valve-control target angle and actual angle in acquisition module (9)
Motor speed controls signal out, makes to adjust motor (6) and carries out acceleration or deceleration movement, it is final realize valve-control angle stabilization in
In the fluctuation range that setting value allows, acquisition control module (9) can acquire camshaft and crank phase angle difference in real time, that is, send out
Motivation valve-control angle, and it is fitted to engine valve phase angle curve；3) acquisition control module (9) is according to engine air
Door phase angle curve calculates the stability range of valve-control angle, when valve-control angle fluctuation is in setting target angle numerical value
When in ± 1% range, show that engine valve phase angle is in stability range；4) acquisition control module (9) is further according to starting
Machine valve-control angle curve calculates the stabilization time of valve-control angle, calculates engine valve phase angle and stablizes time public affairs
Formula are as follows: engine valve phase angle stablizes the time t5 for the time stability range being initially located in equal to engine valve phase angle
Subtract the time t1 that acquisition control module (9) issue setting engine valve phase angle Angle2 signal, engine valve phase
The angle stabilization time≤200ms shows that electronic type variable valve timing system stability meets the requirements, engine valve phase angle
It spends and stablizes time > 200mS, show that electronic type variable valve timing system stability is undesirable.
3. a kind of electronic type variable valve timing system function test method, the electronic type variable valve timing system function
Test method uses electronic type variable valve timing system device for testing functions, the electronic type variable valve timing system function
Energy test device includes device pedestal (1), and driving motor (2), engine positioning element are arranged on the device pedestal (1)
(3), engine (4) is configured to the structure being fixedly mounted on engine positioning element (3), the driving motor (2)
It is connect with engine crankshaft (5), camshaft speed sensor (11), camshaft speed sensor is also set up on engine (4)
(11) it is connect with acquisition control module (9), adjusts motor (6) and connect with motor control component (8), the motor control component
(8) it is connect with acquisition control module (9), acquisition control module (9) is connect with rotary speed torque sensor (10), revolving speed torque sensing
Device (10) be configured to acquisition adjust motor (6) tach signal and torque signal structure, the driving motor (2) with adopt
Collect control module (9) connection；
It is characterized by: the electronic type variable valve timing system function test method includes adjusting motor speed responsiveness
Test method, the testing procedure of the adjusting motor speed responsiveness test method are as follows: 1) acquisition control module (9) setting is driven
The initial speed of dynamic motor (2) is speed3rpm, and driving motor (2) drives engine (4), speed reducer (12) and adjusting motor
(6) rotated with speed3, it is therefore an objective to simulated engine (4) igniting after, electronic type variable valve timing system do not rotate actively and
Trailing operating condition；2) t1 moment, acquisition control module (9) set the rotating speed of target for adjusting motor (6) as speed4rpm, adopt
Collection control module (9) acquisition in real time, which adjusts the tach signal of motor (6) and is fitted to, adjusts motor (6) speed curves；3) it acquires
Control module (9) is calculated according to speed curves adjusts motor (6) the revolving speed rising response time, and it is public to calculate the revolving speed rising response time
Formula are as follows: the revolving speed rising response time is equal to adjust after motor (6) revolving speed is promoted reaches step rotating speed of target speed4rpm for the first time
Time t2 subtract acquisition control module (9) issue setting rotating speed of target Speed4 signal time t1, revolving speed rise response when
Between≤100mS, show that the responsiveness that motor (6) are adjusted in electronic type variable valve timing system meets the requirements, revolving speed, which rises, to be rung
> 100mS between seasonable shows that the responsiveness that motor (6) are adjusted in electronic type variable valve timing system is undesirable；4)t3
Moment, acquisition control module (9) set the rotating speed of target for adjusting motor (6) as speed3rpm, and acquisition control module (9) is real-time
Acquisition tach signal is simultaneously fitted to adjusting motor (6) speed curves；5) acquisition control module (9) is calculated according to speed curves and is adjusted
Motor (6) revolving speed declines the response time, calculates revolving speed and declines response time formula are as follows: the revolving speed decline response time, which is equal to, adjusts electricity
The time t4 for reaching step rotating speed of target speed3 after the decline of machine (6) revolving speed for the first time subtracts acquisition control module (9) sending and sets
Set the goal the time t3 of revolving speed Speed3 signal, and revolving speed declines response time≤100mS, shows electronic type variable valve timing system
The responsiveness that motor (6) are adjusted in system meets the requirements, and revolving speed declines response time > 100mS, is showing electronic type changeable air valve just
When system in adjust motor (6) responsiveness it is undesirable.
4. a kind of electronic type variable valve timing system function test method, the electronic type variable valve timing system function
Test method uses electronic type variable valve timing system device for testing functions, the electronic type variable valve timing system function
Energy test device includes device pedestal (1), and driving motor (2), engine positioning element are arranged on the device pedestal (1)
(3), engine (4) is configured to the structure being fixedly mounted on engine positioning element (3), the driving motor (2)
It is connect with engine crankshaft (5), camshaft speed sensor (11), camshaft speed sensor is also set up on engine (4)
(11) it is connect with acquisition control module (9), adjusts motor (6) and connect with motor control component (8), the motor control component
(8) it is connect with acquisition control module (9), acquisition control module (9) is connect with rotary speed torque sensor (10), revolving speed torque sensing
Device (10) be configured to acquisition adjust motor (6) tach signal and torque signal structure, the driving motor (2) with adopt
Collect control module (9) connection；
It is characterized by: the electronic type variable valve timing system function test method includes engine valve phase angle
Responsiveness test method, the testing procedure of the engine valve phase angle responsiveness test method are as follows: 1) acquisition control
Module (9) sets the initial speed of driving motor (2) as speed3rpm, and driving motor (2) drives engine (4), speed reducer
(12) it is rotated with adjusting motor (6) with speed3rpm, it is therefore an objective to after simulated engine (4) igniting, electronic type variable valve timing
System does not rotate and trailing operating condition actively；Camshaft and crank phase angle difference, i.e. engine valve phase angle, note
For Angle3；2) t1 moment, acquisition control module (9) set the target angle of engine valve phase angle as Angle4, adopt
Collecting pid algorithm in module (9) can calculate according to the deviation of valve-control target angle and actual angle and adjust motor (6)
Speed controling signal makes to adjust motor (6) progress acceleration or deceleration movement, final to realize valve-control angle stabilization in setting value
In the fluctuation range of permission, acquisition control module (9) acquires the angle signal of engine valve phase angle in real time and is fitted to
Curve；3) acquisition control module (9) calculates the engine valve phase angle rising response time according to angle curve, calculates valve
Phase angle rises response time formula are as follows: the valve-control angle rising response time is equal to valve-control angle and reaches for the first time
The time t2 of step target angle Angle4 subtracts the time that acquisition control module (9) issue setting target angle Angle4 signal
T1, valve-control angle rise response time≤100mS, show that the responsiveness of electronic type variable valve timing system conforms to
It asks, valve-control angle rises response time > 100mS, shows that the responsiveness in electronic type variable valve timing system is not met
It is required that；4) t3 moment, acquisition control module (9) set the target angle of engine valve phase angle as Angle3, acquire mould
Pid algorithm can calculate according to the deviation of valve-control target angle and actual angle and adjust motor (6) revolving speed control in block (9)
Signal processed makes to adjust motor (6) progress acceleration or deceleration movement, final to realize what valve-control angle stabilization allowed in setting value
In fluctuation range, acquisition control module (9) acquires the angle signal of engine valve phase angle in real time and is fitted to curve；5)
Acquisition control module (9) calculates engine valve phase angle according to angle curve and declines response time, engine valve phase
Angle declines response time calculation formula are as follows: the engine valve phase angle response time is equal under engine valve phase angle
The time t4 for reaching target angle Angle3 after drop for the first time subtracts acquisition control module (9) and issues setting target angle Angle3
The time t3 of signal, engine valve phase angle decline response time≤200mS, show electronic type variable valve timing system
Responsiveness meets the requirements, and engine valve phase angle declines response time > 200mS, shows electronic type variable valve timing system
Responsiveness of uniting is undesirable.
5. electronic type variable valve timing system function test method described in -4 any claims according to claim 1,
Be characterized in that: the driving motor (2) of the electronic type variable valve timing system device for testing functions passes through shaft coupling (15)
It is connect with engine crankshaft (5), adjusts and connect between motor (6) and engine cam (7) by speed reducer (12), it is described
Rotary speed torque sensor (10) setting is in speed reducer (12) and adjusts between motor (6), and the speed reducer (12) is planet tooth
Wheel construction, speed reducer (12) are mounted on engine (4) cylinder cap lateral location, the sun gear and engine cam of speed reducer (12)
(7) it is fixedly connected, the crank wheel of the belt wheel and engine crankshaft (5) that are arranged on the outer ring of speed reducer (12) is connected by Timing Belt
It connects.
6. electronic type variable valve timing system function test method described in -4 any claims according to claim 1,
Be characterized in that: the acquisition control module (9) of the electronic type variable valve timing system device for testing functions is configured to
By rotary speed torque sensor (10), acquisition adjusts the tach signal of motor (6) and the structure of torque signal in real time, and described adopts
Collection control module (9) is configured to acquire the revolving speed of engine cam (7) in real time by camshaft speed sensor (11)
The structure of signal, the tach signal conversion that acquisition control module (9) is configured to the engine cam that will be acquired in real time turn
The structure of camshaft phase angular values is turned to, acquisition control module (9) is configured to the engine crankshaft that will be acquired in real time
Tach signal conversion conversion crank phase angle number value structure, pid algorithm is configured to root in acquisition control module (9)
The structure for adjusting the speed controling signal of motor (6) is calculated according to the deviation of valve-control target angle and valve actual angle,
Acquisition control module (9) is configured to control to adjust the structure that motor (6) carry out acceleration or deceleration movement.
7. electronic type variable valve timing system function test method described in -4 any claims according to claim 1,
Be characterized in that: the electronic type variable valve timing system device for testing functions further includes engine operating temperature control cabinet
(13), temperature sensor (14), engine operating temperature control cabinet (13) be configured to control engine environment temperature-
The structure being adjusted within the scope of 40 °~150 °, temperature sensor (14) are connect with acquisition control module (9), acquisition control
Module (9) is configured to the temperature signal amendment fed back according to temperature sensor (14) variable valve timing system
The structure of camshaft phase angular values.
8. electronic type variable valve timing system function test method described in -4 any claims according to claim 1,
It is characterized in that: engine cam (7) one end of the electronic type variable valve timing system device for testing functions and deceleration
Machine (12) connection, camshaft speed sensor (11) includes coding disk (16) and Hall sensor (17), engine cam (7)
Camshaft speed sensor (11) are arranged in the other end, and camshaft speed sensor (11) is configured to acquire engine in real time convex
Wheel shaft (7) tach signal, and by the tach signal Real-time Feedback to the structure of acquisition control module (9).
9. electronic type variable valve timing system function test method described in -4 any claims according to claim 1,
It is characterized in that: the adjusting motor (6) and motor control component of the electronic type variable valve timing system device for testing functions
(8) it is mounted on fixed bracket, fixed bracket is mounted on engine (4) side, and the shaft for adjusting motor (6) is configured to wear
Cross the structure that fixed bracket is connect with rotary speed torque sensor (10).
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| US7441524B2 (en) * | 2004-03-19 | 2008-10-28 | Hitachi, Ltd. | Valve timing control apparatus for internal combustion engine and control method thereof |
| JP4509959B2 (en) * | 2006-03-31 | 2010-07-21 | 日立オートモティブシステムズ株式会社 | Control device for variable valve timing mechanism |
| CN101710026B (en) * | 2009-11-17 | 2011-05-04 | 朱留存 | Variable valve timing performance test device of gasoline engine |
| CN102393302B (en) * | 2011-08-02 | 2014-11-26 | 天津大学 | Device and method for measuring difference of molded lines of valves in fully variable valve mechanism |
| CN104198192A (en) * | 2014-09-09 | 2014-12-10 | 韩志强 | Testing device of variable valve system and testing method thereof |
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