CN107063698A - A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine - Google Patents
A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine Download PDFInfo
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- CN107063698A CN107063698A CN201611253667.8A CN201611253667A CN107063698A CN 107063698 A CN107063698 A CN 107063698A CN 201611253667 A CN201611253667 A CN 201611253667A CN 107063698 A CN107063698 A CN 107063698A
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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
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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
- G01M15/046—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring revolutions
-
- 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
- G01M15/048—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring temperature
-
- 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
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine, platform and method of testing, mechanism for testing includes：Motor, to provide driving power；Camshaft, is connected with electric-motor drive；Tappet, the thrust of the camshaft is passed into push rod, is internally provided with hydraulic piston；Push rod, one end is connected with tappet, and the other end is connected by linear force transmission mechanism with valve assembly, by driving the motion of valve assembly to realize the opening and closing of valve；Cylinder head, provided with the via for valve assembly hermetically passing, confined space of its Inner Constitution to accommodate head portion that actuating length；Hydraulic oil oil supply system, the hydraulic circuit to provide circulation for the hydraulic piston；Data collecting system, measures and gathers the test parameters of tested performance by sensor group；Control system, by controlling the different rotating speed of the camshaft stroke different with hydraulic piston, obtains the valve lifting travel with different motion function curve.
Description
Technical field
The present invention is diesel engine technologies field, and in particular to a kind of test machine of the side-mounted changeable air valve of internal combustion engine
Structure, platform and method of testing.
Background technology
For the common engine without VVT, the time of inlet and outlet door opening and closing is all fixed
, and valve stroke be also it is fixed immutable, that is, the cam profile of camshaft there was only one kind.It is this changeless
Valve timing and valve stroke be difficult with respect to engine in different rotating speeds and operating mode the need for.Changeless air inlet, row
Moral plays the lifting for hindering engine efficiency, the result is that engine both cannot get optimal high speed efficiency, also cannot be most
Good low speed torque, causing the lift can not possibly make engine all obtain good response in high velocity and low regime.
VVT makes engine to be met the valve stroke of demand in high velocity and low regime, from
And improve high engine speeds power and low speed torque.Wherein, reasonable selection valve timing, it is ensured that best charging efficiency hv, and
In different rotating speeds, different valve strokes are selected, are to improve the particularly important technical problem of engine performance.
And the variable valve actuator for air of diesel engine is developed to study engine under different rotating speeds, corresponding to valve motion
Function curve.Because the variable valve actuator for air exploitation of diesel engine is an important job, constantly survey is needed on stream
Try its performance and parameter.
It is directly to be surveyed variable valve actuator for air on the engine in the development process of current variable valve actuator for air
Examination.On the one hand this mode increases difficulty and the cycle of exploitation, on the other hand easily causes the damage of engine, adds out
Send out cost.
Less currently for the test platform of variable valve system, some existing changeable air valve testboards have following lack
Point：
1st, a part of testing bench structure is relatively easy, function is more single, and such as patent 201010213919.0 provides one kind
Engine variable valve timing system performance testboard, including cylinder head, camshaft be arranged on cylinder head in, camshaft front end with
Phase shifter is connected, and the rear end of camshaft is connected with photoelectric encoder, and valve assembly is installed in cylinder head and with cam axle
And act, OCV Oil Control Valve is installed, motor drives crankshaft sprocket by drive coordination band in cylinder head, crankshaft sprocket leads to
Cross below chain-driving phase shifter, crankshaft sprocket and be provided with crankshaft position sensor, the oil-feed that hydraulic oil is set from cylinder head
Mouth enters and oil-out outflow.The test event and the test stroke of valve that this kind of testboard can be done are relatively limited, most
Some less engines are can only be used to use.
2nd, also the test platform of some can complete correlated performance experiment and reliability test etc., such as patent
200910226342.4 a kind of variable valve timing performance test device of gasoline engine is disclosed, including test bench, liquid
Laminate section and control section, hydraulic part are connected with laboratory bench pipeline, control section and laboratory bench and hydraulic part
Connection, described test bench includes frame, and test specimen is arranged in frame, and motor is additionally provided with frame
And power transmission shaft, torque sensor is provided between driving motor output shaft and power transmission shaft, power transmission shaft is connected with test specimen,
Motor drives drive axis to realize the rotation of test specimen.But this kind of testboard is for changeable air valve parts
Monitoring Data is imperfect, and needs to be tested on the engine, causes R＆D costs higher.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of survey of the side-mounted changeable air valve of internal combustion engine
Test-run a machine structure, platform and method of testing, to meet key parameter and the survey of performance of the side-mounted variable valve actuator for air to that need to develop
Examination.
According to an aspect of the invention, there is provided a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine, including：
Motor, to provide driving power；
Camshaft, is connected with electric-motor drive；
Tappet, the thrust of the camshaft is passed into push rod, is internally provided with hydraulic piston；
Push rod, one end is connected with tappet, and the other end is connected by linear force transmission mechanism with valve assembly, by driving valve
The opening and closing of valve are realized in the motion of component,
Cylinder head, provided with the via for valve assembly hermetically passing, its Inner Constitution is to accommodate head portion that action row
The confined space of journey；
Hydraulic oil oil supply system, the hydraulic circuit to provide circulation for the hydraulic piston；
Data collecting system, measures and gathers the test parameters of tested performance by sensor group；
Control system, by controlling the different rotating speed of the camshaft stroke different with hydraulic piston, obtains having not
With the valve lifting travel of movement function curve.
The test platform, can simulate the test shape of valve mechanism on the engine in variable valve actuator for air development process
State, while realizing test and valve mechanism reliability testing to valve mechanism key parameter and performance, it is to avoid direct use
Engine is tested changeable air valve brought development difficulty and cycle, has saved testing cost.
Hydraulic piston is set in tappet, realizes cam rotation and hydraulic system to the double control of valve motion, a side
Face adds the stroke of valve, on the other hand can test the variable condition of the different motion function curve of valve, is variable gas
The research and development of door provide favourable support.
Linear force transmission mechanism includes rocker arm assembly, and the side arm that the rocking arm is set up is connected with the push rod, another side arm
It is connected with tested valve assembly.The lifting of piston rod drives pushrod movement in the rotation of camshaft and hydraulic piston, makes rocking arm
One side arm of component rises or declined, and then drives the linear movement for the valve assembly being connected with another side arm, realizes valve liter
The control of stroke is dropped.
The roller to transmit camshaft thrust is provided between the camshaft and the tappet.
It is connected between motor and camshaft by decelerator, the input of decelerator and the output end of motor connect
Connect, the output end of decelerator and the input of camshaft are connected.Decelerator is set to play between motor and camshaft
Match the effect of rotating speed and transmission torque.
The two ends of camshaft are fixedly connected by ring flange, are connected between decelerator and camshaft for flat key.
Hydraulic oil supply system includes hydraulic station, high-pressure oil pipe, magnetic valve, and hydraulic station is connected and located at very by high-pressure oil pipe
Cylinder assembly on post, high-pressure oil pipe is provided with magnetic valve.
Data collecting system includes PC and high-speed data acquisition card, and PC is connected with high-speed data acquisition card, for each
The real-time display of class sensor signal and storage；High-speed data acquisition card is used to gather various kinds of sensors signal simultaneously, and will adopt
The signal transacting of collection can receive the numerical signal of reading into PC.
Data collecting system also includes the photoelectric encoder to measure cam transient speed, and photoelectric encoder is according to cam
Transient speed signals trigger collection signal is sent to high-speed data acquisition card.
Sensor group also includes being arranged on the push rod foil gauge on push rod at rocker arm assembly, mainly to monitor push rod
The deformation quantity of push rod when deformation quantity of the component in variable valve actuator for air running, particularly added lift are produced, it is to avoid because
Thrust is excessive and causes the damage of push-rod assembly and other parts.
Sensor group also includes the corner displacement sensor to measure rocker arm assembly swing angle, corner displacement sensor
On rocker arm assembly, with rocker arm assembly synchronous axial system, valve total lift during main monitoring hydraulic variable valve mechanism operation
Change, it is to avoid valve because added lift is excessive and and piston collisions, the optimal added lift of optimization valve.
Data collecting system also includes the multiple sensor holders being located on high-pressure oil pipe, and the inside of sensor holder is provided with logical
Hole, the two ends of through hole are connected by high-pressure oil pipe joint with high-pressure oil pipe；The surface of sensor holder is provided with the use communicated with through hole
With the mounting hole for the sensor for installing measurement fluid behaviour.The unique design of sensor holder so that the survey of hydraulic oil correlation properties
Amount more facilitates, and test event is also more comprehensive.
Through hole on sensor holder includes being used to and the entering of magnetic valve, answer back the through hole fuel feed hole communicated and through hole oil return
Hole.
Measuring the sensor of fluid behaviour includes conventional pressure sensor, instantaneous pressure sensor and/or temperature sensor.
Conventional pressure sensor is arranged on the sensor holder after hydraulic station hydraulic oil outlet；Instantaneous pressure sensor is laid
Between magnetic valve and conventional pressure sensor, and/or between magnetic valve and cylinder assembly on tappet, for monitoring simultaneously
Gather the instantaneous pressure value of hydraulic oil in hydraulic piston and whole hydraulic circuit.
According to another aspect of the present invention there is provided a kind of test platform of the side-mounted changeable air valve of internal combustion engine, including：
First flat board, directly to carry motor, and is used as the weight tray of other structures；
Second flat board, is fixed on the first flat board by the first column, to carry the deceleration being connected with electric-motor drive
Device and camshaft；
3rd flat board, by with the second flat board the second column connected vertically and/or with the first flat board connected vertically
Three columns are fixed, and which is provided with the tappet seat to fixed tappet, and provided with the third through-hole alignd with cylinder；
The 4th alignd with third through-hole is equipped with multiple fourth panels to house cylinder assembly, each fourth panel
Through hole, fourth panel is stacked and placed on the 3rd flat board by the guide heap being laid in fourth hole.
The bottom of first flat board is provided with screw jack, with the height and flatness of integrally-regulated test platform.
Second flat board is provided with first rectangular opening hanging to camshaft.
First pillar, the second pillar and the 3rd pillar are provided with the hollow circular pad to adjust podium level.
Flat board hanger hole is equipped with first, second, third, fourth flat board.
According to the third aspect of the present invention there is provided a kind of method of testing of the side-mounted changeable air valve of internal combustion engine, including with
Lower step：
Motor drives cam axle by transmission mechanism, and the axial rotation of camshaft is converted to gas by tappet and push rod
The linear movement of door component；
Control system is obtained by the movement travel of the rotating speed and the hydraulic piston in tappet of control camshaft simultaneously
Valve lifting travel with different motion function curve；
By changing the control phase of hydraulic system, the valve lifting travel rules of different changing rules is obtained and/or right
The push rod strain answered.
By the way that the control phase of hydraulic system is corresponding with valve lifting travel, HYDRAULIC CONTROL SYSTEM phase is obtained to gas
The affecting laws of door lifting travel, and/or by the way that the control phase of hydraulic system is corresponding with push rod strain, obtain hydraulic pressure system
The affecting laws that system control phase is strained to push rod.
Acquisition system obtains the control of hydraulic system by the way that camshaft degree position is corresponding with the control action of hydraulic system
Phase processed.
Acquisition system obtains valve lifting travel by the way that the angle position of camshaft is corresponding with the progress of valve lifting travel
With the relation curve of cam angle.
Acquisition system obtains push rod strain with cam angle phase by the way that the angle position of camshaft is corresponding with push rod strain
The relation curve of position.
Compared with prior art, the invention has the advantages that：
1st, available for side-mounted valve mechanism electro-hydraulic variable valve actuator for air performance test and variable valve actuator for air zero
Unit test, function is more comprehensive.
2nd, test platform provided by the present invention can also be used for the test of other similar variable valve actuator for air, portable
By force.
3rd, test platform provided by the present invention not only can also can in real time monitor other processes ginseng with test performance parameter
Number, it is ensured that the safety of stand and measurand.
Brief description of the drawings
Fig. 1 is variable valve actuator for air test platform overall structure diagram；
Fig. 2 is the first flat board schematic diagram；
Fig. 3 is the first flat board Section A-A schematic diagram；
Fig. 4 is the first flat board section B-B schematic diagram；
Fig. 5 is the second flat board schematic diagram；
Fig. 6 is the second flat board D-D schematic cross-sections；
Fig. 7 is the second flat board C-C schematic cross-sections；
Fig. 8 is the second flat board M-M schematic cross-sections；
Fig. 9 is the 3rd flat board schematic diagram；
Figure 10 is the 3rd flat board E-E schematic cross-sections；
Figure 11 is the 3rd flat board F-F schematic cross-sections；
Figure 12 is fourth panel schematic diagram；
Figure 13 is the first pillar schematic diagram；
Figure 14 is the second pillar schematic diagram；
Figure 15 is the 3rd pillar schematic diagram；
Figure 16 is first flange disk installation diagram；
Figure 17 is second flange disk installation diagram；
Figure 18 is bearing spider installation diagram；
Figure 19 is ring flange, bearing spider and camshaft assembling schematic diagram；
Figure 20 is oil supply system schematic diagram；
Figure 21 is sensor scheme of installation；
001st, ground, 002, screw jack, the 003, first flat board, the 004, first pillar, the 005, second flat board, 006,
Second pillar, the 007, the 3rd pillar, the 008, the 3rd flat board, 009, fourth panel, 010, cylinder head assembly, 011, guide, 012,
Tappet seat, 013, decelerator, 014, motor, 015, screw jack bearing；
101st, the 3rd cylindrical hole, the 102, first mounting hole, the 103, first cylindrical hole, 104, flat board hanger hole；
201st, the second cylindrical hole, the 202, second mounting hole, the 203, first rectangular opening, the 204, first manhole, 205,
First counterbore, the 206, the 3rd mounting hole；
301st, the second counterbore, the 302, second manhole, the 303, second rectangular opening, the 304, the 3rd manhole, 305,
Three counterbores；
401st, the 4th manhole, the 402, the 5th manhole；
501st, the first pillar, the 502, second pillar, the 503, the 3rd pillar, the 504, first internal thread groove, 505, circular cylindrical projection
Platform, the 506, second internal thread groove；
601st, ring flange one, 602, ring flange two, 603, the first bolt hole, the 604, first positioning spigot；
701st, bearing spider, the 702, the 6th manhole, the 703, second bolt hole, the 704, second positioning spigot；
801st, deep groove ball bearing；
901st, oil temperature sensor, 902, machine oil oil return opening, 903, oil outlet, 904, pressure sensing before magnetic valve
Device, 905, total pressure sensor after magnetic valve, 906, three-way pipe, the 907, second pipeline, the 908, first pipeline, 909, oil inlet and oil return
Mouthful, 910, magnetic valve, 911, electromagnetic valve oil return pipe；
A01, photoelectric encoder, A02, corner displacement sensor, A03, push rod foil gauge, A04, rocker arm assembly, A05, gas
Cylinder cap.
Embodiment
In order to be better understood by technical scheme, with reference to Figure of description and specific embodiment to the present invention
It is described further.
Embodiment：
The mechanism for testing of the side-mounted changeable air valve of internal combustion engine, is adopted by experiment test stand, hydraulic oil feed system and data
The part of collecting system three is constituted.
As shown in figure 1, experimental stand includes：First flat board 003, the second flat board 005, the 3rd flat board 008, fourth panel
009th, the first pillar 501004, the second pillar 502006, the 3rd pillar 503007, guide 011, camshaft ring flange 1, convex
Axle flange disk 2 602, camshaft bearing bearing 701, motor 014, screw jack 002, decelerator 013, camshaft,
Tappet seat 012, push rod, cylinder head A05 components 010.Screw jack 002 is placed in ground by screw jack bearing 015
On face 001.
First flat board 003, the second flat board 005, the 3rd flat board 008, fourth panel 009 are processed by rectangular steel plates,
First flat board 003, the second flat board 005, the corner surrounding of the 3rd flat board 008 are machined with flat board hanger hole 104 to facilitate it with row
Hang installation.
As shown in figs 2-4, first cylindrical hole of first flat board 003 provided with the first pillar 501004, three of carrying
103103 and the 3rd cylindrical hole 101101 each four, and fixed fang bolt the first waist-shaped hole 102 two.
As shown in Figure 5-Figure 8, second cylindrical hole 201201 of second flat board 005 provided with the second pillar 502006 of carrying
Four, the second mounting hole 202202 of fixed camshaft bearing bearing 701, the first rectangular opening 203203 of hanging camshaft, the
Three pillars 503007 ride over four first of the top of the first pillar 501004 by the first manhole 204 of the second flat board 005
Counterbore 205 (bolt is anchored on the top of the first pillar 501004 through the second flat board 005), four the 3rd waists of fixed decelerator 013
Shape hole 206.
As Figure 9-Figure 11, the 3rd flat board 008 is provided with four the second counterbores for riding over the top of the second pillar 502006
301 (bolt is anchored on the top of the second pillar 502006 through the 3rd flat board 008), ride over four of the top of the 3rd pillar 503007
Three counterbores 305 (bolt is anchored on the head of top three through the 3rd flat board 008), the second manhole of six fixed tappet seats 012
302, place the second rectangular opening 303 of tappet seat 012, four the 3rd manholes using bolt fixation fourth panel 009
304。
As shown in figure 12, fourth panel 009 is provided with four the 4th manholes 401, the 5th manhole 402.
As shown in Figure 13-Figure 15, the first pillar 501004, the second pillar 502006, the 3rd pillar 503007 pass through cylindricality
Round steel is processed, and top is equipped with the first internal thread groove 504, and lower surface is equipped with cylindrical boss 505, the second pillar
502006 lower surfaces are provided with the second internal thread groove 506.Pass through between first flat board 003, the second flat board 005, the 3rd flat board 008
One pillar 501004, the second pillar 502006, the 3rd pillar 503007 are connected with each other, and fourth panel 009 is stacked by guide 011
It is placed on the 3rd flat board 008.
First round boss of four first pillars 501004 is inserted among the first flat board 003, and surrounding electric welding adds
Gu, the top of four first pillars 501004 is inserted in the second counterbore 301 of the second flat board 005, and the second flat board 005 and the
One pillar 501004 uses screw bolt reinforcing；First round boss of four the 3rd pillars 503007 be inserted in the first flat board 003 it
In, and surrounding is welded reinforcing, and the top of four the 3rd pillars 503007 is inserted in the 3rd counterbore 305 of the 3rd flat board 008, and
And the 3rd flat board 008 and the 3rd pillar 503007 use screw bolt reinforcing, wherein the shaft of two the 3rd pillars 503007 is through the
First manhole 204 of two flat boards 005.
As shown in Figure 16, Figure 17 and Figure 18, ring flange 1, the outside of ring flange 2 602 are machined with the first bolt hole
603, it is equipped with axle in the first positioning spigot 604, the axle of ring flange 1 and is provided with flat key groove, it is defeated for connection reducer 013
Shaft.The 6th manhole 702 is provided with the middle part of bearing spider 701, seat body, ring flange 1, ring flange 2 602 is placed on, and set
There is the second positioning spigot 704, bearing makes lower end provided with four the second bolt holes 703.
Motor 014 is arranged on the first flat board 003, and its output end is connected with the input of decelerator 013.
As shown in figure 19, cam is fixed by the second mounting hole 202 and the 3rd mounting hole 206 respectively on the second flat board 005
Axle bearing bearing 701 and decelerator 013, wherein camshaft both sides are deep by ring flange 1, the bolt connection of ring flange 2 602
Ditch ball bearing 801 is enclosed on ring flange 1, on ring flange 2 602, and camshaft bearing bearing 701 is enclosed on deep groove ball bearing 801
On, i.e., two deep groove ball bearings 801 are fixed on ring flange and bearing by the first positioning spigot 604, the second positioning spigot 704
Between bearing 701, while among the flat key groove of the flat key axle of decelerator 013 insertion ring flange 1.On second flat board 005
One rectangular opening 203 is set to prevent from the second flat board 005 interfering in cam rotary course.The of four second pillars 502006
One cylindrical boss 505 is inserted among the second flat board 005, and the lower end of the second pillar 502006 uses spiral shell with the second flat board 005
Bolt is reinforced, and the lower end surrounding electric welding of the second pillar 502006 is reinforced, and the top insertion the 3rd of four second pillars 502006 is flat
In second T-shaped hole of plate 008, and the 3rd flat board 008 and the second pillar 502006 use screw bolt reinforcing.
Six the second manholes 302 and second rectangular opening 303 that 3rd flat board 008 is provided with are to be used to install
Tappet seat 012, fourth panel 009 amounts to six pieces and is stacked and placed on by the heap of guide 011 on the 3rd flat board 008, wherein fourth panel
The 4th manhole 401 set by 009 aligns placement with the 3rd manhole 304 set by the 3rd flat board 008.
Cylinder head A05 is positioned on six pieces of fourth panels 009, and the 5th manhole 402 set by fourth panel 009 is
Avoid interfering with cylinder head A05 lower ends, cylinder head A05 fixation passes through the nonstandard cylinder bolt of four customizations, the cylinder bolt
From cylinder head A05 upper ends through the 4th manhole 401 of fourth panel 009 and the 3rd manhole of the 3rd flat board 008
304。
The height of whole experiment porch can by processing hollow circular pad, be positioned in the first pillar 501004, two,
Three are adjusted, to eliminate processing, design error.(such as decelerator 013, bearing make experimental facilities, tappet seat 012, cylinder head
A05 slight height regulation) can also be carried out by applying the method for pad.To ensure dynamometer machine output shaft, decelerator
013rd, cam shaft assignment, set the first mounting hole 102, the second mounting hole 202, the 3rd mounting hole 206 can facilitate decelerator
013 and camshaft moving left and right slightly.
Hydraulic oil oil supply system：It is main by hydraulic station, high-pressure oil pipe, high-pressure oil pipe joint, gasket seal, magnetic valve 910,
Magnetic valve 910, sensor installation seat etc. are constituted.
Hydraulic station：Enter including hydraulic oil container, lubricating oil pump, hydraulic oil, spill port etc., wherein hydraulic oil enter, spill port difference
Enter with the hydraulic oil of oil supply system, oil return pipe connects.
Magnetic valve 910：It is located between hydraulic station and hydraulic variable valve executing agency, and high-pressure oil pipe is held with changeable air valve
The break-make of hydraulic oil is mainly controlled by magnetic valve 910 in row mechanism, and then is controlled the start-up time of valve added lift and added
Lift range value.
Magnetic valve 910：910 installations for being used for magnetic valve 910 of magnetic valve are fixed, processing and magnetic valve 910 on valve seat
Enter, answer back communicate enter, spill port, entering, the side processing of oil return opening match with high-pressure oil pipe in (outer) be threadedly coupled
High-pressure oil pipe and magnetic valve 910.
Sensor holder：Its profile is in cuboid, internal rounded through hole, in the two ends processing of manhole and high-pressure oil pipe
Interior (outer) screw thread that joint matches, connects high-pressure oil pipe and sensor holder by high-pressure oil pipe joint, loads between the two close
Gasket is sealed；The logical screwed hole communicated in the Surface Machining of sensor holder with inner circular aperture, for required sensor (as instantaneously
Pressure sensor, temperature sensor etc.) installation.
It is specific as shown in figure 20, connected between hydraulic station and high-pressure oil pipe by machine oil oil return opening 902 and oil outlet 903
Connect, the hydraulic pressure of pipe line oil into and out of hydraulic fluid port is controlled by magnetic valve 910910.Magnetic valve 910 and oil outlet 903 it
Between be provided with magnetic valve 910 before pressure sensor 904, between magnetic valve 910 and hydraulic variable valve executing agency be provided with electromagnetism
Total pressure sensor 905 after valve 910.Pass through threeway between total pressure sensor 905 and gas valve executing mechanism after magnetic valve 910
High-pressure oil pipe is divided into by pipe 906, in-line 907 and return line 908, and the two is joined by oil inlet and oil return mouthful 909 with cylinder assembly
It is logical.Pipeline between magnetic valve 910 and machine oil oil return opening 902 is electromagnetic valve oil return pipe 911.Oil temperature is provided with hydraulic station
Sensor 901.
Data collecting system：As shown in figure 21, mainly by PC, high-speed data acquisition card, photoelectric encoder A01, routine
Pressure sensor, instantaneous pressure sensor, temperature sensor, push rod foil gauge A03, corner displacement sensor etc. are constituted.
PC, high-speed data acquisition card：PC is connected with high-speed data acquisition card, for the real-time of various kinds of sensors signal
Display and storage；High-speed data acquisition card is used to gather various kinds of sensors signal simultaneously, and by the signal transacting of collection into PC
The numerical signal read can be received.
Photoelectric encoder A01：It is connected with cam and with cam synchronous axial system, is mainly used in measuring the transient speed of cam,
And give high-speed data acquisition card transmission trigger collection signal according to the transient speed signals of cam.
Conventional pressure sensor：On the sensor holder after hydraulic station hydraulic oil outlet, main monitoring hydraulic station
Whether charge oil pressure is stablized.
Instantaneous pressure sensor：Being separately mounted to magnetic valve 910 can with hydraulic pressure with conventional pressure sensor and magnetic valve 910
On sensor holder between air valve variation executing agency, for monitoring and gathering hydraulic oil in hydraulic piston and whole hydraulic circuit
Instantaneous pressure value.
Temperature sensor：On hydraulic station and each sensor holder, the oil temperature of hydraulic circuit everywhere is monitored.
Push rod foil gauge A03：Installed in valve actuating push rod at rocker arm assembly A04, main monitoring push-rod assembly is variable
The deformation quantity of push rod when deformation quantity in valve mechanism running, particularly added lift are produced, it is to avoid because thrust is excessive
Cause the damage of push-rod assembly and other parts.
Corner displacement sensors A 02：On valve rocker component A04, with rocker arm assembly A04 synchronous axial systems, mainly
The change of the total lift of valve when monitoring hydraulic variable valve mechanism operation, it is to avoid valve is because added lift is excessive and is touched with piston
Hit, the optimal added lift of optimization valve.
A kind of method of testing of the side-mounted changeable air valve of internal combustion engine, comprises the following steps：
Motor drives cam axle by transmission mechanism, and the axial rotation of camshaft is converted to gas by tappet and push rod
The linear movement of door component；
Control system is obtained by the movement travel of the rotating speed and the hydraulic piston in tappet of control camshaft simultaneously
Valve lifting travel with different motion function curve.
Acquisition system obtains valve lifting travel by the way that the angle position of camshaft is corresponding with the progress of valve lifting travel
With the relation curve of cam angle.
Acquisition system obtains the control of hydraulic system by the way that camshaft degree position is corresponding with the control action of hydraulic system
Phase processed.
Acquisition system obtains push rod strain with cam angle phase by the way that the angle position of camshaft is corresponding with push rod strain
The relation curve of position.
By the way that the control phase of hydraulic system is corresponding with valve lifting travel and push rod strain, hydraulic system control is obtained
The affecting laws that phase processed is strained to valve lifting travel and push rod.
By changing the control phase of hydraulic system, the valve lifting travel rules of different changing rules is obtained and corresponding
Push rod is strained.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes formed by any combination.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical characteristic of energy carries out technical scheme formed by replacement mutually.
Claims (24)
1. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine, it is characterised in that including：
Motor, to provide driving power；
Camshaft, is connected with electric-motor drive；
Tappet, the thrust of the camshaft is passed into push rod, is internally provided with hydraulic piston；
Push rod, one end is connected with tappet, and the other end is connected by linear force transmission mechanism with valve assembly, by driving valve assembly
Motion realize the opening and closing of valve；
Cylinder head, provided with the via for valve assembly hermetically passing, its Inner Constitution is to accommodate head portion that actuating length
Confined space；
Hydraulic oil oil supply system, the hydraulic circuit to provide circulation for the hydraulic piston；
Data collecting system, measures and gathers the test parameters of tested performance by sensor group；
Control system, by controlling the different rotating speed of the camshaft stroke different with hydraulic piston, is obtained with different fortune
The valve lifting travel of dynamic function curve.
2. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 1, it is characterised in that：It is linear to pass
Force mechanisms include rocker arm assembly, and the side arm that the rocking arm is set up is connected with the push rod, another side arm and tested valve group
Part is connected.
3. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 2, it is characterised in that：It is described convex
The roller to transmit camshaft thrust is provided between wheel shaft and the tappet.
4. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 1, it is characterised in that：The electricity
It is connected between motivation and the camshaft by decelerator, the output end of the input of the decelerator and the motor connects
Connect, the output end of the decelerator and the input of camshaft are connected.
5. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 4, it is characterised in that：It is described convex
The two ends of wheel shaft are fixedly connected by ring flange, are connected between the decelerator and camshaft for flat key.
6. according to a kind of mechanism for testing of any described side-mounted changeable air valves of internal combustion engine of claim 1-5, it is characterised in that：
The hydraulic oil supply system includes hydraulic station, high-pressure oil pipe, magnetic valve, and it is gentle to connect the hydraulic station by the high-pressure oil pipe
Cylinder component, the high-pressure oil pipe is provided with magnetic valve.
7. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 6, it is characterised in that：The number
Include PC and high-speed data acquisition card according to acquisition system, the PC is connected with high-speed data acquisition card, for all kinds of described
The real-time display of sensor signal and storage；The high-speed data acquisition card is used to gather various kinds of sensors signal simultaneously, and will
The signal transacting of collection can receive the numerical signal of reading into PC.
8. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：The number
Also include the photoelectric encoder to measure cam transient speed according to acquisition system, the photoelectric encoder is according to the instantaneous of cam
Tach signal sends trigger collection signal to the high-speed data acquisition card.
9. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：It is described to pass
Sensor group also includes being arranged on the push rod foil gauge on the push rod at rocker arm assembly.
10. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：It is described
Sensor group also includes the corner displacement sensor to measure the rocker arm assembly swing angle.
11. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：It is described
Data collecting system also includes the multiple sensor holders being located on the high-pressure oil pipe, and the inside of the sensor holder is provided with logical
Hole, the two ends of the through hole are connected by high-pressure oil pipe joint with the high-pressure oil pipe；The surface of the sensor holder be provided with
The mounting hole for the sensor to install measurement fluid behaviour that the through hole is communicated.
12. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：It is described
Through hole on sensor holder includes being used to and the entering of the magnetic valve, the through hole fuel feed hole and through hole spill port that communicate of answering back.
13. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：Measurement
The sensor of fluid behaviour includes conventional pressure sensor, instantaneous pressure sensor and/or temperature sensor.
14. a kind of mechanism for testing of the side-mounted changeable air valve of internal combustion engine according to claim 7, it is characterised in that：It is described
Conventional pressure sensor is arranged on the sensor holder after the hydraulic station hydraulic oil outlet；The instantaneous pressure sensor is laid
Between the magnetic valve and the conventional pressure sensor, and/or between magnetic valve and cylinder head, for monitoring simultaneously collection liquid
Press the instantaneous pressure value of hydraulic oil in plunger shaft and whole hydraulic circuit.
15. a kind of test platform of the side-mounted changeable air valve of internal combustion engine, it is characterised in that including：
First flat board, directly to carry motor, and is used as the weight tray of other structures；
Second flat board, is fixed on first flat board by the first column, to carry what is be connected with the electric-motor drive
Decelerator and camshaft；
3rd flat board, by with second flat board the second column connected vertically and/or with the first flat board connected vertically
Three columns are fixed, and which is provided with the tappet seat steadily passed through to push rod, and provided with the third through-hole alignd with cylinder；
It is equipped with what is alignd with the third through-hole in multiple fourth panels to house cylinder assembly, each fourth panel
Fourth hole, the fourth panel is stacked and placed on the 3rd flat board by the guide heap being laid in the fourth hole.
16. a kind of test platform of the side-mounted changeable air valve of internal combustion engine according to claim 15, it is characterised in that：It is described
The bottom of first flat board is provided with screw jack, with the height and flatness of integrally-regulated test platform.
17. a kind of test platform of the side-mounted changeable air valve of internal combustion engine according to claim 15, it is characterised in that：It is described
Second flat board is provided with first rectangular opening hanging to the camshaft.
18. a kind of test platform of the side-mounted changeable air valve of internal combustion engine according to claim 15, it is characterised in that：It is described
First pillar, the second pillar and the 3rd pillar are provided with the hollow circular pad to adjust podium level.
19. a kind of test platform of the side-mounted changeable air valve of internal combustion engine according to claim 15, it is characterised in that：It is described
Flat board hanger hole is equipped with first, second, third, fourth flat board.
20. a kind of method of testing of the side-mounted changeable air valve of internal combustion engine, it is characterised in that comprise the following steps：
Motor drives cam axle by transmission mechanism, and the axial rotation of camshaft is converted to valve group by tappet and push rod
The linear movement of part；
Control system is had by the movement travel of the rotating speed and the hydraulic piston in tappet of control camshaft simultaneously
The valve lifting travel of different motion function curve；By changing the control phase of hydraulic system, different changing rules are obtained
Valve lifting travel rule and/or the strain of corresponding push rod.
21. a kind of method of testing of the side-mounted changeable air valve of internal combustion engine according to claim 20, it is characterised in that：Pass through
The control phase of the hydraulic system is corresponding with the valve lifting travel, the HYDRAULIC CONTROL SYSTEM phase is obtained to gas
The affecting laws of door lifting travel, and/or by the way that the control phase of the hydraulic system is corresponding with push rod strain, obtain liquid
The affecting laws that pressure system control phase is strained to push rod.
22. a kind of method of testing of the side-mounted changeable air valve of internal combustion engine according to claim 21, it is characterised in that：Collection
System obtains the control of the hydraulic system by the way that the camshaft degree position is corresponding with the control action of the hydraulic system
Phase processed.
23. a kind of method of testing of the side-mounted changeable air valve of internal combustion engine according to claim 21, it is characterised in that：Collection
System is obtained valve lifting travel and turned with cam by the way that the angle position of the camshaft is corresponding with the progress of valve lifting travel
The relation curve at angle.
24. a kind of method of testing of the side-mounted changeable air valve of internal combustion engine according to claim 21, it is characterised in that：Collection
System obtains push rod strain with cam angle phase by the way that the angle position of the camshaft is corresponding with push rod strain
Relation curve.
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| CN201611253667.8A CN107063698B (en) | 2016-12-30 | 2016-12-30 | Testing mechanism, platform and testing method for side-mounted variable valve of internal combustion engine |
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