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 PDF

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Publication number
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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CN
China
Prior art keywords
valve
internal combustion
combustion engine
testing
air valve
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CN201611253667.8A
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Chinese (zh)
Inventor
李淑静
周洲
叶斌
巫立民
李梅
徐聪聪
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Shanghai Marine Diesel Engine Research Institute
711th Research Institute of CSIC
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711th Research Institute of CSIC
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Priority to CN201611253667.8A priority Critical patent/CN107063698A/en
Publication of CN107063698A publication Critical patent/CN107063698A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/04Testing internal-combustion engines
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/04Testing internal-combustion engines
    • G01M15/042Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/046Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring revolutions
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/04Testing internal-combustion engines
    • G01M15/042Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/048Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/04Testing internal-combustion engines
    • G01M15/05Testing internal-combustion engines by combined monitoring of two or more different engine parameters

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

A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine
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.
CN201611253667.8A 2016-12-30 2016-12-30 A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine Pending CN107063698A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884194A (en) * 2017-11-07 2018-04-06 西华大学 A kind of big valve stroke measurement and knock-on test device and method
CN108036699A (en) * 2017-11-24 2018-05-15 重庆长安汽车股份有限公司 A kind of measuring system of continuously variable valve lift and port timing
CN109185274A (en) * 2018-10-18 2019-01-11 广东利迅达机器人系统股份有限公司 Retarder hydraulic intelligent loop test system and its test method
CN109611205A (en) * 2018-11-28 2019-04-12 天津大学 Four-stroke engine method for detecting phases based on valve actuating mechanism rocker arm position detection
CN111207927A (en) * 2018-11-21 2020-05-29 中国船舶重工集团公司第七一一研究所 Parameter monitoring device for valve drive mechanism of internal combustion engine and valve drive mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884194A (en) * 2017-11-07 2018-04-06 西华大学 A kind of big valve stroke measurement and knock-on test device and method
CN108036699A (en) * 2017-11-24 2018-05-15 重庆长安汽车股份有限公司 A kind of measuring system of continuously variable valve lift and port timing
CN108036699B (en) * 2017-11-24 2020-01-14 重庆长安汽车股份有限公司 Measuring system for continuously variable valve lift and valve timing
CN109185274A (en) * 2018-10-18 2019-01-11 广东利迅达机器人系统股份有限公司 Retarder hydraulic intelligent loop test system and its test method
CN111207927A (en) * 2018-11-21 2020-05-29 中国船舶重工集团公司第七一一研究所 Parameter monitoring device for valve drive mechanism of internal combustion engine and valve drive mechanism
CN109611205A (en) * 2018-11-28 2019-04-12 天津大学 Four-stroke engine method for detecting phases based on valve actuating mechanism rocker arm position detection
CN109611205B (en) * 2018-11-28 2020-12-25 天津大学 Four-stroke engine phase detection method based on valve train rocker arm position detection

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