CN105865960B - A kind of secondary abrasion test method of Valve-valve seat circle friction and device - Google Patents
A kind of secondary abrasion test method of Valve-valve seat circle friction and device Download PDFInfo
- Publication number
- CN105865960B CN105865960B CN201610304377.5A CN201610304377A CN105865960B CN 105865960 B CN105865960 B CN 105865960B CN 201610304377 A CN201610304377 A CN 201610304377A CN 105865960 B CN105865960 B CN 105865960B
- Authority
- CN
- China
- Prior art keywords
- valve
- screw rod
- combustion
- seat circle
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 208000035874 Excoriation Diseases 0.000 title claims abstract description 29
- 238000005299 abrasion Methods 0.000 title claims abstract description 29
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 79
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 239000002737 fuel gas Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000002828 fuel tank Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 239000000567 combustion gas Substances 0.000 claims description 13
- 239000000446 fuel Substances 0.000 claims description 8
- 238000004088 simulation Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 230000009931 harmful effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a kind of secondary abrasion test method of valve valve retainer friction and devices, including rack, valve, valve retainer, combustion chamber, the mechanism for driving valve rotation and high-temperature fuel gas feed system and exhaust system.It is mounted in the rack by the camshaft of servo motor driving, for driving the valve motion, the valve retainer to be installed in the combustion chamber, head portion that is put in combustion chamber, is contacted with valve retainer.The high-temperature fuel gas system supplies high-temperature fuel gas into combustion chamber, and Resistant heating device is there also is provided in combustion chamber.Inner Wall of Combustion Chamber is equipped with temperature sensor, and pressure sensor is installed on valve retainer.Present apparatus simple structure can significantly simulate the actual condition of valve and valve retainer, greatly shorten the time for completing the secondary wear test of valve valve retainer friction, improve the reliability of valve and the experiment of valve retainer friction and Wear Study.
Description
Technical field
The present invention relates to valve and valve retainer wear test field more particularly to a kind of friction of Valve-valve seat circle are secondary
Abrasion test method and device.
Background technology
In engine valve actuating mechanism, valve and the operating condition of valve retainer quite it is severe, be subjected to come from valve
The impact force of spring and high-temperature fuel gas, and being washed away by with corrosive high-temperature fuel gas, especially exhaust valve and exhaust
Seat ring, valve, with very high speed constant impingement valve retainer, are easily worn in the case where lubricating condition is very poor.Valve
Surface, which generates abrasion, can cause valve sinking, cylinder leakage tester, cylinder to press through low serious consequence, increase fuel consumption, and reduction is started
The power of machine, thus within the engine, valve-secondary wear condition of valve retainer friction directly affects the work effect of engine
Rate, fuel availability and service life etc..
In order to preferably grasp the wearing character of valve, valve retainer, a large number of experiments research has been carried out both at home and abroad, has been mostly used
Engine overall test, cumbersome, spent time is long.Existing valve retainer wears bench test device at this stage, adopts more
It is loaded with hydraulic loaded, or by calutron, to simulate valve suffered pressure at work.Hydraulic loading device energy
Loss is big, safeguards strictly, is also easy to produce leakage, it is difficult to it repairs, and the power that calutron generates is too small, electromagnet armature fever is serious,
Service life is not grown, and does not consider the effect of high-temperature fuel gas.
Invention content
In order to solve the problems in the existing technology, the wearing character of valve and valve retainer, this hair are preferably studied
The secondary actual condition of bright combination Valve-valve seat circle friction provides a kind of secondary abrasion test method of Valve-valve seat circle friction
And device.Both valve may be implemented during opening and closing, valve rotation does not rotate the experiment under two kinds of different operating modes from valve,
It can simulate under whether there is or not the different operating modes of the two of combustion atmosphere kind, the abrasion condition contrast test of valve and valve retainer, valve
Seat ring is convenient for disassembly and assembly, while can absorb and handle the tail gas of discharge, environmental protection.
The present invention is achieved through the following technical solutions：
A kind of secondary abrasion test device of Valve-valve seat circle friction, including base station 1, the combustion chamber mounted on 1 lower section of base station
38, it provides the high-temperature fuel gas feed system of combustion gas to combustion chamber 38, the valve guide sleeve 4-1 being arranged on base station 1, be arranged in gas
Valve retaining sleeve 5 above door guide sleeve 4-1, the folder for 4 valve stem tail portion of clamping air valve being arranged in valve retaining sleeve 5
Hold bar 6, be arranged the screw rod 33 of the sides valve guide sleeve 4-1 screw rod guide sleeve 34, be arranged on base station 1 supporting rack 1-1,
The camshaft 15 that its rotation is driven by taking motor 20 on supporting rack 1-1；
The valve disc 4-2 of the valve 4 is placed in combustion chamber 38, valve guide sleeve 4-1 and valve disc 4-2 rear end faces it
Between access on offer tail gas a discharge chamber 2-1, tail gas discharge chamber 2-1 and pass through exhaust pipe 3 and connect exhaust collection case 2；It is described
Valve disc 4-2 rear end faces are additionally provided with a valve retainer fixture 45, and the interference fit of valve retainer 44 sets within it；As valve disc 4-
When 2 rear end faces offset with valve retainer 44, the access cut-out between combustion chamber 38 and tail gas discharge chamber 2-1, after valve disc 4-2
When end face is detached with valve retainer 44, the access between combustion chamber 38 and tail gas discharge chamber 2-1 is connected to；
One is additionally provided in combustion chamber 38, below valve disc 4-2 front end faces to be bullied within the engine for simulating valve 4
The valve moment impact mechanism of body pressure；
Screw rod guide sleeve 34 is stretched out in the upper end of the screw rod 33, and is equipped with gear wheel 19 on it；The supporting rod 6
Upper end stretch out valve retaining sleeve 5, and the pinion gear 10 engaged with gear wheel 19 is installed on it；
It is separately installed with radial thrust bearing (22,25,9,12) on the top and middle part of screw rod 33 and supporting rod 6, it is centripetal
The inner ring lower face of thrust bearing 9 is equipped with the head cover 8 to offset with it；It is respectively equipped with one above the radial thrust bearing on each top
It is driven collar 13,16, a driver plate 14, upper surface and the camshaft 15 of driver plate 14 are installed on transmission collar 13,16
Cam contact, when camshaft 15 rotates, Cam reciprocating pushes driver plate 14, and by be driven collar (13,16) will it is reciprocal under
Pressure square, which synchronizes, passes to screw rod 33 and supporting rod 6, make gear wheel 19 and pinion gear 10 follow screw rod 33 and supporting rod 6 it is synchronous on
Lower reciprocating motion, while pumping, screw rod 33 (for non-self-lock-ing screw rod) generates rotary force, in the effect of rotary force
Lower gear wheel 19 passes to pinion gear 10 with rotating with it, and by rotary force, and pinion gear 10 makes while driving supporting rod 6 to rotate
The head portion that of valve 4 pumps in rotary manner in combustion chamber 38.
Screw reset spring 32 is equipped in the screw rod guide sleeve 34, for providing a upward thrust to screw rod 33；
Supporting rod resetting spring 7 is equipped in the valve retaining sleeve 5, for providing a upward thrust to supporting rod 6.
The helical angle λ of the screw rod 33 is more than angle of friction ρ, is non-self-lock-ing screw rod, the gear wheel 19 and screw rod 33 it
Between ball nut 24 is installed, a splicing sleeve 23 is installed, radial thrust bearing is mounted on the screw rod of 19 upper surface of gear wheel
On the screw rod of the lower end of gear wheel 19, the radial thrust bearing inner ring is in contact with the head cover 26 of screw rod 33,33 upper end of screw rod
Sleeve 21 be mounted in splicing sleeve 23, the top of screw rod 33 passes through sleeve 21, radial thrust bearing inner ring lower face and supporting sleeve
23 shoulder end faces are in contact, and radial thrust bearing outer ring upper surface is in contact with drive socket 17, and transmission collar is mounted on transmission
17 upper surface of sleeve.
Transmission ratio i=4 between the gear wheel 19 and pinion gear 10:1；The inner wall of the combustion chamber 38 is equipped with resistance wire
43, resistance wire 43 connects external power supply；It is detachable be fixedly connected between the valve retainer fixture 45 and base station 1；Burning
Room 38 is fixed by bolt and base station 1.
A fixing bracket 18 is equipped between the screw rod 33 and supporting rod 6, fixing bracket 18 is used for screw rod 33 and clamping
Bar 6 is positioned；Supporting rod 6 is equipped with sleeve 11 with fixing bracket 18.
Valve moment impact mechanism includes sleeve, mandril 39, push rod 40, pusher motor 41；Under the mandril 39
End is placed in upper end in sleeve and stretches out sleeve and offset with valve disc 4-2 front end faces；The push rod 40 is mounted in sleeve,
Upper end corresponds to the lower end of mandril 39, and buffer spring 42 is arranged on the lower end of mandril 39；The lower end of push rod 40
Portion stretches out sleeve bottom and connects pusher motor 41.
The high-temperature fuel gas feed system includes fuel tank 29, the booster pump 27 of oil dropping apparatus supercharging, air blower 48, control switch
47, pulse igniter 36, nozzle 35, combustion tube 37；
The air blower 48 connects 38 input terminal of combustion chamber by the admission line 50 with a gas buffer screen pipe 49
The side wall of combustion tube 37；
The fuel tank 29 connects nozzle 35 by an oil pipeline 31 with servo valve 28, and 35 ejection section of nozzle is placed in combustion
It burns in pipe 37；Pulse igniter 36 is arranged on the side wall of combustion tube 37；Control the connection of switch 47 control servo valve 28 and pulse
Igniter 36 controls their ON/OFF；There is one piece of traverse 30 in the fuel tank 29, fuel tank 29 is divided to for two mutual not phases
Cavity room, upper chamber fill air, and lower chambers are charged.
A kind of secondary abrasion test method of Valve-valve seat circle friction is as follows：
Step 1：The secondary wear test step of Valve-valve seat circle friction under simulated combustion atmosphere, valve rotation operating mode：It watches
Taking motor 20 drives camshaft 15 to rotate, and cam is in contact with driver plate 14, and driver plate 14 is mounted on transmission collar 13,16,
Gear wheel 19 and valve 4 are transferred the motion to, valve 4 is opened, and screw reset spring 32 and supporting rod resetting spring 7 are pressed simultaneously
Contracting, gear wheel 19, also by from 33 rotary force of screw rod, generate rotation, to drive small tooth while stress moves downward
10 rotation of wheel, makes valve 4 generate rotary motion in opening process；In 15 return stroke of camshaft, valve 4 and gear wheel 19 divide
Do not rise under the action of screw reset spring 32 and supporting rod resetting spring 7, gear wheel 19 is similarly subjected to from screw rod 33
Rotary force and rotate so that valve 4 generate rotary motion；In valve 4 is closed and opens whole process, 19 He of gear wheel
Pinion gear 10 remain up and down moves synchronously, prevent two they generate relative motion in the vertical direction, to avoid generation
Harmful effect caused by frictional force on vertical direction rotates gear；It takes a seat moment in valve 4,41 driving push rod of pusher motor
40 move upwards, and so that mandril 39 (with a certain size power) is impacted valve 4 upwards and keep surge to valve next time
Moment is opened, the suffered gas pressure within the engine of valve 4 is simulated with this, is opened moment in valve 4, pusher motor 41 drives
Dynamic push rod 40 moves downward, and surge is cancelled, and at the same time, booster pump 27 continues to be pressed into 29 upper chamber of fuel tank empty
Gas, increases the pressure in fuel tank 29, and the input air into combustion tube 37 by admission line 50 of air blower 48 is taken a seat in valve 4
Moment, control switch 47 control servo valve 28 and open, and fuel enters oil pipeline 31 under air pressure, and is sprayed from nozzle 35
Go out, is mixed with the air inputted in admission line 50, meanwhile, control switch 47 controls pulse igniter 36 and lights fuel, generates
High-temperature fuel gas is input in combustion chamber 38, is simulated valve 4 and valve retainer 44 and is washed away and corrosion process by high-temperature fuel gas；
It is opened moment in valve 4, control switch 47 controls servo valve 28 and pulse igniter 36 is closed；Combustion chamber 38 generates
Tail gas pass through tail gas discharge chamber 2-1 successively, exhaust pipe 3 enters in exhaust collection case 2；Complete simulated combustion atmosphere, valve rotation
The secondary wear test of Valve-valve seat circle friction under condition of changing a job.
Simulation is without the secondary wear test step of Valve-valve seat circle friction under combustion atmosphere, valve rotation operating mode：Valve motion
Process is identical as step 1；Close booster pump 27, servo valve 28 and pulse igniter 36；Supplying heat source is changed by original combustion gas
It is heated at resistance wire 43, you can complete without the secondary wear test of Valve-valve seat circle friction under combustion atmosphere, valve rotation operating mode.
Simulation has combustion atmosphere, the valve test procedure that Valve-valve seat circle friction pair is not worn under the rotating condition：Combustion gas
It is identical as step 1 to supply control process；Remove gear wheel 19, you can completing valve, Valve-valve seat circle does not rub under the rotating condition
Wipe secondary wear test.
It simulates without the not experiment of the secondary abrasion of Valve-valve seat circle friction under the rotating condition of combustion atmosphere, valve：Close supercharging
Pump 27, servo valve 28 and ignition switch 36；Gear wheel 19 is removed, making supplying heat source into resistance wire 43 by original combustion gas heats,
No combustion atmosphere, the valve not secondary wear test of Valve-valve seat circle friction under the rotating condition can be completed.
The present invention compared with the existing technology, has the following advantages and effect：
The present invention includes base station, the combustion chamber below base station, to the high-temperature fuel gas supply of combustion chamber offer combustion gas
System, the valve guide sleeve being arranged on base station, the valve retaining sleeve being arranged above valve guide sleeve, setting are clamped in valve
In set for clamping air valve valve stem tail portion supporting rod, be arranged the screw rod of valve guide sleeve side screw rod guide sleeve,
The supporting rack being arranged on base station, the camshaft for driving it to rotate by taking motor on supporting rack, and for simulating
The valve structures combination such as valve moment impact mechanism of suffered gas pressure within the engine.Can have high-temperature fuel gas wash away and
The contrast test that valve and valve retainer are carried out under the different operating modes of two kinds of Resistant heating, can simulate high-temperature fuel gas to valve and gas
Seat ring washes away and corrodes, and more meets the valve actual condition secondary with valve retainer friction, improves valve and valve retainer
The reliability of Research on Wear Characteristics experiment, while greatly shortening the time for completing the secondary wear test of Valve-valve seat circle friction.
Valve may be implemented during opening and closing in the present invention, and valve rotation does not rotate the mill under two kinds of different operating modes from valve
Damage experiment.Loaded using pusher motor, have many advantages, such as it is simple in structure, it is easily controllable.
Be between seat ring fixture and base station of the present invention it is detachable be fixedly connected, it is convenient for disassembly and assembly.The tail of discharge can be collected
Gas, environmental protection
Description of the drawings
Fig. 1 is Valve-valve seat circle of the present invention friction pair abrasion test device planar structure schematic diagram one.
Fig. 2 is Valve-valve seat circle of the present invention friction pair abrasion test device planar structure schematic diagram two.
Fig. 3 is the A partial enlargement structural representations in Fig. 2.
Fig. 4 is the B partial enlargement structural representations in Fig. 2.
Fig. 5 is the C partial enlargement structural representations in Fig. 2.
Fig. 6 is the secondary abrasion test device dimensional structure diagram of Valve-valve seat circle of the present invention friction.
Fig. 7 is the structural schematic diagram of valve retainer fixture 45.
Fig. 8 is the structural schematic diagram of fixing bracket 18.
Specific implementation mode
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Fig. 1 to Fig. 8.The invention discloses a kind of secondary abrasion test devices of Valve-valve seat circle friction, including base station
1, the high-temperature fuel gas feed system of combustion gas mounted on the combustion chamber 38 of 1 lower section of base station, to combustion chamber 38 is provided, be arranged in base station 1
On valve guide sleeve 4-1, be arranged above valve guide sleeve 4-1 valve retaining sleeve 5, be arranged in valve retaining sleeve 5
For 4 valve stem tail portion of clamping air valve supporting rod 6, screw rod guide sleeve in the screw rod 33 of the sides valve guide sleeve 4-1 is set
34, supporting rack 1-1 on base station 1, the camshaft that its rotation is driven by taking motor 20 on supporting rack 1-1 are set
15；
The valve disc 4-2 of the valve 4 is placed in combustion chamber 38, valve guide sleeve 4-1 and valve disc 4-2 rear end faces it
Between access on offer tail gas a discharge chamber 2-1, tail gas discharge chamber 2-1 and pass through exhaust pipe 3 and connect exhaust collection case 2；It is described
Valve disc 4-2 rear end faces are additionally provided with a valve retainer fixture 45, and the interference fit of valve retainer 44 sets within it；As valve disc 4-
When 2 rear end faces offset with valve retainer 44, the access cut-out between combustion chamber 38 and tail gas discharge chamber 2-1, after valve disc 4-2
When end face is detached with valve retainer 44, the access between combustion chamber 38 and tail gas discharge chamber 2-1 is connected to；
One is additionally provided in combustion chamber 38, below valve disc 4-2 front end faces to be bullied within the engine for simulating valve 4
The valve moment impact mechanism of body pressure；
Screw rod guide sleeve 34 is stretched out in the upper end of the screw rod 33, and is equipped with gear wheel 19 on it；The supporting rod 6
Upper end stretch out valve retaining sleeve 5, and the pinion gear 10 engaged with gear wheel 19 is installed on it；
It is separately installed with radial thrust bearing (22,25,9,12) on the top and middle part of screw rod 33 and supporting rod 6, and
It is respectively equipped with a transmission collar 13,16 above the radial thrust bearing on each top, a transmission is installed on transmission collar 13,16
Plate 14, the cam contact of the upper surface and camshaft 15 of driver plate 14, when camshaft 15 rotates, Cam reciprocating pushes driver plate
14, and reciprocal pushing torque is synchronized by transmission collar (13,16) and passes to screw rod 33 and supporting rod 6, make 19 He of gear wheel
Pinion gear 10 follows screw rod 33 and supporting rod 6 to synchronize and pump, and while pumping, screw rod 33 (is non-
Self-locking screw rod) rotary force is generated, gear wheel 19 passes to pinion gear with rotating with it, and by rotary force under the action of rotary force
10, pinion gear 10 makes the head portion that of valve 4 upper and lower in rotary manner in combustion chamber 38 while driving supporting rod 6 to rotate
It moves back and forth.
Screw reset spring 32 is equipped in the screw rod guide sleeve 34, for providing a upward thrust to screw rod 33；
Supporting rod resetting spring 7 is equipped in the valve retaining sleeve 5, for providing a upward thrust to supporting rod 6.
The helical angle λ of the screw rod 33 is more than angle of friction ρ, is non-self-lock-ing screw rod, the gear wheel 19 and screw rod 33 it
Between ball nut 24 is installed, a splicing sleeve 23 is installed, radial thrust bearing is mounted on the screw rod of 19 upper surface of gear wheel
On the screw rod of the lower end of gear wheel 19, the radial thrust bearing inner ring is in contact with the head cover 26 of screw rod 33,33 upper end of screw rod
Sleeve 21 be mounted in splicing sleeve 23, the top of screw rod 33 passes through sleeve 21, radial thrust bearing inner ring lower face and supporting sleeve
23 shoulder end faces are in contact, and radial thrust bearing outer ring upper surface is in contact with drive socket 17, and transmission collar is mounted on transmission
17 upper surface of sleeve.
Transmission ratio i=4 between the gear wheel 19 and pinion gear 10:1；The inner wall of the combustion chamber 38 is equipped with resistance wire
43, resistance wire 43 connects external power supply；Be between the valve retainer fixture 45 and base station 1 it is detachable be fixedly connected, such as
It can be fixed on base station 1 by multiple bolts 46 in the radial direction of valve retainer fixture 45；Combustion chamber 38 passes through bolt
It is fixed with base station 1.
A fixing bracket 18 is equipped between the screw rod 33 and supporting rod 6, fixing bracket 18 is used for screw rod 33 and clamping
Bar 6 is positioned；Supporting rod 6 is equipped with sleeve 11 with fixing bracket 18.
Valve moment impact mechanism includes sleeve, mandril 39, push rod 40, pusher motor 41；Under the mandril 39
End is placed in upper end in sleeve and stretches out sleeve and offset with valve disc 4-2 front end faces；The push rod 40 is mounted in sleeve,
Upper end corresponds to the lower end of mandril 39, and buffer spring 42 is arranged on the lower end of mandril 39；The lower end of push rod 40
Portion stretches out sleeve bottom and connects pusher motor 41.
The high-temperature fuel gas feed system includes fuel tank 29, the booster pump 27 of oil dropping apparatus supercharging, air blower 48, control switch
47, pulse igniter 36, nozzle 35, combustion tube 37；
The air blower 48 connects 38 input terminal of combustion chamber by the admission line 50 with a gas buffer screen pipe 49
The side wall of combustion tube 37；
The fuel tank 29 connects nozzle 35 by an oil pipeline 31 with servo valve 28, and 35 ejection section of nozzle is placed in combustion
It burns in pipe 37；Pulse igniter 36 is arranged on the side wall of combustion tube 37；Control the connection of switch 47 control servo valve 28 and pulse
Igniter 36 controls their ON/OFF；There is one piece of traverse 30 in the fuel tank 29, fuel tank 29 is divided to for two mutual not phases
Cavity room, upper chamber fill air, and lower chambers are charged.
A kind of secondary abrasion test method of Valve-valve seat circle friction is as follows：
Step 1：The secondary wear test step of Valve-valve seat circle friction under simulated combustion atmosphere, valve rotation operating mode：It watches
Taking motor 20 drives camshaft 15 to rotate, and cam is in contact with driver plate 14, and driver plate 14 is mounted on transmission collar 13,16,
Gear wheel 19 and valve 4 are transferred the motion to, valve 4 is opened, and screw reset spring 32 and supporting rod resetting spring 7 are pressed simultaneously
Contracting, gear wheel 19, also by from 33 rotary force of screw rod, generate rotation, to drive small tooth while stress moves downward
10 rotation of wheel, makes valve 4 generate rotary motion in opening process；In 15 return stroke of camshaft, valve 4 and gear wheel 19 divide
Do not rise under the action of screw reset spring 32 and supporting rod resetting spring 7, gear wheel 19 is similarly subjected to from screw rod 33
Rotary force and rotate so that valve 4 generate rotary motion；In valve 4 is closed and opens whole process, 19 He of gear wheel
Pinion gear 10 remain up and down moves synchronously, prevent two they generate relative motion in the vertical direction, to avoid generation
Harmful effect caused by frictional force on vertical direction rotates gear；It takes a seat moment in valve 4,41 driving push rod of pusher motor
40 move upwards, and so that mandril 39 (with a certain size power) is impacted valve 4 upwards and keep surge to valve next time
Moment is opened, the suffered gas pressure within the engine of valve 4 is simulated with this, is opened moment in valve 4, pusher motor 41 drives
Dynamic push rod 40 moves downward, and surge is cancelled, and at the same time, booster pump 27 continues to be pressed into 29 upper chamber of fuel tank empty
Gas, increases the pressure in fuel tank 29, and the input air into combustion tube 37 by admission line 50 of air blower 48 is taken a seat in valve 4
Moment, control switch 47 control servo valve 28 and open, and fuel enters oil pipeline 31 under air pressure, and is sprayed from nozzle 35
Go out, is mixed with the air inputted in admission line 50, meanwhile, control switch 47 controls pulse igniter 36 and lights fuel, generates
High-temperature fuel gas is input in combustion chamber 38, is simulated valve 4 and valve retainer 44 and is washed away and corrosion process by high-temperature fuel gas；
It is opened moment in valve 4, control switch 47 controls servo valve 28 and pulse igniter 36 is closed；Combustion chamber 38 generates
Tail gas pass through tail gas discharge chamber 2-1 successively, exhaust pipe 3 enters in exhaust collection case 2；Complete simulated combustion atmosphere, valve rotation
The secondary wear test of Valve-valve seat circle friction under condition of changing a job.
Simulation is without the secondary wear test step of Valve-valve seat circle friction under combustion atmosphere, valve rotation operating mode：Valve motion
Process is identical as step 1；Close booster pump 27, servo valve 28 and pulse igniter 36；Supplying heat source is changed by original combustion gas
It is heated at resistance wire 43, you can complete without the secondary wear test of Valve-valve seat circle friction under combustion atmosphere, valve rotation operating mode.
Simulation has combustion atmosphere, the valve test procedure that Valve-valve seat circle friction pair is not worn under the rotating condition：Combustion gas
It is identical as step 1 to supply control process；Remove gear wheel 19, you can completing valve, Valve-valve seat circle does not rub under the rotating condition
Wipe secondary wear test.
It simulates without the not experiment of the secondary abrasion of Valve-valve seat circle friction under the rotating condition of combustion atmosphere, valve：Close supercharging
Pump 27, servo valve 28 and ignition switch 36；Gear wheel 19 is removed, making supplying heat source into resistance wire 43 by original combustion gas heats,
No combustion atmosphere, the valve not secondary wear test of Valve-valve seat circle friction under the rotating condition can be completed.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other any Spirit Essences without departing from the present invention
With under principle made by changes, modifications, substitutions, combinations, simplifications, should be equivalent substitute mode, be included in the present invention
Within protection domain.
Claims (10)
1. a kind of secondary abrasion test device of Valve-valve seat circle friction, it is characterised in that：
Including base station (1), the combustion chamber (38) being mounted below base station (1), to the high-temperature fuel gas of combustion chamber (38) offer combustion gas
Feed system, the valve guide sleeve (4-1) being arranged on base station (1), the valve being arranged above valve guide sleeve (4-1) clamping
Cover (5), be arranged in valve retaining sleeve (5) for clamping air valve (4) valve stem tail portion supporting rod (6), setting in valve
The screw rod guide sleeve (34) of the screw rod (33) of the side guide sleeve (4-1), is mounted on the supporting rack (1-1) being arranged on base station (1)
The camshaft (15) that its rotation is driven by servo motor (20) on supporting rack (1-1)；
The valve disc (4-2) of the valve (4) is placed in combustion chamber (38), after valve guide sleeve (4-1) and valve disc (4-2)
A tail gas discharge chamber (2-1) is offered on access between end face, tail gas discharge chamber (2-1) connects tail gas by exhaust pipe (3)
Collecting box (2)；Valve disc (4-2) rear end face is additionally provided with a valve retainer fixture (45), valve retainer (44) interference fit
It sets within it；When valve disc (4-2) rear end face and valve retainer (44) offset, combustion chamber (38) and tail gas discharge chamber (2-
1) the access cut-out between, when valve disc (4-2) rear end face is detached with valve retainer (44), combustion chamber (38) are vented with tail gas
Access connection between chamber (2-1)；
It is suffered within the engine for simulating valve (4) that one is additionally provided in combustion chamber (38), below valve disc (4-2) front end face
The valve moment impact mechanism of gas pressure；
Screw rod guide sleeve (34) is stretched out in the upper end of the screw rod (33), and is equipped with gear wheel (19) on it；The clamping
Valve retaining sleeve (5) is stretched out in the upper end of bar (6), and is equipped with the pinion gear (10) engaged with gear wheel (19) on it；
It is separately installed with radial thrust bearing (22,25,9,12) on the top and middle part of screw rod (33) and supporting rod (6), and
It is respectively equipped with a transmission collar (13,16) above the radial thrust bearing on each top, one is equipped on transmission collar (13,16)
Driver plate (14), the cam contact of the upper surface and camshaft (15) of driver plate (14), when camshaft (15) rotate, cam is past
Driver plate (14) is pushed again, and reciprocal pushing torque is synchronized by transmission collar (13,16) and passes to screw rod (33) and clamping
Bar (6), make gear wheel (19) and pinion gear (10) follow screw rod (33) and supporting rod (6) synchronize pump, upper and lower
While reciprocating motion, screw rod (33) generates rotary force, and gear wheel (19) is with rotating with it under the action of rotary force, and will revolve
Turn power and pass to pinion gear (10), pinion gear (10) makes the head portion that of valve (4) fire while driving supporting rod (6) to rotate
It burns in room (38) and pumps in rotary manner.
2. the secondary abrasion test device of Valve-valve seat circle friction according to claim 1, it is characterised in that：The screw rod is led
Screw reset spring (32) is equipped with into set (34), for providing a upward thrust to screw rod (33)；The valve clamping
It covers and is equipped with supporting rod resetting spring (7) in (5), for providing a upward thrust to supporting rod (6).
3. the secondary abrasion test device of Valve-valve seat circle friction according to claim 1, it is characterised in that：The screw rod
(33) helical angle λ is more than angle of friction ρ, is non-self-lock-ing screw rod；Ball is installed between the gear wheel (19) and screw rod (33)
Nut (24), a supporting sleeve (23) is installed on the screw rod of gear wheel (19) upper surface, and radial thrust bearing is mounted on gear wheel
(19) on the screw rod of lower end, the radial thrust bearing inner ring is in contact with the head cover (26) of screw rod (33), on screw rod (33)
The sleeve (21) at end is mounted in supporting sleeve (23), and sleeve (21), radial thrust bearing inner ring lower end are passed through at the top of screw rod (33)
Face is in contact with supporting sleeve (23) shoulder end face, and radial thrust bearing outer ring upper surface is in contact with drive socket (17), transmission
Collar is mounted on drive socket (17) upper surface.
4. the secondary abrasion test device of Valve-valve seat circle friction according to claim 1, it is characterised in that：The gear wheel
(19) the transmission ratio i=4 between pinion gear (10):1；The inner wall of the combustion chamber (38) is equipped with resistance wire (43), resistance wire
(43) external power supply is connected；It is detachable be fixedly connected between the valve retainer fixture (45) and base station (1)；Combustion chamber
(38) fixed by bolt and base station (1).
5. the secondary abrasion test device of Valve-valve seat circle friction according to claim 4, it is characterised in that：The screw rod
(33) be equipped with a fixing bracket (18) between supporting rod (6), fixing bracket (18) be used for screw rod (33) and supporting rod (6) into
Row positioning；Supporting rod (6) is equipped with sleeve (11) with fixing bracket (18).
6. the secondary abrasion test device of Valve-valve seat circle friction according to claim 1, it is characterised in that：The valve wink
Between beater mechanism include sleeve, mandril (39), push rod (40), pusher motor (41)；The lower end of the mandril (39) is placed in set
Upper end stretches out sleeve and offsets with valve disc (4-2) front end face in cylinder；The push rod (40) is mounted in sleeve, thereon end
Corresponding to the lower end of mandril (39), and buffer spring (42) is arranged on the lower end of mandril (39)；Under push rod (40)
End stretches out sleeve bottom and connects pusher motor (41).
7. the secondary abrasion test device of Valve-valve seat circle friction according to claim 1, it is characterised in that：The high temperature combustion
Gas feed system includes fuel tank (29), the booster pump (27) of oil dropping apparatus supercharging, air blower (48), control switch (47), pulse point
Firearm (36), nozzle (35), combustion tube (37)；
The air blower (48) is defeated by admission line (50) connection combustion chamber (38) for carrying a gas buffer screen pipe (49)
Enter the side wall of end burning pipe (37)；
The fuel tank (29) connects nozzle (35), nozzle (35) ejection section by an oil pipeline (31) with servo valve (28)
It is placed in combustion tube (37)；Pulse igniter (36) is arranged on the side wall of combustion tube (37)；Control switch (47) connection control
Servo valve (28) and pulse igniter (36), control their ON/OFF；There is one piece of traverse (30) in the fuel tank (29),
Fuel tank (29) is divided into two not connected chambers, upper chamber fills air, and lower chambers are charged.
8. a kind of secondary abrasion test method of Valve-valve seat circle friction, it is characterised in that using any one of claim 1 to 7
The secondary abrasion test device of Valve-valve seat circle friction is realized, is specifically comprised the following steps：
Step 1：The secondary wear test step of Valve-valve seat circle friction under simulated combustion atmosphere, valve rotation operating mode：
Servo motor (20) drives camshaft (15) to rotate, and cam is in contact with driver plate (14), and driver plate (14), which is mounted on, to be passed
On dynamic collar (13,16), gear wheel (19) and valve (4) are transferred the motion to, valve (4) is opened,
It screw reset spring (32) and supporting rod resetting spring (7) while being compressed, gear wheel (19) is moved downward in stress
Meanwhile also rotation is generated, to drive pinion gear (10) to rotate, valve (4) is made to open by from screw rod (33) rotary force
Rotary motion is generated in the process；In camshaft (15) return stroke, valve (4) and gear wheel (19) are respectively in screw reset spring
(32) and under the action of supporting rod resetting spring (7) rise, gear wheel (19) be similarly subjected to from screw rod (33) rotary force and
Rotation, so that valve (4) generates rotary motion；In valve (4) is closed and opens whole process, gear wheel (19) and small
Gear (10) remain up and down moves synchronously, prevent two they generate relative motion in the vertical direction, to avoid generation
Harmful effect caused by frictional force on vertical direction rotates gear；
It takes a seat moment in valve (4), pusher motor (41) driving push rod (40) moves upwards, and mandril (39) is made to impact valve upwards
(4) and by surge it keeps to valve opening moment next time, valve (4) suffered gas within the engine is simulated with this
Pressure opens moment in valve (4), and pusher motor (41) driving push rod (40) moves downward, surge is cancelled, same with this
When, booster pump (27) continues to be pressed into air into fuel tank (29) upper chamber, increases the pressure in fuel tank (29), and air blower (48) is logical
Admission line (50) input air into combustion tube (37) is crossed, is taken a seat moment in valve (4), control switch (47) controls servo valve
(28) it opens, fuel enters oil pipeline (31) under air pressure, and sprays from the nozzle (35), and in admission line (50)
The air of input mixes, meanwhile, control switch (47) control pulse igniter (36) lights fuel, generates high-temperature fuel gas and is input to
In combustion chamber (38), simulation valve (4) and valve retainer (44) are washed away and corrosion process by high-temperature fuel gas；
It is opened moment in valve (4), control switch (47) control servo valve (28) and pulse igniter (36) are closed；Combustion chamber
(38) tail gas generated passes through tail gas discharge chamber (2-1) successively, exhaust pipe (3) enters in exhaust collection case (2)；Complete simulation combustion
Burn the secondary wear test of Valve-valve seat circle friction under atmosphere, valve rotation operating mode.
9. the secondary abrasion test method of Valve-valve seat circle friction according to claim 8, it is characterised in that further include a mould
Intend without the secondary wear test step of Valve-valve seat circle friction under combustion atmosphere, valve rotation operating mode：
Valve motion process is identical as step 1；Close booster pump (27), servo valve (28) and pulse igniter (36)；
Supplying heat source is made into resistance wire (43) heating by original combustion gas, you can complete without under combustion atmosphere, valve rotation operating mode
The secondary wear test of Valve-valve seat circle friction.
10. the secondary abrasion test method of Valve-valve seat circle friction according to claim 8, it is characterised in that further include as follows
Two test procedures：
One is to simulate to have combustion atmosphere, the valve test procedure that Valve-valve seat circle friction pair is not worn under the rotating condition：Combustion
It is identical as step 1 that gas supplies control process；Remove gear wheel (19), you can complete valve not Valve-valve seat under the rotating condition
The secondary wear test of circle friction；
The other is simulation is without the not experiment of the secondary abrasion of Valve-valve seat circle friction under the rotating condition of combustion atmosphere, valve：It closes
Booster pump (27), servo valve (28) and pulse igniter (36)；Gear wheel (19) is removed, supplying heat source is made by original combustion gas
Resistance wire (43) heats, you can completes without the not secondary abrasion examination of Valve-valve seat circle friction under the rotating condition of combustion atmosphere, valve
It tests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304377.5A CN105865960B (en) | 2016-05-09 | 2016-05-09 | A kind of secondary abrasion test method of Valve-valve seat circle friction and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304377.5A CN105865960B (en) | 2016-05-09 | 2016-05-09 | A kind of secondary abrasion test method of Valve-valve seat circle friction and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105865960A CN105865960A (en) | 2016-08-17 |
| CN105865960B true CN105865960B (en) | 2018-09-14 |
Family
ID=56631692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610304377.5A Expired - Fee Related CN105865960B (en) | 2016-05-09 | 2016-05-09 | A kind of secondary abrasion test method of Valve-valve seat circle friction and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865960B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560861A (en) * | 2017-10-20 | 2018-01-09 | 安徽工程大学 | A kind of double friction pair composite analogy experimental systems of valve actuating mechanism |
| CN108507893B (en) * | 2018-03-28 | 2021-04-27 | 长江大学 | Erosion device and sample erosion wear rate measuring apparatus |
| CN109883715B (en) * | 2019-03-01 | 2024-07-02 | 华南理工大学 | Engine valve-guide pipe-oil seal abrasion testing device and comprehensive testing device |
| CN111175039B (en) * | 2020-03-06 | 2021-02-09 | 常熟理工学院 | Fatigue testing device and method for engine valve and valve seat ring |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202267430U (en) * | 2011-10-19 | 2012-06-06 | 常熟理工学院 | Engine valve guide pipe abrasion measuring device |
| CN102829962A (en) * | 2012-08-14 | 2012-12-19 | 杭州电子科技大学 | Quick wear test device of engine valve seat ring |
| CN103147818A (en) * | 2013-02-28 | 2013-06-12 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
| CN103291450A (en) * | 2012-02-24 | 2013-09-11 | 刘素华 | Method for rolling friction or suspending friction of piston of engine and engine with abrasion-proof piston adopting method |
| CN203809076U (en) * | 2014-05-05 | 2014-09-03 | 王欣亮 | Electro-hydraulic valve for engine |
| CN104198189A (en) * | 2014-08-13 | 2014-12-10 | 华南理工大学 | Testing apparatus of engine valve mechanism rack |
| CN204514740U (en) * | 2015-04-09 | 2015-07-29 | 华南理工大学 | A kind of valve wear test unit |
| CN104833602A (en) * | 2015-04-09 | 2015-08-12 | 华南理工大学 | Air valve abrasion testing device |
| CN205844114U (en) * | 2016-05-09 | 2016-12-28 | 华南理工大学 | A kind of valve valve retainer friction pair abrasion test device |
-
2016
- 2016-05-09 CN CN201610304377.5A patent/CN105865960B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202267430U (en) * | 2011-10-19 | 2012-06-06 | 常熟理工学院 | Engine valve guide pipe abrasion measuring device |
| CN103291450A (en) * | 2012-02-24 | 2013-09-11 | 刘素华 | Method for rolling friction or suspending friction of piston of engine and engine with abrasion-proof piston adopting method |
| CN102829962A (en) * | 2012-08-14 | 2012-12-19 | 杭州电子科技大学 | Quick wear test device of engine valve seat ring |
| CN103147818A (en) * | 2013-02-28 | 2013-06-12 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
| CN203809076U (en) * | 2014-05-05 | 2014-09-03 | 王欣亮 | Electro-hydraulic valve for engine |
| CN104198189A (en) * | 2014-08-13 | 2014-12-10 | 华南理工大学 | Testing apparatus of engine valve mechanism rack |
| CN204514740U (en) * | 2015-04-09 | 2015-07-29 | 华南理工大学 | A kind of valve wear test unit |
| CN104833602A (en) * | 2015-04-09 | 2015-08-12 | 华南理工大学 | Air valve abrasion testing device |
| CN205844114U (en) * | 2016-05-09 | 2016-12-28 | 华南理工大学 | A kind of valve valve retainer friction pair abrasion test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105865960A (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105865960B (en) | A kind of secondary abrasion test method of Valve-valve seat circle friction and device | |
| CN205844114U (en) | A kind of valve valve retainer friction pair abrasion test device | |
| CN105716851B (en) | A kind of valve rotation fatigue bending machine | |
| CN106918523B (en) | Double-row valve-valve seat ring wear test device and method | |
| CN104833602B (en) | A kind of valve wear test device | |
| CN105445124B (en) | A kind of valve high temperature fatigue testing machine | |
| CN110726559B (en) | Combustion performance test bench for internal combustion engine based on rapid compression/compression expansion machine | |
| CN106930826B (en) | Rotary engine | |
| CN102175967A (en) | Automobile reading lamp key detection device and automobile reading lamp key and tap position detection device | |
| CN104165816B (en) | A kind of valve and valve retainer abrasion tester | |
| CN106968786B (en) | Rotary engine and automobile | |
| CN103913311A (en) | Device for testing starting characteristic of engine | |
| CN104929769A (en) | Non-crankshaft engine with air cylinder contraposition device | |
| CN204514741U (en) | A kind of valve wear proving installation | |
| CN103249928B (en) | Can be used as the engine of power source or pump | |
| CN102507162A (en) | Reliability test device for single-station engine rocker arm assembly | |
| CN106239543A (en) | A kind of superfine pipe diameter heat-transfer pipe of evaporator tube sheet many fingers locking gas pawl | |
| CN205620113U (en) | Valve rotational bending fatigue testing machine | |
| CN107774745B (en) | A kind of plates of automobile deformed steel flat prosthetic device | |
| CN201955450U (en) | Vehicle reading lamp key detecting device and vehicle reading lamp key and gear shift detecting device | |
| CN201236731Y (en) | Fuel-economizing light-load valve actuating mechanism for internal-combustion engine | |
| CN202194725U (en) | Cold running-in stand for engine | |
| US1502244A (en) | Engine | |
| CN202255861U (en) | Reliability experimental apparatus for single work position motor rocker assembly | |
| CN203730102U (en) | Waste gas heat cycle power generation system with engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 |