CN208476930U - Engine oil valve system abrasion resistance test bench - Google Patents
Engine oil valve system abrasion resistance test bench Download PDFInfo
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- CN208476930U CN208476930U CN201820908211.9U CN201820908211U CN208476930U CN 208476930 U CN208476930 U CN 208476930U CN 201820908211 U CN201820908211 U CN 201820908211U CN 208476930 U CN208476930 U CN 208476930U
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- cooling water
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- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 239000010705 motor oil Substances 0.000 title claims abstract description 37
- 238000005299 abrasion Methods 0.000 title abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 239000000498 cooling water Substances 0.000 claims abstract description 61
- 239000003921 oil Substances 0.000 claims abstract description 31
- 239000000446 fuel Substances 0.000 claims abstract description 22
- 239000010721 machine oil Substances 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 40
- 238000005070 sampling Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000000295 fuel oil Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract 2
- 238000011056 performance test Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 10
- 239000010711 gasoline engine oil Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
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- 238000010168 coupling process Methods 0.000 description 3
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- 239000010687 lubricating oil Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- SCJNCDSAIRBRIA-DOFZRALJSA-N arachidonyl-2'-chloroethylamide Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCCl SCJNCDSAIRBRIA-DOFZRALJSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000012864 cross contamination Methods 0.000 description 1
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- Testing Of Engines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
An engine oil valve system anti-wear performance test bench comprising: the device comprises a dynamometer, an engine, a fuel detection module, a cooling water heat exchanger, an engine oil heat exchanger, a multi-channel water path circulating cooling pipeline and a temperature acquisition feedback control unit. The engine is connected with the dynamometer through an elastic connecting shaft, the roller bearing rocker arm assembly is installed on a cam seat of the engine, and a fuel flow meter and a fuel temperature controller of the fuel detection module are connected with a fuel pipeline of the engine; the cooling water heat exchanger is connected with the engine; the engine oil heat exchanger is connected with a main oil way of the engine; the multi-channel water path circulating cooling pipeline is used for carrying out heat exchange on the dynamometer, the cooling water heat exchanger and the engine oil heat exchanger; the temperature acquisition feedback control unit acquires and adjusts the temperatures of the cooling water heat exchanger and the engine oil heat exchanger. Adopt the utility model discloses a test bench test is simple, accurate, oil-saving, save time, obtains the good and bad trend of formula abrasion resistance in shorter time.
Description
Technical field
The utility model relates to a kind of engine oil valve system wear resistance testboard bays, are especially applied to gasoline engine
Abrasion resistance evaluation of the machine lubricating oil under cryogenic conditions or low engine speed large torque operating condition.
Background technique
Engine valve system wear evaluation method disclosed in foreign countries has the program IVA rack and ACEA of API gasoline engine oil specification
The TU3M/KDX rack of light load engine oil specification.Program IVA belongs to ASTM D6891 method, uses the 2.4L of production in 1994
Tetra- stroke water-cooled engine of Nissan KA24E, 12 valve of SOHC Single Over Head Camshaft slides follower rocking arm, operating condition of test point
For two stages, engine speed is respectively 800 and 1000 revs/min, torque 25Nm, oil temperature 49 and 59 degree, coolant liquid temperature
50 DEG C and 55 DEG C of degree, test period 100h.After the test with pattern instrument measurement cam abrasion, and measure the iron in machine oil and
Copper content, the wear resistance of overall merit machine oil.TU3M/KDX rack belongs to CEC L-38-94 method, using PSA 1.3L's
Tetra- stroke water-cooled engine of TU3M, single overhead cam slide follower rocking arm, and operating condition of test is divided into two stages, revolving speed difference
It is 1500 and 3000 revs/min, torque 10Nm and 35Nm, oil temperature 40 and 100 degree, 45 DEG C and 90 DEG C of coolant temperature, test
Time 100h.It scores after the test the scratch situation of rocker arm plate frictional contact surface, measures the convex peak mill of 8 cams
Damage analyzes the iron content in machine oil, the wear resistance of overall merit machine oil.
The abrasion resistance of engine lubricating oil is its important performance, generally uses friction wear testing machine simulation or starts
Machine frame carries out test evaluation.The development of high-grade engine oil needs to meet some performance indicator requirements, the development process of formula
In, the simulation tests such as wear resistance performance constantly are carried out to formula, understand formulation trends and performance indicator is screened,
The test equipment of this respect mainly has four-ball tester, SRV, MTM etc., these testing equipments are as simulation test equipment, test
Condition and the actual use working condition difference of engine are larger, grind suitable for the screening and assessment of oil formula and the basis of single dose
Study carefully, is not suitable for the abrasion resistance evaluation of engine oil.The main friction pairs of engine include crankshaft and bearing shell, Piston volume tube or cylinder
Set, cam and tappet etc..Automobile stop to stop out in urban road with the engine under low temperature low speed operating condition, for cam
The anti-wear protection of tappet is harsher.Therefore, this patent proposes a kind of petrol engine using roller rocker arm friction auxiliary structure
Wear resistance test stand system and method under low oil temperature condition or low engine speed large torque operating condition.
Utility model content
The main purpose of the utility model is to provide an engine oil valve system wear resistance testboard bay, the rack
Test it is simple, testing expenses are low, performance assessment criteria is accurate and reliable.
Based on above-mentioned purpose, a kind of engine oil valve system wear resistance testboard bay of the utility model includes:
One dynamometer machine；
One engine is connect by an elastic connection axis with the dynamometer machine, and the engine is equipped with roller bearing
Rocker arm assembly, the roller bearing rocker arm assembly are mounted on the cam chair of the engine；
One fuel testing module, including fuel flow instrument and fuel oil temperature controller, the fuel flow instrument and fuel oil temperature controller
It is connect with the fuel line of the engine；
One cooling water heat exchanger, the cooling water heat exchanger are connected with the engine；
One machine oil heat exchanger, the machine oil heat exchanger are connect with the working connection of the engine；
Multichannel waterway circulating cooling line, it is in parallel between the multichannel waterway circulating cooling line and respectively with measurement of power
Machine, cooling water heat exchanger, machine oil heat exchanger are correspondingly connected with, and are passed through with previous dynamometer machine, cooling water heat exchanger, machine oil heat exchanger cold
But water carries out heat exchange；
One acquires and adjusts the temperature acquisition feedback control unit of the cooling water heat exchanger and the machine oil heat exchanger, with
The cooling water heat exchanger, the connection of machine oil heat exchanger.
In an embodiment, the temperature acquisition feedback control unit further comprises two PID control valves, temperature control
Module and two temperatures sensor, the two PID control valves be connected respectively with the cooling water heat exchanger and the machine
The waterway circulating cooling line of oil heat exchanger connection, the two temperatures sensor is connected respectively to exchange heat with the cooling water
In the waterway circulating cooling line that device is connected with the machine oil heat exchanger, the temperature control modules are controlled with two PID respectively
Valve processed, two temperatures sensor connection, the temperature control modules acquire the temperature of the temperature sensor, while two PID
Control valve adjusts waterway circulating cooling line accordingly respectively to control the temperature of cooling water and machine oil to meet high and low temperature operating condition
Experiment.
In an embodiment, the temperature acquisition feedback control unit is additionally provided with two shut-off valves, the two shut-off valve difference
It is correspondingly connected in the waterway circulating cooling line being connect with the cooling water heat exchanger and the machine oil heat exchanger, it is each described
PID control valve configures the shut-off valve, and the PID control valve is corresponding with the shut-off valve to be connected in series.
It include an inlet pipeline and a water return pipeline, institute per the waterway circulating cooling line described all the way in an embodiment
It states inlet pipeline, water return pipeline and accesses the integrated disk group of a quick coupling, to realize the rapid abutting joint of pipeline, with the cooling
The water return pipeline of water- to-water heat exchanger connection is equipped with flow meters, and the shut-off valve, the PID control valve are installed in the return water
On pipeline.
In an embodiment, the cooling water heat exchanger is connect with a compress wind line, and the compress wind line is equipped with compress wind
Pressure sensor.
In an embodiment, the oil sump of the engine is provided with check valve-type sampling valve, in the engine
Machine oil sampling is carried out in operation process.
In an embodiment, setting plus insulating layer in the oil sump.
In an embodiment, the cooling water heat exchanger uses expansion type water tank, and the cooling water heat exchanger includes cooling
Water- to-water heat exchanger ontology and liquid reserve tank, the cooling water heat exchanger are additionally provided with a liquidometer, and the liquidometer is mounted in liquid reserve tank.
In an embodiment, the multichannel waterway circulating cooling line, which summarizes, is connected to a total waterway circulating cooling line
On, temperature sensor, pressure sensor are equipped in total waterway circulating cooling line.
In an embodiment, the roller bearing rocker arm assembly further comprises: a rocker arm shaft, multiple rocker arm shafts are fixed
Frame, multiple inlet rocker arms and multiple exhaust valve rocker arms, the rocker arm shaft are fixed on institute by the multiple rocker arm shaft holder
It states in the cam chair of engine, is interval setting, the inlet rocker arm and the exhaust between the rocker arm shaft holder
Valve rocker arm is arranged on the rocker arm shaft, is mounted on the inlet rocker arm, exhaust between any two rocker arms shaft holder
Valve rocker arm.
In an embodiment, to be arranged at equal intervals between the rocker arm shaft holder, every two rocker arm shaft holder it
Between be respectively mounted the exhaust valve rocker arm and the inlet rocker arm.
Wear resistence of the engine oil valve system wear resistance testboard bay of the offer of the utility model to gasoline engine oil
It can be carried out evaluation, test is simple, accurate, fuel-efficient, time saving, obtains the superiority and inferiority trend of formula abrasion resistance in a relatively short period of time.
The gantry designs are reasonable, compact-sized, simple to operate, high degree of automation, and preferable simulated automotive stops in urban road
It stops out and low temperature low speed operating condition.Pass through setting test parameters and monitor the torque of engine, revolving speed, engine oil pressure and
The parameters such as temperature, cooling water temperature and flow measure iron content in the abrasion loss and machine oil of roller rocker arm, and it is wear-resistant to complete oil product
Performance evaluation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of engine oil valve system wear resistance testboard bay.
Fig. 2, the structural schematic diagram of roller bearing rocker arm assembly.
Wherein appended drawing reference are as follows:
Dynamometer machine 1
Elastic connection axis 2
Engine 3
Engine support 4
Cooling water heat exchanger 5
Flowmeter 6
Machine oil heat exchanger 7
Quick coupling integrates disk group 8
Fuel flow instrument 9
Fuel oil temperature controller 10
Air leak amount instrument 11
Temperature control modules 12
Compress wind line 13
PID control valve 14,15
Pressure regulator valve 16
Shut-off valve 17,18,20,21,23,24,27
Cross-line valve 19,26
Flow control valve 22,25
Oil sump 31
Check valve-type sampling valve 32
First via waterway circulating cooling line 33
Second road waterway circulating cooling line 34
Third road waterway circulating cooling line 35
Water return pipeline 331,341,351
Inlet pipeline 332,342,352
Secondary total water return pipeline 36
Total water return pipeline 37
Water inlet manifold road 38
Temperature sensor T1, T2, T3, T4
Pressure sensor P1~P3
Liquid level alarm 51
Roller bearing rocker arm assembly 60
Rocker arm shaft 601
Fixed frame 602
Inlet rocker arm 603
Exhaust valve rocker arm 604
Mounting hole 6041
Valve clearance adjusting nut 6042
Screw 6043
Specific embodiment
Detailed description and technology contents in relation to the utility model, cooperation schema are described as follows:
Fig. 1 to Fig. 2 is please referred to, the utility model provides a kind of engine oil valve system wear resistance testboard bay, includes:
Dynamometer machine 1, engine 3, fuel testing module, cooling water heat exchanger 5, machine oil heat exchanger 7, multichannel waterway circulating cooling line,
Temperature acquisition feedback control unit.
The dynamometer machine 1 is connected by elastic connection axis 2 with engine 3, and dynamometer machine 1 is used for the function of test engine 3
Rate, engine 3 are supported by engine support 4 and are fixed, and engine 3 is equipped with roller bearing rocker arm assembly, the roller bearing
Rocker arm assembly is installed on engine cam seat (not marking in figure), in this present embodiment, using the in-line 4 cylinder water cooling gasoline of 1.3L
Engine carries out gantry designs as testing machine, using roller bearing rocker arm assembly 60, Single Over Head Camshaft as testpieces,
Engine evaluated oil valve system wear resistance.By testing the wear weight loss of roller rocker arm, contact surface abrades situation and machine oil
Middle iron content evaluates the abrasion resistance of machine oil.
Engine 3 and the closed circuit connection of cooling water heat exchanger 5, the external compress wind line 13 of cooling water heat exchanger 5, the compression
Wind line is equipped with pressure sensor P1 and pressure regulator valve 16, and referring to Fig.1, in this present embodiment, the cooling water heat exchanger 5 is one cold
But liquid water tank is integrated with the function of cooling water heat exchanger and liquid reserve tank.The coolant liquid water tank uses expansion type water tank, described cold
But liquid water tank includes cooling water heat exchanger ontology and liquid reserve tank, and water- to-water heat exchanger ontology is mounted in liquid reserve tank, liquidometer setting
In the liquid reserve tank.The machine oil heat exchanger 7 is connect with the working connection of the engine.
Referring to Fig.1, in this present embodiment, which has three road waterway circulating cooling lines, first via water
Road circulating cooling pipeline 33 is directly connect with the dynamometer machine 1, and the second road waterway circulating cooling line 34 passes through the cooling water
Heat exchanger is connected with the engine, and third road waterway circulating cooling line 35 passes through the machine oil heat exchanger and the engine
Connection.It referring to Fig.1, include an inlet pipeline and a water return pipeline, the water inlet pipe per the waterway circulating cooling line described all the way
Road, water return pipeline access a quick coupling and integrate disk group 8, to realize the rapid abutting joint of pipeline, pipeline neat appearance.Low temperature
Chilled water enters the cooling water to engine cooling in engine, after absorbing heat by the inlet pipeline through cooling water heat exchanger
It is discharged again by the water return pipeline through cooling water heat exchanger.
Referring to Fig.1, in this present embodiment, temperature acquisition feedback control unit acquires and adjusts the cooling water heat exchanger 5
With the temperature of the machine oil heat exchanger 7, which connects with the cooling water heat exchanger, machine oil heat exchanger respectively
It connects.The temperature acquisition feedback control unit further comprises two PID control valves 14,15, two temperatures sensor T1, T4, two institutes
State PID control valve be connected respectively it is cold in the waterway circulating being connect with the cooling water heat exchanger and the machine oil heat exchanger
But on the water return pipeline of pipeline, described two temperatures sensor T1, T4 be connected respectively with the cooling water heat exchanger and institute
On the water return pipeline for stating the waterway circulating cooling line of machine oil heat exchanger connection, the temperature control modules are respectively with described two
PID control valve, two temperatures sensor connection, the temperature control modules 12 acquire the temperature of the temperature sensor, together
When two PID control valves rapidly adapt to adjust according to required temperature case.The temperature acquisition feedback control unit is additionally provided with two
Shut-off valve, two shut-off valve are connected respectively in the water route connecting with the cooling water heat exchanger and the machine oil heat exchanger
Circulating cooling pipeline, each PID control valve configure the shut-off valve, and the PID control valve is corresponding with the shut-off valve
It is connected in series, by the quick adjusting of PID, reaches the high temperature or low temperature test operating condition of platform experiment demand, and then simulate the summer in winter
The limiting temperature condition of automobilism.
Referring to Fig.1, the water return pipeline connecting with the cooling water heat exchanger is equipped with flow meters, the shut-off valve, institute
PID control valve is stated to be installed on the water return pipeline.The first via waterway circulating cooling line 33, the second road waterway circulating
Cooling line 34, third road waterway circulating cooling line 35, which summarize, to be connected in a total waterway circulating cooling line, all
Inlet pipeline confluence enters on the water inlet manifold road 38 of total waterway circulating cooling line, and all water return pipeline confluences enter total water
On total water return pipeline of road circulating cooling pipeline.
Temperature sensor, pressure sensor are equipped in total waterway circulating cooling line.In this present embodiment, described
341 are equipped with flowmeter 6, shut-off valve 17, PID control valve 14 and temperature on the water return pipeline of second road waterway circulating cooling line 34
Sensor T1 is spent, which is mounted between engine and the cooling water heat exchanger, and being provided with flowmeter 6 ensures to try every time
In the coolant rate control OK range tested.Shut-off valve 17, PID control valve 14 are mounted on the downstream of the cooling water heat exchanger,
Shut-off valve 18, PID control valve 15 are equipped on the water return pipeline of third road waterway circulating cooling line 35.In third road water
The inlet pipeline 352 of road circulating cooling pipeline 35 is equipped with temperature sensor T4, in the water inlet manifold of waterway circulating cooling line
Road 38 is equipped with temperature sensor T3 and pressure sensor P3, and temperature is equipped on total water return pipeline of waterway circulating cooling line
Sensor T2 and pressure sensor P2.
Cryogenic freezing water lines pass through the first via waterway circulating cooling line 33, second road waterway circulating respectively
Cooling line 34, the third road waterway circulating cooling line 35 lead to dynamometer machine 1, cooling water heat exchanger and machine oil heat exchange
Device, and in the first via waterway circulating cooling line 33, the second road waterway circulating cooling line 34, third road water
On road circulating cooling pipeline 35 be arranged shut-off valve 20, shut-off valve 21, shut-off valve 23, shut-off valve 24, shut-off valve 27, cross-line valve 19,
Cross-line valve 26 and flow control valve 22,25, in this present embodiment, the return pipe of the second road waterway circulating cooling line 34
The water return pipeline 351 of road 341 and the third road waterway circulating cooling line 35 converges into secondary total water return pipeline 36, secondary total return water
Pipeline 36 is connected to total water return pipeline 37, draws one side branch, the other end connection on the collateral branch road from this total water return pipeline 36
To water inlet manifold road 38, which is mounted on collateral branch road, which is mounted on time total water return pipeline 36
Above and at the downstream at the leading point of collateral branch road, which is mounted on time total water return pipeline 36 and is located at collateral branch's pass
Upstream end at point out, i.e. flow control valve 22 and shut-off valve 23 are located at the two sides at the leading point of collateral branch road.In the first via
A cross-line is drawn between the inlet pipeline 332 and water return pipeline of waterway circulating cooling line 33, cross-line valve 26 is set on the cross-line,
Shut-off valve 24 and flow control valve 25 are installed on the water return pipeline 331 of first via waterway circulating cooling line 33,24 He of shut-off valve
Flow control valve 25 is located at the two sides at cross-line extraction, and shut-off valve 27 installs the water inlet pipe of first via waterway circulating cooling line 33
On road 332, at the downstream at cross-line extraction.Depending on upstream that the application mentions, downstream are the flow direction based on water flow,
See water (flow) direction arrow direction in figure (arrow direction is water (flow) direction).
Referring to Fig.1, which is also connected with a fuel testing module, and fuel testing module includes fuel flow instrument 9 and combustion
The fuel line of oily temperature controller 10, engine is connect with fuel flow instrument 9, fuel oil temperature controller 10, realizes the temperature control of fuel oil
It is measured with oil consumption, the crankcase gas blowby pipeline of engine 3 is connect with air leak amount instrument 11, realizes crankcase ventilation and piston air leak amount
Monitoring, realize monitoring to engine operating state.
In simulated automotive actual temperature operating condition, the normally opened setting of engine thermostat, cooling water heat exchanger by water at low temperature into
Row heat exchange, and PID control valve 14 and shut-off valve 17 are set, setting temperature control modules 12 acquire the temperature that T1 temperature carries out coolant liquid
Degree control, can carry out simulated automotive actual temperature operating condition in high and low temperature.It is tested in gasoline engine oil valve system's wear resistance
In, compress wind leads to coolant liquid water tank, need to be passed through 1.4bar compress wind, and coolant line is made to generate certain pressure, is greater than one
Atmospheric pressure 1.0bar can prevent coolant liquid high-boiling, and compress wind is led in closed coolant line can be improved coolant liquid
Using temperature, pipeline can also be made to establish certain pressure, platform system can do hot test, and coolant liquid controls 110 degree or so.
It is noted that the oil sump 31 of engine 3 is provided with check valve-type sampling valve 32, make engine operation process
In can be realized sampling to machine oil, harvester oil samples, the object of platform experiment is exactly machine oil, and periodic sampling analyzes machine oil
Physical and chemical index.Oil sump 31 is transformed, and is added insulating layer, and be isolated with exhaust pipe, is prevented heat exchange, makes up to control
The test demand that machine oil is run in lower temperature.The temperature control of 12 temperature collection sensor T4 of temperature control modules progress machine oil
System.
The roller bearing rocker arm assembly 60 further comprises: a rocker arm shaft 601, multiple rocker arm shaft holders 602, more
A inlet rocker arm and multiple exhaust valve rocker arms, the rocker arm shaft 601 are fixed on institute by the multiple rocker arm shaft holder 602
It states in the cam chair of engine, is interval setting, the inlet rocker arm and the row between the rocker arm shaft holder 602
Valve rocker arm is arranged on the rocker arm shaft 601, is mounted on the intake valve between any two rocker arms shaft holder 602 and is shaken
Arm, exhaust valve rocker arm.In this present embodiment, to be arranged at equal intervals between the rocker arm shaft holder 602, every two rocker arm shaft
An exhaust valve rocker arm 604 and an inlet rocker arm 603 are respectively mounted between fixed frame 602, in one specific embodiment of the utility model
In, which is four-cylinder, is equipped with 4 inlet rocker arms and 4 exhaust valve rocker arms accordingly.
Exhaust valve rocker arm 604 or inlet rocker arm 603 are being vented by connecting in valve spring, gasket and rocker arm shaft 601
Mutually isostructural valve clearance adjustment component, being somebody's turn to do on exhaust valve rocker arm 604 are equipped on valve rocker arm 604, inlet rocker arm 603
Valve clearance adjusts component and includes a mounting hole 6041, a valve clearance adjusting nut 6042 and adjust spiral shell with valve clearance
The screws 6043 that mother 6042 is cooperatively connected, in the present embodiment, valve clearance adjusting nut 6042, with screw 6043 and the mounting hole
6041 are spirally connected connection, adjust connection by adjusting the nut 6042, in breathing action, valve spring, gasket play interval
Effect, and exhaust valve rocker arm 604 and inlet rocker arm 603 is made to play damping in running shake along rocker arm shaft 601 that work
Reset response, if without spring, using hardware space, it may occur that abrasion and vibration.The rocker arm roller end of inlet and outlet valve rocker arm with
Camshaft contact, the valve clearance adjusting nut 6042 of the other end of inlet and outlet valve rocker arm and inlet and outlet valve rocker arm into, row
Air valve stem contact, inlet and outlet valve is realized by prefabricated valve spring closes valve, the rocker arm roller of inlet and outlet valve rocker arm and
The contact pressure of cam is spring compression force.The variation of compressing force can be realized by the type of change spring.Such as: compression
When power 200N, when spring heights 37.2mm, compressing force 470N, spring heights 28.3mm.It can be pressed by weight beam
The measurement of force-stroke and compressing force.The adjusting of valve clearance can be realized by valve gap adjustment adjusting nut 6042.Generally
Inlet and outlet door gap setting is 0.2mm and 0.4mm.
In the present embodiment, engine inlet and outlet valve rocker arm is that the power for being used to transmit on cam changes nyctitropic lever,
Valve rod end is applied to push engine valve open by the power that intake and exhaust rocker arm is discharged.In engine operation process, intake and exhaust
Rocker arm is always at high speed reciprocating motion.The camshaft of engine driving engine and the rocker arm roller end in contact of exhaust valve rocker arm are made
With under the action of camshaft and push rod and valve spring, exhaust valve rocker arm or inlet rocker arm 603 periodically play on or off
Close intake and exhaust channel, so that fresh air is entered cylinder, and the exhaust gas after burning is discharged out of cylinder, realize working cycles in into
Exhaust effect.
In the utility model engine use roller rocker-arm single overhead cam valve actuating mechanism, engine be small displacement from
Right air suction type roller rocker arm petrol engine, the normally opened setting of engine thermostat, coolant liquid circulating pipe system are provided with flow
Meter and throttling set.
In this present embodiment, check valve-type sampling valve is arranged in 31 low spot of engine sump tank, makes in engine operation process
It can be realized sampling, oil sump 31 is transformed, and is added insulating layer, and be isolated with exhaust pipe, is prevented heat exchange, make up to
The test demand that control machine oil is run in lower temperature.
It is noted that coolant liquid water tank is heat exchanger and liquid reserve tank integrated device integrated heat exchanger and coolant liquid liquid storage
The function of case, and pressure sensor and liquid level alarm are set, coolant liquid water tank uses expansion type water tank, and coolant liquid water tank is external
The compress wind line, compress wind line are equipped with pressure regulator valve 16, and by 16 pressure regulation of pressure regulator valve to 1.4bar or so, it is ensured that coolant liquid is followed
Ring compression.Second coolant liquid circulation loop is provided with flowmeter 6 and throttling set, the normally opened setting of engine thermostat, cooling water
Heat exchanger is exchanged heat by water at low temperature, and PID control valve is arranged, and simulation actual temperature operating condition can be carried out in high and low temperature,
The circuit design of Highgrade integration has temperature-responsive fast, control range is accurate compared to traditional water-cooling apparatus.
Coolant liquid water tank coolant liquid water tank is for evaluating gasoline engine oil in cryogenic conditions or low engine speed large torque operating condition
Under abrasion resistance evaluation, stopped out and the engine oil under low temperature low speed operating condition for stopping in simulated automotive urban road
Abrasion resistance evaluation.
In this present embodiment, the external computer control system of engine oil valve system wear resistance testboard bay, the meter
The test procedure that the test of gasoline engine oil valve system's wear resistance is loaded in machine control system is calculated, specifically, computer control system
System is electrically connected with temperature control modules, acquires and monitor oil temperature, the coolant liquid of the engine of temperature control modules acquisition
The operating parameters such as temperature, simultaneous computer control system connect and control engine, acquisition and prison with the ECU module of the engine
Other operating parameters of engine are controlled, the operating parameter of engine includes engine speed, coolant temperature, oil temperature, torsion
Square etc..
To measure wear resistance difference of the different machine oil under same experimental condition, need the operating parameter of engine complete
Complete consistent, whether computer control system is under preset value to the parameter of the engine during detecting entire test, if
Not under preset operational parameter value, alarm system starting, it should be noted that needed to change when the test of other oil samples
Roller bearing rocker arm assembly and camshaft.
Spy lifts following examples, and the test process of the engine oil valve system wear resistance testboard bay of the application is as follows:
The installation of engine is carried out first, specifically, to completely new roller bearing rocker arm assembly 60 and completely newly convex
Wheel shaft carries out cleaning measurement, and roller bearing rocker arm assembly 60 is installed on engine cam seat, and adjust inlet and exhaust valve
Gap is 0.2mm and 0.4mm.With test oil flushing engine system, oil liquid cross contamination is prevented, test oil is using to be measured herein
Machine oil, after system clean, Drain rinse oil replaces oil filter.
Secondly, connection fuel testing module, cooling water heat exchanger, machine oil heat exchanger 7, multichannel waterway circulating cooling line,
The crankcase gas blowby pipeline of engine 3 is connect by temperature acquisition feedback control unit with air leak amount instrument 11, fuel consumption meter, is closed single
To valve type sampling valve oil sump 3132, test stand system No leakage is checked, 3.25L machine oil to be measured is injected into engine, to
Coolant liquid water tank injects coolant liquid, reaches suitable position, closes coolant liquid tank lid, starts liquid level alarm 51, connects compression
Wind line adjusts pressure to 1.4bar.
Start rack subsystem, including cooling water refrigeration unit, cooling water pump, air intake/outtake system, fuel oil tank outlet
Refrigeration unit control temperature is set as needed in valve etc., generally sets the freezing temperature of refrigeration unit as 12 degree.After ready,
It can star rack and carry out engine field investigation.
Start engine oil valve system wear resistance testboard bay, starting computer control system runs gasoline engine oil valve system
The test procedure of wear resistance test, includes revolving speed, torque, machine oil temperature by the prompt input parameter value parameter value of test procedure
Degree, inlet water temperature, fuel oil temperature, time etc. start engine, after normal operation, into the engine running in stage of 2-3h.
It should be noted that the parameter of engine running in stage engine wants break-in parameter all, the load of adjustment is smaller, engine
Running in stage purpose is mainly that the rocker cam friction pair of engine is allowed to come across under low load, prevents inordinate wear.
After running in stage, following operating parameter is set, 1500-3000 revs/min of revolving speed, 45-95 DEG C of coolant temperature,
40-100 DEG C of oil temperature, torque 10-50Nm, time 100-150h, engine enter the formal test stage.The oily bottom of engine 3
Shell 31 is provided with the every 25h of check valve-type sampling valve 32 sampling 30ml machine oil, to the machine oil of sampling carries out kinematic viscosity, ferro element contains
Whether there are metallic particles and viscosity shear in the analysis test machine oil such as amount, rocker arm and cam can substantially be verified by metallic particles
Abrasion condition.
In experimentation, computer control system carries out signal sampling, carries out data processing, draws real-time curve automatically,
By preset alarm parameters, computer can monitor operating parameter, if coolant liquid liquid level is too low, 51 meeting of liquid level alarm
Automatic alarm monitors convenient for operator.
In platform system operational process, computer real-time acquisition revolving speed, torque, power, coolant rate, coolant liquid temperature
The parameter values such as degree, engine oil pressure, oil temperature carry out data processing record.After the test, be sampled operation, in detail it,
Test oil is drained, the consumption of lubricating oil value in whole experiment process is calculated, disassembles engine cam and roller bearing rocker arm assembly,
Measure evaluation.By carrying out a variety of different types of engine oil valve system wear resistance engine tests, to rocker arm weightless value
It is compared with the iron content value in machine oil, to obtain the wear resistance difference of variety classes gasoline engine oil.
The utility model, as testing machine, carries out gantry designs, using rolling using the in-line 4 cylinder water cooling petrol engines of 1.3L
Pillar bearing rocker arm, Single Over Head Camshaft is as testpieces, engine evaluated oil valve system wear resistance.Under normal circumstances, it rolls
The frictional force of dynamic friction is 1/60 to the 1/40 of sliding friction.The flat sliding driven member used in foreign standard test shakes
Arm, friction mode are sliding friction.And the roller rocker arm used in present gantries engine, friction mode are to roll to rub
It wipes.
The utility model is characterized in that: providing engine oil valve system wear resistance testboard bay to the wear-resistant of gasoline engine oil
Performance is evaluated, and test is simple, accurate, fuel-efficient, time saving, show that the superiority and inferiority of formula abrasion resistance becomes in a relatively short period of time
Gesture.The gantry designs are reasonable, compact-sized, simple to operate, high degree of automation, and preferable simulated automotive is in urban road
Stop stopping out and low temperature low speed operating condition, and realizes the automatic collection and processing of data.Simultaneously by setting test parameters
The parameters such as torque, revolving speed, engine oil pressure and temperature, cooling water temperature and the flow of engine are monitored, measurement roller rocker arm
Iron content in abrasion loss and machine oil completes the evaluation of oil product abrasion resistance.
Claims (11)
1. a kind of engine oil valve system wear resistance testboard bay, characterized by comprising:
One dynamometer machine；
One engine is connect by an elastic connection axis with the dynamometer machine, and the engine is equipped with roller bearing rocker arm
Component, the roller bearing rocker arm assembly are mounted on the cam chair of the engine；
One fuel testing module, including fuel flow instrument and fuel oil temperature controller, the fuel flow instrument and fuel oil temperature controller with
The fuel line of the engine connects；
One cooling water heat exchanger, the cooling water heat exchanger are connected with the engine；
One machine oil heat exchanger, the machine oil heat exchanger are connect with the working connection of the engine；
Multichannel waterway circulating cooling line, it is in parallel between the multichannel waterway circulating cooling line and respectively with dynamometer machine, cold
But water- to-water heat exchanger, machine oil heat exchanger are correspondingly connected with, and are passed through cooling water with previous dynamometer machine, cooling water heat exchanger, machine oil heat exchanger
Carry out heat exchange；
One acquires and adjusts the temperature acquisition feedback control unit of the cooling water heat exchanger and the machine oil heat exchanger, and described
Cooling water heat exchanger, the connection of machine oil heat exchanger.
2. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the temperature acquisition
Feedback control unit further comprises two PID control valves, a temperature control modules and two temperatures sensor, the two PID controls
Valve processed is connected respectively in the waterway circulating cooling line connecting with the cooling water heat exchanger and the machine oil heat exchanger, institute
Two temperatures sensor is stated to be connected respectively in the waterway circulating connecting with the cooling water heat exchanger and the machine oil heat exchanger
In cooling line, the temperature control modules are connect with the two PID controls valve, the two temperatures sensor respectively, the temperature
Degree control module acquires the temperature of the temperature sensor, while corresponding adjusting waterway circulating is cooling respectively for two PID control valves
Pipeline is to control the temperature of cooling water and machine oil to meet high and low temperature working condition experimenting.
3. engine oil valve as claimed in claim 2 system wear resistance testboard bay, which is characterized in that the temperature acquisition
Feedback control unit is additionally provided with two shut-off valves, two shut-off valve be connected respectively with the cooling water heat exchanger and described
The waterway circulating cooling line of machine oil heat exchanger connection, each PID control valve configure the shut-off valve, the PID
Control valve is corresponding with the shut-off valve to be connected in series.
4. engine oil valve as claimed in claim 3 system wear resistance testboard bay, which is characterized in that per the water described all the way
Road circulating cooling pipeline includes an inlet pipeline and a water return pipeline, and the inlet pipeline, water return pipeline access a fast quick access
Integrated disk group, to realize the rapid abutting joint of pipeline, the water return pipeline connecting with the cooling water heat exchanger is equipped with one stream
Meter, the shut-off valve, the PID control valve are installed on the water return pipeline.
5. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the cooling water changes
Hot device is connect with a compress wind line, and the compress wind line is equipped with compress wind pressure sensor.
6. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the engine
Oil sump is provided with check valve-type sampling valve, to carry out machine oil sampling in the engine operation process.
7. engine oil valve as claimed in claim 6 system wear resistance testboard bay, which is characterized in that in the oil sump
Setting plus insulating layer.
8. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the cooling water changes
Hot device uses expansion type water tank, and the cooling water heat exchanger includes cooling water heat exchanger ontology and liquid reserve tank, and the cooling water changes
Hot device is additionally provided with a liquidometer, and the liquidometer is mounted in liquid reserve tank.
9. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the multichannel water route
Circulating cooling pipeline, which summarizes, to be connected in a total waterway circulating cooling line, is equipped in total waterway circulating cooling line
Temperature sensor, pressure sensor.
10. engine oil valve as described in claim 1 system wear resistance testboard bay, which is characterized in that the roller
Bearing rocker arm assembly further comprises: a rocker arm shaft, multiple rocker arm shaft holders, multiple inlet rocker arms and multiple exhaust valves shake
Arm, the rocker arm shaft are fixed in the cam chair of the engine by the multiple rocker arm shaft holder, and the rocker arm shaft is solid
Determine to be arranged between frame for interval, the inlet rocker arm and the exhaust valve rocker arm are arranged on the rocker arm shaft, arbitrarily
The inlet rocker arm, exhaust valve rocker arm are mounted between two rocker arm shaft holders.
11. engine oil valve as claimed in claim 10 system wear resistance testboard bay, which is characterized in that the rocker arm shaft
To be arranged at equal intervals between fixed frame, the exhaust valve rocker arm and the air inlet are respectively mounted between every two rocker arm shaft holder
Valve rocker arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820908211.9U CN208476930U (en) | 2018-06-12 | 2018-06-12 | Engine oil valve system abrasion resistance test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820908211.9U CN208476930U (en) | 2018-06-12 | 2018-06-12 | Engine oil valve system abrasion resistance test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208476930U true CN208476930U (en) | 2019-02-05 |
Family
ID=65217295
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820908211.9U Active CN208476930U (en) | 2018-06-12 | 2018-06-12 | Engine oil valve system abrasion resistance test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208476930U (en) |
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2018
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