CN106092589B - A kind of engine cold-start load testing machine and method - Google Patents
A kind of engine cold-start load testing machine and method Download PDFInfo
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- CN106092589B CN106092589B CN201610700739.2A CN201610700739A CN106092589B CN 106092589 B CN106092589 B CN 106092589B CN 201610700739 A CN201610700739 A CN 201610700739A CN 106092589 B CN106092589 B CN 106092589B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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Abstract
A kind of engine cold-start load testing machine and method, including main control cabinet, fueller, loading device three parts, industrial personal computer, display and data acquisition control system are equipped with main control cabinet, to control the startup of fueller, heating, stopping and temperature PID control；Moment of torsion, rotating speed, all signals of oil temperature of cold start-up loading device are gathered when engine is started, operated at the same time；Then the aperture of the pilot proportional valve of loading device is controlled again, the moment of torsion of engine is reached the requirement moment of torsion of test specification；Fueller provides hydraulic oil for hydraulic pump, and with cooling and heating element, fueller provides flow about 200L/min, pressure (50~300) kPa, and can automatic constant-temperature and adjustable, constant temperature value (50 ± 5) DEG C；Loading device provides load for engine, and hydraulic pump uses axial variable displacement plunger pump, and using the pilot proportional valve regulation pump discharge pressure to match with the pump, to meet test torque loading condition requirement.
Description
Technical field
The present invention relates to the detection experimental rig and method of cold engine, especially a kind of engine that is used for is trembled with fear weather in ice
Under low-temperature cool starting load testing machine and method.
Background technology
With Chinese the Belt and Road idea performance, Central European, thing Asia trade contacts will more and more frequently, and road is handed over
Logical transport will also play the part of more and more important role in the implementation of the Belt and Road；The core-engine performance of heavy-duty commercial vehicle
Quality will be vital for playing the role of across the road transport system of Eurasia tie；Eurasia system weather is more
Become, wherein being especially a stringent test to engine performance quality with the low-temperature cold in Central European various countries' winter.
Engine start under low temperature bad weather is then even more important.Engine at low ambient temperatures, to cold engine
Startup be known as cold start-up.Cold engine, refers to the temperature of engine body, such as machine oil, coolant, battery liquid etc.
The temperature engine condition identical with environment temperature.
Engine cold-start, to gasoline engine, refers to the startup of subzero less than 18 DEG C of environment temperature；It is finger ring to diesel engine
The startup that lower less than 10 DEG C of border zero temperature.
The resistance of start comes from engine in itself, and cold start-up load test is in Cold Start, in engine song
Shaft end adds a fixed load, that is, is known as band and carries startup.Band carries low-temperature cool starting by gradually increasing load, finds engine and " opens
Move successfully " critical torque with " start fail ", so as to calculate the friction horsepower of critical point.
Engine band refrigerating start operating performance under low temperature condition, is heavy type commercial of the more universal generation in severe cold area
Car field, the certification test groped for its performance, quality, not yet carries out at home；A small number of foreign capitals, joint venture pass through vehicle
The Market Feedback of road transport, has begun to more and more focus on research and the input in this field.The application submit be
For test engine performance quality in the case of environment temperature, abrupt pressure change, and find out influence engine performance qualitative factor
Device and method.
The content of the invention
The present invention provides a kind of engine cold-start load testing machine and method, in low temperature bin to engine
Low temperature band is loaded into row test and examination；Test, from starter dragging engine operating, cannot drag in the case of band carries to starter
The overall process of dynamic engine, carries for producer in parts, new product development, failure analysis, Combustion System, discharge improvement etc.
For technical support.
The engine cold-start load testing machine includes main control cabinet, fueller, loading device three parts.Its
It is characterized in：Industrial personal computer, display and data acquisition control system are equipped with the main control cabinet, to control opening for fueller
Dynamic, heating, stopping and temperature PID control；The moment of torsion of cold start-up loading device is gathered when engine is started, operated at the same time, is turned
Speed, all signals of oil temperature；Then the aperture of the pilot proportional valve of loading device is controlled again, the moment of torsion of engine is reached experiment rule
The requirement moment of torsion of model；Fueller provides hydraulic oil for hydraulic pump, and with cooling and heating element, fueller provides flow
200L (± 5)/min, pressure (50~300) kPa, and can automatic constant-temperature and adjustable, constant temperature value (50 ± 5) DEG C；Loading device is
Engine provides load, and hydraulic pump uses axial variable displacement plunger pump, and using the pilot proportional valve regulation to match with the pump
The pump discharge pressure, to meet test torque loading condition requirement.
The fueller of engine cold-start load testing machine includes gear oil pump, dynamoelectric proportion valve, heat exchanger, oil
Pipeline, the valve of case, heating tank and the above-mentioned component of connection, it is characterized in that：Industrial personal computer in main control cabinet, passes through real-time reception
Hydraulic fluid temperature signal, then compared with the temperature value of setting, so as to control the work shape of dynamoelectric proportion valve and heater
State；Dynamoelectric proportion valve perform industrial personal computer instruction, control heat exchanger in hydraulic oil and heater in hydraulic oil according to than
Example is mixed in hydraulic oil, so as to provide the suitable hydraulic oil of temperature to hydraulic pump, is so adjusted in real time, is made hydraulic oil temperature
Degree keeps stablizing.
Liquid level gauge, tank filler, the hydraulic oil bypass line for pressure regulation are additionally provided with the fuel tank and is used for
Receive the hydraulic oil oil return pipe from loading device oil return.
In the equipment；The cooling system of equipment include heat exchanger, cooling water filter, cooling water inlet pipe,
Cooling water outlet pipe.The hydraulic oil of loading device enters fuel tank by oil return pipe, and gear oil pump pumps the hydraulic oil of fuel tank respectively
Enter in heater and heat exchanger, pass through the heating of heater and the cooling of heat exchanger；Adjusted according to the temperature of oil inlet
The aperture of dynamoelectric proportion valve, after the hydraulic oil that will be heated and cool down is mixed according to the aperture of proportioning valve according to different ratios
Loading device is supplied by oil inlet pipe.
Engine cold-start load testing machine is axial arranged, mainly by plunger pump, clutch, shaft coupling, calibrated wrench method
The parts such as orchid, support shaft base, transmission shaft, protective cover, drive shaft protection cover form.Above-mentioned component is held by moving cart
Carry, make equipment conveniently moving.
Brief description of the drawings
Fig. 1 is fueller agent structure schematic diagram of the present invention；
Fig. 2 is the rearview of Fig. 1；
Fig. 3 is loading device agent structure schematic diagram of the present invention；
Fig. 4 is Fig. 3 with the structure diagram after protective cover；
Fig. 5 is test procedure flow chart of the present invention.
In figure：1- gear oil pumps, 2- cooling water outlet pipes, 3- heat exchangers, 4- cooling water inlet pipes, 5- cooling water filtrations
Device, 6- power control box, 7- fuel tanks, 8- liquid level gauges, 9- tank fillers, 10- hydraulic oil bypass lines, 11- hydraulic oil oil return pipes,
12- dynamoelectric proportion valves, 13- oil strainer inlet pressure tables, 14- oil strainer oil outlet pressure gauges, 15- cooling water pressures
Table, 16- oil inlet pipes, 17- unloading lines, 18- oil strainers, 19- static balancing valves, 20- heating tanks, 21- fuel tanks are fuel-displaced
Pipeline, 31- pilot proportional valves, 32- plunger pumps, 33- clutches, 34- shaft couplings, 35- torque flanges, 36- support shaft bases
37- transmission shafts, 38- moving carts, 39- protective covers, 40 drive shaft protection covers.
Embodiment
The engine cold-start load testing machine includes main control cabinet, fueller, loading device three parts.Its
It is characterized in：Industrial personal computer, display and data acquisition control system are equipped with the main control cabinet, to control opening for fueller
Dynamic, heating, stopping and temperature PID control；The moment of torsion of cold start-up loading device is gathered when engine is started, operated at the same time, is turned
Speed, all signals of oil temperature；Then the aperture of the pilot proportional valve of loading device is controlled again, the moment of torsion of engine is reached experiment rule
The requirement moment of torsion of model；Fueller provides hydraulic oil for hydraulic pump, and with cooling and heating element, fueller provides flow about
200L/min, pressure (50~300) kPa, and can automatic constant-temperature and adjustable, constant temperature value (50 ± 5) DEG C；Loading device is engine
Load is provided, hydraulic pump uses axial variable displacement plunger pump, and this is pumped out using the pilot proportional valve regulation to match with the pump
Mouth pressure, to meet test torque loading condition requirement.
The fueller of engine cold-start load testing machine in Fig. 1,2, including gear oil pump 1, heat exchanger 3,
Pipeline, the valve of fuel tank 7, heating tank 20 and the above-mentioned component of connection.Hydraulic oil enters fuel tank 7 by hydraulic oil oil return pipe 11,
Pressurize through gear oil pump 1 branch to respectively heat exchanger 3 carry out cooling and heater tank 20 heated；By on oil inlet pipe
The temperature feedback of temperature sensor adjust the aperture of dynamoelectric proportion valve 12, being mixed to the hydraulic oil after cooling and heating
Close, enter loading device from oil inlet pipe 16 after oil strainer 18 filters related impurities.
Be additionally provided with the fuel tank 7 liquid level gauge 8, tank filler 9, the hydraulic oil bypass line 10 for pressure regulation and
For receiving the hydraulic oil oil return pipe 11 from loading device oil return.
As shown in Figure 3,4.The loading device of engine cold-start load testing machine is successively by pilot proportional valve 31, column
Plug pump 32, clutch 33, shaft coupling 34, torque flange 35, support shaft base 36, transmission shaft 37, protective cover 39, transmission shaft protection
Cover 40 grade parts composition.Above-mentioned component is carried by moving cart 38, makes equipment conveniently moving.
Main control cabinet electrical system：
Industrial personal computer and display：Show oil supply system state of a control, show loading device state, show each temperature, pressure, torsion
The measured values such as square, rotating speed.
Acquisition module：Module is hybrid channel, shares 16 road DI, 16 road DO, 16 road AI (8 tunnel of both-end), 2 road AO, are used for
Systematic survey and control passage.
PT100 modules：The temperature value that PT100 sensors measure is converted into magnitude of voltage, enters back into acquisition module, it is corresponding to close
It is to export (0-5) VDC frequency modules for (- 50~100) DEG C corresponding voltage：After the rotating speed of measurement is converted into magnitude of voltage, enter
Acquisition system, correspondence export (0-5) VDC for (0-5000) r/min corresponding voltages.
Servo current module：For controlling pilot proportional valve (31), external signal (0-10) V, corresponding current output (0-
1)A。
Switching Power Supply：24VDC power supplys are provided for module and sensor.
Circulating pump indicator light：When the oil pump operating of oil supply system, this lamp is bright.
Heater indicator light：When oil supply system heater works, this lamp is bright.
Alarm：When system has alarm, alarm can be sent, while have red flare.
Power supply indicator：When a system is powered up, this lamp is bright.
Power supply：Click system electrification.
Stop：System cut-off is clicked, PLSCONFM work control machine is turned off before power-off.
Emergency stop：When being in an emergency, this button is pressed, system does not power off, but circulating pump can stop work with heater
Make, clutch will disconnect connection.
Operating procedure explanation：
As shown in Fig. 5 test procedure flow charts of the present invention, after engine installs (between loading equipemtn and engine
Transmission axis connection), then whole system is operated, its step is as follows：
Step 1. confirms facilities air switch in closure state；
Step 2. confirms exterior 7 DEG C of cooling water pipe normal water supplies, confirms that the water-in and water-out ball valve of the recirculated water of oil-servicing facilities is beaten
Open, oil circuit is opened into, oil return ball valve；
Step 3. confirms being opened into and out of oily ball valve for loading equipemtn hydraulic pump, confirms that the ball valve of hydraulic pump pressure relief opening is opened；
Step 4. confirms that engine trolley is connected reliable and fixation with moving cart 38.
Step 5. confirms that transmission axis connection bolt is correctly installed, and confirms that protecting cover for transmission shaft and clutch protective cover have been installed
Complete；
Step 6. confirms that clutch compressed air has been opened；
After step 7. confirms that the power supply of user power supply is normal, the start button of main control cabinet is pressed, system electrification, power supply at this time
Indicator light is bright.Long-press ups power switchs 1S, and UPS is powered on, and is industrial personal computer and monitor power supply；
Step 8. opens industrial personal computer power, starts industrial personal computer, into operating system；
Step 9. is according to the control fueller operating of software operating instruction；
Whether step 10. System self-test, detection oil temperature, pressure, oil level, electromagnetic proportional valve 31 are normal；
Step 11. opens gear oil-driven pump 1；
Whether step 12. detection oil pressure, oil temperature, oil tank liquid level meet test requirements document；
Step 13. is attracted clutch 33；
Step 14. adjusts 31 aperture of electromagnetic proportional valve；
Step 15. test is completed and controls fueller to shut down by software after recording detection data, exits software,
Whole system power supply is disconnected again after closing industrial personal computer.
System is maintained：
(1) when carrying out plant maintenance, it should be noted that following basic principle：
A, the security legislation of locality is had to comply with.
B, the external power supply of off device, it is ensured that equipment is without electricity.
C, the liquid in emptying equipment, confirms that equipment has been thoroughly cooled, no high-temp liquid.
D, the external liquid (such as Xun rings cooling water, compressed air) of off device.
E, qualified personnel perform plant maintenance work.
(2) maintenance period of device：
The maintenance period that following table is listed is the empirical data of a routine.User can make according to actual service condition
Maintenance period.
In addition to daily inspection/maintenance, Cleaning pipes are the important process of upkeep operation.
Pipeline cleaning：
It is divided into cooling water pipeline cleaning and engine oil pipeline cleaning.
(1) cleaning of cooling water pipeline
Cleaning method：Equipment is separated with peripheral conduits, connects the circulating line of EME443 type scale cleaning machines.Cleaning machine
Cleaning solution is continuously pumped the pipeline of equipment, and cleaning solution is heated to 60 DEG C, until incrustation scale is rinsed totally.Due to cleaning
Liquid is corrosive, and should first be rinsed after cleaning with neutralizer, then with clear water flushing pipe.
(2) cleaning of heat exchanger
Water quality and flow, the oil temperature of control and the difference of flow used because of situations such as user, will make one
A suitable maintenance period is relatively difficult, based on experience, needs to clean after general use (1500~2000) hour, when the machine of discovery
Oil temperature is higher to be unable to control, and is excluding other factors (for example, cooling water temperature is high, flow is few；Engine motor oil plane is low,
Gate valve opens excessive, oil pump capacity decline, pipe leakage etc.) influence after, it is contemplated that be the cooling energy of heat exchanger
Caused by power declines.At this moment heat exchanger should be cleaned in advance.
Heat exchanger has two pipelines independent each other.
(3) water quality of recirculated cooling water should meet following requirement
| Sequence number | Project | Unit | Permissible value |
| 1 | Suspended matter | mg/L | ≤10 |
| 2 | PH value | 7.0~9.2 | |
| 3 | Methyl orange alkalinity | mg/L | ≤500 |
| 4 | Ca 2+ | mg/L | 30~200 |
| 5 | Fe2+ | mg/L | <0.5 |
| 6 | Cl- | mg/L | ≤300 |
| 7 | SO4 2- | mg/L | ≤1500 |
| 8 | Silicic acid | mg/L | ≤175 |
| 9 | Free chlorine | mg/L | 0.5~1.0 |
| 10 | Petroleum-type | mg/L | <5 |
Claims (3)
1. a kind of engine cold-start load testing machine, including main control cabinet, fueller, loading device three parts, its
It is characterized in：Industrial personal computer, display and data acquisition control system are equipped with the main control cabinet, to control opening for fueller
Dynamic, heating, stopping and temperature PID control；The moment of torsion of cold start-up loading device is gathered when engine is started, operated at the same time, is turned
Speed, oil temperature signal；Then the aperture of the pilot proportional valve of loading device is controlled again, the moment of torsion of engine is reached test specification
Requirement moment of torsion；Fueller provides hydraulic oil for hydraulic pump, and with cooling and heating element, fueller provides flow 200
± 5L/min, pressure 50kPa~300kPa, and can automatic constant-temperature and adjustable, 50 ± 5 DEG C of constant temperature value；Loading device is engine
Load is provided, hydraulic pump uses axial variable displacement plunger pump, and this is pumped out using the pilot proportional valve regulation to match with the pump
Mouth pressure, to meet test torque loading condition requirement；
The fueller includes gear oil pump (1), heat exchanger (3), fuel tank (7), heating tank (20) and the above-mentioned portion of connection
Pipeline, the valve of part, hydraulic oil enter fuel tank (7) by hydraulic oil oil return pipe (11), are shunted respectively through gear oil pump (1) pressurization
Cooling is carried out to heat exchanger (3) and heater tank (20) is heated；Pass through the temperature of the temperature sensor on oil inlet pipe
Feed back to adjust the aperture of dynamoelectric proportion valve (12), to be mixed to the hydraulic oil after cooling and heating, through oil strainer
(18) loading device is entered from oil inlet pipe (16) after filtering related impurities；
The loading device is successively by pilot proportional valve (31), plunger pump (32), clutch (33), shaft coupling (34), moment of torsion
Each parts composition of flange (35), support shaft base (36), transmission shaft (37), protective cover (39), drive shaft protection cover (40), on
State component to be carried by moving cart (38), make equipment conveniently moving.
2. engine cold-start load testing machine as claimed in claim 1, it is characterized in that：Also set on the fuel tank (7)
There are liquid level gauge (8), tank filler (9), the hydraulic oil bypass line (10) for pressure regulation and carry out bootstrap loading dress for receiving
Put back into the hydraulic oil oil return pipe (11) of oil.
A kind of 3. test method for the engine cold-start load testing machine of claim 1 or 2, it is characterized in that step
It is as follows：
Step 1. confirms facilities air switch in closure state；
Step 2. confirms exterior 7 DEG C of cooling water pipe normal water supplies, confirms that the water-in and water-out ball valve of the recirculated water of oil-servicing facilities is opened,
Oil circuit is opened into, oil return ball valve；
Step 3. confirms being opened into and out of oily ball valve for loading equipemtn hydraulic pump, confirms that the ball valve of hydraulic pump pressure relief opening is opened；
Step 4. confirms that engine trolley is connected reliable and fixation with moving cart (38)；
Step 5. confirms that transmission axis connection bolt is correctly installed, and confirms that protecting cover for transmission shaft and clutch protective cover have installed
Into；
Step 6. confirms that clutch compressed air has been opened；
After step 7. confirms that the power supply of user power supply is normal, the start button of main control cabinet is pressed, system electrification, power supply instruction at this time
Lamp is bright, and long-press ups power switch 1s, UPS is powered on, and is industrial personal computer and monitor power supply；
Step 8. opens industrial personal computer power, starts industrial personal computer, into operating system；
Step 9. is according to the control fueller operating of software operating instruction；
Whether step 10. System self-test, detection oil temperature, pressure, oil level, pilot proportional valve (31) are normal；
Step 11. starter receiver oil pump (1)；
Whether step 12. detection oil pressure, oil temperature, oil tank liquid level meet test requirements document；
Step 13. is attracted clutch (33)；
The aperture of step 14. adjustment pilot proportional valve (31)；
Step 15. test is completed and controls fueller to shut down by software after recording detection data, exits software, closes
Whole system power supply is disconnected after industrial personal computer again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700739.2A CN106092589B (en) | 2016-08-22 | 2016-08-22 | A kind of engine cold-start load testing machine and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700739.2A CN106092589B (en) | 2016-08-22 | 2016-08-22 | A kind of engine cold-start load testing machine and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106092589A CN106092589A (en) | 2016-11-09 |
| CN106092589B true CN106092589B (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610700739.2A Active CN106092589B (en) | 2016-08-22 | 2016-08-22 | A kind of engine cold-start load testing machine and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088406B (en) * | 2021-11-30 | 2024-03-12 | 浙江吉利控股集团有限公司 | Calibration method, device and equipment for engine cold start and computer storage medium |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6871136B1 (en) * | 2004-02-05 | 2005-03-22 | General Motors Corporation | Method for on-board diagnosis of cold start emissions reduction control strategy |
| JP2010230486A (en) * | 2009-03-27 | 2010-10-14 | Ihi Corp | Premixed gas supply testing device |
| CN201438146U (en) * | 2009-07-28 | 2010-04-14 | 广西玉柴机器股份有限公司 | Engine low temperature test system |
| CN103364196B (en) * | 2012-03-30 | 2016-08-10 | 广西玉柴机器股份有限公司 | Engine transient performance is determined moment of torsion rotating speed and is promoted method of testing |
| CN103674363A (en) * | 2012-09-18 | 2014-03-26 | 重庆长安汽车股份有限公司 | Test system for low-temperature starting resisting moment of engine |
| CN203719898U (en) * | 2013-10-18 | 2014-07-16 | 潍柴动力股份有限公司 | Engine cold start test system |
| US9032927B1 (en) * | 2013-11-08 | 2015-05-19 | Achates Power, Inc. | Cold-start strategies for opposed-piston engines |
| CN204346715U (en) * | 2014-12-19 | 2015-05-20 | 北汽福田汽车股份有限公司 | The proving installation of engine cold-start performance |
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