CN110243607B - Engine oil temperature control system of engine performance test bed - Google Patents
Engine oil temperature control system of engine performance test bed Download PDFInfo
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- CN110243607B CN110243607B CN201910631522.4A CN201910631522A CN110243607B CN 110243607 B CN110243607 B CN 110243607B CN 201910631522 A CN201910631522 A CN 201910631522A CN 110243607 B CN110243607 B CN 110243607B
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- 239000010705 motor oil Substances 0.000 title claims abstract description 76
- 238000011056 performance test Methods 0.000 title claims abstract description 48
- 239000003921 oil Substances 0.000 claims abstract description 196
- 238000012360 testing method Methods 0.000 claims description 38
- 239000000110 cooling liquid Substances 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Testing Of Engines (AREA)
Abstract
The invention provides an engine performance test bench engine oil temperature control system applied to the technical field of engine performance test equipment, wherein an oil pump (2) of the engine performance test bench engine oil temperature control system is communicated with a 4/3 electromagnetic valve (4), the 4/3 electromagnetic valve (4) is communicated with an electric heater (5), the electric heater (5) is communicated with a four-way valve (6), the 4/3 electromagnetic valve (4) is communicated with an oil way inlet of a heat exchanger I (7), the heat exchanger I (7) is communicated with the four-way valve (6), the 4/3 electromagnetic valve (4) is communicated with a heat exchanger II (8), the heat exchanger II (8) is communicated with the four-way valve (6), and the four-way valve (6) is communicated with a heat exchanger III (9).
Description
Technical Field
The invention belongs to the technical field of engine performance test equipment, and particularly relates to an engine oil temperature control system of an engine performance test bench.
Background
When the engine is subjected to performance test, in order to test the influence of engine oil temperature on the engine performance under various temperature working conditions, the engine oil temperature of the engine needs to be continuously regulated, and the engine oil temperature needs to be frequently switched in the test process. In the prior art, when different engine oil temperatures are switched, different engine oil cooling equipment or heating equipment needs to be stopped and replaced, so that convenience of engine performance test is seriously affected by operation, and the workload of test staff is large and the efficiency is low.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the engine oil temperature control system of the engine performance test bed has the advantages that the structure is simple, the cost is low, the engine oil temperature can be conveniently and reliably controlled in the performance test process of the engine, the adjustment of different temperature ranges is conveniently and rapidly realized, and the convenience and the reliability of the engine performance test are effectively improved.
The technical scheme adopted by the invention is as follows:
The invention relates to an engine oil temperature control system of an engine performance test bench, which comprises an oil tank, an oil pump and a 4/3 electromagnetic valve, wherein the oil tank is communicated with an oil pump inlet, the oil pump is connected with a control component capable of controlling the start and stop of the oil pump and the adjustment of the rotating speed, an oil pump outlet is communicated with the 4/3 electromagnetic valve inlet, an electromagnetic valve outlet III of the 4/3 electromagnetic valve is communicated with an electric heater inlet I of a four-way valve, the electric heater is connected with a control component capable of controlling the start and stop of the electric heater and the adjustment of heat, an electromagnetic valve outlet I of the 4/3 electromagnetic valve is communicated with an oil way inlet of a heat exchanger I, an oil way outlet II of the heat exchanger I is communicated with an oil way inlet of a four-way valve II of the four-way valve, an oil way valve outlet of the 4/3 electromagnetic valve is communicated with an oil way inlet III of the heat exchanger, an oil way outlet of the heat exchanger III is communicated with the oil tank, an operating oil way outlet of the heat exchanger III is communicated with an oil inlet pipeline of an oil engine for the test bench, an operating oil way inlet of the oil engine is communicated with an oil return pipeline of the heat exchanger III, and the 4/3 electromagnetic valve I can control the on-off and the electromagnetic valve I can be controlled to switch the on-off of the electromagnetic valve I.
The heat exchanger I also comprises a cooling cavity I, a liquid inlet I of the cooling cavity I is communicated with the low-temperature cooling liquid storage box through a low-temperature cooling water inlet pipe, a liquid outlet I of the cooling cavity I is communicated with the low-temperature cooling liquid storage box through a low-temperature cooling water return pipe, and the temperature of low-temperature cooling liquid in the low-temperature cooling liquid storage box is within the range of-10 ℃ to-15 ℃.
The heat exchanger II also comprises a cooling cavity II, a liquid inlet II of the cooling cavity II is communicated with the normal-temperature cooling liquid storage box through a normal-temperature cooling water inlet pipe, a liquid outlet II of the cooling cavity II is communicated with the normal-temperature cooling liquid storage box through a normal-temperature cooling water return pipe, and the temperature of normal-temperature cooling water in the normal-temperature cooling liquid storage box is within 15-25 ℃.
The electric heater comprises an electric heater shell and a metal heating element, wherein the metal heating element is fixedly arranged in the electric heater shell through a connecting bracket, the metal heating element is connected with a power supply, a connecting wire between the metal heating element and the power supply is connected with a control part, and an electric heater inlet and an electric heater outlet are both arranged on the electric heater shell.
The engine oil temperature control system of the engine performance test bed also comprises a pressure relief valve, one end of the pressure relief valve is communicated with the position between the 4/3 electromagnetic valve and the oil pump, and the other end of the pressure relief valve is communicated with the oil tank.
A front temperature sensor is arranged between a 4/3 electromagnetic valve and an oil pump of the engine oil temperature control system of the engine performance test bed, a rear temperature sensor is arranged between an outlet of the four-way valve and an inlet of the heat exchanger III, an oil tank temperature sensor is arranged on an oil tank, and the front temperature sensor, the rear temperature sensor and the oil tank temperature sensor are respectively connected with a control part.
The oil tank is communicated with the oil pump inlet through a pipeline, the oil pump outlet is communicated with the 4/3 electromagnetic valve inlet through a pipeline, the electromagnetic valve outlet I of the 4/3 electromagnetic valve is communicated with the electric heater inlet through a pipeline, the electric heater outlet is communicated with the four-way valve inlet I of the four-way valve through a pipeline, the electromagnetic valve outlet I of the 4/3 electromagnetic valve is communicated with the heat exchanger I oil way inlet through a pipeline, and the heat exchanger I oil way outlet is communicated with the four-way valve inlet of the four-way valve through a pipeline.
The electromagnetic valve outlet II of the 4/3 electromagnetic valve of the engine performance test bed engine oil temperature control system is communicated with the oil way inlet of the heat exchanger II through a pipeline, the oil way outlet of the heat exchanger II is communicated with the four-way valve inlet of the four-way valve through a pipeline, the four-way valve outlet is communicated with the oil way inlet of the heat exchanger III through a pipeline, and the oil way outlet of the heat exchanger III is communicated with the oil tank through a pipeline.
The pressure relief valve set up on the relief valve hose, the pipeline intercommunication between relief valve hose one end and 4/3 solenoid valve and the oil pump, the relief valve hose other end and oil tank intercommunication set up pressure sensor on the relief valve hose, the relief valve is the electromagnetic relief valve, relief valve and pressure sensor are connected with control unit respectively.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
According to the engine oil temperature control system of the engine performance test bed, an engine needing performance test is fixedly arranged on a mounting bracket in the test time, and the engine oil temperature control system is arranged beside the engine in a test room. Therefore, when an engine test under the high-temperature environment of the engine oil is required, the electromagnetic valve outlet III of the 4/3 electromagnetic valve is controlled to be opened by the control component, the electric heater is controlled to be started by the control component, the oil pump is controlled to be started by the control component, the electromagnetic valve outlet I and the electromagnetic valve outlet II are simultaneously controlled to be disconnected by the control component, at the moment, the temperature control medium oil in the oil tank sequentially passes through the electric heater, the four-way valve inlet I of the four-way valve and the four-way valve outlet to enter the oil way of the heat exchanger III, at the moment, the high-temperature medium oil heats the working oil way passing through the heat exchanger III, and the working engine oil is recycled into the engine after the circulation in the heat exchanger III, so that the engine test under the high-temperature environment of the engine oil is ensured to be conveniently and reliably carried out. When the engine test under the engine oil normal temperature environment is needed, the control part controls the solenoid valve outlet I of the 4/3 solenoid valve to be opened, the control part controls the oil pump to start, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet II to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger I, the four-way valve inlet II of the four-way valve and the four-way valve outlet to enter the oil circuit of the heat exchanger III, at the moment, the medium oil at the normal temperature heats the working oil circuit passing through the heat exchanger III, and the working engine oil is circulated in the heat exchanger III to reenter the engine, so that the engine test under the engine oil high temperature environment is ensured to be convenient and reliable to carry out. When the engine test under the engine oil low-temperature environment is needed, the control part controls the solenoid valve outlet II of the 4/3 solenoid valve to be opened, the control part controls the oil pump to start, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet I to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger II, the four-way valve inlet III of the four-way valve and the four-way valve outlet to enter the oil circuit of the heat exchanger III, at the moment, the low-temperature medium oil heats the working oil circuit passing through the heat exchanger III, and the working engine oil is circulated in the heat exchanger III to reenter the engine, so that the engine test under the engine oil high-temperature environment is ensured to be convenient and reliable to carry out. Above-mentioned structure for the tester just can carry out different temperature regulation outside the laboratory, makes engine oil can satisfy the demand of different temperature environment, and need not get into the laboratory and carry out the dismantlement of different temperature control equipment and change, reduces tester work load, improves engine test efficiency, effectively improves test convenience. The engine oil temperature control system of the engine performance test bed has the advantages of simple structure and low cost, can conveniently and reliably control the engine oil temperature in the performance test process of the engine, conveniently and rapidly realize the adjustment of different temperature ranges, and effectively improve the convenience and reliability of the engine performance test.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
FIG. 1 is a schematic diagram of an engine oil temperature control system for an engine performance test stand according to the present invention;
the reference numerals in the figures are respectively: 1. an oil tank; 2. an oil pump; 3. a control part; 4. 4/3 solenoid valve; 5. an electric heater; 6. a four-way valve; 7. a heat exchanger I; 8. a heat exchanger II; 9. a heat exchanger III; 10. a cooling cavity I; 11. a low temperature cooling water inlet pipe; 12. a low-temperature cooling liquid storage tank; 13. a low-temperature cooling water return pipe; 14. cooling the cavity II; 15. a normal temperature cooling water inlet pipe; 16. a normal temperature cooling liquid storage tank; 17. an electric heater housing; 18. a metal heating element; 19. a pressure release valve; 20. a front temperature sensor; 21. a rear temperature sensor; 22. an oil tank temperature sensor; 23. a pressure relief valve hose; 24. a pressure sensor; 25. a normal temperature cooling water return pipe; 26. an engine.
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present invention by describing examples in further detail:
As shown in figure 1, the invention relates to an engine performance test bench engine oil temperature control system, which comprises an oil tank 1, an oil pump 2 and a 4/3 electromagnetic valve 4, wherein the oil tank 1 is communicated with an inlet of the oil pump 2, the oil pump 2 is connected with a control component 3 capable of controlling the start and stop of the oil pump 2 and the adjustment of the rotating speed, an outlet of the oil pump 2 is communicated with an inlet of the 4/3 electromagnetic valve 4, an outlet of the electromagnetic valve 4 is communicated with an inlet of an electric heater 5, an outlet of the electric heater 5 is communicated with an inlet I of a four-way valve 6, the electric heater 5 is connected with a control component 3 capable of controlling the start and stop of the electric heater 5 and the adjustment of heat, an outlet I of the electromagnetic valve 4 is communicated with an inlet of a heat exchanger I7, an outlet of an oil way 7 is communicated with an inlet II of a four-way valve of the four-way valve 6, an outlet II of the electromagnetic valve 4/3 electromagnetic valve 4 is communicated with an inlet of a heat exchanger II 8, an outlet of the oil way 8 is communicated with an inlet III of the four-way valve 6, an outlet of the four-way valve 6 is communicated with an inlet of the heat exchanger III 9, an outlet of the heat exchanger 9 is communicated with an oil way 1, an outlet of the working oil way of the heat exchanger 9 is communicated with an inlet of the working oil way of the electromagnetic valve 6 is communicated with an inlet of the electromagnetic valve 3 and an oil inlet of the test bench 4, and an outlet of the electromagnetic valve 4 is communicated with an inlet of the electromagnetic valve 3 is used for the electromagnetic valve 3. The above structure is proposed to solve the problems in the prior art when the engine performs the performance test. The engine for which performance tests are to be performed is fixedly mounted on the mounting bracket during the test, while the control system of the invention is arranged beside the engine in the test room. When the engine test under the high-temperature environment of the engine oil is needed, the control part controls the solenoid valve outlet III of the 4/3 solenoid valve 4 to be opened, the control part controls the electric heater 5 to be started, the control part controls the oil pump to be started, the control part simultaneously controls the solenoid valve outlet I and the solenoid valve outlet II to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the electric heater, the four-way valve inlet I of the four-way valve and the four-way valve outlet 6 to enter the oil way of the heat exchanger III 9, at the moment, the high-temperature medium oil heats the working oil way passing through the heat exchanger III 9, and the working engine oil is circulated in the heat exchanger III 9 to enter the engine again, so that the engine test under the high-temperature environment of the engine oil is ensured to be convenient and reliable. When the engine test under the engine oil normal temperature environment is needed, the control part controls the solenoid valve outlet I of the 4/3 solenoid valve 4 to be opened, the control part controls the oil pump to be started, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet II to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger I7, the four-way valve inlet II of the four-way valve and the four-way valve outlet 6 to enter the heat exchanger III 9 oil way, at the moment, the medium oil at the normal temperature heats the working oil way passing through the heat exchanger III 9, and the engine oil which works enters the engine again through the circulation in the heat exchanger III 9, so that the engine test under the engine oil high temperature environment is ensured to be convenient and reliable. When the engine test under the engine oil low-temperature environment is needed, the control part controls the solenoid valve outlet II of the 4/3 solenoid valve 4 to be opened, the control part controls the oil pump to be started, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet I to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger II 8, the four-way valve inlet III of the four-way valve and the four-way valve 6 outlet to enter the heat exchanger III 9 oil way, at the moment, the low-temperature medium oil heats the working oil way passing through the heat exchanger III 9, and the working engine oil enters the engine again through the circulation in the heat exchanger III 9, so that the engine test under the engine oil high-temperature environment is ensured to be convenient and reliable to carry out. Above-mentioned structure for the tester just can carry out different temperature regulation outside the laboratory, makes engine oil can satisfy the demand of different temperature environment, and need not get into the laboratory and carry out the dismantlement of different temperature control equipment and change, reduces tester work load, improves engine test efficiency, effectively improves test convenience. The engine oil temperature control system of the engine performance test bed has the advantages of simple structure and low cost, can conveniently and reliably control the engine oil temperature in the performance test process of the engine, conveniently and rapidly realize the adjustment of different temperature ranges, and effectively improve the convenience and reliability of the engine performance test.
The heat exchanger I7 also comprises a cooling cavity I10, a liquid inlet I of the cooling cavity I10 is communicated with the low-temperature cooling liquid storage box 12 through a low-temperature cooling water inlet pipe 11, a liquid outlet I of the cooling cavity I10 is communicated with the low-temperature cooling liquid storage box 12 through a low-temperature cooling water return pipe 13, and the temperature of low-temperature cooling liquid in the low-temperature cooling liquid storage box 12 is within the range of-10 ℃ to-15 ℃. According to the structure, the cooling water in the low-temperature cooling liquid storage tank is cooling liquid, and the water pump is arranged in the low-temperature cooling liquid storage tank at the same time, and the water pump I is connected with the control part. When the control part starts the oil pump during the engine performance test under the low-temperature environment, the water pump I is controlled to start at the same time. At this time, the water pump I pumps low-temperature cooling water to circulate along the water path in the cooling cavity I of the heat exchanger I7, and adjusts the temperature of the temperature-controlled medium oil passing through the heat exchanger I7, so that the medium oil entering the heat exchanger III 9 adjusts the engine oil of the engine.
The heat exchanger II 8 also comprises a cooling cavity II 14, a liquid inlet II of the cooling cavity II 14 is communicated with the normal-temperature cooling liquid storage tank 16 through a normal-temperature cooling water inlet pipe 15, a liquid outlet II of the cooling cavity II 14 is communicated with the normal-temperature cooling liquid storage tank 16 through a normal-temperature cooling water return pipe 25, and the temperature of normal-temperature cooling water in the normal-temperature cooling liquid storage tank 16 is within the range of 15-25 ℃. According to the structure, cooling water is arranged in the normal-temperature cooling liquid storage tank, and the water pump II is arranged in the normal-temperature cooling liquid storage tank at the same time and is connected with the control part. When the engine performance test is performed in the normal temperature environment, the control part controls the water pump II to start when the oil pump is started. At this time, the water pump ii pumps normal-temperature cooling water to circulate along the water path in the cooling chamber ii of the heat exchanger ii 8, thereby temperature-adjusting the temperature-controlled medium oil passing through the heat exchanger ii 8, so that the medium oil entering the heat exchanger iii 9 adjusts the engine oil of the engine 26.
The electric heater 5 comprises an electric heater shell 17 and a metal heating element 18, wherein the metal heating element 18 is fixedly arranged in the electric heater shell 17 through a connecting bracket, the metal heating element 18 is connected with a power supply, a connecting wire between the metal heating element 18 and the power supply is connected with the control part 3, and an inlet of the electric heater 5 and an outlet of the electric heater 5 are both arranged on the electric heater shell 10. When the medium oil is heated, the medium oil in the oil tank is pumped into the electric heater shell through the oil pump, and then the metal heating element in the electric heater shell is communicated with the power supply under the control of the control part, so that heat is generated and the medium oil is heated.
The engine performance test bench engine oil temperature control system also comprises a pressure relief valve 19, one end of the pressure relief valve 19 is communicated with the position between the 4/3 electromagnetic valve 4 and the oil pump 2, and the other end of the pressure relief valve 19 is communicated with the oil tank 1. With the structure, the pressure relief valve is used for regulating and controlling the oil pressure in the medium oil pumping process.
A front temperature sensor 20 is arranged between a 4/3 electromagnetic valve 4 and an oil pump 2 of the engine performance test bed engine oil temperature control system, a rear temperature sensor 21 is arranged between an outlet of a four-way valve 4 and an inlet of a heat exchanger III 9, an oil tank temperature sensor 22 is arranged on an oil tank 1, and the front temperature sensor 20, the rear temperature sensor 21 and the oil tank temperature sensor 22 are respectively connected with a control part 3. According to the structure, through the control of each temperature sensor, the real-time temperature of the medium oil at each part can be conveniently and reliably fed back, so that a tester can pay attention to the medium oil temperature at any time.
The oil tank 1 is communicated with the inlet of the oil pump 2 through a pipeline, the outlet of the oil pump 2 is communicated with the inlet of the 4/3 electromagnetic valve 4 through a pipeline, the outlet I of the electromagnetic valve 4 of the 4/3 electromagnetic valve is communicated with the inlet of the electric heater 5 through a pipeline, the outlet of the electric heater 5 is communicated with the inlet I of the four-way valve 6 through a pipeline, the outlet I of the electromagnetic valve 4 of the 4/3 electromagnetic valve is communicated with the inlet of the oil circuit I7 of the heat exchanger through a pipeline, and the outlet of the oil circuit I7 of the heat exchanger is communicated with the inlet of the four-way valve 6 through a pipeline. The electromagnetic valve outlet II of the 4/3 electromagnetic valve 4 of the engine performance test bed engine oil temperature control system is communicated with the oil way inlet of the heat exchanger II 8 through a pipeline, the oil way outlet of the heat exchanger II 8 is communicated with the four-way valve inlet of the four-way valve 6 through a pipeline, the outlet of the four-way valve 6 is communicated with the oil way inlet of the heat exchanger III 9 through a pipeline, and the oil way outlet of the heat exchanger III 9 is communicated with the oil tank 1 through a pipeline. The structure realizes reliable communication of all parts and is convenient for test.
The pressure relief valve 19 set up on the relief valve hose 23, the pipeline intercommunication between relief valve hose 23 one end and 4/3 solenoid valve 4 and the oil pump 2, the relief valve hose 23 other end and oil tank 1 intercommunication set up pressure sensor 24 on the relief valve hose 23, the relief valve 19 is the electromagnetism relief valve, relief valve 19 and pressure sensor 24 are connected with control unit 3 respectively.
In the control system of the invention, the heat exchanger I7 is provided with an oil circuit system and a water circuit system, the oil circuit system is used for medium oil to pass through, the water circuit system is used for low-temperature cooling water to pass through, heat exchange is carried out, and the temperature of the medium oil passing through the heat exchanger I7 is regulated. The heat exchanger II 8 is provided with an oil way system and a water way system, the oil way system is used for medium oil to pass through, the water way system is used for normal-temperature cooling water to pass through, heat exchange is carried out, and the temperature of the medium oil passing through the heat exchanger II 8 is regulated. The heat exchanger III 9 is provided with a working oil circuit and a medium oil circuit, the medium oil circuit is used for medium oil to pass, the working oil circuit is used for engine oil to pass, the engine oil realizes circulation, and the engine oil and the medium oil exchange heat, so that the temperature of the engine oil passing through the heat exchanger III 9 is effectively regulated
According to the engine oil temperature control system of the engine performance test bed, an engine needing performance test is fixedly arranged on a mounting bracket in the test time, and the engine oil temperature control system is arranged beside the engine in a test room. Therefore, when an engine test under the high-temperature environment of the engine oil is required, the electromagnetic valve outlet III of the 4/3 electromagnetic valve is controlled to be opened by the control component, the electric heater is controlled to be started by the control component, the oil pump is controlled to be started by the control component, the electromagnetic valve outlet I and the electromagnetic valve outlet II are simultaneously controlled to be disconnected by the control component, at the moment, the temperature control medium oil in the oil tank sequentially passes through the electric heater, the four-way valve inlet I of the four-way valve and the four-way valve outlet to enter the oil way of the heat exchanger III, at the moment, the high-temperature medium oil heats the working oil way passing through the heat exchanger III, and the working engine oil is recycled into the engine after the circulation in the heat exchanger III, so that the engine test under the high-temperature environment of the engine oil is ensured to be conveniently and reliably carried out. When the engine test under the engine oil normal temperature environment is needed, the control part controls the solenoid valve outlet I of the 4/3 solenoid valve to be opened, the control part controls the oil pump to start, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet II to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger I, the four-way valve inlet II of the four-way valve and the four-way valve outlet to enter the oil circuit of the heat exchanger III, at the moment, the medium oil at the normal temperature heats the working oil circuit passing through the heat exchanger III, and the working engine oil is circulated in the heat exchanger III to reenter the engine, so that the engine test under the engine oil high temperature environment is ensured to be convenient and reliable to carry out. When the engine test under the engine oil low-temperature environment is needed, the control part controls the solenoid valve outlet II of the 4/3 solenoid valve to be opened, the control part controls the oil pump to start, and the control part simultaneously controls the solenoid valve outlet III and the solenoid valve outlet I to be disconnected, at the moment, the temperature control medium oil in the oil tank sequentially passes through the heat exchanger II, the four-way valve inlet III of the four-way valve and the four-way valve outlet to enter the oil circuit of the heat exchanger III, at the moment, the low-temperature medium oil heats the working oil circuit passing through the heat exchanger III, and the working engine oil is circulated in the heat exchanger III to reenter the engine, so that the engine test under the engine oil high-temperature environment is ensured to be convenient and reliable to carry out. Above-mentioned structure for the tester just can carry out different temperature regulation outside the laboratory, makes engine oil can satisfy the demand of different temperature environment, and need not get into the laboratory and carry out the dismantlement of different temperature control equipment and change, reduces tester work load, improves engine test efficiency, effectively improves test convenience. The engine oil temperature control system of the engine performance test bed disclosed by the invention has the advantages that the structure is simple, the input cost is low, frequent disassembly is not needed, the engine oil temperature can be reliably controlled in the performance test process of an engine, the adjustment of different temperature ranges is conveniently and rapidly realized, and the convenience and the reliability of the engine performance test are effectively improved.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the invention is not limited by the foregoing, but rather is within the scope of the invention as long as various modifications are made by the method concept and technical scheme of the invention, or the concept and technical scheme of the invention are directly applied to other occasions without modification.
Claims (6)
1. An engine performance test bench engine oil temperature control system which is characterized in that: the engine oil temperature control system of the engine performance test bed comprises an oil tank (1), an oil pump (2) and a 4/3 electromagnetic valve (4), wherein the oil tank (1) is communicated with an inlet of the oil pump (2), the oil pump (2) is connected with a control component (3) capable of controlling the start and stop of the oil pump (2) and the rotation speed regulation, an outlet of the oil pump (2) is communicated with an inlet of the 4/3 electromagnetic valve (4), an outlet III of the electromagnetic valve (4) is communicated with an inlet of an electric heater (5), an outlet of the electric heater (5) is communicated with an inlet I of a four-way valve (6), the electric heater (5) is connected with a control component (3) capable of controlling the start and stop of the electric heater (5) and the heat regulation, an outlet I of the electromagnetic valve of the 4/3 electromagnetic valve (4) is communicated with an oil inlet II of the four-way valve (6), an outlet II of the electromagnetic valve of the 4/3 electromagnetic valve (4) is communicated with an oil inlet of the four-way valve II (8), an oil outlet of the four-way valve II (6) is communicated with an oil inlet III of the four-way valve (6), an outlet of the four-way valve (6) is communicated with an oil outlet of the heat exchanger (9) is communicated with an oil inlet of the oil tank (1), the working oil way outlet of the heat exchanger III (9) is communicated with an oil inlet pipeline of the oil engine for the test bed, the working oil way inlet of the oil engine for the test bed is communicated with an oil return pipeline of the heat exchanger III (9), and the 4/3 electromagnetic valve (4) is connected with a control component (3) capable of controlling the on-off of the 4/3 electromagnetic valve (4) and the on-off switching of the electromagnetic valve outlet I, the electromagnetic valve outlet II and the electromagnetic valve outlet III;
The heat exchanger I (7) further comprises a cooling cavity I (10), a liquid inlet I of the cooling cavity I (10) is communicated with the low-temperature cooling liquid storage tank (12) through a low-temperature cooling water inlet pipe (11), a liquid outlet I of the cooling cavity I (10) is communicated with the low-temperature cooling liquid storage tank (12) through a low-temperature cooling water return pipe (13), and the temperature of low-temperature cooling liquid in the low-temperature cooling liquid storage tank (12) is within the range of-10 ℃ to-15 ℃;
The heat exchanger II (8) further comprises a cooling cavity II (14), a liquid inlet II of the cooling cavity II (14) is communicated with the normal-temperature cooling liquid storage tank (16) through a normal-temperature cooling water inlet pipe (15), a liquid outlet II of the cooling cavity II (14) is communicated with the normal-temperature cooling liquid storage tank (16) through a normal-temperature cooling water return pipe (25), and the temperature of normal-temperature cooling water in the normal-temperature cooling liquid storage tank (16) is within the range of 15-25 ℃;
The electric heater (5) comprises an electric heater shell (17) and a metal heating element (18), wherein the metal heating element (18) is fixedly arranged in the electric heater shell (17) through a connecting bracket, the metal heating element (18) is connected with a power supply, a connecting wire between the metal heating element (18) and the power supply is connected with the control part (3), and an inlet of the electric heater (5) and an outlet of the electric heater (5) are both arranged on the electric heater shell (17).
2. The engine performance test stand engine oil temperature control system of claim 1, wherein: the engine performance test bed engine oil temperature control system also comprises a pressure relief valve (19), one end of the pressure relief valve (19) is communicated with the position between the 4/3 electromagnetic valve (4) and the oil pump (2), and the other end of the pressure relief valve (19) is communicated with the oil tank (1).
3. The engine performance test stand engine oil temperature control system according to claim 1 or 2, characterized in that: a front temperature sensor (20) is arranged between a 4/3 electromagnetic valve (4) and an oil pump (2) of the engine performance test bed engine oil temperature control system, a rear temperature sensor (21) is arranged between an outlet of a four-way valve (6) and an inlet of a heat exchanger III (9), an oil tank temperature sensor (22) is arranged on an oil tank (1), and the front temperature sensor (20), the rear temperature sensor (21) and the oil tank temperature sensor (22) are respectively connected with a control part (3).
4. The engine performance test stand engine oil temperature control system according to claim 1 or 2, characterized in that: the oil tank (1) and the oil pump (2) are communicated through a pipeline, the outlet of the oil pump (2) is communicated with the inlet of the 4/3 electromagnetic valve (4) through a pipeline, the outlet I of the electromagnetic valve of the 4/3 electromagnetic valve (4) is communicated with the inlet of the electric heater (5) through a pipeline, the outlet of the electric heater (5) is communicated with the inlet I of the four-way valve (6) through a pipeline, the outlet I of the electromagnetic valve of the 4/3 electromagnetic valve (4) is communicated with the inlet of the oil circuit of the heat exchanger I (7) through a pipeline, and the outlet of the oil circuit of the heat exchanger I (7) is communicated with the inlet of the four-way valve (6) through a pipeline.
5. The engine performance test stand engine oil temperature control system according to claim 1 or 2, characterized in that: the electromagnetic valve outlet II of the 4/3 electromagnetic valve (4) of the engine performance test bed engine oil temperature control system is communicated with the oil way inlet of the heat exchanger II (8) through a pipeline, the oil way outlet of the heat exchanger II (8) is communicated with the four-way valve inlet of the four-way valve (6) through a pipeline, the outlet of the four-way valve (6) is communicated with the oil way inlet of the heat exchanger III (9) through a pipeline, and the oil way outlet of the heat exchanger III (9) is communicated with the oil tank (1) through a pipeline.
6. The engine performance test stand oil temperature control system according to claim 2, wherein: the pressure relief valve (19) set up on relief valve hose (23), the pipeline intercommunication between relief valve hose (23) one end and 4/3 solenoid valve (4) and oil pump (2), relief valve hose (23) other end and oil tank (1) intercommunication set up pressure sensor (24) on relief valve hose (23), relief valve (19) are electromagnetic pressure relief valve, relief valve (19) and pressure sensor (24) are connected with control unit (3) respectively.
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| CN112284740B (en) * | 2020-10-27 | 2022-10-28 | 无锡沃尔福汽车技术有限公司 | Engine lubrication system function test mechanism |
| CN112709638B (en) * | 2020-12-29 | 2021-11-12 | 中国航发湖南动力机械研究所 | Fuel oil temperature adjusting system and method for high-low temperature starting test of engine |
| CN114517719B (en) * | 2022-01-18 | 2023-01-24 | 东风汽车集团股份有限公司 | Engine oil pressure test method |
| CN114483252B (en) * | 2022-01-19 | 2023-03-31 | 武汉理工大学 | Engine oil replacement precision control system and control method for engine pedestal |
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