CN103698131B - A kind of engine accessory power rating load simulation system - Google Patents
A kind of engine accessory power rating load simulation system Download PDFInfo
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- CN103698131B CN103698131B CN201310721557.XA CN201310721557A CN103698131B CN 103698131 B CN103698131 B CN 103698131B CN 201310721557 A CN201310721557 A CN 201310721557A CN 103698131 B CN103698131 B CN 103698131B
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- 238000004088 simulation Methods 0.000 title claims abstract description 92
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 5
- 238000004378 air conditioning Methods 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 14
- 230000003750 conditioning effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
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- 239000003507 refrigerant Substances 0.000 description 1
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Abstract
The invention discloses a kind of engine accessory power rating load simulation system, comprising: engine, air compressor machine load simulation module, air conditioner load analog module, generator loading analog module and control module; Described air compressor machine load simulation module comprises air compressor machine, gas-holder and unloader, and described air conditioner load analog module comprises compressor of air conditioner, drying chamber, heating radiator, condenser, evaporator, cooling fan; Described generator loading analog module comprises generator and power conditioning module.When carrying out engine rig test, can these load simulation modules be controlled separately or be controlled simultaneously, each load simulation module can be provided in the load of change in certain limit, and system can carry out electrodeless adjustment to load, thus makes the versatility of this system very strong.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an engine accessory load simulation system.
Background
During the engine bench test, engine accessory loads on the whole vehicle, namely an air compressor load, an air conditioner load and a generator load, need to be simulated, and the aim is to better simulate the actual operation working condition of the engine so as to provide effective test data for ensuring the performance and reliability of the whole engine and accessories thereof.
The existing engine accessory load simulation system mostly directly removes the load on the whole vehicle and slightly changes the load to adapt to a bench test. However, this method of transplanting accessory loads not only wastes time and labor in the transplanting process, but also has a diversity of accessory loads, so that the existing engine accessory load simulation system has poor versatility, for example: for the air-conditioning load, because the air-conditioning head of the large bus is very large and the air-conditioning heads of other vehicle types are relatively small, the power, the connection mode and the like of the air-conditioning load equipped for different vehicle types are possibly different, and in order to better simulate the actual condition of the air-conditioning load, the load simulation system is required to be replaced to match the air-conditioning load of different vehicle types, but the simulated air-conditioning load is often limited by a rack space, long test preparation time and the like, and the universality is poor.
Disclosure of Invention
In view of the above, an objective of the embodiments of the present invention is to provide an engine accessory load simulation system, so as to avoid the drawback of poor versatility of the existing load simulation system due to the need of transplanting loads.
To achieve the above object, an embodiment of the present invention provides an engine accessory load simulation system, including:
the system comprises an engine, an air compressor load simulation module, an air conditioner load simulation module, a generator load simulation module and a control unit; the air compressor load simulation module comprises an air compressor, an air storage tank and an unloading valve, and the air conditioner load simulation module comprises an air conditioner compressor, a drying tank, a radiator, a condenser, an evaporator and a cooling fan; the generator load simulation module comprises a generator and a power regulation module;
the engine is used for driving one or more of the air compressor, the air-conditioning compressor and the generator to simultaneously operate when in operation;
the air compressor is used for compressing air and sending the compressed air into the air storage tank through a first pipeline; the unloading valve is used for closing the valve when the gas pressure in the gas storage tank is less than or equal to the opening pressure of the unloading valve, and automatically opening the valve for unloading when the gas pressure in the gas storage tank is greater than the opening pressure of the unloading valve;
the air conditioner compressor is used for compressing low-pressure low-temperature gas and sending high-temperature high-pressure gas obtained after compression into the drying tank through a second pipeline; the drying tank is used for dehumidifying the high-temperature high-pressure gas and sending the dehumidified high-temperature high-pressure gas into the radiator through a third pipeline; the radiator is used for cooling the dehumidified high-temperature and high-pressure gas and sending the high-temperature and high-pressure liquid obtained after cooling to the condenser through a fourth pipeline; the condenser is used for condensing the high-temperature high-pressure liquid and sending the low-pressure liquid obtained after condensation into the evaporator through a fifth pipeline; the evaporator is used for evaporating the low-pressure liquid while cooling the low-pressure liquid by using the cooling fan to obtain low-pressure low-temperature gas, and sending the low-pressure low-temperature gas back to the air-conditioning compressor through a sixth pipeline;
and the electric control unit is used for adjusting the consumed power of the power adjusting module through a control signal line so as to change the load of the generator.
Preferably, in the above system, the air compressor load simulation module further includes: a first pressure sensor mounted on the first pipeline;
the first pressure sensor is used for detecting the gas pressure in the first pipeline and transmitting a detected gas pressure signal to the control unit.
Preferably, in the above system, the air compressor load simulation module further includes: the first pressure gauge is arranged on the gas storage tank;
the first pressure gauge is used for detecting and displaying the value of the gas pressure in the gas storage tank.
Preferably, in the above system, the air compressor load simulation module further includes: a safety valve mounted on the gas tank;
the safety valve is used for controlling the self valve to automatically open when the gas pressure in the gas storage tank is greater than a preset pressure, and the preset pressure is greater than the opening pressure of the unloading valve.
Preferably, in the above system, the air compressor load simulation module further includes: the electromagnetic valve is arranged on a seventh pipeline, and the seventh pipeline is a gas transmission pipeline connected with the gas storage tank;
the electromagnetic valve is used for opening or closing the valve under the control of the control unit.
Preferably, in the above system, the air conditioning load simulation module further includes: the second pressure sensor and the second pressure gauge are installed on the second pipeline;
a second pressure sensor for detecting a gas pressure in the second pipeline and transmitting a detected gas pressure signal to the control unit;
and the second pressure gauge is used for detecting and displaying the gas pressure value in the second pipeline.
Preferably, in the above system, the air conditioning load simulation module further includes: the temperature sensor, the third pressure sensor and the third pressure gauge are arranged on the sixth pipeline;
the temperature sensor is used for detecting a gas temperature signal in the sixth pipeline and transmitting the gas temperature signal to the control unit;
a third pressure sensor for detecting a gas pressure in the sixth pipeline and transmitting a detected gas pressure signal to the control unit;
and the third pressure gauge is used for detecting and displaying the gas pressure value in the sixth pipeline.
Preferably, the system further comprises:
and the rack power measuring system is used for controlling the engine to operate under different working conditions and acquiring the operating parameters of the engine under the working conditions.
Preferably, the system further comprises:
and the rack main control system is used for sending a control signal to the control unit or receiving the detection parameter sent by the control unit.
According to the engine accessory load simulation system provided by the embodiment of the invention, the air compressor load simulation module, the air conditioner load simulation module and the generator load simulation module in the engine accessory are integrated into one system, when an engine bench test is carried out, the load simulation modules can be controlled independently or simultaneously, each load simulation module can provide a load which changes within a certain range, and the system can carry out stepless regulation on the load, so that the system has strong universality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of one embodiment of an engine accessory load simulation system according to the present invention;
FIG. 2 is a second schematic diagram of the engine accessory load simulation system according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic diagram of an engine accessory load simulation system according to an embodiment of the present invention is shown, the system including: the system comprises an engine 1, an air compressor load simulation module 2, an air conditioner load simulation module 3, a generator load simulation module 5 and a control unit 4. Wherein,
the control unit 4 and the air compressor load simulation module 2 form a load simulation subsystem of the air compressor;
the control unit 4 and the air conditioner load simulation module 3 form a load simulation subsystem of the air conditioner compressor;
the control unit 4 and the generator load simulation module 5 form a load simulation subsystem of the generator.
In the test process, the control unit 4 may perform parameter acquisition on each load simulation subsystem, and control the operation of each load simulation subsystem.
The load simulation subsystems can complete the load simulation cycle endurance test or performance test of the engine with accessories together with the engine 1, the transmission shaft 6 and the stand dynamometer system 7.
The bench power measuring system 7 is used for controlling the engine 1 to operate under different working conditions and collecting operating parameters of the engine 1 under the working conditions. During specific implementation, the bench power measuring system 7 can control the whole engine to operate independently, and can also control the engine to operate simultaneously with accessory loads (the accessory loads are one or more of the air compressor load simulation module 2, the air conditioner load simulation module 3 and the generator load simulation module 5), and the bench power measuring system 7 can control the engine 1 to operate under different working conditions and collect the operating parameters of the engine 1 in the process.
Further, the system may further include a gantry master control system, configured to send a control signal to the control unit 4, or receive a detection parameter sent by the control unit 4. During specific implementation, the control unit 4 further supports a CAN (controller area network) communication function, the rack master control system CAN interact with the control unit 4 through CAN communication, so that the control unit 4 is used for performing parameter acquisition, recording, control and the like on each load simulation subsystem, and the control unit 4 is used for feeding back results of the parameter acquisition, the recording, the control and the like to the rack master control system. Therefore, the rack master control system CAN complete the control of each load simulation subsystem through the control unit 4 by utilizing CAN communication, and CAN also conveniently integrate the control of each load simulation subsystem into the test of the program-controlled automatic operation of the engine (the program-controlled automatic operation means that a computer automatically adjusts the working condition of the engine according to a preset program and automatically collects and records the parameters of the engine in the test of the engine).
Referring to fig. 2, a second schematic diagram of a load simulation system for an engine accessory according to an embodiment of the present invention includes: the system comprises an engine 1, an air compressor load simulation module 2, an air conditioner load simulation module 3, a generator load simulation module 5 and a control unit 4; besides, the method also comprises the following steps: a transmission shaft 6, a bench power measuring system 7 and a bench master control computer 22 (corresponding to the bench master control system).
Before the embodiments of the present invention are described, the names corresponding to the respective numerical references in the drawings are given below:
1. the system comprises an engine, 2, an air compressor load simulation module, 3, an air conditioner load simulation module, 4, a control unit, 5, a generator load simulation module, 6, a connecting shaft, 7, a rack dynamometer system, 8, an air compressor, 9, an air compressor air outlet, 10, a second pressure sensor, 11, a second pressure gauge, 12, a first pressure sensor, 13, a manual air release valve, 14, a first pressure gauge, 15, an air storage tank, 16, a safety valve, 17, an unloading valve, 18, an electromagnetic valve, 19, a drying tank, 20, a radiator, 21, a condenser, 22, a rack main control computer, 23, an evaporator, 24, a cooling fan, 25, a control signal line, 26, a temperature sensor, 27, a third pressure sensor, 28, a third pressure gauge, 29, a power regulation module, 30, a generator anode, 31, a generator cathode, 32, a generator, 33, an air conditioner compressor low-pressure gas return port, 34. a low-pressure pressurizing vacuumizing port 35, an air conditioner compressor 36, a high-pressure pressurizing vacuumizing port 37 and a high-pressure gas outlet of the air conditioner compressor.
The bench work-measuring system 7 controls the operation of the engine 1, and the engine 1 is used for driving one or more of the air compressor, the air-conditioning compressor and the generator to operate simultaneously when in operation. Wherein, the air compressor, the air condition compressor and the generator adopt original components of the engine.
The following respectively introduces the composition, connection mode and function of the air compressor load simulation module 2, the air conditioner load simulation module 3 and the generator load simulation module 5 one by one:
1. air compressor load simulation module 2
The air compressor load simulation module 2 comprises an air compressor 8, an air storage tank 15 and an unloading valve 17.
The air compressor 8 is configured to compress air and send the compressed air into the air storage tank 15 through a first pipeline.
The unloading valve 17 is configured to close the valve when the gas pressure in the gas storage tank 15 is less than or equal to the opening pressure of the unloading valve 17, and automatically open the valve for unloading when the gas pressure in the gas storage tank 15 is greater than the opening pressure of the unloading valve 17.
Further, the air compressor load simulation module 2 further includes: a first pressure sensor 12 installed on the first pipeline, a first pressure gauge 14 installed on the gas storage tank 15, a safety valve 16 installed on the gas storage tank 15, and an electromagnetic valve 18 installed on a seventh pipeline, where the seventh pipeline is a gas pipeline connected with the gas storage tank 15.
The first pressure sensor 12 is configured to detect a gas pressure in the first pipeline and transmit a detected gas pressure signal to the control unit 4.
The first pressure gauge 14 is configured to detect and display a pressure value of the gas in the gas storage tank 15.
The safety valve 16 is configured to control the self valve to automatically open when the gas pressure in the gas storage tank 15 is greater than a preset pressure, where the preset pressure is greater than the opening pressure of the unloading valve.
The solenoid valve 18 is used for opening or closing a valve under the control of the control unit 4.
In specific implementation, when the engine 1 runs, the air compressor 8 is driven to pump air, gas is compressed and then is sent to the gas storage tank 15 through the air compressor air outlet 9, the gas pressure in the gas storage tank 15 can be read through the first pressure gauge 14, a gas pipeline (first pipeline) between the air compressor 8 and the gas storage tank 15 is provided with the first pressure sensor 12, and the first pressure sensor 12 transmits a currently detected gas pressure signal on the first pipeline to the control unit 4; the air storage tank 15 is provided with an unloading valve 17 with a one-way valve, the unloading pressure of the unloading valve 17 needs to be adjusted to the set pressure required by the test before the test (the set pressure is the opening pressure of the unloading valve 17), in the test process, if the current pressure value in the air storage tank 15 does not exceed or is equal to the set pressure value, the unloading valve 17 is in a closed state, if the current pressure value in the air storage tank 15 exceeds the set pressure value, the unloading valve 17 is opened for unloading, and because the unloading pressure of the unloading valve 17 can be adjusted, the load system can simulate loads of different sizes, so that the load condition of the air compressor 8 in the actual application of the whole vehicle can be simulated.
In addition, for safety, the air tank 15 is further provided with a safety valve 16, and the safety valve 16 is normally in a closed state, and the opening pressure of the safety valve 16 is larger than that of the unloading valve 18. In practical applications, if the unloading valve 18 reaches the opening pressure, but the unloading valve 18 is not opened for unloading due to damage of the unloading valve 18, the gas pressure in the gas tank 15 will continuously rise, and when the gas pressure in the gas tank 15 rises to the preset pressure set for the safety valve 16, the valve of the safety valve 16 will automatically open for unloading.
In addition, an electromagnetic valve 18 is installed on an air path connected with the air storage tank 15, and the electronic control unit 4 can determine whether to apply a load to the air compressor 8 by controlling the on-off of the electromagnetic valve 18. When the control unit 4 controls the solenoid valve 18 to open, the air tank 15 will be open to the atmosphere, indicating that no load is applied to the air compressor 8, and when the control unit 4 controls the solenoid valve 18 to close, the air pressure in the air tank 15 will rise, indicating that a load is applied to the air compressor 8.
2. The air conditioner load simulation module 3
The air-conditioning load simulation module 3 comprises an air-conditioning compressor 35, a drying tank 19, a radiator 20, a condenser 21, an evaporator 23 and a cooling fan 24;
the air conditioner compressor 35 is used for compressing low-pressure low-temperature gas and sending high-temperature high-pressure gas obtained after compression into the drying tank through a second pipeline;
the drying tank 19 is used for dehumidifying the high-temperature high-pressure gas and sending the dehumidified high-temperature high-pressure gas into the radiator through a third pipeline;
the radiator 20 is configured to cool the dehumidified high-temperature and high-pressure gas, and send the cooled high-temperature and high-pressure liquid to the condenser through a fourth pipeline;
the condenser 21 is configured to condense the high-temperature high-pressure liquid, and send a low-pressure liquid obtained after condensation to the evaporator through a fifth pipeline;
the evaporator 23 is configured to evaporate the low-pressure liquid while cooling the low-pressure liquid by using the cooling fan 24 to obtain low-pressure low-temperature gas, and send the low-pressure low-temperature gas back to the air-conditioning compressor through a sixth pipeline.
Further, the air conditioner load simulation module further includes: a second pressure sensor 10 and a second pressure gauge 11 mounted on the second pipeline; a temperature sensor 26, a third pressure sensor 27 and a third pressure gauge 28 mounted on the sixth line.
A second pressure sensor 10 for detecting a gas pressure in the second pipeline and transmitting a detected gas pressure signal to the control unit 4;
and the second pressure gauge 11 is used for detecting and displaying the pressure value of the gas in the second pipeline.
A temperature sensor 26 for detecting a gas temperature signal in the sixth pipeline and transmitting the gas temperature signal to the control unit 4;
a third pressure sensor 27 for detecting a gas pressure in the sixth pipeline and transmitting a detected gas pressure signal to the control unit 4;
and the third pressure gauge 28 is used for detecting and displaying the pressure value of the gas in the sixth pipeline.
During specific implementation, the engine 1 operates to drive the air-conditioning compressor 35 to operate, compressed high-temperature and high-pressure gas is sent out through the high-pressure gas outlet 37 of the air-conditioning compressor, and is sent into the drying tank 19 through a second pipeline between the air-conditioning compressor 35 and the drying tank 19; a second pressure sensor 10 and a second pressure gauge 11 are connected to the second pipeline for real-time monitoring of the pressure of the high-temperature and high-pressure gas flowing through, the high-temperature and high-pressure gas is dehumidified by a drying tank 19 and then sent to a radiator 20 through a third pipeline for cooling, the cooled high-temperature and high-pressure gas is cooled into high-temperature and high-pressure liquid, the high-temperature and high-pressure liquid is sent to the condenser 21 through a fourth pipeline, the high-temperature and high-pressure liquid is condensed by the condenser 21 and then changed into low-pressure liquid, the low-pressure liquid obtained after condensation is sent to the evaporator 23 through a fifth pipeline, and the low-pressure liquid is cooled and evaporated by the evaporator 23 and the cooling fan 24 and then changed into low-pressure and, finally, the low-pressure gas returns to the air-conditioning compressor 35 through a third pipeline provided with a temperature sensor 26, a third pressure sensor 27 and a third pressure gauge 28 and a low-pressure gas return port 33 of the air-conditioning compressor.
The control unit 4 monitors the temperature and the pressure in real time during the operation of the load by means of the pressure sensor 10, the temperature sensor 26 and the pressure sensor 27. The control unit 4 controls the on/off of the electromagnetic clutch of the air conditioning compressor 35 to perform the application or non-application of the air conditioning load, and the size adjustment of the air conditioning load is performed by matching the radiator 20 and the evaporator 23.
When the refrigerant is added to the air-conditioning compressor 35, the air-conditioning compressor 35 is evacuated through the low-pressure pressurizing vacuum port 34 and the low-pressure pressurizing vacuum port 36.
3. The generator load simulation module 5
The generator load simulation module 5 includes a generator 32 and a power conditioning module 29.
The electronic control unit 4 is configured to adjust the consumed power of the power adjustment module 29 through a control signal line to change the load of the generator 32.
In specific implementation, the engine 1 operates to drive the generator 32 to operate, the power adjusting module 29 is connected with the positive pole 30 and the negative pole 31 of the generator through cables, and the electronic control unit 4 adjusts the consumed power of the power adjusting module 29 through the control signal line 25 to change the load of the generator 32. The power adjusting module 29 may be a fixed resistor, and the power adjustment is realized by adjusting the voltage across the resistor; in another mode, the resistance voltage is constant, power adjustment is realized by adjusting a slide rheostat or an adjustable large resistor, and stepless adjustment of load power can be performed by using the power adjustment module 29, so that simulation of different generator loads can be realized, and the actual operation condition of an engine can be better simulated.
According to the engine accessory load simulation system provided by the embodiment of the invention, the air compressor load simulation module, the air conditioner load simulation module and the generator load simulation module in the engine accessory are integrated into one system, when an engine bench test is carried out, the load simulation modules can be controlled independently or simultaneously, each load simulation module can provide a load which changes within a certain range, and the system can carry out stepless regulation on the load, so that the system has strong universality.
In addition, the system is provided with an independent control unit to realize the collection and control of load parameters, the control unit also supports CAN bus communication, the communication between the control unit and the rack master control system is realized through the CAN bus communication, and the recording of the load parameters, the adjustment of the load size, the load control and the program control automatic operation of the engine with load are realized through a master control program in the rack master control system.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An engine accessory load simulation system, the system comprising:
the system comprises an engine, an air compressor load simulation module, an air conditioner load simulation module, a generator load simulation module and a control unit; the air compressor load simulation module comprises an air compressor, an air storage tank and an unloading valve, and the air conditioner load simulation module comprises an air conditioner compressor, a drying tank, a radiator, a condenser, an evaporator and a cooling fan; the generator load simulation module comprises a generator and a power regulation module;
the engine is used for driving one or more of the air compressor, the air-conditioning compressor and the generator to simultaneously operate when in operation;
the air compressor is used for compressing air and sending the compressed air into the air storage tank through a first pipeline; the unloading valve is used for closing the valve when the gas pressure in the gas storage tank is less than or equal to the opening pressure of the unloading valve, and automatically opening the valve for unloading when the gas pressure in the gas storage tank is greater than the opening pressure of the unloading valve;
the air conditioner compressor is used for compressing low-pressure low-temperature gas and sending high-temperature high-pressure gas obtained after compression into the drying tank through a second pipeline; the drying tank is used for dehumidifying the high-temperature high-pressure gas and sending the dehumidified high-temperature high-pressure gas into the radiator through a third pipeline; the radiator is used for cooling the dehumidified high-temperature and high-pressure gas and sending the high-temperature and high-pressure liquid obtained after cooling to the condenser through a fourth pipeline; the condenser is used for condensing the high-temperature high-pressure liquid and sending the low-pressure liquid obtained after condensation into the evaporator through a fifth pipeline; the evaporator is used for evaporating the low-pressure liquid while cooling the low-pressure liquid by using the cooling fan to obtain low-pressure low-temperature gas, and sending the low-pressure low-temperature gas back to the air-conditioning compressor through a sixth pipeline;
the control unit is used for adjusting the consumed power of the power adjusting module through a control signal line so as to change the load size of the generator.
2. The system of claim 1, wherein the air compressor load simulation module further comprises: a first pressure sensor mounted on the first pipeline;
the first pressure sensor is used for detecting the gas pressure in the first pipeline and transmitting a detected gas pressure signal to the control unit.
3. The system of claim 1, wherein the air compressor load simulation module further comprises: the first pressure gauge is arranged on the gas storage tank;
the first pressure gauge is used for detecting and displaying the value of the gas pressure in the gas storage tank.
4. The system of claim 1, wherein the air compressor load simulation module further comprises: a safety valve mounted on the gas tank;
the safety valve is used for controlling the self valve to automatically open when the gas pressure in the gas storage tank is greater than a preset pressure, and the preset pressure is greater than the opening pressure of the unloading valve.
5. The system of claim 1, wherein the air compressor load simulation module further comprises: the electromagnetic valve is arranged on a seventh pipeline, and the seventh pipeline is a gas transmission pipeline connected with the gas storage tank;
the electromagnetic valve is used for opening or closing the valve under the control of the control unit.
6. The system of claim 1, wherein the air conditioning load simulation module further comprises: the second pressure sensor and the second pressure gauge are installed on the second pipeline;
a second pressure sensor for detecting a gas pressure in the second pipeline and transmitting a detected gas pressure signal to the control unit;
and the second pressure gauge is used for detecting and displaying the gas pressure value in the second pipeline.
7. The system of claim 1, wherein the air conditioning load simulation module further comprises: the temperature sensor, the third pressure sensor and the third pressure gauge are arranged on the sixth pipeline;
the temperature sensor is used for detecting a gas temperature signal in the sixth pipeline and transmitting the gas temperature signal to the control unit;
a third pressure sensor for detecting a gas pressure in the sixth pipeline and transmitting a detected gas pressure signal to the control unit;
and the third pressure gauge is used for detecting and displaying the gas pressure value in the sixth pipeline.
8. The system of any one of claims 1 to 7, further comprising:
and the rack power measuring system is used for controlling the engine to operate under different working conditions and acquiring the operating parameters of the engine under the working conditions.
9. The system of any one of claims 1 to 7, further comprising:
and the rack main control system is used for sending a control signal to the control unit or receiving the detection parameter sent by the control unit.
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| CN201310721557.XA CN103698131B (en) | 2013-12-24 | 2013-12-24 | A kind of engine accessory power rating load simulation system |
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| CN201310721557.XA CN103698131B (en) | 2013-12-24 | 2013-12-24 | A kind of engine accessory power rating load simulation system |
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| CN103698131B true CN103698131B (en) | 2016-01-20 |
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| CN109668736A (en) * | 2019-01-09 | 2019-04-23 | 湖南研华机电设备有限公司 | A kind of engine air conditioner load testing equipment |
| CN109763972A (en) * | 2019-03-08 | 2019-05-17 | 中通客车控股股份有限公司 | A kind of electric motor coach air compressor test macro and method |
| CN111665798B (en) * | 2020-05-18 | 2022-04-12 | 东风汽车股份有限公司 | Engine front end wheel train accessory endurance test control system |
| CN111665052B (en) * | 2020-05-18 | 2022-04-08 | 东风汽车股份有限公司 | Engine front end wheel train accessory durability test method |
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| CN103134687A (en) * | 2013-01-30 | 2013-06-05 | 奇瑞汽车股份有限公司 | Air conditioning system simulation loading device in engine bench test |
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| US7726183B2 (en) * | 2004-05-24 | 2010-06-01 | Avl List Gmbh | Test rig for internal combustion engines |
| CN102305715A (en) * | 2011-05-20 | 2012-01-04 | 清华大学 | Dynamic load simulating device and method for automobile power system test |
| CN202974662U (en) * | 2012-12-29 | 2013-06-05 | 潍柴动力股份有限公司 | Engine operating condition testing device |
| CN103134687A (en) * | 2013-01-30 | 2013-06-05 | 奇瑞汽车股份有限公司 | Air conditioning system simulation loading device in engine bench test |
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