A multifunctional cooling system test bench

Abstract

The application discloses a multifunctional cooling system test bench, which comprises an engine, a heating element, a radiator and an electronic water pump which are connected in sequence through pipelines, an electromagnetic valve is connected in parallel between the liquid inlet and the liquid outlet of the engine, a proportional valve is connected in parallel between the liquid inlet and the liquid outlet of the radiator, a first flowmeter is connected to the liquid outlet of the heating element, a first temperature and pressure sensor is connected between the electronic water pump and the engine, a second temperature and pressure sensor is connected between the engine and the heating element, a third temperature and pressure sensor is connected between the heating element and the radiator, a fourth temperature and pressure sensor is connected between the radiator and the electronic water pump, and the liquid outlet of the engine is connected with the liquid outlet of the radiator through a branch pipeline, a liquid storage pot and a second flowmeter are connected to the branch pipeline. The multifunctional cooling system test bench can simultaneously satisfy the performance test of the radiator, the electronic water pump and the engine, simplifies the arrangement and control, reduces the test cost and saves the test time.

Description

Technical Field

[0001] This invention relates to engine cooling systems, and more specifically to a multifunctional cooling system test bench. Background Technology

[0002] With the development of the automotive industry, the requirements for engine emissions and fuel consumption are becoming increasingly stringent. The quality of the cooling system design is crucial to engine emissions and fuel consumption. However, the design capabilities of various OEMs and component suppliers for cooling systems vary considerably, and there are no corresponding national or industry standards to guide the design of cooling systems. Currently, most OEMs also lack professional test benches for quickly testing the performance of cooling systems and can only rely on data provided by component suppliers, whose data accuracy, completeness, and timeliness are difficult to guarantee.

[0003] Currently, the most important parameters affecting the performance of the cooling system include: engine (cylinder block, cylinder head) water jacket flow rate and flow resistance characteristics; engine water pump flow rate, head characteristics, efficiency characteristics; radiator flow rate and flow resistance characteristics, etc.

[0004] See Figure 1 The radiator performance test bench includes a radiator 3, a temperature-controlled water tank assembly 18, an electronic water pump 4, an existing flow meter 19, and two existing temperature and pressure sensors 20. Performance tests are conducted on different radiators 3. Different coolant temperatures are achieved by adjusting the temperature-controlled water tank assembly 18, and different flow rates are achieved by adjusting the electronic water pump 4. The flow rate of the existing flow meter 19 and the temperature and pressure of the two existing temperature and pressure sensors 20 are recorded to determine the performance parameters of different radiators 3.

[0005] See Figure 2 The electronic water pump performance test bench includes a temperature-controlled water tank assembly 18, an electronic water pump 4, an existing flow meter 19, a proportional valve 6, and two existing temperature and pressure sensors 20. For performance testing of different electronic water pumps 4, different coolant temperatures are achieved by adjusting the temperature-controlled water tank assembly 18. The speed of the electronic water pump 4 and the opening of the proportional valve 6 are adjusted, and the flow rate of the existing flow meter 19 and the temperature and pressure of the two existing temperature and pressure sensors 20 are recorded, thereby testing the performance parameters of different electronic water pumps 4 at different speeds.

[0006] See Figure 3The engine performance test bench includes an electronic water pump 4, an engine 1, two existing flow meters 19, a three-way pipe, a reservoir 12, two existing temperature and pressure sensors 20, a heat exchanger 21, and a coolant tank 22. For different engine 1 performance tests, the speed of the electronic water pump 4 is adjusted to allow the coolant in the coolant tank 22 to exchange heat with the engine 1's water circuit through the heat exchanger 21, controlling different water temperatures. By adjusting the engine 1's speed, the flow rates of the two existing flow meters 19 and the temperatures and pressures of the two existing temperature and pressure sensors 20 are recorded, thereby testing the performance parameters of different engines 1 at different speeds.

[0007] Currently, the temperature control tank assembly of radiator and electric water pump performance test benches is complex and costly; engine performance test benches require a dynamometer to drive the engine, which not only increases the cost of the test bench but also makes the installation fixtures for different engines inconsistent, resulting in time-consuming testing; if testing the performance of engines from other OEMs is required, it is difficult to achieve due to inconsistencies in engine control software; therefore, it is difficult to establish a database of cooling systems. Summary of the Invention

[0008] The purpose of this invention is to provide a multifunctional cooling system test bench that can simultaneously meet the performance testing requirements of radiators, electric water pumps, and engines, simplifying layout and control, reducing testing costs, and saving testing time.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A multifunctional cooling system test bench includes an engine, a heating element, a radiator, and an electric water pump connected sequentially via pipelines. A solenoid valve is connected in parallel between the engine's inlet and outlet. A proportional valve is connected in parallel between the radiator's inlet and outlet. A first flow meter is connected to the outlet of the heating element. A first temperature and pressure sensor is connected between the electric water pump and the engine. A second temperature and pressure sensor is connected between the engine and the heating element. A third temperature and pressure sensor is connected between the heating element and the radiator. A fourth temperature and pressure sensor is connected between the radiator and the electric water pump. The engine outlet is connected to the radiator outlet via a branch line, on which a reservoir and a second flow meter are connected.

[0011] Furthermore, the engine's inlet is connected to the first outlet of the first three-way pipe, the solenoid valve's inlet is connected to the second outlet of the first three-way pipe, and the electronic water pump's outlet is connected to the first inlet of the first three-way pipe; the first temperature and pressure sensor is mounted on the first three-way pipe.

[0012] Furthermore, the outlet of the engine is connected to the second inlet of the second three-way pipe, the outlet of the solenoid valve is connected to the third inlet of the second three-way pipe, and the third outlet of the second three-way pipe is connected to the inlet of the heating element; the second temperature and pressure sensor is installed on the second three-way pipe.

[0013] Furthermore, the inlet of the radiator is connected to the fourth outlet of the third three-way pipe, the fourth inlet of the third three-way pipe is connected to the outlet of the heating element, and the fifth outlet of the third three-way pipe is connected to the inlet of the proportional valve.

[0014] The first flow meter is arranged between the fourth inlet of the third three-way pipe and the outlet of the heating element, and the third temperature and pressure sensor is installed on the third three-way pipe.

[0015] Furthermore, the outlet of the radiator is connected to the fifth inlet of the four-way pipe, the outlet of the proportional valve is connected to the sixth inlet of the four-way pipe, and the sixth outlet of the four-way pipe is connected to the inlet of the electronic water pump; the fourth temperature and pressure sensor is installed on the four-way pipe.

[0016] Furthermore, the outlet of the engine is connected to the inlet of the reservoir, and the reservoir is connected to the seventh inlet of the four-way pipe.

[0017] Furthermore, the second flow meter is connected between the liquid storage tank and the seventh inlet of the four-way pipe.

[0018] Furthermore, the heating element is a PTC.

[0019] The beneficial effects of this invention are:

[0020] This invention, through the rational arrangement of its components, can simultaneously measure the fluid performance of radiators, electric water pumps, and engines, and can also perform performance tests on individual components. It has the advantages of simple structure and layout, simple assembly, reliable performance, simple control and operation, strong practicality, and low cost. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the existing radiator performance test bench structure;

[0022] Figure 2 This is a schematic diagram of the existing electronic water pump performance test bench structure;

[0023] Figure 3 This is a schematic diagram of the existing engine performance test bench structure;

[0024] Figure 4 This is a schematic diagram of the test bench structure for the multifunctional cooling system described in this invention.

[0025] In the diagram, 1—engine, 2—heating element, 3—radiator, 4—electronic water pump, 5—solenoid valve, 6—proportional valve, 7—first flow meter, 8—first temperature and pressure sensor, 9—second temperature and pressure sensor, 10—third temperature and pressure sensor, 11—fourth temperature and pressure sensor, 12—liquid reservoir, 13—second flow meter, 14—first tee pipe, 15—second tee pipe, 16—third tee pipe, 17—four-way pipe;

[0026] 18—Temperature-controlled water tank assembly; 19—Existing flow meter; 20—Existing temperature and pressure sensor; 21—Heat exchanger; 22—Cooling water tank. Detailed Implementation

[0027] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] See Figure 4 The multi-functional cooling system test bench shown includes an engine 1, a heating element 2, a radiator 3, and an electric water pump 4 connected sequentially by pipes. A solenoid valve 5 is connected in parallel between the inlet and outlet of the engine 1. A proportional valve 6 is connected in parallel between the inlet and outlet of the radiator 3. A first flow meter 7 is connected to the outlet of the heating element 2. A first temperature and pressure sensor 8 is connected between the electric water pump 4 and the engine 1. A second temperature and pressure sensor 9 is connected between the engine 1 and the heating element 2. A third temperature and pressure sensor 10 is connected between the heating element 2 and the radiator 3. A fourth temperature and pressure sensor 11 is connected between the radiator 3 and the electric water pump 4. The outlet of the engine 1 is connected to the outlet of the radiator 3 via a branch line, on which a reservoir 12 and a second flow meter 13 are connected. The heating element 2 is a PTC (Polymer Transformer).

[0030] The inlet of the engine 1 is connected to the first outlet a of the first three-way pipe 14, the inlet of the solenoid valve 5 is connected to the second outlet b of the first three-way pipe 14, and the outlet of the electronic water pump 4 is connected to the first inlet c of the first three-way pipe 14. The first temperature and pressure sensor 8 is mounted on the first three-way pipe 14.

[0031] The outlet of the engine 1 is connected to the second inlet d of the second three-way pipe 15, the outlet of the solenoid valve 5 is connected to the third inlet e of the second three-way pipe 15, and the third outlet f of the second three-way pipe 15 is connected to the inlet of the heating element 2. The second temperature and pressure sensor 9 is mounted on the second three-way pipe 15.

[0032] The inlet of the radiator 3 is connected to the fourth outlet g of the third three-way pipe 16, the fourth inlet h of the third three-way pipe 16 is connected to the outlet of the heating element 2, and the fifth outlet i of the third three-way pipe 16 is connected to the inlet of the proportional valve 6.

[0033] The first flow meter 7 is arranged between the fourth inlet h of the third three-way pipe 16 and the outlet of the heating element 2, and the third temperature and pressure sensor 10 is installed on the third three-way pipe 16.

[0034] The outlet of the radiator 3 is connected to the fifth inlet j of the four-way pipe 17, the outlet of the proportional valve 6 is connected to the sixth inlet k of the four-way pipe 17, and the sixth outlet l of the four-way pipe 17 is connected to the inlet of the electronic water pump 4; the fourth temperature and pressure sensor 11 is installed on the four-way pipe 17.

[0035] The outlet of the engine 1 is connected to the inlet of the reservoir 12, and the outlet of the reservoir 12 is connected to the seventh inlet m of the four-way pipe 17. The second flow meter 13 is connected between the reservoir 12 and the seventh inlet m of the four-way pipe 17.

[0036] In specific operation, under mode one, radiator performance testing: When only radiator 3 is being tested, solenoid valve 5 is open, proportional valve 6 is closed, and coolant flows through electric water pump 4 into the first three-way pipe 14. From the first three-way pipe 14, coolant flows to engine 1 and solenoid valve 5 respectively. The coolant flowing to engine 1 merges with the coolant flowing to solenoid valve 5 in the second three-way pipe 15 and flows to heating element 2, then to third three-way pipe 16. A first flow meter 7 is installed between heating element 2 and third three-way pipe 16, and a third temperature and pressure sensor 10 is installed on third three-way pipe 16. Coolant flows from third three-way pipe 16 into radiator 3 and then to four-way pipe 17. The coolant flowing to engine 1 also flows to reservoir 12 and then to four-way pipe 17, where a fourth temperature and pressure sensor 11 is installed. Coolant gathers at four-way pipe 17 and then flows to electric water pump 4. The water temperature is controlled by controlling the heating element 2, and the flow rate of the coolant is controlled by controlling the speed of the electronic water pump 4. During the test, the flow rate measured by the first flow meter 7 and the temperature and pressure measured by the third temperature and pressure sensor 10 and the fourth temperature and pressure sensor 11 are recorded to obtain the flow rate and pressure characteristics of the radiator 3. For different models of radiators 3, simply replace the radiator 3 for measurement.

[0037] Mode 2, Electronic Water Pump Performance Test: When only the electronic water pump 4 is tested, the solenoid valve 5 is opened, and the proportional valve 6 adjusts the opening degree. The coolant flows through the electronic water pump 4 into the first three-way pipe 14, on which a first temperature and pressure sensor 8 is installed. The coolant flows from the first three-way pipe 14 to the engine 1 and the solenoid valve 5 respectively. One stream of coolant flowing to the engine 1 merges with the coolant flowing to the solenoid valve 5 in the second three-way pipe 15 and flows to the heating element 2, then to the third three-way pipe 16. A first flow meter 7 is installed between the heating element 2 and the third three-way pipe 16. At the third three-way pipe 16, the coolant splits into two streams: one stream flows to the radiator 3 and then to the four-way pipe 17; the other stream flows to the proportional valve 6 and then to the four-way pipe 17. The coolant flowing to engine 1 flows to reservoir 12 and then to four-way pipe 17. A fourth temperature and pressure sensor 11 is installed on four-way pipe 17. The coolant collects at four-way pipe 17 and then flows to electric water pump 4. The water temperature is controlled by heating element 2, and the back pressure is adjusted by controlling the opening of proportional valve 6. During the test, the speed of electric water pump 4 is adjusted, and the flow rates measured by the first flow meter 7 and the second flow meter 13 are recorded. The temperatures and pressures measured by the first temperature and pressure sensor 8 and the fourth temperature and pressure sensor 11 are also recorded. This allows the flow rate and pressure characteristics of electric water pump 4 at different speeds to be obtained. For different models of electric water pump 4, simply replace the electric water pump 4 for measurement.

[0038] Mode 3, Engine Water Jacket Performance Test: When only the water jacket of engine 1 is being tested, solenoid valve 5 is closed and proportional valve 6 is fully open. Coolant flows through electric water pump 4 into the first three-way pipe 14, on which a first temperature and pressure sensor 8 is installed. From the first three-way pipe 14, coolant flows to engine 1. The coolant flowing to engine 1 then flows through the second three-way pipe 15 to the heating element 2, on which a second temperature and pressure sensor 9 is installed. It then flows to the third three-way pipe 16, where a first flow meter 7 is installed between the heating element 2 and the third three-way pipe 16. At the third three-way pipe 16, the coolant splits into two paths: one flows to radiator 3 and then to four-way pipe 17, and the other flows to proportional valve 6 and then to four-way pipe 17. The coolant flowing to engine 1 also flows to reservoir 12 and then to four-way pipe 17. The coolant then collects at four-way pipe 17 and flows back to electric water pump 4. The water temperature is controlled by adjusting the heating element 2, and the proportional valve 6 is opened to its maximum extent to minimize the system back pressure. During the test, the speed of the electronic water pump 4 is adjusted to control the flow rate. The flow rates measured by the first flow meter 7 and the second flow meter 13 are recorded, as are the temperatures and pressures measured by the first temperature and pressure sensor 8 and the second temperature and pressure sensor 9. This allows the flow rate and pressure characteristics of the engine 1 water jacket at different temperatures to be obtained. For different models of engine 1, the measurement can be performed by simply replacing the engine 1. When measuring the performance of the engine 1 water jacket using this system, the engine 1 does not need to be started. Therefore, precise assembly of the engine 1 when fixed on the test bench is not required, greatly saving time. Thus, even if it is necessary to measure the water jacket performance of engines 1 from other OEMs, it becomes very easy, facilitating the establishment of a database and providing data support for determining parameter targets for newly designed engines 1.

[0039] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A multi-function cooling system test bench, characterized in that: The engine (1), heating element (2), radiator (3) and electronic water pump (4) are connected in sequence by pipes, the inlet and outlet of the engine (1) are connected in parallel with the electromagnetic valve (5), the inlet and outlet of the radiator (3) are connected in parallel with the proportional valve (6), the outlet of the heating element (2) is connected with the first flowmeter (7), the electronic water pump (4) and the engine (1) are connected with the first temperature pressure sensor (8), the engine (1) and the heating element (2) are connected with the second temperature pressure sensor (9), the heating element (2) and the radiator (3) are connected with the third temperature pressure sensor (10), the radiator (3) and the electronic water pump (4) are connected with the fourth temperature pressure sensor (11), the outlet of the engine (1) is connected with the outlet of the radiator (3) through a branch, the branch is connected with the liquid storage pot (12) and the second flowmeter (13).

2. The multi-functional cooling system test bed of claim 1, wherein: The inlet of the engine (1) is connected with the first outlet of the first three-way pipe (14), the inlet of the electromagnetic valve (5) is connected with the second outlet of the first three-way pipe (14), the outlet of the electronic water pump (4) is connected with the first inlet of the first three-way pipe (14); the first temperature pressure sensor (8) is installed on the first three-way pipe (14).

3. The multi-functional cooling system test bed of claim 1 or 2, wherein: The outlet of the engine (1) is connected with the second inlet of the second three-way pipe (15), the outlet of the electromagnetic valve (5) is connected with the third inlet of the second three-way pipe (15), the third outlet of the second three-way pipe (15) is connected with the inlet of the heating element (2); the second temperature pressure sensor (9) is installed on the second three-way pipe (15).

4. The multi-functional cooling system test bed of claim 1 or 2, wherein: The inlet of the radiator (3) is connected with the fourth outlet of the third three-way pipe (16), the fourth inlet of the third three-way pipe (16) is connected with the outlet of the heating element (2), the fifth outlet of the third three-way pipe (16) is connected with the inlet of the proportional valve (6); The first flowmeter (7) is arranged between the fourth inlet of the third three-way pipe (16) and the outlet of the heating element (2), and the third temperature pressure sensor (10) is installed on the third three-way pipe (16).

5. The multi-functional cooling system test bed of claim 1 or 2, wherein: The outlet of the radiator (3) is connected with the fifth inlet of the four-way pipe (17), the outlet of the proportional valve (6) is connected with the sixth inlet of the four-way pipe (17), the sixth outlet of the four-way pipe (17) is connected with the inlet of the electronic water pump (4); the fourth temperature pressure sensor (11) is installed on the four-way pipe (17).

6. The multi-functional cooling system test bed of claim 5, wherein: The outlet of the engine (1) is connected with the inlet of the liquid storage pot (12), and the liquid storage pot (12) is connected with the seventh inlet of the four-way pipe (17).

7. The multi-functional cooling system test bed of claim 5, wherein: The second flowmeter (13) is connected between the liquid storage pot (12) and the seventh inlet of the four-way pipe (17).

8. The multi-functional cooling system test bed of claim 1 or 2, wherein: The heating element (2) is PTC.

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