Diesel water ash sulfur mixing system and method for diesel engine performance testing

Abstract

The present application provides a kind of diesel water ash sulfur mixing system for diesel engine performance test, comprising: test system, for mixing diesel, ash powder, configure diesel ash powder mixed solution, and mixing diesel, water, ash powder and sulfide, configure mixed solution;Monitoring system, for the cleanliness of diesel ash powder mixed solution configured by test system is monitored in real time;Diesel filling system, for filling diesel to test system;Water filling system, for filling water to test system;Ash filling system, for filling ash powder to test system;Sulfur filling system, for filling sulfide to test system.The present application can automatically complete the accurate adjustment of each pollution level of diesel, configure different oil product diesel to test diesel engine, so as to improve the performance of diesel engine to adapt to different oil product diesel, improve the overall performance of diesel engine.

Description

Technical Field

[0001] This invention relates to the field of engine performance testing technology, and in particular to a diesel-water-ash-sulfur mixing system and method for diesel engine performance testing. Background Technology

[0002] A diesel engine is an engine that burns diesel fuel to obtain energy. Due to its high power and good economic performance, diesel engines are widely used in high-power heavy-duty trucks.

[0003] Heavy truck drivers often refuel with low-quality diesel fuel, which significantly impacts the performance of diesel engines and can even damage them. If diesel engines are tested with different grades of diesel fuel during the manufacturing process, their adaptability to various fuel types can be improved, thereby enhancing overall engine performance.

[0004] However, there is currently no device for configuring diesel fuel of different grades for performance testing during the diesel engine manufacturing process. Summary of the Invention

[0005] This invention provides a diesel-water-ash-sulfur mixing system and method for diesel engine performance testing, to solve the technical problem in the prior art that there is no device for configuring diesel fuel of different oil types for performance testing in the diesel engine manufacturing process.

[0006] The technical solution provided by this invention is as follows:

[0007] One object of the present invention is to provide a diesel-water-ash-sulfur mixing system for diesel engine performance testing, the mixing system comprising: a testing system for mixing diesel fuel and ash powder to prepare a diesel-ash powder mixture, and for mixing diesel fuel, water, ash powder and sulfides to prepare a mixture;

[0008] A monitoring system is used to monitor the cleanliness of the diesel-ash mixture configured in the test system in real time.

[0009] A diesel fueling system is used to fuel the test system with diesel fuel; a water fueling system is used to fuel the test system with water; an ash fueling system is used to fuel the test system with ash powder; and a sulfur fueling system is used to fuel the test system with sulfides.

[0010] In a preferred embodiment, the test system includes a mixing tank and a stirring device, the stirring device being installed inside the first mixing tank;

[0011] The bottom of the mixing tank is connected to a first three-way valve, which is connected in sequence to a first pipeline, a second pipeline, and a third pipeline. The third pipeline is connected to the top of the mixing tank, and a sampling valve is installed on the second pipeline.

[0012] In a preferred embodiment, the test system further includes a fourth conduit, which is arranged in parallel with the second conduit.

[0013] Wherein, one end of the fourth pipeline is connected to the first pipeline through a second three-way valve, and the other end of the fourth pipeline is connected to the third pipeline;

[0014] The fourth pipeline is sequentially equipped with a separation filter, a first precision filter, and a one-way valve.

[0015] In a preferred embodiment, a test pump is arranged on the first pipeline, the test pump being located between the first three-way valve and the second three-way valve.

[0016] In a preferred embodiment, the mixing tank is provided with a first external interface and a second external interface for connecting the return port and the inlet port of the diesel engine.

[0017] In a preferred embodiment, the diesel refueling system includes a clean fuel tank, a fifth pipeline, and a sixth pipeline; the monitoring system includes a seventh pipeline.

[0018] The bottom of the clean oil tank is connected to a third three-way valve, which is connected to the fifth pipeline. The fifth pipeline is connected to the test system for adding diesel fuel to the test system.

[0019] One end of the sixth pipeline is connected to the fifth pipeline via a fourth three-way valve, and the other end of the sixth pipeline is connected to the clean oil tank;

[0020] The seventh pipeline connects the clean oil tank and the test system, and a particle counter and a shut-off valve are arranged sequentially along the seventh pipeline from the clean oil tank to the test system.

[0021] In a preferred embodiment, the monitoring system further includes an eighth pipeline and a ninth pipeline;

[0022] A flow mixer is arranged between the particle counter and the shut-off valve; the eighth pipeline and the ninth pipeline are arranged in parallel, the eighth pipeline is connected to the flow mixer and the clean oil tank, and the ninth pipeline is connected to the clean oil tank.

[0023] The eighth pipeline is equipped with a first dilution metering pump, and the ninth pipeline, along the direction from the clean oil tank to the mixer, is equipped with a second dilution metering pump and a second precision filter in sequence.

[0024] In a preferred embodiment, a clean oil pump and a third precision filter are arranged sequentially between the third three-way valve and the fourth three-way valve.

[0025] In a preferred embodiment, the mixing system further includes an auxiliary system for providing injection pressure to the water injection system and / or the sulfur injection system.

[0026] Another object of the present invention is to provide a method for mixing diesel, water, ash, and sulfur for diesel engine performance testing. The method utilizes the mixing system provided by the present invention to mix diesel, water, ash, and sulfur, and includes the following steps:

[0027] S1. The diesel fueling system adds diesel fuel to the test system;

[0028] S2. The ash injection system injects ash powder into the test system, and the test system mixes diesel and ash powder to prepare a diesel-ash powder mixture.

[0029] S3. The monitoring system monitors the cleanliness of the diesel-ash mixture prepared by the test system in real time.

[0030] S4. A water injection system and / or a sulfur injection system inject water and / or sulfides into the test system, wherein the test system mixes diesel, water, ash powder and sulfides to prepare a mixture.

[0031] During the preparation of the mixture, the mixture prepared by the test system is collected, and the water content and sulfur content of the prepared mixture are monitored externally.

[0032] The above-described technical solution of the present invention has at least the following beneficial effects compared with the prior art:

[0033] This invention provides a diesel-water-ash-sulfur mixing system and method for diesel engine performance testing. It can configure diesel contamination level, water content, sulfur content, and custom contaminant liquid, thereby enabling diesel engine manufacturing process to conduct fuel adaptability tests, as well as fuel adaptability tests for low-pressure and high-pressure fuel injection performance.

[0034] This invention provides a diesel-water-ash-sulfur mixing system and method for diesel engine performance testing. It can automatically and precisely adjust the various pollution levels of diesel fuel, and test diesel engines with different types of diesel fuel, thereby improving the performance of diesel engines to adapt to different types of diesel fuel and enhancing the overall performance of diesel engines. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a structural block diagram of a diesel-water-ash-sulfur mixing system for diesel engine performance testing according to the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the device or object preceding the term encompasses the device or object listed following the term and its equivalents, without excluding other devices or objects. The terms “connected,” “linked,” or “connected,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0039] It should be noted that the terms "up", "down", "left", "right", "front", and "back" used in this invention are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0040] According to embodiments of the present invention, a diesel-water-ash-sulfur mixing system is provided for diesel engine performance testing, so as to conduct adaptability tests on diesel engines for different oil products (diesel with different pollution levels).

[0041] Combination Figure 1According to an embodiment of the present invention, a diesel-water-ash-sulfur mixing system for diesel engine performance testing is provided, comprising a testing system Y, a monitoring system C, a diesel filling system D, a water filling system S, a sulfur filling system L, an ash filling system H, and an auxiliary system F.

[0042] Test system Y is used to mix diesel and ash to prepare diesel-ash mixture, and to mix diesel, water, ash and sulfides to prepare mixture.

[0043] Specifically, the test system Y includes a mixing tank 1 and a stirring device 2. The stirring device 2 is installed inside the first mixing tank 1. The bottom of the mixing tank 1 is connected to a first three-way valve 6a, which is sequentially connected to a first pipeline G1, a second pipeline G2, and a third pipeline G3. The third pipeline G3 is connected to the top of the mixing tank 1 to form a circulation loop. A sampling valve 11 is installed on the second pipeline G2.

[0044] The mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 form a circulation loop, and the test pump 7 is arranged on the first pipeline G1.

[0045] After diesel and ash powder are injected into the mixing tank 1, the stirring device 2 stirs the diesel-ash powder mixture while the test pump 7 pumps the diesel-ash powder mixture into the circulation loop formed by the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 to make it circulate evenly.

[0046] When diesel, water, ash powder and sulfides are injected into the mixing tank 1, the stirring device 2 stirs the diesel-ash powder mixture while the test pump 7 pumps the mixture into the circulation loop formed by the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 to circulate it evenly.

[0047] According to an embodiment of the present invention, the test system Y further includes a fourth pipeline G4, which is arranged in parallel with the second pipeline G2. One end of the fourth pipeline G4 is connected to the first pipeline G1 via a second three-way valve 6b, and the other end of the fourth pipeline G4 is connected to the third pipeline G3. A separation filter 8, a first precision filter 9a, and a one-way valve 10 are sequentially arranged on the fourth pipeline G4. A test pump 7 is arranged on the first pipeline G1, and the test pump 7 is located between the first three-way valve 6a and the second three-way valve 6b.

[0048] By switching the second three-way valve 6b, a circulation loop is formed between the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the fourth pipeline G4, and the third pipeline G3, thereby dewatering and purifying the test system Y. After dewatering and purification, the treated oil is discharged by switching the first three-way valve 6a.

[0049] According to an embodiment of the present invention, a first external interface 3a and a second external interface 3b are respectively provided on the mixing tank 1 for connecting the return port and the inlet port of the diesel engine. After the mixture of diesel, water, ash powder and sulfide is prepared, the first external interface 3a and the second external interface 3b are connected to the return port and the inlet port of the diesel engine to conduct an oil compatibility test on the diesel engine.

[0050] After the diesel engine has completed the oil compatibility test, the remaining mixture is drained by switching the first three-way valve 6a.

[0051] In a preferred embodiment, the test system Y further includes a first level gauge 4a and a thermometer 5, which are installed on the mixing tank 1. During the process of injecting diesel into the mixing tank 1, the first level gauge 4a monitors whether the liquid level in the mixing tank 1 reaches the test requirements, and the thermometer 5 is used to monitor the diesel-ash mixture during the mixing process, as well as the temperature of the mixture of diesel, water, ash, and sulfides.

[0052] According to an embodiment of the present invention, monitoring system C is used to monitor the cleanliness of the diesel-ash mixture configured in test system Y in real time. Diesel refueling system D is used to refuel test system Y with diesel fuel.

[0053] Specifically, the diesel refueling system D includes a clean fuel tank 16 and a fifth pipeline G5. The bottom of the clean fuel tank 16 is connected to a third three-way valve 6c, which in turn connects to the fifth pipeline G5. The fifth pipeline G5 is connected to the test system Y for refueling the test system Y with diesel fuel. A clean fuel pump 17 and a third precision filter 9c are mounted on the fifth pipeline G5.

[0054] Furthermore, the fifth pipeline G5 is connected to the mixing tank 1 of the test system Y, thereby adding clean diesel fuel from the clean tank 16 to the mixing tank 1 of the test system Y.

[0055] A second level gauge 4b ​​is installed on the clean oil tank 16. Before adding diesel to the mixing tank 1 of the test system Y, clean diesel is injected into the clean oil tank 16 by switching the third three-way valve 6c. The level in the clean oil tank 16 is monitored by the second level gauge 4b ​​to see if it meets the test requirements.

[0056] When diesel fuel is added from the clean oil tank 16 of the diesel fuel filling system D to the mixing oil tank 1 of the test system Y, the clean oil pump 17 pumps the clean diesel fuel through the third precision filter 9c into the mixing oil tank 1 of the test system Y by switching the third three-way valve 6c.

[0057] In some preferred embodiments, the fifth pipeline G5 is also equipped with a first flow meter 18a and a first throttle valve 19a. The first flow meter 18a is used to monitor the amount of diesel fuel injected into the mixing tank 1 of the test system Y, and the first throttle valve 19a is used to adjust the flow rate of the injected diesel fuel.

[0058] The diesel refueling system D also includes a sixth pipeline G6, one end of which is connected to the fifth pipeline G5 via a fourth three-way valve 6d, and the other end of which is connected to the clean fuel tank 16. A clean fuel pump 17 and a third precision filter 9c are arranged sequentially between the third three-way valve 6c and the fourth three-way valve 6d.

[0059] Before diesel fuel is added from the clean fuel tank 16 of the diesel fuel filling system D to the mixing tank 1 of the test system Y, the clean fuel tank 16, the third three-way valve 6c, the fifth pipeline G5, and the sixth pipeline G6 form a circulation loop by switching the fourth three-way valve 6d, thereby removing water and purifying the diesel fuel filling system D. After the water removal and purification process, the treated fuel is discharged by switching the third three-way valve 6c.

[0060] According to an embodiment of the present invention, the monitoring system C is used to monitor the cleanliness of the diesel-ash mixture configured in the test system Y in real time.

[0061] Specifically, the monitoring system C includes a seventh pipeline G7, which connects the clean oil tank 16 and the test system Y. A particle counter 14 and a shut-off valve 12 are sequentially arranged on the seventh pipeline G7 along the direction from the clean oil tank 16 to the test system Y. Further, the seventh pipeline G7 connects the clean oil tank 16 and the test system Y via a third pipeline G3.

[0062] Since the particle counter 14 works by refraction counting, the free water in the oil will affect the detection accuracy of the particle counter 14. After adding water and sulfides, the particle counter 14 will not be able to be used for monitoring. Therefore, the particle counter 14 should be used only when there are particulate matter.

[0063] Therefore, before adding water and sulfides to test system Y, the cleanliness of the diesel-ash mixture prepared in test system Y is monitored in real time by monitoring system C. After the pollution level of the diesel-ash mixture is prepared, water and sulfides are added to test system Y to prepare a mixture of diesel, water, ash and sulfides.

[0064] According to an embodiment of the present invention, after the ash filling system H adds ash powder to the mixing tank 1 of the test system Y, the stirring device 2 stirs the diesel-ash powder mixture, and the test pump 7 pumps the diesel-ash powder mixture into the circulation loop formed by the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 for circulation flow to make it evenly distributed. By opening the shut-off valve 12, the diesel-ash powder mixture is sampled by the third pipeline G3. The pollution level configuration of the diesel-ash powder mixture is monitored in real time (online) by the particle counter 14. The small amount of diesel-ash powder mixture sampled is then returned to the clean oil tank 16.

[0065] When the contamination level of the diesel fuel dust mixture exceeds the standard (for example, reaching ISO 4406 standard level 23, with a particle count range of 40,000 particles / ml to 80,000 particles / ml), it will exceed the limit error range of the particle counter 14. Therefore, it is necessary to dilute the sampled small amount of diesel fuel dust mixture.

[0066] Therefore, the monitoring system C of the present invention further includes an eighth pipeline G8 and a ninth pipeline G9. A mixer 13 is installed on the seventh pipeline G7, and the mixer 13 is arranged between the particle counter 14 and the shut-off valve 12. The eighth pipeline G8 and the ninth pipeline G9 are arranged side by side, with the eighth pipeline G8 connecting the mixer 13 and the clean oil tank 16, and the ninth pipeline G9 connecting the clean oil tank 16. A first dilution metering pump 15a is installed on the eighth pipeline G8, and a second dilution metering pump 15b and a second precision filter 9b are sequentially arranged on the ninth pipeline G9 along the direction from the clean oil tank 16 to the mixer 13.

[0067] When the contamination level of the diesel-ash mixture exceeds the limit error range of the particle counter 14, the first dilution metering pump 15a and the second dilution metering pump 15b are turned on. Clean diesel oil in the clean oil tank 16 is injected into the mixer 13 through the eighth pipeline G8 and the second precision filter 9b. The mixer 13 dilutes the sampled small amount of diesel-ash mixture to meet the detection range of the online particle counter 14. The particle counter 14 monitors the cleanliness of the diluted diesel-ash mixture in real time.

[0068] The excess diesel-ash mixture diluted in mixer 13 is returned to the clean oil tank 16 via the ninth pipeline G9. The second precision filter 9b is used to clean the diesel entering mixer 13 from clean oil tank 16 to ensure dilution accuracy.

[0069] According to an embodiment of the present invention, a water filling system S is used to fill water into a test system Y. Specifically, the water filling system S includes a water tank 21, which is connected to the mixing tank 1 of the test system Y via a pipeline. Further, the water tank 21 is connected to a third pipeline G3, thereby connecting to the mixing tank 1 of the test system Y.

[0070] A first solenoid valve 20a, a second flow meter 18b, a second throttle valve 19b, and a nozzle device 32 are sequentially arranged on the pipeline connecting the water tank 21 to the mixing tank 1 of the test system Y. Water from the water tank 21 is injected into the third pipeline G3 via the first solenoid valve 20a, the second flow meter 18b, the second throttle valve 19b, and the nozzle device 32, thereby being injected into the mixing tank 1 of the test system Y. The second flow meter 18b is used to monitor the amount of water injected into the mixing tank 1 of the test system Y, and the flow rate of the injected water is adjusted by the second throttle valve 19b.

[0071] According to an embodiment of the present invention, a sulfur injection system L is used to inject sulfides into a test system Y. Specifically, the sulfur injection system L includes a sulfur injection tank 22, which is connected to the mixing tank 1 of the test system Y via a pipeline.

[0072] A second solenoid valve 20b, a third flow meter 18c, and a third throttle valve 19c are sequentially arranged on the pipeline connecting the sulfur tank 22 to the mixing tank 1 of the test system Y. The sulfide from the sulfur tank 22 is injected into the mixing tank 1 of the test system Y via the second solenoid valve 20b, the third flow meter 18c, and the third throttle valve 19c. The third flow meter 18c monitors the flow rate of the sulfide injected into the mixing tank 1 of the test system Y, and the third throttle valve 19c regulates the flow rate of the injected sulfide.

[0073] According to an embodiment of the present invention, an ash filling system H is used to fill ash powder into a test system Y. Specifically, the ash filling system H includes at least one ash filling tank, and in the embodiment, two ash filling tanks are arranged side by side, namely a first ash filling tank 23a and a second ash filling tank 23b.

[0074] The first ash-adding tank 23a is connected to the mixing tank 1 of the test system Y via a pipeline, and the second ash-adding tank 23b is connected to the mixing tank 1 of the test system Y via a pipeline. A first metering pump 25a is installed on the pipeline connecting the first ash-adding tank 23a to the mixing tank 1 of the test system Y, and a first ash-adding stirring device 24a is installed inside the first ash-adding tank 23a. A second metering pump 25b is installed on the pipeline connecting the second ash-adding tank 23b to the mixing tank 1 of the test system Y, and a second ash-adding stirring device 24b is installed inside the second ash-adding tank 23b.

[0075] The ash powder in the first ash tank 23a and the second ash tank 23b is stirred by the first ash stirring device 24a and the second ash stirring device 24b. The flow rate of ash powder added to the mixing tank 1 of the test system Y is adjusted by controlling the rotation speed of the first metering pump 25a and the second metering pump 25b.

[0076] According to an embodiment of the present invention, an auxiliary system F is used to provide injection pressure to the water injection system S and / or the sulfur injection system L.

[0077] Specifically, the auxiliary system F includes an air source 26, an air source switch 27, a pressure regulating filter 28, a pressure switch 29, a two-position three-port valve 30, a first pressure regulating valve 31a, and a second pressure regulating valve 31b.

[0078] Gas source 26 is connected in sequence to gas source switch 27, pressure regulating filter 28, pressure switch 29 and two-position three-port valve 30. Two-position three-port valve 30 is connected to first pressure regulating valve 31a and second pressure regulating valve 31b respectively. First pressure regulating valve 31a is connected to water tank 21 and second pressure regulating valve 31b is connected to sulfur tank 22.

[0079] Compressed air from air source 26 is introduced into auxiliary system F via air source switch 27. After being reduced and purified by pressure regulating filter 28, the compressed air is injected into first pressure regulating valve 31a and / or second pressure regulating valve 31b by pressure switch 29 and two-position three-port valve 30.

[0080] Compressed air is introduced into the first pressure regulating valve 31a and / or the second pressure regulating valve 31b by switching the two-position three-port valve 30. When adding water, compressed air is introduced into the first pressure regulating valve 31a by switching the two-position three-port valve 30, thereby introducing compressed air into the water tank 21 to provide filling pressure; when adding sulfides, compressed air is introduced into the second pressure regulating valve 31b by switching the two-position three-port valve 30, thereby introducing compressed air into the sulfur tank 22 to provide filling pressure.

[0081] When it is necessary to add medium to water tank 21 and sulfur tank 22, switch the two-position three-way valve to release pressure. When the system pressure is too low and the equipment cannot work normally, pressure switch 29 sends an alarm to indicate low gas source pressure.

[0082] According to an embodiment of the present invention, a diesel-water-ash-sulfur mixing method for diesel engine performance testing is provided. By using the diesel-water-ash-sulfur mixing system provided by the present invention for diesel engine performance testing, diesel, water, ash, and sulfur are mixed to achieve adaptability testing of diesel engines for different oil products (diesel with different pollution levels).

[0083] According to an embodiment of the present invention, a method for mixing diesel fuel, water, ash, and sulfur for diesel engine performance testing includes the following steps:

[0084] Step S1: Diesel refueling system D refuels diesel into test system Y.

[0085] Before diesel fuel is added from diesel refueling system D to test system Y:

[0086] Switch the third three-way valve 6c to inject clean diesel fuel from the external diesel tank into the clean fuel tank 16. Switch the third three-way valve 6c and the fourth three-way valve 6d to form a circulation loop consisting of the clean fuel tank 16, the third three-way valve 6c, the fifth pipeline G5, and the sixth pipeline G6, to remove water and purify the diesel fuel filling system D. After water removal and purification, switch the third three-way valve 6c to discharge the treated fuel.

[0087] Switch the third three-way valve 6c to inject clean diesel fuel into the clean oil tank 16. Monitor the liquid level in the clean oil tank 16 through the second liquid level gauge 4b ​​to see if it meets the test requirements, until the clean oil tank 16 is filled with clean diesel fuel.

[0088] Switch the third three-way valve 6c and the fourth three-way valve 6d to fully open the fifth pipeline G5. The clean oil pump 17 pumps clean diesel fuel through the third precision filter 9c into the mixing tank 1 of the test system Y. Switch the second three-way valve 6b to form a circulation loop consisting of the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the fourth pipeline G4, and the third pipeline G3, to remove water and purify the test system Y. After water removal and purification, switch the first three-way valve 6a to discharge the treated oil.

[0089] When diesel fuel is being added from diesel fuel filling system D to test system Y:

[0090] Switch the third three-way valve 6c and the fourth three-way valve 6d to make the fifth pipeline G5 fully open. The clean oil pump 17 pumps clean diesel fuel through the third precision filter 9c into the mixing tank 1 of the test system Y. The first level gauge 4a monitors whether the liquid level in the mixing tank 1 meets the test requirements until the mixing tank 1 is filled with clean diesel fuel.

[0091] Step S2: Ash injection system H injects ash powder into test system Y. Test system Y mixes diesel and ash powder to prepare diesel-ash powder mixture.

[0092] Weigh the required test ash powder (e.g., quartz sand) using a precision balance, add it to the first ash-adding and stirring device 24a and the second ash-adding and stirring device 24b, mix it with the test oil, and disperse it by ultrasonic vibration. In one embodiment, 1L of test oil is mixed with the ash powder.

[0093] The first ash-adding stirring device 24a and the second ash-adding stirring device 24b stir the ash powder in the first ash-adding tank 23a and the second ash-adding tank 23b, so that it is evenly distributed with the test oil to form a concentrated pollutant liquid. The speed of the first metering pump 25a and the second metering pump 25b is controlled to adjust the flow rate of ash powder (concentrated pollutant liquid) added to the mixing tank 1 of the test system Y. The mass of ash powder (concentrated pollutant liquid) added = flow rate of ash powder (concentrated pollutant liquid) added × concentration of concentrated pollutant liquid.

[0094] After diesel and ash powder are injected into the mixing tank 1, the stirring device 2 stirs the diesel-ash powder mixture while switching the second three-way valve 6b. The test pump 7 pumps the diesel-ash powder mixture into the circulation loop formed by the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 to circulate and make it evenly distributed, thus preparing the diesel-ash powder mixture.

[0095] Step S3: The monitoring system C monitors the cleanliness of the diesel-ash mixture configured in the test system Y in real time.

[0096] By opening the shut-off valve 12, the diesel-ash mixture is sampled through the third pipeline G3. The pollution level of the diesel-ash mixture is monitored in real time (online) by the particle counter 14. The sampled small amount of diesel-ash mixture is then returned to the clean oil tank 16.

[0097] When the contamination level of the diesel-ash mixture exceeds the limit error range of the particle counter 14, the first dilution metering pump 15a and the second dilution metering pump 15b are turned on. Clean diesel oil in the clean oil tank 16 is injected into the mixer 13 through the eighth pipeline G8 and the second precision filter 9b. The mixer 13 dilutes the sampled small amount of diesel-ash mixture to meet the detection range of the online particle counter 14. The particle counter 14 monitors the cleanliness of the diluted diesel-ash mixture in real time.

[0098] The excess diesel-ash mixture diluted in mixer 13 is returned to the clean oil tank 16 via the ninth pipeline G9.

[0099] It should be noted that, in some embodiments, in addition to the real-time monitoring in step S3, the cleanliness of the diesel-ash mixture configured in the test system Y can also be monitored externally by sampling the configured diesel-ash mixture through a sampling valve 11 set on the second pipeline G2 of the test system Y.

[0100] Step S4: Water injection system S and / or sulfur injection system L inject water and / or sulfides into test system Y. Test system Y mixes diesel, water, ash powder and sulfides to prepare a mixture.

[0101] Distilled water or tap water is added to the water tank 21, and sulfide is added to the sulfur tank 22. In one embodiment, 1L of distilled water or tap water is added to the water tank 21, and 1L of sulfide is added to the sulfur tank 22.

[0102] The auxiliary system F introduces compressed air from the air source 26 through the air source switch 27. After the compressed air is reduced and purified by the pressure regulating filter 28, it is injected into the first pressure regulating valve 31a and / or the second pressure regulating valve 31b by the pressure switch 29 and the two-position three-port valve 30.

[0103] Compressed air is introduced into the first pressure regulating valve 31a and / or the second pressure regulating valve 31b by switching the two-position three-port valve 30. When adding water, compressed air is introduced into the first pressure regulating valve 31a by switching the two-position three-port valve 30, thereby introducing compressed air into the water tank 21 to provide filling pressure. The water in the water tank 21 is injected into the third pipeline G3 through the first switching solenoid valve 20a, the second flow meter 18b, the second throttle valve 19b and the nozzle device 32, thereby being injected into the mixing tank 1 of the test system Y.

[0104] When adding sulfides, the compressed air is introduced into the second pressure regulating valve 31b by switching the two-position three-port valve 30, thereby introducing the compressed air into the sulfide tank 22 to provide the injection pressure. The sulfides in the sulfide tank 22 are injected into the mixing tank 1 of the test system Y through the second switching solenoid valve 20b, the third flow meter 18c and the third throttle valve 19c.

[0105] After diesel, water, ash powder and sulfides are injected into the mixing tank 1, the stirring device 2 stirs the diesel-ash powder mixture while the test pump 7 pumps the mixture into the circulation loop formed by the mixing tank 1, the first three-way valve 6a, the first pipeline G1, the second pipeline G2 and the third pipeline G3 to make it circulate evenly.

[0106] During the preparation of the mixture, samples of the mixture prepared by test system Y are collected, and the water content and sulfur content of the prepared mixture are monitored externally. Specifically, the prepared mixture (a mixture of diesel, water, ash, and sulfur) is collected through sampling valve 11 installed on the second pipeline G2 of test system Y for external monitoring.

[0107] Since there may be errors in the cleanliness (particle size) detection of the mixture after water and sulfides are injected (a mixture of diesel, water, ash and sulfur), the present invention mainly performs external monitoring of the water content and sulfur content of the prepared mixture (a mixture of diesel, water, ash and sulfur) in step S4.

[0108] In the process of preparing the diesel-ash mixture in step S2 and the diesel-water-ash-sulfur mixture in step S4, when oil replenishment is required, the diesel refueling system D pumps clean diesel through the third precision filter 9c into the mixing tank 1 of the test system Y via the clean oil pump 17 to replenish the mixing tank 1.

[0109] After the mixture of diesel, water, ash, and sulfides is prepared, the first external interface 3a and the second external interface 3b are connected to the oil return port and oil inlet of the diesel engine to conduct an oil compatibility test on the diesel engine.

[0110] After the test, switch the first three-way valve 6a and the third three-way valve 6c to drain the oil from the mixing tank 1 and the clean oil tank 16.

[0111] The following points need to be explained:

[0112] (1) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0113] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present invention; that is, these drawings are not drawn to scale. It is understood that when a device such as a layer, film, region, or substrate is referred to as being “above” or “below” another device, the device may be “directly” located “above” or “below” the other device or there may be intermediate devices.

[0114] (3) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0115] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A diesel-water-ash-sulfur mixing system for diesel engine performance testing, characterized in that, The mixing system includes: a test system for mixing diesel fuel and ash powder to prepare a diesel fuel-ash powder mixture, and a system for mixing diesel fuel, water, ash powder and sulfides to prepare a mixture; A monitoring system is used to monitor the cleanliness of the diesel-ash mixture configured in the test system in real time. A diesel fueling system is used to fuel the test system with diesel fuel; a water fueling system is used to fuel the test system with water; an ash fueling system is used to fuel the test system with ash powder; and a sulfur fueling system is used to fuel the test system with sulfides. The diesel refueling system includes a clean fuel tank, a fifth pipeline, and a sixth pipeline; the monitoring system includes a seventh pipeline. The bottom of the clean oil tank is connected to a third three-way valve, which is connected to the fifth pipeline. The fifth pipeline is connected to the test system for adding diesel fuel to the test system. One end of the sixth pipeline is connected to the fifth pipeline via a fourth three-way valve, and the other end of the sixth pipeline is connected to the clean oil tank; The seventh pipeline connects the clean oil tank and the test system, and a particle counter and a shut-off valve are arranged sequentially along the seventh pipeline from the clean oil tank to the test system; The monitoring system also includes an eighth pipeline and a ninth pipeline; A mixer is arranged between the particle counter and the shut-off valve; the eighth pipeline and the ninth pipeline are arranged in parallel, the eighth pipeline connecting the mixer and the clean oil tank, and the ninth pipeline connecting the mixer and the clean oil tank. The eighth pipeline is equipped with a first dilution metering pump, and the ninth pipeline, along the direction from the clean oil tank to the mixer, is equipped with a second dilution metering pump and a second precision filter in sequence.

2. The hybrid system according to claim 1, characterized in that, The test system includes a mixing tank and a stirring device, wherein the stirring device is installed inside the mixing tank; The bottom of the mixing tank is connected to a first three-way valve, which is connected in sequence to a first pipeline, a second pipeline, and a third pipeline. The third pipeline is connected to the top of the mixing tank, and a sampling valve is installed on the second pipeline.

3. The hybrid system according to claim 2, characterized in that, The test system also includes a fourth pipeline, which is arranged in parallel with the second pipeline. Wherein, one end of the fourth pipeline is connected to the first pipeline through a second three-way valve, and the other end of the fourth pipeline is connected to the third pipeline; The fourth pipeline is sequentially equipped with a separation filter, a first precision filter, and a one-way valve.

4. The hybrid system according to claim 3, characterized in that, A test pump is installed on the first pipeline, and the test pump is located between the first three-way valve and the second three-way valve.

5. The hybrid system according to claim 2, characterized in that, The mixing tank is provided with a first external interface and a second external interface, which are used to connect the return port and the inlet port of the diesel engine.

6. The hybrid system according to claim 1, characterized in that, An oil purification pump and a third precision filter are arranged sequentially between the third three-way valve and the fourth three-way valve.

7. The hybrid system according to claim 1, characterized in that, The mixing system also includes an auxiliary system for providing injection pressure to the water injection system and / or the sulfur injection system.

8. A method for mixing diesel, water, ash, and sulfur for diesel engine performance testing, characterized in that, The method of mixing diesel fuel, water, ash, and sulfur using the mixing system described in any one of claims 1 to 7 includes the following steps: S1. The diesel fueling system adds diesel fuel to the test system; S2. The ash injection system injects ash powder into the test system, and the test system mixes diesel and ash powder to prepare a diesel-ash powder mixture. S3. The monitoring system monitors the cleanliness of the diesel-ash mixture prepared by the test system in real time. S4. A water injection system and / or a sulfur injection system inject water and / or sulfides into the test system, wherein the test system mixes diesel, water, ash powder and sulfides to prepare a mixture. During the preparation of the mixture, the mixture prepared by the test system is collected, and the water content and sulfur content of the prepared mixture are monitored externally.

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