Engine cooling system external gas inlet flow detection method

Abstract

The invention discloses an engine cooling system external gas inlet flow detection method, which comprises the following steps of S1, inverting a gas collection bottle filled with water, immersing the gas collection bottle in a water storage container, and opening a gas collection bottle cover; s2, the front end of a gas guide pipe is connected with a degassing opening of a cooling system, and the tail end of the gas guide pipe is inserted into an inverted gas collection bottle opening; s3, the engine runs, when the engine runs to a preset working condition, the gas guide pipe starts to convey gas into the gas collection bottle, the initial detection time is recorded, and the engine continues to run; s4, when the volume of the gas collected in the gas collection bottle reaches a preset proportion of the volume of the gas collection bottle, taking out the gas guide pipe from a gas collection bottle opening, recording detection termination time, keeping the gas collection bottle in an inverted state in the water storage container, tightening a bottle cap, taking out the gas collection bottle from the water storage container, and measuring the volume of the collected gas; and S5, according to the gas volume and the detection time, the external gas inlet flow of the cooling system is calculated. The device has the advantages of conveniently and accurately quantifying the entering flow of external gas and the like.

Description

Technical Field

[0001] This invention relates to the field of engine cooling system technology, and in particular to a method for detecting the flow rate of external gas entering an engine cooling system. Background Technology

[0002] Currently, even a trace amount of gas entering the engine cooling system can cause malfunctions, potentially leading to engine overheating or cylinder scoring. Precise control of gas entry into the cooling system is crucial to ensuring normal engine operation and quality control. However, the amount of gas entering the cooling system is typically very small and cannot be measured by existing flow meters; furthermore, the presence of coolant further complicates detection.

[0003] The above background information is provided only to aid in understanding the concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0004] The main objective of this invention is to propose a method for detecting the flow rate of external gas entering an engine cooling system, which can conveniently and accurately quantify the flow rate of external gas entering the system.

[0005] Therefore, this invention proposes a method for detecting the flow rate of external gas entering an engine cooling system.

[0006] Preferably, the present invention may also have the following technical features:

[0007] A method for detecting the flow rate of external gas entering an engine cooling system includes the following steps:

[0008] S1. Invert the gas collecting bottle filled with water and immerse it in the water storage container. Open the gas collecting bottle cap and check to confirm that the water storage container is full of clean water in the gas collecting bottle.

[0009] S2. Connect the front end of the air guide tube to the vent at the highest point of the engine cooling system, and insert the end into the inverted air collection bottle opening.

[0010] S3. Run the engine. When the engine reaches the preset operating condition, control the air pipe to start delivering gas into the gas collection bottle, record the initial detection time, and continue running the engine.

[0011] S4. When the gas volume collected in the gas collecting bottle reaches a predetermined proportion of its volume, quickly remove the end of the gas guide tube from the gas collecting bottle opening, record the detection termination time, and keep the gas collecting bottle in an inverted state in the water storage container and tighten the bottle cap before removing it from the water storage container and measuring the collected gas volume.

[0012] S5. Calculate the external gas inflow rate into the engine cooling system based on the gas volume and detection time. Specifically, calculate the detection time based on the detection start time and detection end time.

[0013] Furthermore, in step S1, the volume of the gas collecting bottle is determined based on the gas volume of the engine cooling system.

[0014] Furthermore, when the body of the gas collecting bottle is circular, its height is 2 to 5 times its diameter.

[0015] Furthermore, in step S2, the front end of the air guide tube is a flexible tube, and the end end is a flexible tube or a rigid tube.

[0016] Furthermore, in step S3, the engine's preset operating condition indicates that the cooling system outlet water temperature reaches 95°C and the outlet water pressure reaches the preset pressure and stabilizes, so that the cooling system reaches a relatively stable working state.

[0017] Furthermore, in step S4, when the gas volume in the gas collecting bottle reaches 50-90%, the predetermined ratio is achieved.

[0018] Furthermore, when the gas volume in the gas collecting bottle reaches 50-60%, the predetermined ratio is achieved.

[0019] Furthermore, in step S5, after removing the gas collecting bottle, it is placed in a 25°C environment to cool for 2 hours, and then the gas volume in the gas collecting bottle is measured.

[0020] Furthermore, the air outlet is provided with an overflow pipe, and the front end of the air guide pipe is connected to the overflow pipe.

[0021] Furthermore, the inner diameter of the overflow pipe is the same as the inner diameter of the air guide pipe.

[0022] The beneficial effects of this invention compared to existing technologies include: introducing gas from the engine cooling system into water for liquid-gas separation, and collecting the gas in a bottle using buoyancy. After a period of accumulation, the gas flow rate is calculated based on the amount of gas collected and the collection time. During collection, the gas collecting bottle is always submerged below the liquid surface of the water storage container, forming a water seal. Bubbles released from the end of the gas guide tube rise in the water inside the bottle and accumulate at the top, simultaneously displacing the water inside the bottle through the bottle opening into the external water storage container. Attached Figure Description

[0023] Figure 1 This is a flowchart of the method of the present invention.

[0024] Figure 2 This is a structural diagram of the apparatus for implementing the method of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope or application of the present invention.

[0026] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0027] like Figure 1-2 The method for detecting the inlet flow rate of an engine cooling system includes the following steps:

[0028] S1. Invert the gas collecting bottle 4 filled with water into the water storage container 3, open the gas collecting bottle cap 42, and check to confirm that the water storage container 3 is filled with clean water to the gas collecting bottle 4; preferably, use a bracket to fix the gas collecting bottle 4 in the water storage container.

[0029] In step S1, the size and height of the water storage container 3 are appropriate, with its height being 1 to 2 times the height of the gas collecting bottle 4, sufficient to accommodate the gas collecting bottle 4 and accommodate the gas guide pipe 2. The water storage container 3 contains an appropriate amount of clean water, with its liquid level greater than the height of the gas collecting bottle 4, so that the gas collecting bottle 4 is completely submerged below the liquid surface of the water storage container 3, or part of the gas collecting bottle 4 protrudes above the liquid surface of the water storage container 3.

[0030] During testing, the gas collecting bottle 4 is used to store the gas discharged from the cooling system 1. The gas collecting bottle cap 42 fits into the gas collecting bottle opening 41, and after tightening, it provides a good seal. Before testing, the gas collecting bottle 4 is filled with water, inverted in the water of the water storage container 3, and the gas collecting bottle cap 42 is opened. Under ambient pressure, the water in the gas collecting bottle 4 will not flow out. A transparent gas collecting bottle 4 is chosen to facilitate observation of the gas volume inside. Preferably, the volume of the gas collecting bottle 4 is determined according to the gas volume of the engine cooling system 1. For example, the volume of the gas collecting bottle 4 is approximately 50% of the gas volume after one hour of engine operation. Optionally, the volume of the gas collecting bottle 4 is 200 ml to 2000 ml; the gas collecting bottle 4 is a round bottle or a square bottle; when the body of the gas collecting bottle 4 is round, its height is 2 to 5 times its diameter.

[0031] S2. Connect the front end of the air duct 2 to the vent of the engine cooling system 1, and insert the end into the inverted gas collecting bottle opening 41. Since the gas in the cooling system 1 is concentrated at its highest point, the vent is located at the highest point of the cooling system to facilitate the discharge of gas accumulated at the highest point of the cooling system 1. An overflow pipe 12 is installed at the vent to connect to the air duct. Preferably, the inner diameter of the overflow pipe is the same as the inner diameter of the air duct. The inner diameter of the air duct 2 is 3-5 mm, and the length of the air duct 2 is less than 2 m. After the gas collecting bottle 4 is installed, its highest point is lower than the height of the overflow pipe 12.

[0032] In step S2, the gas guide tube 2 is used to guide the gas discharged from the cooling system 1 into the collection bottle 4. The tube wall of the gas guide tube 2 should be undamaged and well-sealed, with an appropriate length, and the entire tube should be smoothly routed without kinks. Preferably, the front end of the gas guide tube 2 is a flexible tube, and the end is a flexible tube or a rigid tube. The front end of the gas guide tube 2 is connected to the overflow pipe 12, ensuring a good connection seal; the outer diameter of the end of the gas guide tube 2 is smaller than the gas collection bottle opening 41, and it is inserted into the inverted gas collection bottle opening 41 from bottom to top. A gas guide tube 2 of appropriate length, diameter, and material is selected, and the end of the gas guide tube 2 is smoothly arranged in the water storage container 3, and it is tested to be easily inserted into and easily removed from the gas collection bottle opening 41.

[0033] S3. Run the engine. When the engine reaches the preset operating condition, control the air pipe 2 to start delivering gas into the gas collection bottle 4, record the initial detection time, and continue running the engine.

[0034] The gas in cooling system 1 is guided into gas collecting bottle 4 through overflow pipe 12 and gas guide pipe 2. The liquid that comes out with the gas dissolves in the water in water storage container 3, thus separating it from the gas. At the same time, since gas is lighter than water, the gas entering gas collecting bottle 4 automatically rises to the top of gas collecting bottle 4 (i.e., the bottom of gas collecting bottle 4), and all the gas is collected in gas collecting bottle 4. The gas forces the water in gas collecting bottle 4 out of the bottle.

[0035] The engine's preset operating condition indicates that the outlet water temperature of the cooling system 1 reaches 95℃, and the outlet water pressure reaches and stabilizes at the opening pressure of the water tank cap 11, allowing the cooling system 1 to reach a relatively stable working state, which is conducive to the stable and continuous collection of gas. A water tank is provided at the top of the engine cooling system 1 for circulating the solution in the cooling system 1. Preferably, after the engine starts, the end of the vent pipe 2 is first closed to prevent the gas from the cooling system 1 from being discharged from the vent pipe 2, so that the pressure of the cooling system 1 can rise steadily. When the pressure of the cooling system 1 reaches the opening pressure of the water tank cap 11 and remains stable, the vent pipe 2 is opened to allow the vent pipe 2 to discharge gas normally, and the end of the vent pipe 2 is quickly inserted into the gas collection bottle 4.

[0036] S4. When the gas volume collected in the gas collecting bottle 4 reaches a predetermined proportion of its capacity, quickly remove the end of the gas delivery tube 2 from the gas collecting bottle opening 41, record the detection termination time, keep the gas collecting bottle in an inverted state in the water storage container 3 and tighten the bottle cap 11, then remove it from the water storage container 3 and measure the collected gas volume. Quickly completing the operations of removing the gas delivery tube 2 and tightening the bottle cap 11 can improve measurement accuracy and reduce errors.

[0037] In step S4, when the gas volume in the gas collecting bottle 4 reaches 50-90%, the predetermined ratio is achieved.

[0038] S5. Calculate the external gas inflow rate into engine cooling system 1 based on the gas volume and detection time. Specifically, calculate the detection time based on the detection start time and detection end time.

[0039] In step S5, after removing the gas collecting bottle 4, it is placed in a 25°C environment to cool for 2 hours, and then the gas volume in the gas collecting bottle 4 is measured.

[0040] In the above, ensuring the airtightness of each management and system before measurement improves the accuracy of the test.

[0041] The principle of this invention is as follows: Since the gas in cooling system 1 is concentrated at its highest point, it is guided to the gas collecting bottle opening 41 via overflow pipe 12 and gas guide pipe 2. The liquid following the gas dissolves in the water and separates from the gas. Because gas is lighter than water, it automatically rises to the top of gas collecting bottle 4 after entering, and is completely collected back into the collection bottle 4, squeezing the water out of the bottle. The detection time is determined by observing the amount of gas in the transparent gas collecting bottle 4. When the gas collection is finished, the gas collecting bottle 4 is kept in an inverted position, the collection bottle cap 42 is tightened, and then the gas collecting bottle 4 is removed from the water. The amount of gas in the gas collecting bottle 4 is then measured again. Based on the detection time and the amount of gas in the gas collecting bottle 4, the flow rate of external gas entering cooling system 1 can be accurately calculated.

[0042] Combination Figure 2 The apparatus for detecting the flow rate of external gas entering the engine cooling system as described above includes an engine cooling system 1, a water storage container 3, a water guide pipe 2, an overflow pipe 12, and a gas collecting bottle 4. The water storage container 3 has an internal support, and the gas collecting bottle 4 is placed upside down on the support, submerged below the water level in the water storage container 3. The cooling system 1 is a conventional engine cooling system 1, which includes a cooling circulation loop, a water pump, and a water tank. A vent is located at a high point in the water tank (e.g., the highest point below the water tank cap 11), and the vent is equipped with an overflow pipe 12. The front end of the water guide pipe 2 is connected to the overflow pipe 12, and its end extends into the gas collecting bottle 4.

[0043] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0044] Although exemplary embodiments of the invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the invention without departing from the central concepts of the invention described herein. Therefore, the invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the invention.

Claims

1. A method for detecting the flow rate of external gas entering an engine cooling system, characterized in that: Includes the following steps: S1. Invert the gas collecting bottle filled with water into the water storage container, open the gas collecting bottle cap, and check to confirm that the water storage container is full of clean water in the gas collecting bottle. S2. Connect the front end of the air guide tube to the vent at the highest point of the engine cooling system, and insert the end into the inverted air collection bottle opening. S3. Run the engine. When the engine reaches the preset operating condition, control the air pipe to start delivering gas into the gas collection bottle, record the initial detection time, and continue running the engine. S4. When the gas volume collected in the gas collecting bottle reaches a predetermined proportion of its volume, quickly remove the end of the gas guide tube from the gas collecting bottle opening, record the detection termination time, and keep the gas collecting bottle in an inverted state in the water storage container and tighten the bottle cap before removing it from the water storage container and measuring the collected gas volume. S5. Calculate the external gas flow rate into the engine cooling system based on the gas volume and detection time.

2. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: In step S1, the volume of the gas collecting bottle is determined based on the gas volume of the engine cooling system.

3. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: When the body of the gas collecting bottle is circular, its height is 2 to 5 times its diameter.

4. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: In step S2, the front end of the air guide tube is a flexible tube, and the end end is a flexible tube or a rigid tube.

5. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: In step S3, the engine's preset operating condition indicates that the cooling system outlet water temperature reaches 95°C and the outlet water pressure reaches the preset pressure and stabilizes, so that the cooling system reaches a relatively stable working state.

6. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: In step S4, when the gas volume in the gas collecting bottle reaches 50-90%, the predetermined ratio is achieved.

7. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 6, characterized in that: When the gas volume in the gas collecting bottle reaches 50-60%, the predetermined ratio is achieved.

8. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: In step S5, after removing the gas collecting bottle, place it in a 25°C environment to cool for 2 hours, and then measure the gas volume in the gas collecting bottle.

9. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 1, characterized in that: The air outlet is equipped with an overflow pipe, and the front end of the air guide pipe is connected to the overflow pipe.

10. The method for detecting the flow rate of external gas entering the engine cooling system as described in claim 9, characterized in that: The inner diameter of the overflow pipe is the same as the inner diameter of the air guide pipe.

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