A diagnostic tool for detecting diesel engine oil cooler failure

Abstract

The utility model relates to diesel engine technical field especially a detection tool for detecting diesel engine oil cooler fault, including upper cover and lower cover, upper cover and lower cover fixed setting respectively in the upper, lower both sides of cooler, the upper cover is provided with constant pressure valve, constant pressure valve is linked together through cooling pipe with cooler, still be provided with a plurality of observation port and oil channel plug in the upper cover, the position of observation port and the position of cooling liquid passage of cooler coincide, the oil channel plug passes through the upper cover and blocks up the oil channel mouth of cooler, has solved the problem that the present stage detection scheme exists and detects long, needs to destroy heat exchanger, cannot quickly investigate the problem of trouble.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine technology, and in particular to a detection tool for detecting faults in diesel engine oil coolers. Background Technology

[0002] During diesel engine operation, engine oil and coolant may sometimes mix. When this occurs, it's necessary to investigate the cause of the engine malfunction, with the heat exchanger in the oil cooler being a key area of ​​focus. Quickly detecting perforations in the heat exchanger can significantly improve the repair process after oil and coolant mixing. Existing detection methods are time-consuming and require damaging the heat exchanger. A tool for detecting perforations in diesel engine heat exchangers, based on the working principle of the heat exchanger, offers significant improvements in both efficiency and accuracy without damaging the heat exchanger.

[0003] In summary, a detection tool for diesel engine oil cooler failures is proposed to address the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a detection tool for diesel engine oil cooler faults to solve the problems of current detection methods, such as long detection cycles, the need to damage the heat exchanger, and the inability to quickly diagnose faults.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A testing tool for detecting faults in a diesel engine oil cooler includes an upper cover and a lower cover, which are fixedly installed on the upper and lower sides of the cooler, respectively. A constant pressure valve is installed on the upper cover, which is connected to the cooler through a cooling pipe. The upper cover also has several observation ports and oil passage plugs. The positions of the observation ports coincide with the positions of the coolant passages of the cooler. The oil passage plugs pass through the upper cover and block the oil passage openings of the cooler.

[0006] Furthermore, rubber sealing gaskets are provided between the upper cover plate and the lower cover plate and the cooler.

[0007] Furthermore, there are two observation ports, located corresponding to the coolant channels of the cooler.

[0008] Further, it also includes a liquid level gauge, which is inserted into the coolant channel of the cooler through the observation port.

[0009] Furthermore, the upper cover plate and the lower cover plate are connected by bolts and screws.

[0010] Further specifying, the upper cover plate is provided with a vent and pressurization port, one end of the cooling pipe passes through the vent and pressurization port and is connected to the oil passage of the cooler, and the other end is connected to the constant pressure valve.

[0011] The advantages of this utility model over the current technology are as follows: Pressurized air enters the pressurization port of the upper cover through the constant pressure valve and then enters the oil passage of the heat exchanger. The presence of air bubbles in the water through the observation port indicates whether there is a perforation in the heat exchanger of the oil cooler. If air bubbles emerge from the water in the observation port, there is a perforation; if no air bubbles emerge, there is no perforation. The water level in the observation port is controlled by a level gauge, which allows for precise identification of which layer of the heat exchanger in the oil cooler has a perforation, facilitating subsequent maintenance. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0013] The markings in the diagram correspond to: 1-upper cover plate, 2-lower cover plate, 3-cooler, 4-constant pressure valve, 5-constant pressure valve bolt, 6-observation port, 7-liquid level gauge, 8-vent and pressurization port, 9-cooling pipe, and 10-oil passage plug. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments. Example

[0015] like Figure 1 and Figure 2As shown, a testing tool for detecting faults in a diesel engine oil cooler includes an upper cover plate 1 and a lower cover plate 2. The upper cover plate 1 and the lower cover plate 2 are respectively fixedly installed on the upper and lower sides of the cooler 3. Rubber sealing gaskets are provided between the upper cover plate 1 and the lower cover plate 2 and the cooler 3. The upper cover plate 1 and the lower cover plate 2 are connected by bolts and screws. A constant pressure valve 4 and an oil passage plug 10 are provided on the upper cover plate 1. The oil passage plug 10 passes through the upper cover plate 1 and blocks the oil passage opening of the cooler 3. The constant pressure valve 4 is installed on the upper cover plate 1 by a mounting bracket and a constant pressure valve bolt 5. The top surface of the upper cover plate 1 is also provided with two observation ports 6 and a vent and pressurization port 8. It also includes a cooling pipe 9, one end of which passes through the vent and pressurization port 8. The air pressurization port 8 is connected to the oil passage of the cooler 3, and the other end is connected to the constant pressure valve 4. Both observation ports 6 are through holes, and the positions of the two observation ports 6 coincide with the positions of the coolant passages of the cooler 3. The observation port 4 is convenient for observing whether there are air bubbles in the water to determine whether there is a perforation in the heat exchanger in the oil cooler 3. If air bubbles emerge from the water, there is a perforation; if no air bubbles emerge, there is no perforation. A liquid level gauge 7 is also installed in the observation port. The liquid level gauge 7 is inserted into the coolant passage of the cooler 3 through the observation port 6. The liquid level gauge 7 controls the liquid level of the water injected into the observation port, which can accurately locate which layer of the heat exchanger in the cooler 3 has a perforation, providing convenience for subsequent maintenance.

[0016] During use, clean the oil cooler 3 to be tested. Place two oil-resistant rubber sealing gaskets on the upper and lower end faces of the cooler 3 respectively. Then, align the upper cover plate 1 and the lower cover plate 2 and cover the upper and lower sides of the cooler 3 respectively. Connect and secure the upper cover plate 1 and the lower cover plate 2 with four high-strength bolts and matching nuts. When tightening, use a diagonal alternating tightening method to ensure uniform sealing pressure and prevent leakage due to uneven force. Inject clean water into the coolant passage of the cooler 3 through the two observation ports 6. Pressurized air enters the oil passage through the vent and pressurization port 8 of the upper cover plate 1 through the constant pressure valve 4. Check for air bubbles in the water through the observation ports 6 to determine if there is a perforation. If air bubbles emerge from the water in the observation port 6, there is a perforation; if no air bubbles emerge, there is no perforation.

[0017] Insert the level gauge 7 into the coolant channel through the observation port 6. By observing the scale on the level gauge 7, locate the specific layer of the heat exchanger in the oil cooler where the perforation has occurred, thus facilitating subsequent maintenance.

[0018] Because this invention features two independent observation ports 6, supplemented by a level gauge 7 for precise liquid level control, it enables more accurate fault location. For example, by controlling the liquid level in different coolant channels and observing which observation port shows air bubbles, the approximate area where the perforation occurred can be preliminarily determined. Through phased and regional testing, the fault location can be further narrowed down, providing extremely precise location information for subsequent repairs, avoiding blind repairs or the scrapping of the entire assembly, and significantly saving repair costs.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The above provides a detailed description of a testing tool for detecting faults in diesel engine oil coolers provided by this utility model. The specific embodiments are only used to help understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the scope of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A testing tool for detecting faults in diesel engine oil coolers, characterized in that: The device includes an upper cover plate (1) and a lower cover plate (2), which are fixedly installed on the upper and lower sides of the cooler (3), respectively. A constant pressure valve (4) is installed on the upper cover plate (1), which is connected to the cooler (3) through a cooling pipe (9). The upper cover plate (1) is also provided with several observation ports (6) and oil passage plugs (10). The position of the observation port (6) coincides with the position of the coolant passage of the cooler (3). The oil passage plugs (10) pass through the upper cover plate (1) and block the oil passage of the cooler (3).

2. The testing tool for detecting faults in diesel engine oil coolers according to claim 1, characterized in that: A rubber sealing gasket is provided between the upper cover plate (1) and the lower cover plate (2) and the cooler (3).

3. The testing tool for detecting faults in diesel engine oil coolers according to claim 1, characterized in that: The observation port (6) is provided in two places, which are respectively located in the coolant channel of the cooler (3).

4. A testing tool for detecting faults in diesel engine oil coolers according to claim 3, characterized in that: It also includes a liquid level gauge (7), which is inserted into the coolant channel of the cooler (3) through the observation port (6).

5. A testing tool for detecting faults in diesel engine oil coolers according to claim 1, characterized in that: The upper cover plate (1) and the lower cover plate (2) are connected by bolts and screws.

6. A testing tool for detecting faults in diesel engine oil coolers according to claim 1, characterized in that: The upper cover plate (1) is provided with a vent and pressurization port (8). One end of the cooling pipe (9) passes through the vent and pressurization port (8) and is connected to the oil passage of the cooler (3). The other end is connected to the constant pressure valve (4).

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