Engine device, method for detecting breakage of cooling pipe thereof, and vehicle

Abstract

The application relates to the technical field of engines, and discloses an engine device, a cooling pipe rupture detection method thereof and a vehicle. The method comprises the following steps: judging whether the water temperature in the cooling pipe exceeds a first preset temperature value; judging whether the rising temperature of the water temperature in the cooling pipe within a first preset time exceeds a preset rising temperature value according to the water temperature in the cooling pipe exceeding the first preset temperature value; judging whether the engine device is operated under a high-load working condition according to the rising temperature of the water temperature in the cooling pipe within the first preset time exceeding the preset rising temperature value; judging whether the temperature of a preset position of an exhaust system in the engine device within a second preset time and within a preset continuous period continuously exceeds a second preset temperature value according to the engine device not being operated under the high-load working condition; and judging the cooling pipe rupture according to the temperature of the preset position of the exhaust system in the engine device within the second preset time and within the preset continuous period continuously exceeding the second preset temperature value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine, in particular to an engine device and a cooling pipe breakage detection method thereof and a vehicle. BACKGROUND

[0002] The engine is a core component in the vehicle, which is used to provide power for the whole vehicle. Since the engine generates a large amount of heat during operation, the cooling pipe is usually equipped to circulate cooling liquid to cool the engine.

[0003] If the cooling pipe is broken, the engine may be overheated, which may cause the engine performance to decline, thereby reducing the power output and increasing the fuel consumption. In addition, long-term or severe overheating may cause deformation, cracking or other damage of the internal parts of the engine. In extreme cases, the overheating of the engine may even cause the engine to catch fire, which poses a serious safety hazard.

[0004] Therefore, how to accurately determine whether the cooling pipe is broken has become a technical problem to be solved in the field. SUMMARY

[0005] The present application aims to at least solve the technical problem of how to accurately determine whether the cooling pipe is broken. The purpose is achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a cooling pipe breakage detection method for an engine device, comprising: determining whether the water temperature in the cooling pipe exceeds a first preset temperature value; determining whether the rising temperature of the water in the cooling pipe within a first preset time exceeds a preset rising temperature value according to the water temperature in the cooling pipe exceeding the first preset temperature value; determining whether the engine device is running under high load conditions according to the rising temperature of the water in the cooling pipe within the first preset time exceeding the preset rising temperature value; determining whether the temperature of a preset position of an exhaust system in the engine device within a second preset time and within a preset duration exceeds a second preset temperature value according to the engine device not running under high load conditions; and determining that the cooling pipe is broken according to the temperature of the preset position of the exhaust system in the engine device within the second preset time and within the preset duration continuously exceeding the second preset temperature value.

[0007] The engine device cooling pipe rupture detection method, in operation, first judges whether the water temperature in the cooling pipe exceeds a first preset temperature value; if the water temperature in the cooling pipe exceeds the first preset temperature value, it indicates that the water temperature in the cooling pipe is relatively high at this time, which may be caused by the rupture of the cooling pipe; in order to further improve the judgment accuracy, it is continued to judge whether the rising temperature of the water temperature in the cooling pipe within a first preset time exceeds a preset rising temperature value; if the rising temperature of the water temperature in the cooling pipe within the first preset time exceeds the preset rising temperature value, it indicates that the cooling liquid may continuously leak due to the rupture of the cooling pipe, that is, the possibility of the rupture of the cooling pipe is strengthened, and it is continued to judge whether the engine device is operated under a high load condition; if it is judged that the engine device is not operated under the high load condition, it indicates that the water temperature in the cooling pipe exceeding the first preset temperature value is not caused by the high load operation of the engine device, which further strengthens the possibility of the rupture of the cooling pipe; in order to finally more accurately judge that the rising temperature of the water temperature in the cooling pipe within the first preset time exceeding the preset rising temperature value is caused by the rupture of the cooling pipe, it is continued to judge whether the temperature of a preset position of an exhaust system of the engine device within a second preset time and within a preset continuous period continuously exceeds a second preset temperature value; if the temperature of the preset position of the exhaust system of the engine device within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value, the final judgment result is that the cooling pipe is ruptured. Therefore, the engine device cooling pipe rupture detection method can exclude interference items through multiple layers of logical judgment, so as to accurately judge whether the cooling pipe is ruptured.

[0008] In some embodiments of the application, the preset position is an exhaust pipe of the exhaust system, and the exhaust pipe is provided with an exhaust temperature sensor; and the judgment whether the temperature of the preset position of the exhaust system of the engine device within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value comprises: judging whether the detected temperature of the exhaust temperature sensor within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value.

[0009] In some embodiments of the application, the preset position is upstream of an oxidation catalyst of the exhaust system, and upstream of the oxidation catalyst is provided with an aftertreatment temperature sensor; and the judgment whether the temperature of the preset position of the exhaust system of the engine device within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value comprises: judging whether the detected temperature of the aftertreatment temperature sensor within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value.

[0010] In some embodiments of the present application, the preset position is an exhaust gas recirculation valve of the exhaust system, and a cold exhaust temperature sensor is arranged at the exhaust gas recirculation valve; and the step of determining whether the temperature of the preset position of the exhaust system of the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration period comprises: determining whether the temperature detected by the cold exhaust temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration period.

[0011] In some embodiments of the present application, the step of determining whether the water temperature in the cooling pipe exceeds the first preset temperature value comprises: arranging a water temperature sensor in the cooling pipe, and determining whether the temperature detected by the water temperature sensor exceeds the first preset temperature value.

[0012] In some embodiments of the present application, the step of determining whether the engine device is operating under a high load condition comprises: determining that the engine device is not operating under a high load condition according to the ratio of the actual power of the engine body to the rated power of the engine body being less than a preset ratio.

[0013] In some embodiments of the present application, the method for detecting a broken cooling pipe of an engine device further comprises: starting an alarm device to issue an alarm according to the determination that the cooling pipe is broken.

[0014] In the second aspect, the present application provides an engine device, which is suitable for any of the above-mentioned methods for detecting a broken cooling pipe of an engine device. The engine device comprises: an engine body; a cooling pipe, which is internally filled with cooling liquid for cooling the engine body, and which is internally provided with a water temperature sensor for detecting the temperature of the cooling liquid in real time; an exhaust system, which comprises an exhaust pipe, an aftertreatment system, and an exhaust gas recirculation system, the exhaust pipe is internally provided with an exhaust temperature sensor for detecting the temperature in the exhaust pipe in real time, the aftertreatment system is provided with an aftertreatment temperature sensor upstream of an oxidation catalyst for detecting the temperature upstream of the oxidation catalyst in real time, and the exhaust gas recirculation system is provided with a cold exhaust temperature sensor at an exhaust gas recirculation valve for detecting the temperature at the exhaust gas recirculation valve in real time; an electronic control unit, which is signal-connected with the water temperature sensor, the exhaust temperature sensor, the aftertreatment temperature sensor, and the cold exhaust temperature sensor; and an alarm device, which is signal-connected with the electronic control unit, and which is configured to issue an alarm according to an alarm signal issued by the electronic control unit.

[0015] In some embodiments of the present application, the alarm device comprises: a warning light, which is configured to flash according to the alarm signal issued by the electronic control unit; and a loudspeaker, which is configured to play a warning sound according to the alarm signal issued by the electronic control unit.

[0016] In the third aspect, the present application provides a vehicle, which comprises a vehicle body and any of the above-mentioned engine devices.

[0017] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application and to implement the same according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals in the attached drawings are intended to represent the same components throughout the several drawings. In the drawings:

[0019] Figure 1 A logic judgment schematic diagram of the engine device cooling pipe rupture detection method provided by the embodiment of the present application is shown in the figure.

[0020] Figure 2 A signal connection relationship schematic diagram between various electrical components in the engine device provided by the embodiment of the present application is shown in the figure.

[0021] The reference numerals are as follows:

[0022] 1000, water temperature sensor;

[0023] 2000, exhaust temperature sensor;

[0024] 3000, aftertreatment temperature sensor;

[0025] 4000, cold after temperature sensor;

[0026] 5000, electronic control unit;

[0027] 6000, alarm device. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0029] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0030] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments.

[0031] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can encompass different orientations of the device in use or operation, depending on the particular context in which it is used. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0032] Figure 1 A logic judgment schematic diagram of the engine device cooling pipe breakage detection method provided by the embodiment of the present application; as shown in the figure, the embodiment of the present application provides an engine device cooling pipe breakage detection method, which comprises: Figure 1 As shown in the figure, the embodiment of the present application provides an engine device cooling pipe breakage detection method, which comprises:

[0033] Step 100: judging whether the water temperature in the cooling pipe exceeds a first preset temperature value;

[0034] Step 200: judging whether the rising temperature of the water in the cooling pipe within a first preset time exceeds a preset rising temperature value according to that the water temperature in the cooling pipe exceeds the first preset temperature value;

[0035] Step 300: judging whether the engine device is running under a high load condition according to that the rising temperature of the water in the cooling pipe within the first preset time exceeds the preset rising temperature value;

[0036] Step 400: judging whether the temperature of a preset position of an exhaust system in the engine device within a second preset time and within a preset duration period continuously exceeds a second preset temperature value according to that the engine device is not running under the high load condition;

[0037] Step 500: judging that the cooling pipe is broken according to that the temperature of the preset position of the exhaust system in the engine device within the second preset time and within the preset duration period continuously exceeds the second preset temperature value.

[0038] In this embodiment, each step of the engine device cooling pipe breakage detection method is described in detail as follows:

[0039] Step 100: firstly judging whether the water temperature in the cooling pipe exceeds the first preset temperature value, so as to preliminarily judge the breakage of the cooling pipe;

[0040] It is easy to understand that if the water temperature in the cooling pipe does not exceed the first preset temperature value, it indicates that the cooling pipe is not broken.

[0041] Step 200: if the water temperature in the cooling pipe exceeds the first preset temperature value, it indicates that the water temperature in the cooling pipe is high at this time, which may be caused by the breakage of the cooling pipe, so as to further improve the judgment accuracy, and continue to judge whether the rising temperature of the water in the cooling pipe within the first preset time exceeds the preset rising temperature value;

[0042] It is easy to understand that if the rising temperature of the water in the cooling pipe within the first preset time does not exceed the preset rising temperature value, it cannot indicate that the cooling pipe is broken, and at this time, the logic judgment should be re-performed in step 100.

[0043] Step 300: if the rising temperature of the water in the cooling pipe within the first preset time exceeds the preset rising temperature value, it indicates that the cooling liquid may continuously leak due to the breakage of the cooling pipe, that is, the possibility of the breakage of the cooling pipe is enhanced, and whether the engine device is running under the high load condition is continued to be judged;

[0044] It is easy to understand that if it is judged that the engine device is running under high load working condition, it is possible that the water temperature in the cooling pipe exceeds the first preset temperature value due to the high load work of the engine device, and it cannot be explained that the cooling pipe is broken, so at this time it should also return to step 100 to rejudge.

[0045] Step 400: If it is judged that the engine device is not running under high load working condition, it is not because the water temperature in the cooling pipe exceeds the first preset temperature value due to the high load work of the engine device, which further enhances the possibility of cooling pipe rupture, so as to finally more accurately judge that the rising temperature of the water in the cooling pipe within the first preset time exceeds the preset rising temperature value due to the cooling pipe rupture, continue to judge whether the temperature of the preset position of the exhaust system in the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset continuous period.

[0046] It is easy to understand that if it is judged that the temperature of the preset position of the exhaust system in the engine device does not continuously exceed the second preset temperature value within the second preset time and within the preset continuous period, it also cannot be explained that the cooling pipe is broken, at this time it should return to step 200 for logical judgment.

[0047] Step 500: If the temperature of the preset position of the exhaust system in the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset continuous period, the final judgment result is that the cooling pipe is broken.

[0048] Therefore, this engine device cooling pipe rupture detection method can exclude interference items through multiple layers of logical judgment, so as to accurately judge whether the cooling pipe is broken.

[0049] Among them, in order to facilitate understanding, specific data is used for illustration, the first preset temperature value is set to 85℃, the first preset time is set to 1 minute, and the preset rising temperature value is set to 15℃; that is, steps 100 to 300 can be specifically:

[0050] Step 100: Judge whether the water temperature in the cooling pipe exceeds 85℃;

[0051] Step 200: According to the water temperature in the cooling pipe exceeding 85℃, judge whether the rising temperature of the water in the cooling pipe within 1 minute exceeds 15℃;

[0052] Step 300: According to the rising temperature of the water in the cooling pipe within 1 minute exceeding 15℃, judge whether the engine device is running under high load working condition.

[0053] It is easy to understand that the data of the above-mentioned first preset temperature value, first preset time and preset rising temperature value is only for example, in actual working condition, it should be set according to the working condition demand, and is not limited.

[0054] In step 400, when it is judged that the engine device is not operating under the high load condition, the judgment can be made in three different ways as follows.

[0055] According to an optional embodiment of the present application, in the three different ways, the first way is that the preset position is an exhaust pipe of the exhaust system, and the exhaust pipe is provided with an exhaust temperature sensor; and the judgment of whether the temperature of the preset position of the exhaust system of the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration period includes the judgment of whether the detected temperature of the exhaust temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration period.

[0056] In the present embodiment, for the convenience of understanding, specific data is also used for illustration; the second preset time is set to 15 minutes, the second preset temperature value is set to 650 DEG C, and the preset duration period is set to 30 seconds.

[0057] Therefore, step 400 is specifically the judgment of whether the temperature detected by the exhaust temperature sensor exceeds 650 DEG C and lasts for more than 30 seconds within 15 minutes.

[0058] Step 500 is specifically the judgment of the cooling pipe rupture according to the temperature detected by the exhaust temperature sensor exceeding 650 DEG C and lasting for more than 30 seconds within 15 minutes.

[0059] According to an optional embodiment of the present application, in the three different ways, the second way is that the preset position is upstream of an oxidation catalyst of the exhaust system, and upstream of the oxidation catalyst is provided with an aftertreatment temperature sensor; and the judgment of whether the temperature of the preset position of the exhaust system of the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration period includes the judgment of whether the detected temperature of the aftertreatment temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration period.

[0060] In the present embodiment, for the convenience of understanding, specific data is also used for illustration; the second preset time is set to 15 minutes, the second preset temperature value is set to 550 DEG C, and the preset duration period is set to 10 seconds.

[0061] Therefore, step 400 is specifically the judgment of whether the temperature detected by the aftertreatment temperature sensor exceeds 550 DEG C and lasts for more than 10 seconds within 15 minutes.

[0062] Step 500 is specifically the judgment of the cooling pipe rupture according to the temperature detected by the aftertreatment temperature sensor exceeding 550 DEG C and lasting for more than 10 seconds within 15 minutes.

[0063] According to an optional embodiment of the present application, in the three different manners, the third one is that the preset position is the exhaust gas recirculation valve of the exhaust system, and the cold temperature sensor is arranged at the exhaust gas recirculation valve; and the step of judging whether the temperature of the preset position of the exhaust system of the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration period comprises: judging whether the detected temperature of the cold temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration period.

[0064] In the embodiment, for the convenience of understanding, the specific data is still taken as an example; the second preset time is set to 15 minutes, the second preset temperature value is set to 150 DEG C, and the preset duration period is set to 10 seconds.

[0065] Therefore, the step 400 is: judging whether the temperature detected by the cold temperature sensor exceeds 150 DEG C and lasts for more than 10 seconds within 15 minutes.

[0066] The step 500 is: judging that the cooling pipe is broken according to the temperature detected by the cold temperature sensor exceeding 150 DEG C and lasting for more than 10 seconds within 15 minutes.

[0067] It is easy to understand that, in the three different manners, the data of the second preset time, the second preset temperature value and the preset duration period are only for example, and in the actual working condition, the working condition demand (for example, the types and models of the sensor and the engine body, and the conventional power demand of the whole vehicle) should be set specifically, and is not limited; in addition, the exhaust temperature sensor, the aftertreatment temperature sensor and the cold temperature sensor can be configured to be connected with the signal of the electronic control unit (ECU), and the logical judgment of the above steps is realized through the electronic control unit.

[0068] Therefore, according to the detailed embodiment of the three different manners, the engine device cooling pipe breakage detection method provided by the embodiment of the present application can select a reasonable position in the exhaust system of the engine device to set the corresponding sensor according to different working condition demands, and finally realize the accurate judgment of whether the cooling pipe is broken, so as to improve the application scene; and the exhaust temperature sensor, the aftertreatment temperature sensor, the cold temperature sensor and the electronic control unit are all common components in the engine device, so that the engine device cooling pipe breakage detection method does not need to add additional components in the existing engine device, and only needs to set a reasonable logical judgment mode, so as to realize the accurate judgment of the breakage of the cooling pipe, and save the cost to a certain extent.

[0069] According to an optional embodiment of the present invention, determining whether the water temperature in the cooling pipe exceeds a first preset temperature value includes: setting a water temperature sensor in the cooling pipe, and determining whether the temperature detected by the water temperature sensor exceeds the first preset temperature value.

[0070] In this embodiment, similarly, the water temperature sensor may also be connected to the electronic control unit for signal communication, and the electronic control unit may be used to implement the determination of step 100 above.

[0071] In addition, the water temperature sensor is also a common component in the engine device, and there is no need to add additional components, which saves costs.

[0072] It should be emphasized that the above-mentioned exhaust temperature sensor, after-treatment temperature sensor, cold after-temperature sensor and water temperature sensor are all configured to detect the temperature of the position corresponding to themselves in real time, so as to ensure the timeliness of the engine device cooling pipe rupture detection method, thereby further ensuring that the cooling pipe rupture can be discovered in time.

[0073] According to an optional embodiment of the present invention, determining whether the engine device is operating under a high-load condition includes: determining that the engine device is not operating under a high-load condition based on the ratio of the actual power of the engine body in the engine device to the rated power of the engine body being less than a preset ratio.

[0074] In this embodiment, similarly, the electronic control unit can be used to determine whether the engine device is operating under a high-load condition, and the electronic control unit can be connected to the engine body signal.

[0075] In addition, for ease of understanding, the description will continue with specific data, and the preset ratio will be set to 90%;

[0076] Step 300 specifically includes: determining whether the actual power of the engine body exceeds 90% of the rated power of the engine body according to whether the temperature rise of the water temperature in the cooling pipe exceeds the preset temperature rise value within the first preset time;

[0077] Step 400 is specifically as follows: based on determining that the actual power of the engine body does not exceed 90% of the rated power of the engine body, determine whether the temperature of a preset position of the exhaust system in the engine device continues to exceed a second preset temperature value within a second preset time and within a preset duration.

[0078] It should be noted that the numerical value of the preset ratio in this embodiment is only an example. Under actual working conditions, it should be based on different working conditions (such as the type and model of the engine body, etc.) and is not specifically limited.

[0079] According to an optional embodiment of the present application, the engine device cooling pipe rupture detection method further comprises the step 600 of activating an alarm device to issue an alarm according to the judgment of the cooling pipe rupture.

[0080] In this embodiment, it is easy to understand that when the cooling pipe rupture is judged, the relevant personnel should be informed of the information of the cooling pipe rupture in time to minimize the loss.

[0081] Specifically, the same as the above, the alarm device can be signal connected with the electronic control unit, and when the electronic control unit finally determines the cooling pipe rupture according to the multi-layer logic, the alarm device can be sent an alarm signal, and the alarm device issues an alarm after receiving the alarm signal to warn the relevant personnel.

[0082] Figure 2 The signal connection relationship between the various electrical components in the engine device provided by the embodiment of the present application is shown in the figure; and Figure 1 and Figure 2 The embodiment of the present application further provides an engine device suitable for any of the above engine device cooling pipe rupture detection methods, which comprises: an engine body; a cooling pipe, inside which flows a cooling liquid for cooling the engine body, and inside the cooling pipe is arranged a water temperature sensor 1000 for detecting the temperature of the cooling liquid in real time; an exhaust system comprising an exhaust pipe, an aftertreatment system and an exhaust gas recirculation system, the exhaust pipe is provided with an exhaust temperature sensor 2000 for detecting the temperature in the exhaust pipe in real time, the aftertreatment system is provided with an aftertreatment temperature sensor 3000 for detecting the temperature upstream of the oxidation catalyst in real time, and the exhaust gas recirculation system is provided with a cold exhaust temperature sensor 4000 for detecting the temperature at the exhaust gas recirculation valve in real time; an electronic control unit 5000 signal connected with the water temperature sensor 1000, the exhaust temperature sensor 2000, the aftertreatment temperature sensor 3000 and the cold exhaust temperature sensor 4000; and an alarm device 6000 signal connected with the electronic control unit 5000, the alarm device 6000 being configured to be able to issue an alarm according to the alarm signal sent by the electronic control unit 5000.

[0083] In this embodiment, the process of detecting whether the cooling pipe is ruptured by the engine device will be described in detail as follows:

[0084] Firstly, the electronic control unit 5000 receives the temperature information detected by the water temperature sensor 1000, and judges whether the water temperature in the cooling pipe exceeds the first preset temperature value, if the water temperature in the cooling pipe does not exceed the first preset temperature value, it means that the cooling pipe is not ruptured;

[0085] If the water temperature in the cooling pipe exceeds the first preset temperature value, it indicates that the water temperature in the cooling pipe is relatively high at this time, which may be caused by the rupture of the cooling pipe. To further improve the accuracy of the judgment, the water temperature sensor 1000 continuously detects the water temperature in the cooling pipe, and the electronic control unit 5000 judges whether the rising temperature of the water temperature in the cooling pipe within the first preset time exceeds the preset rising temperature value; if the rising temperature of the water temperature in the cooling pipe within the first preset time does not exceed the preset rising temperature value, it cannot be explained that the cooling pipe is ruptured.

[0086] If the rising temperature of the water temperature in the cooling pipe within the first preset time exceeds the preset rising temperature value, it indicates that it may be caused by the continuous leakage of the cooling liquid due to the rupture of the cooling pipe, i.e. the possibility of the rupture of the cooling pipe is enhanced, and the electronic control unit 5000 continues to judge whether the engine device is running under high load working condition; if it is judged that the engine device is running under high load working condition, it may be caused by the high load working of the engine device, and it cannot be explained that the cooling pipe is ruptured;

[0087] If it is judged that the engine device is not running under high load working condition, it indicates that it is not caused by the high load working of the engine device that the water temperature in the cooling pipe exceeds the first preset temperature value, which further enhances the possibility of the rupture of the cooling pipe. To finally more accurately judge that the rising temperature of the water temperature in the cooling pipe within the first preset time exceeds the preset rising temperature value is caused by the rupture of the cooling pipe, any one of the three temperature information of the exhaust temperature sensor 2000, the aftertreatment temperature sensor 3000 and the cold temperature sensor 4000 received by the electronic control unit 5000 is used to judge whether the temperature of the preset position of the exhaust system within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value; if it is judged that the temperature of the preset position of the exhaust system within the second preset time and within the preset continuous period does not continuously exceed the second preset temperature value, it also cannot be explained that the cooling pipe is ruptured;

[0088] If it is finally judged that the temperature of the preset position of the exhaust system within the second preset time and within the preset continuous period continuously exceeds the second preset temperature value, the final judgment result is that the cooling pipe is ruptured;

[0089] When it is judged that the cooling pipe is ruptured, the electronic control unit 5000 sends an alarm signal to the alarm device 6000, and the alarm device 6000 sends an alarm.

[0090] The engine device can accurately determine whether the cooling pipe is broken, and can accurately determine whether the cooling pipe is broken by setting a reasonable logical determination mode without adding an additional sensor, thereby saving costs to a certain extent; and the alarm device 6000 is arranged to ensure that relevant personnel can learn the cooling pipe breaking in time, thereby enabling subsequent maintenance and replacement work to be carried out in time, and loss can be reduced.

[0091] Specifically, according to an optional embodiment of the present application, the alarm device 6000 comprises: a warning light configured to flash according to the alarm signal sent by the electronic control unit 5000; and a loudspeaker configured to play a warning sound according to the alarm signal sent by the electronic control unit 5000.

[0092] In the embodiment, it is easy to understand that the alarm device 6000 comprises the warning light and the loudspeaker, and the purpose is that when the cooling pipe is broken, the alarm device 6000 can issue an alarm through vision and hearing to remind relevant personnel, thereby effectively guaranteeing the functionality of the alarm device 6000.

[0093] The embodiment of the present application also provides a vehicle, which comprises a vehicle body and any one of the above engine devices.

[0094] In the embodiment, the vehicle has the same beneficial effects as the above any one of the engine devices, and specific reference can be made to the above analysis, which will not be described here.

[0095] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An engine device cooling pipe breakage detection method characterized by, The method comprises: determining whether the water temperature in the cooling pipe exceeds a first preset temperature value; determining whether the water temperature in the cooling pipe rises by more than a preset temperature rise value within a first preset time according to the water temperature in the cooling pipe exceeding the first preset temperature value; determining whether the engine device is operating under a high load condition according to the water temperature in the cooling pipe rising by more than the preset temperature rise value within the first preset time; determining whether the temperature at a preset position of an exhaust system in the engine device continuously exceeds a second preset temperature value within a second preset time and within a preset duration according to the engine device not operating under the high load condition; determining that the cooling pipe is broken according to the temperature at the preset position of the exhaust system in the engine device continuously exceeding the second preset temperature value within the second preset time and within the preset duration.

2. The engine apparatus cooling pipe breakage detection method according to claim 1, characterized by, The preset position is an exhaust pipe of the exhaust system, and a temperature sensor is arranged in the exhaust pipe; the determination of whether the temperature at the preset position of the exhaust system in the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration comprises: determining whether the temperature detected by the temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration.

3. The engine apparatus cooling pipe breakage detection method according to claim 1, characterized by, The preset position is upstream of an oxidation catalyst of the exhaust system, and an aftertreatment temperature sensor is arranged upstream of the oxidation catalyst; the determination of whether the temperature at the preset position of the exhaust system in the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration comprises: determining whether the temperature detected by the aftertreatment temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration.

4. The engine apparatus cooling pipe breakage detection method according to claim 1, characterized by, The preset position is an exhaust gas recirculation valve of the exhaust system, and a cold after temperature sensor is arranged at the exhaust gas recirculation valve; the determination of whether the temperature at the preset position of the exhaust system in the engine device continuously exceeds the second preset temperature value within the second preset time and within the preset duration comprises: determining whether the temperature detected by the cold after temperature sensor continuously exceeds the second preset temperature value within the second preset time and within the preset duration.

5. The engine apparatus cooling pipe breakage detection method according to claim 1, characterized by, The determination of whether the water temperature in the cooling pipe exceeds the first preset temperature value comprises: arranging a water temperature sensor in the cooling pipe, and determining whether the temperature detected by the water temperature sensor exceeds the first preset temperature value.

6. The engine apparatus cooling pipe breakage detection method according to claim 1, characterized by, The determination of whether the engine device is operating under the high load condition comprises: determining that the engine device is not operating under the high load condition according to the ratio of the actual power of the engine body in the engine device to the rated power of the engine body being less than a preset ratio.

7. The engine apparatus cooling pipe breakage detection method according to any one of claims 1 to 6, characterized by, The method further comprises: starting an alarm device to issue an alarm according to the determination that the cooling pipe is broken.

8. An engine apparatus adapted to the engine apparatus cooling pipe breakage detection method according to any one of claims 1 to 7, characterized by, The engine device comprises: an engine body; a cooling pipe in which cooling liquid for cooling the engine body flows, and a water temperature sensor for detecting the temperature of the cooling liquid in real time is arranged in the cooling pipe; An exhaust system, comprising an exhaust pipe, an aftertreatment system, and an exhaust gas recirculation system, wherein the exhaust pipe is provided with an exhaust temperature sensor for detecting the temperature in the exhaust pipe in real time, the aftertreatment system is provided with an aftertreatment temperature sensor for detecting the temperature upstream of the oxidation catalyst in real time, and the exhaust gas recirculation system is provided with a cold exhaust temperature sensor for detecting the temperature at the exhaust gas recirculation valve in real time; an electronic control unit, which is in signal connection with the water temperature sensor, the exhaust temperature sensor, the aftertreatment temperature sensor, and the cold exhaust temperature sensor; and an alarm device, which is in signal connection with the electronic control unit and is configured to be able to issue an alarm according to an alarm signal issued by the electronic control unit.

9. The engine apparatus of claim 8, wherein, The alarm device comprises: a warning light, which is configured to be able to flash according to an alarm signal issued by the electronic control unit; and a loudspeaker, which is configured to be able to play a warning sound according to an alarm signal issued by the electronic control unit.

10. A vehicle characterized by comprising: An engine device as claimed in claim 8 or 9, comprising a vehicle body.

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