Heating control method, device, controller and medium for crankcase ventilation pipe

Abstract

This application provides a method, device, controller, and medium for controlling the heating of a crankcase ventilation tube. The method includes: determining whether the diesel engine is currently in dual-fuel mode, where the fuel in the dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature; if the diesel engine is determined to be in dual-fuel mode, obtaining the actual ratio of diesel to liquid fuel; determining a target heating duration for the crankcase ventilation tube based on the actual ratio; and controlling a heating element to heat the crankcase ventilation tube to achieve the target heating duration. The method of this application improves the accuracy of crankcase ventilation tube heating control in dual-fuel mode.

Description

Technical Field

[0001] The present application relates to diesel engine technology, and in particular to a heating control method, device, controller and medium for a crankcase ventilation pipe. Background Art

[0002] In some cold regions, the crankcase ventilation pipe of a diesel engine is prone to ice formation. Ice formation causes the crankcase pressure to rise. When the crankcase pressure is higher than the ambient pressure, the oil in the crankcase will be discharged through the oil dipstick (used to measure the oil level) connected to the outside world, causing oil leakage. Therefore, the crankcase ventilation pipe needs to be heated.

[0003] Currently, electric heating is often used to heat the crankcase ventilation pipe. Specifically, the crankcase ventilation pipe is heated by controlling a heating element located therein. Heating of the crankcase ventilation pipe is stopped only when the diesel engine carrier (the device on which the diesel engine is installed and relies on the diesel engine for operation, such as a car) stops running.

[0004] However, in dual-fuel mode, diesel engines experience varying degrees of freezing depending on the diesel and liquid fuel ratio, leading to varying heating times. The aforementioned heating method often results in a discrepancy between the crankcase ventilation pipe heating time and the actual required heating time. Applying this heating method to a dual-fuel diesel engine would result in reduced heating control accuracy in dual-fuel mode. Summary of the Invention

[0005] The present application provides a crankcase ventilation pipe heating control method, device, controller and medium, which are used to solve the technical problem of low accuracy of heating control in dual-fuel mode in the prior art.

[0006] In a first aspect, the present application provides a method for controlling heating of a crankcase ventilation pipe, comprising:

[0007] Determining whether the diesel engine is currently in a dual-fuel mode, where the fuel in the dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature;

[0008] If it is determined that the diesel engine is in dual-fuel mode, obtaining an actual ratio of diesel and liquid fuel;

[0009] determining a target heating time of the crankcase ventilation pipe based on the actual ratio;

[0010] The heating element is controlled to heat the crankcase ventilation pipe for the target heating time.

[0011] In a second aspect, the present application provides a crankcase ventilation pipe heating control device, comprising:

[0012] a fuel mode determination module, configured to determine whether the diesel engine is currently in a dual-fuel mode, wherein the fuel in the dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature;

[0013] an actual ratio determination module, configured to obtain an actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in dual-fuel mode;

[0014] a heating time determination module, configured to determine a target heating time of the crankcase ventilation pipe based on the actual ratio;

[0015] The ventilation pipe heating module is used to control the heating element to heat the crankcase ventilation pipe to achieve the target heating time.

[0016] In a third aspect, the present application provides a controller, comprising: a processor, and a memory communicatively connected to the processor;

[0017] The memory stores computer-executable instructions;

[0018] The processor executes the computer-executable instructions stored in the memory to implement the method according to the first aspect.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in the first aspect.

[0020] The present application provides a crankcase ventilation tube heating control method, device, controller, and medium. These methods determine whether a diesel engine is currently operating in dual-fuel mode, where the fuels in dual-fuel mode include diesel and a liquid fuel other than diesel that is liquid at room temperature. If the diesel engine is determined to be in dual-fuel mode, the actual ratio of diesel to liquid fuel is obtained. Based on the actual ratio, a target heating time for the crankcase ventilation tube is determined. Finally, a heating element is controlled to heat the crankcase ventilation tube to achieve the target heating time. Due to different ratios of diesel to liquid fuel and varying degrees of freezing, the required heating time for the crankcase ventilation tube varies. When the diesel engine is in dual-fuel mode, the target heating time is determined by obtaining the actual ratio of diesel to liquid fuel, ensuring that the target heating time approximates the actual heating time required for the crankcase ventilation tube. Heating the crankcase ventilation tube according to the target heating time can reduce the error between the actual and required heating times for the crankcase ventilation tube, thereby improving the accuracy of heating control in dual-fuel mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 A diagram illustrating an application scenario for implementing the crankcase ventilation pipe heating control method according to an embodiment of the present application;

[0023] Figure 2 This is a flow chart of a method for controlling the heating of a crankcase ventilation pipe according to an embodiment of the present application;

[0024] Figure 3 This is a flow chart of a method for controlling the heating of a crankcase ventilation pipe according to another embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of the crankcase ventilation pipe heating control method implemented in this application;

[0026] Figure 5 The figure is a schematic diagram of the structure of a controller used to implement the heating control method of the crankcase ventilation pipe.

[0027] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0029] In order to clearly understand the technical solution of the present application, the solution of the prior art is first introduced in detail.

[0030] In the traditional way, electric heating is often used to heat the crankcase ventilation pipe. Specifically, the crankcase ventilation pipe is heated by controlling the heating element at the crankcase ventilation pipe. When the diesel engine carrier (the equipment that installs the diesel engine and relies on the diesel engine to run, such as a car) stops running, the crankcase ventilation pipe is stopped from heating. However, in the dual-fuel mode, the degree of freezing of the diesel engine will vary under different ratios of diesel and liquid fuel, and the required heating time will be different. The above heating method usually causes a certain error between the heating time of the crankcase ventilation pipe and the actual required heating time. If the above heating method is applied to the dual-fuel mode of the diesel engine, the accuracy of the heating control in the dual-fuel mode will be low.

[0031] Therefore, when faced with the technical problems of the prior art, the inventors discovered through creative research that in order to improve the accuracy of heating control in dual-fuel mode, it is first determined whether the diesel engine is currently in dual-fuel mode. When it is determined that the diesel engine is in dual-fuel mode, the actual ratio of diesel and liquid fuel is obtained. Based on the actual ratio, the target heating time of the crankcase ventilation pipe is determined. The heating element is controlled to heat the crankcase ventilation pipe to achieve the target heating time. Since the heating time of the crankcase ventilation pipe is directly related to the ratio of diesel and liquid fuel, by obtaining the actual ratio of diesel and liquid fuel to determine the target heating time, the target heating time can be made close to the actual heating time required for the crankcase ventilation pipe. Therefore, heating the crankcase ventilation pipe according to the target heating time can improve the accuracy of heating control in dual-fuel mode.

[0032] like Figure 1 As shown, an application scenario of the crankcase ventilation tube heating control method provided by an embodiment of the present application includes a controller 11 in the corresponding network architecture. Controller 11 is a diesel engine controller 11 (Electronic Control Unit). Controller 11 determines the current fuel mode of the diesel engine. If it is in dual-fuel mode, it obtains the actual ratio of diesel and liquid fuel to determine the target heating time of the crankcase ventilation tube 13 and controls the heating element 12 to heat the crankcase ventilation tube 13 for the target heating time. If it is in pure diesel mode, the heating element 12 is controlled to continue heating the crankcase ventilation tube 13 until the diesel engine (or the carrier of the diesel engine) stops running.

[0033] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0034] Figure 2 A method for controlling the heating of a crankcase ventilation pipe according to an embodiment of the present application is provided. Figure 2 As shown, the controller is the main body of the crankcase ventilation pipe heating control method provided in this embodiment. The crankcase ventilation pipe heating control method provided in this embodiment includes the following steps:

[0035] Step 101 : determining whether the diesel engine is currently in a dual-fuel mode, where the fuel in the dual-fuel mode includes diesel and a liquid fuel that is liquid at room temperature in addition to diesel.

[0036] The crankcase ventilation pipe is the ventilation pipe for the diesel engine's crankcase. It includes the ventilator outlet pipe and the diesel engine's intake manifold. In cold regions, the outer wall temperature of the crankcase ventilation pipe can easily drop below zero degrees Celsius, posing a high risk of freezing.

[0037] A diesel engine can operate in either dual-fuel mode or pure diesel mode. In dual-fuel mode, the engine's fuel includes not only diesel but also a liquid fuel that is liquid at room temperature. Alternatively, the liquid fuel may be methanol, ether, or other liquid fuels. In pure diesel mode, the engine's fuel consists solely of diesel.

[0038] Whether the current diesel engine is in the dual-fuel mode can be determined by obtaining the current working conditions of the diesel engine, such as the speed and temperature of the diesel engine.

[0039] Step 102: If it is determined that the diesel engine is in dual-fuel mode, the actual ratio of diesel and liquid fuel is obtained.

[0040] When a diesel engine is running, the amount of diesel and liquid fuel injected into the cylinder through the oil circulation system may vary each time. The actual ratio of diesel and liquid fuel refers to the ratio of diesel and liquid fuel in the current oil circulation.

[0041] The calorific value of diesel is 42.7 J / kg. Taking methanol as an example, a liquid fuel, the calorific value of methanol is 19.5 J / kg. Assuming the total heat required for normal diesel engine operation is 466 J, the diesel fuel weighs 10 kg, and the heat generated by diesel is 427 J, then 2 kg of methanol is needed to generate 39 J of heat. This means the actual diesel to liquid fuel ratio is 5:1. Alternatively, the actual diesel to liquid fuel ratio refers to the ratio of heat provided by the diesel to liquid fuel. In this example, the actual diesel to liquid fuel ratio is 427:39.

[0042] When obtaining the actual ratio of diesel and liquid fuel, it can be calculated based on the actual real-time measurement of the diesel injection portion and the liquid fuel injection portion, or it can be determined based on historical experience data according to the real-time monitoring of the working conditions of the diesel engine.

[0043] Step 103: Determine a target heating time of the crankcase ventilation pipe based on the actual ratio.

[0044] The target heating time is determined based on the actual fuel mix. Since the actual crankcase ventilation pipe heating time is directly related to the actual diesel and liquid fuel mix, the target heating time determined based on the actual mix is ​​close to the actual crankcase ventilation pipe heating time.

[0045] After the actual proportion is obtained, the target heating time of the crankcase ventilation tube can be determined.

[0046] Step 104 : Controlling the heating element to heat the crankcase ventilation pipe for the target heating time.

[0047] The heating element refers to a component for heating the crankcase ventilation pipe, which may be an electric heating wire.

[0048] For example, the heating wire is electrically connected to a solenoid valve. When the controller controls the solenoid valve to connect to the heating wire, the heating wire generates heat, thereby heating the crankcase ventilation tube. When the target heating time is reached, the controller controls the solenoid valve to disconnect the heating wire, disabling it.

[0049] In this application, a method is used to determine whether a diesel engine is currently operating in dual-fuel mode, where the fuel in said dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature. If the diesel engine is determined to be in dual-fuel mode, the actual ratio of diesel to liquid fuel is obtained. Based on the actual ratio, a target heating time for the crankcase ventilation tube is determined. Finally, a heating element is controlled to heat the crankcase ventilation tube to achieve the target heating time. Due to different ratios of diesel to liquid fuel and varying degrees of freezing, the required heating time for the crankcase ventilation tube varies. When the diesel engine is in dual-fuel mode, the target heating time is determined by obtaining the actual ratio of diesel to liquid fuel, ensuring that the target heating time approximates the actual required heating time for the crankcase ventilation tube. Heating the crankcase ventilation tube according to the target heating time can reduce the error between the actual and required heating times for the crankcase ventilation tube, thereby improving the accuracy of heating control in dual-fuel mode.

[0050] As an optional implementation, Figure 3As shown, in this embodiment, step 101 includes the following steps:

[0051] Step 201: Obtain the current speed and water temperature of the diesel engine.

[0052] The speed of a diesel engine can be measured using a crankshaft speed sensor. Water temperature refers to the temperature of the coolant in the diesel engine's water circulation system and can be measured using a temperature sensor installed on the inner wall of the water circulation system or at the outlet of the water circulation system.

[0053] Step 202: Determine whether the diesel engine is in dual-fuel mode based on the speed of the diesel engine and the water temperature.

[0054] Since liquid fuel cannot burn to provide energy when the diesel engine is idling and / or at low temperatures, the speed and water temperature of the diesel engine can be used to determine whether the diesel engine is in dual-fuel mode.

[0055] In this embodiment, the current diesel engine speed and water temperature are obtained. The water temperature refers to the temperature of the coolant in the diesel engine's water circulation system. Based on the diesel engine speed and water temperature, whether the diesel engine is in dual-fuel mode is determined. Because the determination of whether the diesel engine is in dual-fuel mode is based on the diesel engine speed and water temperature, i.e., actual operating conditions, it has a certain degree of accuracy.

[0056] As an optional implementation, in this embodiment, step 202 includes the following steps:

[0057] Step 301: Determine whether the speed of the diesel engine and the water temperature have reached the triggering conditions for starting the combustion of the liquid fuel.

[0058] The liquid fuel will not start burning until the diesel engine's speed and water temperature reach the trigger conditions for the liquid fuel to start burning. The trigger conditions include the speed reaching a preset speed and the water temperature reaching a preset temperature.

[0059] Step 302: If it is determined that the trigger condition is met, then the fuel mode of the diesel engine is determined to be a dual-fuel mode.

[0060] Among them, after the speed and water temperature of the diesel engine reach the trigger conditions, the liquid fuel begins to burn. At this time, the diesel engine is in dual-fuel mode, and diesel and liquid fuel are sprayed into the cylinder in the oil circulation system.

[0061] Step 303: If it is determined that the trigger condition is not met, the fuel mode of the diesel engine is determined to be a pure diesel mode.

[0062] Among them, the speed and water temperature of the diesel engine do not reach the trigger conditions, and the liquid fuel cannot burn and work. At this time, the diesel engine is in pure diesel mode, and only diesel is sprayed into the cylinder in the oil circulation system.

[0063] In this embodiment, a determination is made as to whether the diesel engine's speed and water temperature meet trigger conditions for initiating liquid fuel combustion. If the trigger conditions are met, the diesel engine's fuel mode is determined to be dual-fuel mode; if the trigger conditions are not met, the diesel engine's fuel mode is determined to be pure diesel mode. Determining whether the trigger conditions for initiating liquid fuel combustion are met based on the diesel engine's speed and water temperature, thereby determining whether the diesel engine is in dual-fuel mode, can improve the accuracy and objectivity of the determination.

[0064] As an optional implementation, in this embodiment, step 102 includes the following steps:

[0065] Step 401: Determine the current operating zone of the diesel engine.

[0066] The operating zone refers to the area in which the diesel engine operates. The controller can determine the diesel engine's operating zone using satellite remote sensing technology. The diesel engine's diesel and liquid fuel ratios vary when operating in different operating zones.

[0067] Step 402: Determine the actual ratio of diesel and liquid fuel corresponding to the current operating zone according to a pre-stored first mapping relationship.

[0068] In this embodiment, the current operating range of the diesel engine is determined; and the actual ratio of diesel to liquid fuel corresponding to the current operating range is determined based on a pre-stored first mapping relationship, wherein the first mapping relationship is a mapping relationship between the operating range and the ratio of diesel to liquid fuel. Because the actual ratio is determined based on the operating range of the diesel engine, the accuracy of the actual ratio can be guaranteed.

[0069] As an optional implementation, in this embodiment, step 103 includes: determining a target heating time corresponding to the actual ratio based on a pre-stored second mapping relationship.

[0070] The second mapping relationship is the relationship between the diesel-to-liquid fuel ratio and the crankcase ventilation tube heating time. This second mapping relationship is manually calibrated in advance. The diesel-to-liquid fuel ratio and the crankcase ventilation tube heating time are negatively correlated. That is, the lower the diesel-to-liquid fuel ratio, the longer the crankcase ventilation tube heating time, and vice versa.

[0071] Taking methanol as an example, the second mapping relationship is shown in Table 1:

[0072] Table 1

[0073]

[0074] For example, when the diesel-to-methanol ratio is 5:1, the crankcase ventilation tube heating time is 5 minutes; when the diesel-to-methanol ratio is 1:1, the crankcase ventilation tube heating time is 20 minutes. It can be seen that the diesel-to-liquid fuel ratio is negatively correlated with the crankcase ventilation tube heating time. This is because the lower the diesel-to-liquid fuel ratio, that is, the higher the proportion of liquid fuel, the greater the water content of the exhaust gas in the crankcase, and the more severe the ice formation in the crankcase ventilation tube. Therefore, the lower the diesel-to-liquid fuel ratio, the longer the required heating time.

[0075] In this embodiment, the target heating time corresponding to the actual ratio is determined based on the pre-stored second mapping relationship. Since the target heating time is determined based on the second mapping relationship, the corresponding target heating time can be obtained after the actual ratio is determined, thereby improving the efficiency of determining the target heating time.

[0076] As an optional implementation manner, in this embodiment, before step 104, the following steps are further included:

[0077] Step 501: Determine whether the diesel engine has reached a heating condition for heating the crankcase ventilation pipe.

[0078] The heating condition refers to the conditions that the diesel engine needs to meet when heating the crankcase ventilation pipe. The crankcase ventilation pipe is heated only when the heating condition is met.

[0079] Step 502: If it is determined that the heating condition is met, the step of controlling the heating element to heat the crankcase ventilation pipe for the target heating time is executed.

[0080] In this embodiment, before controlling the heating element to heat the crankcase ventilation pipe for the target heating time, it is first determined whether the diesel engine has reached the heating conditions. Heating is performed only when the heating conditions are reached, which is beneficial to ensuring the reliability of heating the crankcase ventilation pipe.

[0081] As an optional implementation, in this embodiment, step 501 includes the following steps:

[0082] Step 601: Acquire the current oil temperature of the diesel engine and the ambient temperature.

[0083] Among them, engine oil refers to the lubricating oil in the diesel engine's oil circulation system, and engine oil temperature refers to the temperature of the lubricating oil in the oil circulation system. The engine oil temperature can be measured by a temperature sensor installed on the inner wall of the pipeline in the oil circulation system or at the terminal outlet of the oil circulation system. Ambient temperature refers to the temperature of the external environment and can be measured by a temperature sensor installed on the diesel engine carrier or the diesel engine.

[0084] Step 602: If the highest temperature among the water temperature, the oil temperature and the ambient temperature is lower than the preset temperature, it is determined that the diesel engine has reached the heating condition for heating the crankcase ventilation pipe.

[0085] Water temperature refers to the temperature of the coolant in the diesel engine's water circulation system. A comprehensive assessment of water temperature, oil temperature, and ambient temperature reveals that if the highest of these three remains below the preset temperature, the diesel engine is operating in a low-temperature environment prone to freezing, meeting the necessary heating conditions for the crankcase ventilation pipe.

[0086] Step 603: If the lowest temperature among the water temperature, the engine oil temperature and the ambient temperature is not lower than a preset temperature, it is determined that the diesel engine does not meet the heating condition for heating the crankcase ventilation pipe.

[0087] Among them, the comprehensive judgment of water temperature, oil temperature and ambient temperature is that if the lowest temperature among the three is still not lower than the preset temperature, it means that the diesel engine is not running in a low-temperature environment prone to freezing, and the heating conditions for heating the crankcase ventilation pipe are not met.

[0088] In this embodiment, the current diesel engine oil temperature and ambient temperature are obtained; if the highest of the water temperature, the oil temperature, and the ambient temperature is lower than a preset temperature, the diesel engine is determined to have met the heating condition for heating the crankcase ventilation pipe; if the lowest of the water temperature, the oil temperature, and the ambient temperature is not lower than the preset temperature, the diesel engine is determined to have not met the heating condition for heating the crankcase ventilation pipe. Because the determination of whether the diesel engine has met the heating condition is based on multiple temperature parameters such as the water temperature, the oil temperature, and the ambient temperature, the accuracy of the determination of whether the heating condition has been met can be improved.

[0089] Figure 4 FIG. 1 is a schematic diagram of a heating control device for a crankcase ventilation pipe according to an embodiment of the present application. Figure 4As shown, the crankcase ventilation pipe heating control device 40 provided in this embodiment is located in the controller. The crankcase ventilation pipe heating control device 40 provided in this embodiment includes: a fuel mode determination module 41, an actual ratio determination module 42, a heating time determination module 43 and a ventilation pipe heating module 44, wherein:

[0090] The fuel mode determination module 41 is used to determine whether the diesel engine is currently in a dual-fuel mode, where the fuel in the dual-fuel mode includes diesel and a liquid fuel that is liquid at room temperature other than diesel;

[0091] an actual ratio determination module 42 for obtaining an actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in dual-fuel mode;

[0092] a heating time determination module 43, configured to determine a target heating time of the crankcase ventilation pipe based on the actual ratio;

[0093] The ventilation pipe heating module 44 is used to control the heating element to heat the crankcase ventilation pipe to achieve the target heating time.

[0094] Optionally, the fuel mode judgment module 41 is specifically used to: obtain the current speed and water temperature of the diesel engine, where the water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine; and determine whether the diesel engine is in dual fuel mode based on the speed and water temperature of the diesel engine.

[0095] Optionally, the fuel mode judgment module 41, when determining whether the diesel engine is in dual-fuel mode based on the speed of the diesel engine and the water temperature, is specifically used to: determine whether the speed of the diesel engine and the water temperature reach the trigger conditions for the liquid fuel to start combustion; if it is determined that the trigger conditions are met, determine that the fuel mode of the diesel engine is dual-fuel mode; if it is determined that the trigger conditions are not met, determine that the fuel mode of the diesel engine is pure diesel mode.

[0096] Optionally, when obtaining the actual ratio of diesel and liquid fuel, the actual ratio determination module 42 is specifically used to: determine the current operating zone of the diesel engine; determine the actual ratio of diesel and liquid fuel corresponding to the current operating zone based on a pre-stored first mapping relationship, wherein the first mapping relationship is a mapping relationship between the operating zone and the ratio of diesel and liquid fuel.

[0097] Optionally, the heating time determination module 43 is specifically used to: determine the target heating time corresponding to the actual ratio based on a pre-stored second mapping relationship, the second mapping relationship being a mapping relationship between the ratio of diesel and liquid fuel and the heating time of the crankcase ventilation pipe, and the ratio of diesel and liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe.

[0098] Optionally, it also includes a heating condition judgment module, which is used to: judge whether the diesel engine has reached the heating condition for heating the crankcase ventilation pipe before the controlling heating element heats the crankcase ventilation pipe for the target heating time; if it is determined that the heating condition is met, execute the step of controlling the heating element to heat the crankcase ventilation pipe for the target heating time.

[0099] Optionally, the heating condition judgment module is used to judge whether the diesel engine has reached the heating condition for heating the crankcase ventilation pipe, and is specifically used to: obtain the current oil temperature and ambient temperature of the diesel engine; if the highest temperature among the water temperature, the oil temperature and the ambient temperature is lower than a preset temperature, it is determined that the diesel engine has reached the heating condition for heating the crankcase ventilation pipe; if the lowest temperature among the water temperature, the oil temperature and the ambient temperature is not lower than the preset temperature, it is determined that the diesel engine has not reached the heating condition for heating the crankcase ventilation pipe.

[0100] Figure 5 is a block diagram of a controller according to an exemplary embodiment. The device may be as follows Figure 5 As shown, the controller includes: a memory 51 and a processor 52; the memory 51 is a memory for storing processor executable instructions; the processor 52 is used to run computer programs or instructions to implement the crankcase ventilation pipe heating control method provided in any one of the above embodiments.

[0101] The memory 51 is used to store programs. Specifically, the programs may include program code, which includes computer operating instructions. The memory 51 may include high-speed RAM memory or non-volatile memory, such as at least one disk storage device.

[0102] The processor 52 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present disclosure.

[0103] Optionally, in a specific implementation, if the memory 51 and the processor 52 are implemented independently, the memory 51 and the processor 52 can be connected to each other via a bus 53 and communicate with each other. The bus 53 can be an Industry Standard Architecture (ISA) bus 53, a Peripheral Component Interconnect (PCI) bus 53, or an Extended Industry Standard Architecture (EISA) bus 53. The bus 53 can be divided into an address bus 53, a data bus 53, a control bus 53, etc. For ease of representation, Figure 5 Only one thick line is used in the figure, but it does not mean that there is only one bus 53 or one type of bus 53.

[0104] Optionally, in a specific implementation, if the memory 51 and the processor 52 are integrated on a chip, the memory 51 and the processor 52 can communicate with each other through an internal interface.

[0105] A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor of a controller, enables the controller to execute the crankcase ventilation pipe heating control method of the controller.

[0106] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0107] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for controlling the heating of a crankcase ventilation pipe, characterized in that: The method comprises: Determining whether the diesel engine is currently in a dual-fuel mode, where the fuel in the dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature; If it is determined that the diesel engine is in dual-fuel mode, obtaining an actual ratio of diesel and liquid fuel; determining a target heating time of the crankcase ventilation pipe based on the actual ratio; controlling a heating element to heat the crankcase ventilation pipe to achieve the target heating time; The actual ratio of diesel and liquid fuel is obtained, including: Determining a current operating zone of the diesel engine; determining an actual ratio of diesel to liquid fuel corresponding to the current operating range according to a pre-stored first mapping relationship, wherein the first mapping relationship is a mapping relationship between the operating range and the ratio of diesel to liquid fuel; Determining a target heating time of the crankcase ventilation pipe based on the actual ratio includes: Based on a pre-stored second mapping relationship, a target heating time corresponding to the actual ratio is determined. The second mapping relationship is a mapping relationship between the ratio of diesel and liquid fuel and the heating time of the crankcase ventilation pipe. The ratio of diesel and liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe.

2. The method according to claim 1, characterized in that The determining whether the diesel engine is currently in the dual-fuel mode includes: Obtain the current speed and water temperature of the diesel engine, where the water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine; Whether the diesel engine is in a dual fuel mode is determined according to the speed of the diesel engine and the water temperature.

3. The method according to claim 2, characterized in that The determining, based on the speed of the diesel engine and the water temperature, whether the fuel mode of the diesel engine is the dual-fuel mode includes: Determining whether the speed of the diesel engine and the water temperature meet the triggering conditions for starting combustion of the liquid fuel; If it is determined that the trigger condition is met, determining that the fuel mode of the diesel engine is a dual-fuel mode; If it is determined that the trigger condition is not met, the fuel mode of the diesel engine is determined to be a pure diesel mode.

4. The method according to claim 1, wherein Before controlling the heating element to heat the crankcase ventilation pipe for the target heating time, the method further includes: determining whether the diesel engine has reached a heating condition for heating the crankcase ventilation pipe; If it is determined that the heating condition is met, the step of controlling the heating element to heat the crankcase ventilation pipe for the target heating time is performed.

5. The method according to claim 4, characterized in that The determining whether the diesel engine meets the heating condition for heating the crankcase ventilation pipe includes: Obtaining the current oil temperature of the diesel engine and the ambient temperature; If the highest temperature among the water temperature, the engine oil temperature and the ambient temperature is lower than a preset temperature, it is determined that the diesel engine has reached a heating condition for heating the crankcase ventilation pipe; If the lowest temperature among the water temperature, the engine oil temperature and the ambient temperature is not lower than a preset temperature, it is determined that the diesel engine has not reached a heating condition for heating the crankcase ventilation pipe.

6. A heating control device for a crankcase ventilation pipe, the heating control device being used to implement the heating control method according to any one of claims 1 to 5, characterized in that: The device comprises: a fuel mode determination module, configured to determine whether the diesel engine is currently in a dual-fuel mode, wherein the fuel in the dual-fuel mode includes diesel and a liquid fuel other than diesel that is liquid at room temperature; an actual ratio determination module, configured to obtain an actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in dual-fuel mode; a heating time determination module, configured to determine a target heating time of the crankcase ventilation pipe based on the actual ratio; a ventilation pipe heating module, configured to control a heating element to heat the crankcase ventilation pipe to achieve the target heating time; The actual ratio determination module is specifically configured to determine a current operating range of the diesel engine; and determine an actual ratio of diesel to liquid fuel corresponding to the current operating range based on a pre-stored first mapping relationship, wherein the first mapping relationship is a mapping relationship between the operating range and the ratio of diesel to liquid fuel; The heating time determination module is specifically used to determine the target heating time corresponding to the actual ratio based on a pre-stored second mapping relationship, where the second mapping relationship is a mapping relationship between the ratio of diesel and liquid fuel and the heating time of the crankcase ventilation pipe, and the ratio of diesel and liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe.

7. A controller, characterized in that: include: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 5 when executed by a processor.

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