CN116006299A - Heating control method, device, controller and medium for crankcase ventilation pipe - Google Patents

Abstract

The present application provides a heating control method, device, controller and medium for a crankcase ventilation pipe. The method includes: judging whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel oil, and liquid fuels that are liquid at room temperature except diesel; if it is determined that the diesel engine is in a dual-fuel mode, obtaining The actual ratio of diesel and liquid fuel; based on the actual ratio, determine the target heating duration of the crankcase ventilation pipe; control the heating element to heat the crankcase ventilation pipe to reach the target heating duration. By adopting the method of the present application, the accuracy of heating control for the ventilation pipe of the crankcase in the dual-fuel mode is improved.

Description

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

technical field

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

Background technique

In some cold regions, the ventilation pipe of the crankcase of the diesel engine is easy to freeze, which will lead to higher and higher air pressure in the crankcase. When the air pressure in the crankcase is higher than that of the external environment, the oil in the crankcase will pass through The oil dipstick (used to measure the oil level) that communicates with the outside world drains, causing the oil to leak. Therefore, the crankcase ventilation pipe needs to be heated.

At present, when heating the crankcase ventilation pipe, electric heating is often used. Specifically, the crankcase ventilation pipe is heated by controlling the heating element at the crankcase ventilation pipe. When the equipment that is running, such as a car) stops running, the heating of the crankcase ventilation pipe is stopped.

However, under the dual-fuel mode, the icing degree of the diesel engine will be different under different ratios of diesel and liquid fuel, and the required heating time will be different. The above-mentioned 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.

Contents of the invention

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

In a first aspect, the present application provides a heating control method for a crankcase ventilation pipe, comprising:

Judging whether the diesel engine is currently in a dual-fuel mode, the fuel in the dual-fuel mode includes diesel, and liquid fuels that are liquid at room temperature except diesel;

If it is determined that the diesel engine is in a dual-fuel mode, the actual ratio of diesel and liquid fuel is obtained;

Based on the actual ratio, determine the target heating duration of the crankcase ventilation pipe;

The heating element is controlled to heat the crankcase ventilation pipe to reach the target heating duration.

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

The fuel mode judging module is used to judge whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel oil, and liquid fuels that are liquid at room temperature except diesel;

The actual ratio determination module is used to obtain the actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in a dual-fuel mode;

A heating duration determination module, configured to determine the target heating duration of the crankcase ventilation pipe based on the actual ratio;

The ventilation pipe heating module is used to control the heating element to heat the crankcase ventilation pipe to reach the target heating duration.

In a third aspect, the present application provides a controller, including: a processor, and a memory communicatively connected to the processor;

the memory stores computer-executable instructions;

The processor executes the computer-implemented instructions stored in the memory to implement the method as described in the first aspect.

In a fourth aspect, the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement the method as described in the first aspect when executed by a processor .

The heating control method, device, controller and medium of the crankcase ventilation pipe provided by the present application judge whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel, and is liquid at normal temperature except diesel If it is determined that the diesel engine is in a dual-fuel mode, then obtain the actual ratio of diesel and liquid fuel; based on the actual ratio, determine the target heating time of the crankcase ventilation pipe; control the heating element to the The crankcase ventilation tube is heated for the target heating time. Due to the different proportions of diesel and liquid fuel, the degree of freezing is different, and the heating time required for the crankcase ventilation pipe is different. When the diesel engine is in dual-fuel mode, the target heating time is determined by obtaining the actual ratio of diesel and liquid fuel, so that the target heating time is close to the actual required heating time of the crankcase ventilation pipe. Heating the crankcase ventilation pipe according to the target heating time can reduce the error between the actual heating time of the crankcase ventilation pipe and the actual required heating time, thereby improving the accuracy of heating control in the dual-fuel mode.

Description of drawings

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

FIG. 1 is an application scene diagram for realizing the heating control method of the crankcase ventilation pipe according to the embodiment of the present application;

Fig. 2 is a schematic flow chart of a heating control method for a crankcase ventilation pipe according to an embodiment of the present application;

FIG. 3 is a schematic flow diagram of a heating control method for a crankcase ventilation pipe according to another embodiment of the present application;

Fig. 4 is the structural representation that the application realizes the heating control method of the crankcase ventilation pipe;

Fig. 5 is a structural schematic diagram of a controller used to realize the heating control method of the crankcase ventilation pipe.

By means of the above drawings, specific embodiments of the present application have been shown, which will be described in more detail hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

In order to clearly understand the technical solutions of the present application, the solutions of the prior art are first introduced in detail.

In the traditional way, when heating the crankcase ventilation pipe, electric heating is often used. Specifically, the crankcase ventilation pipe is heated by controlling the heating element at the crankcase ventilation pipe. When the diesel engine carrier (installed with a diesel engine and relies on Diesel engine running equipment, such as automobiles, stops heating the crankcase ventilation pipe when it stops running. However, under the dual-fuel mode, the icing degree of the diesel engine will be different under different ratios of diesel and liquid fuel, and the required heating time will be different. The above-mentioned 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.

Therefore, when faced with the technical problems of the prior art, the inventor found through creative research that in order to improve the accuracy of heating control under the dual-fuel mode, it is first necessary to determine whether the diesel engine is currently in the dual-fuel mode, before determining whether the diesel engine When the engine is in dual-fuel mode, obtain the actual ratio of diesel and liquid fuel. Based on the actual ratio, determine the target heating time for the crankcase ventilation tube. The heating element is controlled to heat the crankcase ventilation pipe for a 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 of the crankcase ventilation pipe. required heating time. Therefore, the crankcase ventilation pipe is heated according to the target heating duration, which can improve the accuracy of heating control in the dual-fuel mode.

As shown in FIG. 1 , the application scenario of the heating control method of the crankcase ventilation pipe provided by the embodiment of the present application, in this application scenario, the corresponding network architecture includes a controller 11, and the controller 11 is a controller 11 of a diesel engine ( Electronic Control Unit). The controller 11 judges the current fuel mode of the diesel engine. If it is a dual-fuel mode, the actual ratio of diesel and liquid fuel is obtained to determine the target heating time of the crankcase ventilation pipe 13, and control the heating element 12 to the crankcase ventilation pipe 13. Heat up to the target heating time. If it is a pure diesel mode, the heating element 12 is controlled to heat the crankcase ventilation pipe 13 until the diesel engine (or the carrier of the diesel engine) stops running.

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

Fig. 2 is a heating control method of the crankcase ventilation pipe provided by an embodiment of the present application. As shown in Fig. 2, the execution subject of the heating control method of the crankcase ventilation pipe provided by this embodiment is a controller. Then the heating control method of the crankcase ventilation pipe provided by the present embodiment comprises the following steps:

Step 101, judging whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel and liquid fuels that are liquid at normal temperature except diesel.

Wherein, the crankcase ventilation pipe is the ventilation pipe of the crankcase of the diesel engine, and the crankcase ventilation pipe includes the outlet pipe of the ventilator and the intake manifold of the diesel engine. In cold regions, the temperature of the outer wall of the crankcase ventilation pipe is likely to be below zero, and there is a high risk of freezing.

Diesel engines can be run in dual fuel mode or in pure diesel mode. In the dual-fuel mode, the fuel of the diesel engine includes not only diesel, but also liquid fuels other than diesel that are liquid at normal temperature. Alternatively, the liquid fuel may be methanol, ether, etc. In pure diesel mode, the fuel for the diesel engine consists of diesel only.

Judging whether the current diesel engine is in 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.

Step 102, if it is determined that the diesel engine is in dual-fuel mode, then obtain the actual ratio of diesel and liquid fuel.

Wherein, when the diesel engine is running, the amounts of diesel and liquid fuel injected into the cylinder each time through the oil circuit circulation system may be different. The actual ratio of diesel and liquid fuel refers to the matching ratio of diesel and liquid fuel in the current oil circuit cycle.

The calorific value of diesel oil is 42.7J/kg, and the liquid fuel takes methanol as an example, and the calorific value of methanol is 19.5J/kg. Assuming that the total heat required by the diesel engine in normal operation is 466J, the amount of diesel is 10kg, and the heat generated by diesel is 427J, the amount of methanol required is 2kg, so that the heat generated by methanol is 39J. That is, the actual ratio of diesel and liquid fuel is 5:1. It can also be understood that the actual ratio of diesel and liquid fuel is the heat supply ratio of diesel and liquid fuel. For example, in this example, the actual ratio of diesel and liquid fuel is 427:39.

When obtaining the actual ratio of diesel and liquid fuel, it can be calculated and determined according to the actual real-time measured diesel injection volume and liquid fuel injection volume, or can be determined based on historical experience data based on the real-time monitored working conditions of the diesel engine.

Step 103, based on the actual ratio, determine the target heating duration of the crankcase ventilation pipe.

Wherein, the target heating duration is the heating duration determined based on the actual proportioning. Since the actual required heating time of the crankcase ventilation pipe is directly related to the actual ratio of diesel and liquid fuel, the target heating time determined based on the actual ratio is close to the actual required heating time of the crankcase ventilation pipe.

After obtaining the actual ratio, it can be determined to obtain the target heating time of the crankcase ventilation pipe.

Step 104, controlling the heating element to heat the crankcase ventilation pipe to reach the target heating duration.

Wherein, the heating element refers to a component that heats the crankcase ventilation pipe, which may be an electric heating wire.

Taking the electric heating wire as an example, the electric heating wire is electrically connected to the solenoid valve, and when the controller controls the connection between the solenoid valve and the electric heating wire, the electric heating wire will generate heat during operation, thereby heating the crankcase ventilation pipe. When it is determined that the target heating time is reached, the controller controls the solenoid valve to disconnect the electric heating wire, so that the electric heating wire no longer works.

In the present application, by judging whether the diesel engine is currently in a dual-fuel mode, the fuel in the dual-fuel mode includes diesel oil, and liquid fuels that are liquid at room temperature except diesel; if it is determined that the diesel engine is in a dual-fuel mode, then Acquiring the actual ratio of diesel and liquid fuel; determining the target heating duration of the crankcase ventilation pipe based on the actual ratio; controlling the heating element to heat the crankcase ventilation pipe to reach the target heating duration. Due to the different proportions of diesel and liquid fuel, the degree of freezing is different, and the heating time required for the crankcase ventilation pipe is different. When the diesel engine is in dual-fuel mode, the target heating time is determined by obtaining the actual ratio of diesel and liquid fuel, so that the target heating time is close to the actual required heating time of the crankcase ventilation pipe. Heating the crankcase ventilation pipe according to the target heating time can reduce the error between the actual heating time of the crankcase ventilation pipe and the actual required heating time, thereby improving the accuracy of heating control in the dual-fuel mode.

As an optional implementation manner, as shown in FIG. 3, in this embodiment, step 101 includes the following steps:

Step 201, obtain the current rotational speed and water temperature of the diesel engine.

Wherein, the rotational speed of the diesel engine can be obtained by measuring the crankshaft rotational speed sensor. The water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine, which can be measured by a temperature sensor installed on the inner wall of the pipe in the water circulation system or at the outlet of the end of the water circulation system.

Step 202: Determine whether the diesel engine is in a dual-fuel mode according to the speed of the diesel engine and the water temperature.

Wherein, since the liquid fuel cannot be combusted to supply energy when the diesel engine is in an idling condition and/or at a low temperature. Therefore, according to the speed of the diesel engine and the water temperature, it can be determined whether the diesel engine is in dual-fuel mode.

In this embodiment, the current rotational speed and water temperature of the diesel engine are obtained, and the water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine; according to the rotational speed of the diesel engine and the water temperature, it is determined whether the diesel engine is For dual fuel mode. Since whether the diesel engine is in the dual-fuel mode is determined according to the speed of the diesel engine and the water temperature, that is, based on the actual working conditions, it has certain accuracy.

As an optional implementation manner, in this embodiment, step 202 includes the following steps:

Step 301, judging whether the rotation speed of the diesel engine and the water temperature meet the triggering conditions for starting combustion of the liquid fuel.

Wherein, the rotational speed and the water temperature of the diesel engine need to meet the trigger conditions for the liquid fuel to start burning, and the liquid fuel will start to burn. The triggering conditions include that the rotation speed reaches the preset rotation speed, and the water temperature reaches the preset temperature.

Step 302, if it is determined that the trigger condition is met, then determine that the fuel mode of the diesel engine is a dual fuel mode.

Wherein, after the speed of the diesel engine and the water temperature reach the triggering conditions, the liquid fuel starts to burn. At this time, the diesel engine is in a dual-fuel mode, and diesel oil and liquid fuel are injected into the cylinder in the oil circulation system.

Step 303, if it is determined that the trigger condition is not met, then determine that the fuel mode of the diesel engine is a pure diesel mode.

Among them, the speed and water temperature of the diesel engine do not meet the trigger conditions, and the liquid fuel cannot be burned. At this time, the diesel engine is in pure diesel mode, and only diesel oil is injected into the cylinder in the oil circulation system.

In this embodiment, it is judged whether the rotational speed of the diesel engine and the water temperature meet the triggering condition for starting combustion of the liquid fuel; if it is determined that the triggering condition is met, then it is determined that the fuel mode of the diesel engine is a dual-fuel mode ; If it is determined that the trigger condition is not met, then determine that the fuel mode of the diesel engine is a pure diesel mode. According to the speed of the diesel engine and the water temperature, it is determined whether the triggering condition for starting combustion of the liquid fuel is met, so as to judge whether the diesel engine is in a dual-fuel mode, which can improve the accuracy and objectivity of the judgment.

As an optional implementation manner, in this embodiment, step 102 includes the following steps:

Step 401, determine the working condition area where the diesel engine is currently located.

Wherein, the working condition area refers to the area where the diesel engine is running. The controller can determine the industrial and mining area where the diesel engine is located through satellite remote sensing technology. When the diesel engine is running in different working conditions, the corresponding ratio of diesel and liquid fuel is different.

Step 402, according to the first pre-stored mapping relationship, determine the actual ratio of diesel and liquid fuel corresponding to the current working condition.

In this embodiment, the working condition area where the diesel engine is currently located is determined; according to the first pre-stored mapping relationship, the actual ratio of diesel and liquid fuel corresponding to the current working condition area is determined, and the first A mapping relationship is the mapping relationship between the working condition area and the ratio of diesel and liquid fuel. Since the actual ratio is determined based on the working condition area where the diesel engine is located, the accuracy of the actual ratio can be guaranteed.

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

Wherein, the second mapping relationship is the mapping relationship between the ratio of diesel oil and liquid fuel, and the heating time of the crankcase ventilation pipe, and the second mapping relationship is obtained by artificial calibration in advance. The ratio of diesel and liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe, that is, the lower the ratio of diesel and liquid fuel, the longer the heating time of the crankcase ventilation pipe, and vice versa.

When the liquid fuel is methanol as an example, the second mapping relationship is shown in Table 1:

Table 1

For example, when the ratio of diesel to methanol is 5:1, the heating time of the crankcase ventilation pipe is 5 minutes; when the ratio of diesel to methanol is 1:1, the heating time of the crankcase ventilation pipe is 20 minutes. It can be seen that the ratio of diesel to liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe. This is because the lower the ratio of diesel to liquid fuel, that is, the higher the proportion of liquid fuel, the more water content in the exhaust gas in the crankcase, and the more serious the freezing degree at the ventilation pipe of the crankcase. The lower the fuel ratio, the longer the heating time required.

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

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

Step 501, judging whether the diesel engine has reached the heating condition for heating the crankcase ventilation pipe.

Wherein, the heating condition refers to the condition that the diesel engine needs to meet when heating the crankcase ventilation pipe. The crankcase ventilation pipe is not heated until it reaches the heating condition.

Step 502, if it is determined that the heating condition is met, execute the step of controlling the heating element to heat the crankcase ventilation pipe to reach the target heating duration.

In this embodiment, before the heating element is controlled to heat the crankcase ventilation pipe to reach the target heating duration, it is first judged whether the diesel engine has reached the heating condition, and heating is performed only when the heating condition is reached, which is beneficial to ensure that the crankshaft Reliability when the box ventilation pipe is heated.

As an optional implementation manner, in this embodiment, step 501 includes the following steps:

Step 601, acquiring the current engine oil temperature and ambient temperature of the diesel engine.

Among them, the engine oil refers to the lubricating oil in the oil circuit circulation system of the diesel engine, and the engine oil temperature refers to the temperature of the lubricating oil in the oil circuit circulation system. Measured by a temperature sensor at the end outlet location of the system. The ambient temperature refers to the temperature of the external environment, which can be measured by a temperature sensor installed on the diesel engine carrier or the diesel engine.

Step 602, if the highest temperature among the water temperature, the engine 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

Among them, the water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine. Based on the judgment of water temperature, engine oil temperature and ambient temperature, if the highest temperature among the three is still lower than the preset temperature, it means that the diesel engine is running in a low-temperature environment that is prone to freezing, and the heating of the crankcase ventilation pipe has been achieved. condition.

Step 603, if the lowest temperature among the water temperature, the engine 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.

Among them, judging from the comprehensive water temperature, engine oil temperature and ambient temperature, if the lowest temperature among the three is still not lower than the preset temperature, it indicates that the diesel engine is not operating in a low-temperature environment that is prone to freezing, and the temperature of the crankcase ventilation pipe has not been reached. Heating conditions for heating.

In this embodiment, the engine oil temperature of the current diesel engine and the ambient temperature are obtained; if the highest temperature among the water temperature, the engine oil temperature, and the ambient temperature is lower than the preset temperature, it is determined that the diesel engine has reached The heating conditions for heating the crankcase ventilation pipe are specified; if the lowest temperature among the water temperature, the engine oil temperature and the ambient temperature is not lower than the preset temperature, it is determined that the diesel engine has not reached the temperature for the Heating condition under which the crankcase ventilation pipe is heated. Since the determination of whether the diesel engine has reached the heating condition is based on multiple temperature parameters such as water temperature, engine oil temperature and ambient temperature, the accuracy of determining whether the heating condition has been achieved can be improved.

Fig. 4 is a schematic structural view of the heating control device for the crankcase ventilation pipe provided by an embodiment of the present application. As shown in Fig. The heating control device 40 of the crankcase ventilation pipe provided by the example includes: a fuel mode judgment module 41, an actual ratio determination module 42, a heating duration determination module 43 and a ventilation pipe heating module 44, wherein:

The fuel mode judging module 41 is used to judge whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel oil, and liquid fuels that are liquid at room temperature except diesel;

The actual ratio determination module 42 is used to obtain the actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in a dual-fuel mode;

A heating duration determining module 43, configured to determine the target heating duration of the crankcase ventilation pipe based on the actual ratio;

The ventilation pipe heating module 44 is used to control the heating element to heat the crankcase ventilation pipe to reach the target heating duration.

Optionally, the fuel mode judging module 41 is specifically used to: obtain the current speed and water temperature of the diesel engine, the water temperature refers to the temperature of the coolant in the water circulation system of the diesel engine; according to the speed of the diesel engine and the water temperature The water temperature is used to determine whether the diesel engine is in dual-fuel mode.

Optionally, the fuel mode judging module 41, when determining whether the diesel engine is in dual-fuel mode according to the speed of the diesel engine and the water temperature, is specifically used to: judge whether the speed of the diesel engine and the water temperature are Reach the trigger condition for starting combustion of the liquid fuel; if it is determined that the trigger condition is reached, then determine that the fuel mode of the diesel engine is a dual-fuel mode; if it is determined that the trigger condition is not met, then determine that the diesel engine’s The fuel mode is pure diesel mode.

Optionally, when the actual ratio determination module 42 obtains the actual ratio of diesel and liquid fuel, it is specifically used to: determine the current working condition area where the diesel engine is located; The actual ratio of diesel and liquid fuel corresponding to the current operating condition area is described, and the first mapping relationship is the mapping relationship between the operating condition area and the ratio of diesel and liquid fuel.

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

Optionally, it also includes a heating condition judging module, configured to: judge whether the diesel engine has reached the temperature of the crankcase before the heating of the crankcase ventilation pipe by the control heating element reaches the target heating time. The heating condition for heating the ventilation pipe; if it is determined that the heating condition is reached, the step of controlling the heating element to heat the crankcase ventilation pipe to reach the target heating time is executed.

Optionally, the heating condition judging module, when judging whether the diesel engine has reached the heating condition for heating the crankcase ventilation pipe, is specifically used to: obtain the current engine oil temperature of the diesel engine and the ambient temperature; if If the highest temperature among the water temperature, the engine 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; if the water temperature, the If the lowest temperature among the engine 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.

Fig. 5 is a block diagram of a controller according to an exemplary embodiment, the device may be as shown in Fig. 5, the controller includes: a memory 51, a processor 52; the memory 51 is used to store instructions executable by the processor memory; the processor 52 is used to run computer programs or instructions, so as to realize the heating control method of the crankcase ventilation pipe provided by any one of the above embodiments.

Among them, the memory 51 is used to store programs. Specifically, the program may include program code, and the program code includes computer operation instructions. The memory 51 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory.

Wherein, the processor 52 may be a central processing unit (Central Processing Unit, referred to as CPU), or a specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or is configured to implement one or more of the embodiments of the present disclosure. multiple integrated circuits.

Optionally, in terms of specific implementation, if the memory 51 and the processor 52 are implemented independently, the memory 51 and the processor 52 may be connected to each other through the bus 53 to complete mutual communication. The bus 53 can be an industry standard architecture (Industry Standard Architecture, referred to as ISA) bus 53, a peripheral component interconnection (Peripheral Component, referred to as PCI) bus 53 or an extended industry standard architecture (Extended Industry Standard Architecture, referred to as EISA) bus 53 wait. The bus 53 can be divided into an address bus 53, a data bus 53, a control bus 53, and the like. For ease of representation, only one thick line is used in FIG. 5 , but it does not mean that there is only one bus 53 or one type of bus 53 .

Optionally, in terms of specific implementation, if the memory 51 and the processor 52 are integrated and implemented on one chip, the memory 51 and the processor 52 may complete communication between the memory 51 and the processor 52 through an internal interface.

A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the controller, the controller can execute the heating control method of the crankcase ventilation pipe of the controller described above.

Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the application, these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional technical means in the technical field not disclosed in the application . The specification and examples are to be considered exemplary only, with a true scope and spirit of the application indicated by the following claims.

It should be understood that the present application is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. a heating control method of crankcase ventilation pipe, is characterized in that, described method comprises: Judging whether the diesel engine is currently in a dual-fuel mode, the fuel in the dual-fuel mode includes diesel, and liquid fuels that are liquid at room temperature except diesel; If it is determined that the diesel engine is in a dual-fuel mode, the actual ratio of diesel and liquid fuel is obtained; Based on the actual ratio, determine the target heating duration of the crankcase ventilation pipe; The heating element is controlled to heat the crankcase ventilation pipe to reach the target heating duration. 2. The method according to claim 1, wherein the judging whether the diesel engine is currently in a dual-fuel mode comprises: Obtain the current rotational 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 rotational speed of the diesel engine and the water temperature. 3. The method according to claim 2, wherein the determining whether the fuel mode of the diesel engine is a dual-fuel mode according to the speed of the diesel engine and the water temperature comprises: Judging whether the speed of the diesel engine and the water temperature meet the trigger conditions for the liquid fuel to start burning; If it is determined that the trigger condition is met, then determine that the fuel mode of the diesel engine is a dual-fuel mode; If it is determined that the trigger condition is not met, it is determined that the fuel mode of the diesel engine is a pure diesel mode. 4. The method according to claim 1, wherein said obtaining the actual proportioning of diesel oil and liquid fuel comprises: determining the working condition area where the diesel engine is currently located; According to the pre-stored first mapping relationship, determine the actual ratio of diesel and liquid fuel corresponding to the current working condition area, the first mapping relationship is the working condition area, and the ratio of diesel and liquid fuel mapping relationship between them. 5. The method according to claim 1, wherein the determining the target heating duration of the crankcase ventilation pipe based on the actual ratio comprises: Based on the pre-stored second mapping relationship, determine the target heating duration corresponding to the actual ratio, the second mapping relationship is the mapping relationship between the ratio of diesel and liquid fuel and the heating duration of the crankcase ventilation pipe , the ratio of diesel and liquid fuel is negatively correlated with the heating time of the crankcase ventilation pipe. 6. The method according to claim 1, further comprising: before the heating of the crankcase ventilation pipe by the control heating element reaches the target heating duration: judging whether the diesel engine has reached the 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 to reach the target heating duration is executed. 7. The method according to claim 2, wherein the judging whether the diesel engine has reached the heating condition for heating the crankcase ventilation pipe comprises: Obtain the engine oil temperature and ambient temperature of the current diesel engine; If the highest temperature among the water temperature, the engine 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; If the lowest temperature among the water temperature, the engine 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. 8. A heating control device for a crankcase ventilation pipe, characterized in that the device comprises: The fuel mode judging module is used to judge whether the diesel engine is currently in a dual-fuel mode, and the fuel in the dual-fuel mode includes diesel oil, and liquid fuels that are liquid at room temperature except diesel; The actual ratio determination module is used to obtain the actual ratio of diesel and liquid fuel if it is determined that the diesel engine is in a dual-fuel mode; A heating duration determination module, configured to determine the target heating duration of the crankcase ventilation pipe based on the actual ratio; The ventilation pipe heating module is used to control the heating element to heat the crankcase ventilation pipe to reach the target heating duration. 9. A controller, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; The processor executes the computer-implemented instructions stored in the memory to implement the method according to any one of claims 1-7. 10. A computer-readable storage medium, characterized in that, computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement any one of claims 1-7 when executed by a processor the method described.

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