CN115013118A - Crankcase pressure control method and device, vehicle and electronic device - Google Patents
Crankcase pressure control method and device, vehicle and electronic device Download PDFInfo
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- CN115013118A CN115013118A CN202210706983.5A CN202210706983A CN115013118A CN 115013118 A CN115013118 A CN 115013118A CN 202210706983 A CN202210706983 A CN 202210706983A CN 115013118 A CN115013118 A CN 115013118A
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- 230000000694 effects Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0005—Crankcase ventilating or breathing with systems regulating the pressure in the carter
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Abstract
The application discloses a pressure control method and device of a crankcase, a vehicle and an electronic device. The method comprises the following steps: acquiring the pressure in a crankcase, acquiring a first pressure, and judging whether the first pressure is greater than or equal to a standard atmospheric pressure; under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through the negative pressure generating device, the pressure in the crankcase is obtained, and a second pressure is obtained; judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; and controlling the crankcase to stop working under the condition that the timing duration exceeds a preset time threshold. Through this application, the problem of uncontrollable crankcase internal pressure among the correlation technique leads to crankcase job stabilization has been solved.
Description
Technical Field
The present disclosure relates to the field of vehicle technologies, and in particular, to a method and an apparatus for controlling pressure of a crankcase, a vehicle, and an electronic apparatus.
Background
With the stricter emission and oil consumption regulations, when engines are developed in the related technologies, the energy-saving and emission-reduction design becomes an important mark for evaluating the technical advancement of the engines, and the hybrid engine has higher efficiency because the hybrid engine works in an optimal efficiency area, so that how to reasonably deal with the higher pressure of a crankcase in the high efficiency area is higher, the reliable operation of the engine is ensured, and the important problem in the design of the hybrid engine is solved. The principle of the hybrid engine is basically the same as that of a normal engine, the piston ring cannot be completely sealed, gas which is blown out by the piston inevitably enters the crankcase, and the pressure inside the crankcase is maintained to be stable through a crankcase ventilation system.
Aiming at the problem that the pressure in the crankcase cannot be controlled in the related technology, so that the work of the crankcase is unstable, an effective solution is not provided at present.
Disclosure of Invention
The application provides a pressure control method and device of a crankcase, a vehicle and an electronic device, and aims to solve the problem that the pressure in the crankcase cannot be controlled in the related technology, so that the crankcase is unstable in work.
According to one aspect of the present application, a method of pressure control of a crankcase is provided. The method comprises the following steps: acquiring the pressure in a crankcase to obtain a first pressure, and judging whether the first pressure is greater than or equal to a standard atmospheric pressure; under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through the negative pressure generating device, the pressure in the crankcase is obtained, and a second pressure is obtained; judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; and controlling the crankcase to stop working under the condition that the timing duration exceeds a preset time threshold.
Alternatively, in a case where the negative pressure generating device is an oil separator, the reducing the pressure in the crankcase by the negative pressure generating device includes: and under the condition that the oil-gas separator is detected to be in a starting state, adjusting the rotating speed of the oil-gas separator from the current rotating speed to a first rotating speed so as to reduce the pressure in the crankcase, wherein the first rotating speed is less than or equal to a rotating speed threshold value, and the first rotating speed is greater than the current rotating speed.
Alternatively, in a case where the negative pressure generating device is an oil separator, the reducing the pressure in the crankcase by the negative pressure generating device includes: under the condition that the oil-gas separator is detected to be in an un-started state, the oil-gas separator is started, the pressure in a crankcase is obtained, and whether the obtained pressure is larger than or equal to the standard atmospheric pressure or not is judged; and under the condition that the obtained pressure is greater than or equal to the standard atmospheric pressure, adjusting the rotating speed of the oil-gas separator to a second rotating speed from the current rotating speed so as to reduce the pressure in the crankcase, wherein the second rotating speed is less than or equal to a rotating speed threshold value, and the second rotating speed is greater than the current rotating speed.
Alternatively, in a case where the negative pressure generating device is a venturi tube, the reducing the pressure in the crankcase by the negative pressure generating device includes: the flow rate of gas in the crankcase is increased by the venturi to reduce the pressure in the crankcase.
Optionally, increasing the flow rate of gas in the crankcase via the venturi comprises: connecting a first interface of the Venturi tube with a crankcase, connecting a second interface of the Venturi tube with an air filter, and connecting a third interface of the Venturi tube with an air inlet manifold; and controlling the pressure difference generated by the second interface and the third interface to be larger than the preset pressure difference so as to take out the gas in the crankcase through the first interface of the Venturi tube.
Optionally, after determining whether the timing duration exceeds the preset time threshold, the method further includes: and under the condition that the timing duration exceeds a preset time threshold, determining that the crankcase has a fault, and sending alarm prompt information.
Optionally, after determining whether the first pressure is greater than or equal to the standard atmospheric pressure, the method further includes: under the condition that the first pressure is smaller than the standard atmospheric pressure, judging whether the first pressure is smaller than a pressure threshold value or not, wherein the pressure threshold value is smaller than the standard atmospheric pressure; in the case that the first pressure is less than the pressure threshold value, the pressure in the crankcase is increased by the negative pressure generating device until the pressure in the crankcase is greater than the pressure threshold value.
According to another aspect of the present application, a pressure control device of a crankcase is provided. The device includes: the acquiring unit is used for acquiring the pressure in the crankcase to obtain a first pressure and judging whether the first pressure is greater than or equal to the standard atmospheric pressure; the timing unit is used for starting timing under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, reducing the pressure in the crankcase through the negative pressure generating device, acquiring the pressure in the crankcase and obtaining a second pressure; the judging unit is used for judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold value under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; and the control unit is used for controlling the crankcase to stop working under the condition that the timing duration exceeds a preset time threshold.
According to another aspect of the embodiments of the present invention, there is also provided a non-volatile storage medium including a stored program, wherein the program controls an apparatus in which the non-volatile storage medium is located to perform a method of pressure control of a crankcase when the program is run.
According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including a processor and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions are operable to perform a method of crankcase pressure control.
Through the application, the following steps are adopted: acquiring the pressure in a crankcase to obtain a first pressure, and judging whether the first pressure is greater than or equal to a standard atmospheric pressure; under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through the negative pressure generating device, the pressure in the crankcase is obtained, and a second pressure is obtained; judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; under the condition that the timing duration exceeds the preset time threshold, the crankcase is controlled to stop working, and the problem that the crankcase cannot work unstably due to the fact that the pressure in the crankcase cannot be controlled in the related technology is solved. Through set up the negative pressure generating device near the crankcase, under the condition that detects the pressure in the crankcase and be higher than standard atmospheric pressure, reduce and then reached the effect that the guarantee crankcase normally worked through negative pressure generating device control crankcase internal pressure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a flow chart of a method of pressure control of a crankcase provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic illustration of gas flow within a crankcase provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic illustration of a venturi and crankcase connection provided in accordance with an embodiment of the present application;
fig. 4 is a schematic diagram of a pressure control device of a crankcase provided according to an embodiment of the application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the application, a method of pressure control of a crankcase is provided.
Fig. 1 is a flowchart of a method for controlling pressure of a crankcase according to an embodiment of the application. As shown in fig. 1, the method comprises the steps of:
step S102, pressure in the crankcase is obtained, first pressure is obtained, and whether the first pressure is larger than or equal to standard atmospheric pressure or not is judged.
Specifically, the pressure in the crankcase is monitored in real time through a pressure sensor on the side face of the crankcase, the first pressure can be the pressure in the crankcase when the negative pressure generating device is not started, and the pressure in the crankcase can cause the internal pressure of the crankcase to be overlarge when the pressure exceeds a standard atmospheric pressure so as to influence the normal work of the crankcase, so that the detected first pressure is uploaded to an electronic control unit of an automobile through the pressure sensor, and the electronic control unit judges whether the first pressure is larger than or equal to the standard atmospheric pressure.
And step S104, when the first pressure is larger than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through the negative pressure generating device, the pressure in the crankcase is obtained, and the second pressure is obtained.
Specifically, when the first pressure exceeds the standard atmospheric pressure, timing is started through the timing device, the negative pressure generating device achieves the purpose of reducing the pressure in the crankcase by providing negative pressure for the inside of the crankcase, the negative pressure generating device can be an active oil-gas separator, the pressure in the crankcase can be reduced by increasing the rotating speed of the oil-gas separator, the negative pressure generating device can also be a Venturi tube, the purpose of reducing the pressure is achieved by increasing the gas flow speed in the crankcase through the Venturi tube, and after the negative pressure generating device is started, the pressure in the crankcase is continuously monitored through the pressure sensor to obtain the second pressure.
And step S106, judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure.
Specifically, after the second pressure is detected, whether the second pressure is greater than or equal to the standard atmospheric pressure or not is judged through the electronic control unit, and when the second pressure is still greater than or equal to the standard atmospheric pressure, whether the time length of the pressure in the crankcase exceeding the standard atmospheric pressure exceeds a preset time threshold or not is detected.
And step S108, controlling the crankcase to stop working under the condition that the timing duration exceeds a preset time threshold.
For example, the preset time threshold is 1 minute, and in the case that the timed time period exceeds 1 minute, it indicates that there is a possibility of a malfunction in the crankcase or a malfunction in the negative pressure generating device, and it is necessary to control the crankcase to stop working and check it.
According to the pressure control method of the crankcase, the first pressure is obtained by obtaining the pressure in the crankcase, and whether the first pressure is larger than or equal to the standard atmospheric pressure is judged; under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through the negative pressure generating device, the pressure in the crankcase is obtained, and a second pressure is obtained; judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; under the condition that the timing duration exceeds the preset time threshold, the crankcase is controlled to stop working, and the problem that the crankcase cannot work unstably due to the fact that the pressure in the crankcase cannot be controlled in the related technology is solved. By arranging the negative pressure generating device near the crankcase, the pressure in the crankcase is controlled to be reduced by the negative pressure generating device under the condition that the pressure in the crankcase is detected to be higher than the standard atmospheric pressure, and the effect of ensuring the normal work of the crankcase is achieved.
Alternatively, in the method for controlling pressure in a crankcase provided in an embodiment of the present application, in a case where the negative pressure generating device is an air-oil separator, reducing pressure in the crankcase by the negative pressure generating device includes: and under the condition that the oil-gas separator is detected to be in a starting state, adjusting the rotating speed of the oil-gas separator from the current rotating speed to a first rotating speed so as to reduce the pressure in the crankcase, wherein the first rotating speed is less than or equal to a rotating speed threshold value, and the first rotating speed is greater than the current rotating speed.
Specifically, whether the oil-gas separator is opened or not is detected through the electronic control unit, if the oil-gas separator is opened, the current rotating speed of the oil-gas separator is adjusted to a first rotating speed, the first rotating speed is larger than the current rotating speed, the rotating speed of the oil-gas separator has an upper limit, when the rotating speed is adjusted to the first rotating speed, whether the first rotating speed exceeds the upper limit or not needs to be noticed, if the first rotating speed exceeds the upper limit, the rotating speed is stopped being adjusted, the rotating speed is increased through controlling the oil-gas separator to conduct forced ventilation on the crankcase, therefore, the pressure in the crankcase is reduced, and the normal work of the crankcase is guaranteed.
It should be noted that fig. 2 is a schematic view of gas flow in a crankcase provided according to an embodiment of the present application. As shown in fig. 2, after being separated by the active oil-gas separator 202, the crankcase gas 201 enters a pipeline between the air filter 203 and the supercharger 204, and participates in combustion again through the intake manifold 205; the active oil-gas separator 202 can control the pressure in the crankcase by adjusting the rotating speed, and the higher the rotating speed is, the larger the negative pressure of the crankcase is; the crankcase pressure sensor 206 monitors the pressure value in the crankcase in real time; a temperature and pressure sensor 207 of the intake manifold 205 monitors the pressure of the gas in the intake manifold in real time; the one-way valve 208 controls the one-way flow of air from the air filter 203 to the engine through a mechanical structure.
Optionally, in the method for controlling pressure of a crankcase, in the case that the negative pressure generating device is the gas-oil separator, reducing the pressure in the crankcase by the negative pressure generating device includes: under the condition that the oil-gas separator is detected to be in an un-started state, the oil-gas separator is started, the pressure in a crankcase is obtained, and whether the obtained pressure is larger than or equal to the standard atmospheric pressure or not is judged; and under the condition that the acquired pressure is greater than or equal to the standard atmospheric pressure, adjusting the rotating speed of the oil-gas separator from the current rotating speed to a second rotating speed so as to reduce the pressure in the crankcase, wherein the second rotating speed is less than or equal to a rotating speed threshold value, and the second rotating speed is greater than the current rotating speed.
Specifically, after the crankcase starts to work, after the pressure in the crankcase is greater than the standard atmospheric pressure, the oil-gas separator is started, the pressure in the crankcase is reduced through forced ventilation by the oil-gas separator, the pressure in the crankcase is detected through the electronic control unit again, and if the pressure at the moment is still greater than the standard atmospheric pressure, the rotating speed of the oil-gas separator is increased, and the pressure in the crankcase is continuously reduced. The pressure in the crankcase is reduced through the oil-gas separator, so that the crankcase can work normally.
The negative pressure source may be a venturi tube, and optionally, in the pressure control method for a crankcase provided in an embodiment of the present application, in a case where the negative pressure generating device is a venturi tube, reducing the pressure in the crankcase by the negative pressure generating device includes: the flow rate of gas in the crankcase is increased by the venturi to reduce the pressure in the crankcase.
Specifically, venturi can produce pressure differential through the gas velocity of flow in the venturi pipeline with higher speed to drive the gaseous outflow in the crankcase, thereby improve the velocity of flow in the crankcase, reach the effect that reduces the pressure in the crankcase.
Optionally, in a pressure control method of a crankcase provided in an embodiment of the present application, increasing a gas flow rate in the crankcase through a venturi includes: connecting a first interface of the Venturi tube with a crankcase, connecting a second interface of the Venturi tube with an air filter, and connecting a third interface of the Venturi tube with an air inlet manifold; and controlling the pressure difference generated by the second interface and the third interface to be larger than the preset pressure difference so as to take out the gas in the crankcase through the first interface of the Venturi tube.
Specifically, fig. 3 is a schematic diagram of a connection relationship between a venturi tube and a crankcase, which is provided according to an embodiment of the application. As shown in fig. 3, the first port 302 may be one port provided between the venturi 301 and the crankcase, the second port 303 may be a port provided between the air filter 203 and the venturi 301, and the third port 304 may be a port provided between the intake manifold 205 and the venturi 301, and the flow rate of the gas in the venturi 301 is increased by a pressure difference between the second port 303 and the third port 304. The gas 201 in the crankcase is thus led out through the first port 302, and the gas 201 in the crankcase is carried away by the gas flow.
Optionally, in the pressure control method of the crankcase provided in the embodiment of the present application, after determining whether the timing duration exceeds the preset time threshold, the method further includes: and under the condition that the timing duration exceeds a preset time threshold, determining that the crankcase has a fault, and sending alarm prompt information.
Specifically, under the condition that the pressure in the crankcase is always higher than the standard atmospheric pressure within the preset time threshold, the situation shows that the negative pressure generating device does not work or the engine of the vehicle has problems at the moment, and at the moment, an alarm prompt message is sent out to prompt a vehicle owner to check the crankcase. The fault of the crankcase can be found in a timing mode by arranging the early warning mechanism, so that potential safety hazards are avoided.
Optionally, in the pressure control method for a crankcase provided in the embodiment of the present application, after determining whether the first pressure is greater than or equal to the standard atmospheric pressure, the method further includes: under the condition that the first pressure is smaller than the standard atmospheric pressure, judging whether the first pressure is smaller than a pressure threshold value or not, wherein the pressure threshold value is smaller than the standard atmospheric pressure; in the case that the first pressure is less than the pressure threshold value, the pressure in the crankcase is increased by the negative pressure generating device until the pressure in the crankcase is greater than the pressure threshold value.
Specifically, the pressure threshold may be a minimum pressure value at which the crankcase can work normally, if the pressure in the crankcase is lower than the pressure threshold, the crankcase may malfunction, and if the negative pressure generating device is an oil-gas separator, the pressure in the crankcase may be increased by reducing the rotation speed of the oil-gas separator. The normal work of the crankcase is ensured by adjusting the pressure in the crankcase.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a pressure control device of a crankcase, and it should be noted that the pressure control device of the crankcase according to the embodiment of the present application may be used to execute the pressure control method for the crankcase according to the embodiment of the present application. The following describes a pressure control device for a crankcase according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a pressure control device of a crankcase according to an embodiment of the application. As shown in fig. 4, the apparatus includes:
the acquiring unit 10 is configured to acquire a pressure in the crankcase, obtain a first pressure, and determine whether the first pressure is greater than or equal to a standard atmospheric pressure.
And a timing unit 20 for starting timing when the first pressure is equal to or higher than the standard atmospheric pressure, and reducing the pressure in the crankcase by the negative pressure generating device to obtain the pressure in the crankcase and obtain the second pressure.
And the judging unit 30 is used for judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold value under the condition that the second pressure is greater than or equal to the standard atmospheric pressure.
And the control unit 40 is used for controlling the crankcase to stop working under the condition that the timing duration exceeds a preset time threshold.
According to the pressure control device of the crankcase provided by the embodiment of the application, the pressure in the crankcase is obtained through the obtaining unit 10, so that a first pressure is obtained, and whether the first pressure is larger than or equal to a standard atmospheric pressure or not is judged; a timing unit 20 for starting timing when the first pressure is greater than or equal to the standard atmospheric pressure, and reducing the pressure in the crankcase by the negative pressure generating device to obtain the pressure in the crankcase and obtain a second pressure; the judging unit 30 judges whether the second pressure is greater than or equal to the standard atmospheric pressure, and judges whether the timing duration exceeds a preset time threshold value under the condition that the second pressure is greater than or equal to the standard atmospheric pressure; the control unit 40 controls the crankcase to stop working under the condition that the timing duration exceeds the preset time threshold, and the problem that the crankcase is unstable due to the fact that the pressure in the crankcase cannot be controlled in the related technology is solved. By arranging the negative pressure generating device near the crankcase, the pressure in the crankcase is controlled to be reduced by the negative pressure generating device under the condition that the pressure in the crankcase is detected to be higher than the standard atmospheric pressure, and the effect of ensuring the normal work of the crankcase is achieved.
Alternatively, in the pressure control device for a crankcase provided in the embodiment of the present application, in a case where the negative pressure generating device is an air-oil separator, the timing unit 20 includes: the first adjusting module is used for adjusting the rotating speed of the oil-gas separator from the current rotating speed to a first rotating speed to reduce the pressure in the crankcase under the condition that the oil-gas separator is detected to be in a starting state, wherein the first rotating speed is smaller than or equal to a rotating speed threshold value, and the first rotating speed is larger than the current rotating speed.
Alternatively, in the pressure control device for a crankcase provided in the embodiment of the present application, in a case where the negative pressure generating device is an air-oil separator, the timing unit 20 further includes: the starting module is used for starting the oil-gas separator under the condition that the oil-gas separator is detected to be in an un-started state, acquiring the pressure in the crankcase, and judging whether the acquired pressure is greater than or equal to the standard atmospheric pressure or not; and the second adjusting module is used for adjusting the rotating speed of the oil-gas separator from the current rotating speed to a second rotating speed under the condition that the obtained pressure is greater than or equal to the standard atmospheric pressure so as to reduce the pressure in the crankcase, wherein the second rotating speed is less than or equal to a rotating speed threshold value, and the second rotating speed is greater than the current rotating speed.
Alternatively, in the pressure control device of the crankcase provided in the embodiment of the present application, in the case where the negative pressure generating device is a venturi tube, the timing unit 20 includes: and the increasing module is used for increasing the gas flow speed in the crankcase through the Venturi tube so as to reduce the pressure in the crankcase.
Optionally, in the pressure control apparatus for a crankcase provided in an embodiment of the present application, the boosting module includes: the setting submodule is used for connecting a first interface of the Venturi tube with a crankcase, connecting a second interface of the Venturi tube with an air filter and connecting a third interface of the Venturi tube with an air inlet manifold; and the control submodule is used for controlling the pressure difference generated by the second interface and the third interface to be larger than the preset pressure difference so as to carry out gas in the crankcase through the first interface of the Venturi tube.
Optionally, in the pressure control device for a crankcase provided in an embodiment of the present application, the device further includes: and the alarm unit is used for determining that the crankcase has a fault and sending alarm prompt information under the condition that the timing duration exceeds a preset time threshold.
Optionally, in the pressure control device for a crankcase provided in an embodiment of the present application, the device further includes: the pressure judging unit is used for judging whether the first pressure is smaller than a pressure threshold value or not under the condition that the first pressure is smaller than the standard atmospheric pressure, wherein the pressure threshold value is smaller than the standard atmospheric pressure; in the case that the first pressure is less than the pressure threshold value, the pressure in the crankcase is increased by the negative pressure generating device until the pressure in the crankcase is greater than the pressure threshold value.
The pressure control device of the crankcase comprises a processor and a memory, the acquiring unit 10, the timing unit 20, the judging unit 30, the control unit 40 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more inner cores can be arranged, and normal work of the crankcase is guaranteed by adjusting inner core parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
The embodiment of the application also provides a nonvolatile storage medium, which comprises a stored program, wherein the program controls the equipment where the nonvolatile storage medium is located to execute a pressure control method of the crankcase when running.
The embodiment of the application also provides an electronic device, which comprises a processor and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions are operable to perform a method of crankcase pressure control. The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method of pressure control of a crankcase, comprising:
acquiring the pressure in a crankcase to obtain a first pressure, and judging whether the first pressure is greater than or equal to a standard atmospheric pressure;
under the condition that the first pressure is larger than or equal to the standard atmospheric pressure, timing is started, the pressure in the crankcase is reduced through a negative pressure generating device, the pressure in the crankcase is obtained, and a second pressure is obtained;
judging whether the second pressure is greater than or equal to the standard atmospheric pressure, and judging whether the timing duration exceeds a preset time threshold under the condition that the second pressure is greater than or equal to the standard atmospheric pressure;
and controlling the crankcase to stop working under the condition that the timing duration exceeds the preset time threshold.
2. The method of claim 1, wherein, in the case where the negative pressure generating device is an oil-gas separator, reducing the pressure within the crankcase by the negative pressure generating device comprises:
under the condition that the oil-gas separator is detected to be in a starting state, the rotating speed of the oil-gas separator is adjusted from the current rotating speed to a first rotating speed so as to reduce the pressure in the crankcase, wherein the first rotating speed is less than or equal to a rotating speed threshold value, and the first rotating speed is greater than the current rotating speed.
3. The method of claim 1, wherein, in the case where the negative pressure generating device is an oil-gas separator, reducing the pressure within the crankcase by the negative pressure generating device comprises:
under the condition that the oil-gas separator is detected to be in an un-started state, the oil-gas separator is started, the pressure in the crankcase is obtained, and whether the obtained pressure is larger than or equal to the standard atmospheric pressure or not is judged;
and under the condition that the acquired pressure is greater than or equal to the standard atmospheric pressure, adjusting the rotation speed of the oil-gas separator from the current rotation speed to a second rotation speed so as to reduce the pressure in the crankcase, wherein the second rotation speed is less than or equal to a rotation speed threshold value, and the second rotation speed is greater than the current rotation speed.
4. The method of claim 1, wherein, where the negative pressure generating device is a venturi, reducing the pressure within the crankcase by the negative pressure generating device comprises:
increasing a flow rate of gas in the crankcase via the venturi to reduce a pressure in the crankcase.
5. The method of claim 4, wherein increasing the flow rate of gas within the crankcase via the venturi comprises:
connecting a first interface of the Venturi tube with the crankcase, connecting a second interface of the Venturi tube with the air filter, and connecting a third interface of the Venturi tube with an air inlet manifold;
and controlling the pressure difference generated by the second interface and the third interface to be larger than a preset pressure difference so as to bring out the gas in the crankcase through the first interface of the Venturi tube.
6. The method of claim 1, wherein after determining whether the timing duration exceeds a preset time threshold, the method further comprises:
and under the condition that the timing duration exceeds the preset time threshold, determining that the crankcase is in fault, and sending alarm prompt information.
7. The method of claim 1, wherein after determining whether the first pressure is greater than or equal to a standard atmospheric pressure, the method further comprises:
in the case that the first pressure is less than the standard atmospheric pressure, determining whether the first pressure is less than a pressure threshold, wherein the pressure threshold is less than the standard atmospheric pressure;
in the case that the first pressure is less than the pressure threshold value, the pressure in the crankcase is increased by the negative pressure generating device until the pressure in the crankcase is greater than the pressure threshold value.
8. A vehicle characterized in that a crankcase of the vehicle employs the pressure control method of the crankcase according to any one of claims 1 to 7.
9. A crankcase pressure control apparatus, comprising:
the device comprises an acquisition unit, a detection unit and a control unit, wherein the acquisition unit is used for acquiring the pressure in a crankcase to obtain a first pressure and judging whether the first pressure is greater than or equal to a standard atmospheric pressure or not;
the timing unit is used for starting timing under the condition that the first pressure is greater than or equal to the standard atmospheric pressure, reducing the pressure in the crankcase through a negative pressure generating device, and acquiring the pressure in the crankcase to obtain a second pressure;
the judging unit is used for judging whether the second pressure is greater than or equal to the standard atmospheric pressure or not and judging whether the timing duration exceeds a preset time threshold or not under the condition that the second pressure is greater than or equal to the standard atmospheric pressure;
and the control unit is used for controlling the crankcase to stop working under the condition that the timing duration exceeds the preset time threshold.
10. An electronic device comprising a processor and a memory, the memory having computer readable instructions stored therein for execution by the processor, wherein the computer readable instructions when executed perform the method of crankcase pressure control according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210706983.5A CN115013118B (en) | 2022-06-21 | 2022-06-21 | Crankcase pressure control method and device, vehicle and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210706983.5A CN115013118B (en) | 2022-06-21 | 2022-06-21 | Crankcase pressure control method and device, vehicle and electronic device |
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| CN115013118A true CN115013118A (en) | 2022-09-06 |
| CN115013118B CN115013118B (en) | 2024-01-05 |
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| CN115013118B (en) | 2024-01-05 |
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