CN110630387A - Method, device and system for switching dual-fuel engine - Google Patents
Method, device and system for switching dual-fuel engine Download PDFInfo
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- CN110630387A CN110630387A CN201910945926.0A CN201910945926A CN110630387A CN 110630387 A CN110630387 A CN 110630387A CN 201910945926 A CN201910945926 A CN 201910945926A CN 110630387 A CN110630387 A CN 110630387A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0613—Switch-over from one fuel to another
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/021—Engine temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a method, a device and a system for switching a dual-fuel engine, wherein the method comprises the following steps: if the switch is in a set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state; if the starting temperature is higher than the first preset temperature, controlling the engine to operate according to a first fuel mode; and if the switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode. The fuel mode of the engine can be freely switched, the switching requirement of a vehicle user can be met, the normal operation of the engine can be ensured, and therefore the safety and the reliability of vehicle driving are improved.
Description
Technical Field
The invention relates to the technical field of vehicle fuel engines, in particular to a method, a device and a system for switching a dual-fuel engine.
Background
With the growing awareness of environmental protection, methanol, also known as methyl hydroxide, is the simplest saturated alcohol, and releases water and carbon dioxide after combustion, a well-known "clean fuel". The methanol has rich resources, good anti-knock property, higher octane value than gasoline, and 50 percent of oxygen content, and is beneficial to improving combustion, so the methanol is popular as a source of vehicle power energy.
Therefore, the engine alternative fuel (such as natural gas, liquefied petroleum gas, methanol, ethanol, biomass fuel, hydrogen, dimethyl ether and the like) is combined with the common fuel such as gasoline and diesel oil to simultaneously provide power energy for the vehicle engine, particularly the dual fuel combining the methanol fuel and the gasoline fuel, so that the emission pollution of the vehicle is greatly reduced, and the environmental protection property is improved.
However, the ignition concentration of methanol is relatively concentrated at low temperature and is limited by the saturated vapor pressure of methanol, the concentration of methanol vapor cannot reach the lowest ignition limit, and meanwhile, the vaporization latent heat of methanol is 7 times that of gasoline, so that the temperature of the methanol vapor is further reduced, and the pure methanol engine has the problems of difficult starting and the like at the temperature of below 10 ℃, so that even a dual-fuel engine combined with the gasoline has the condition of unreasonable use of two modes, and further causes the problems of energy waste, driving safety and the like.
Disclosure of Invention
The invention provides a method, a device and a system for switching a dual-fuel engine, which are used for realizing the free switching of the fuel mode of the engine, meeting the switching requirement of a vehicle user and ensuring the normal operation of the engine, thereby improving the safety and the reliability of vehicle driving.
In a first aspect, an embodiment of the present invention provides a method for switching a dual-fuel engine, including:
if the switch is in a set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state;
if the starting temperature is higher than the first preset temperature, controlling the engine to operate according to a first fuel mode;
and if the switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode.
In one possible design, further comprising: if the switch is in a reset state, the residual quantity of the first fuel is less than the first preset residual quantity;
or the first fuel residual amount is smaller than the first preset residual amount;
the engine is controlled to switch from the first fuel mode to the second fuel mode.
In one possible design, further comprising: and if the switch is not in a reset state and/or the first fuel residual quantity is not less than the first preset residual quantity, controlling the engine to keep the first fuel mode to operate.
In one possible design, further comprising: if the switch is in a reset state, or the starting temperature of the engine is not greater than the first preset temperature when the switch is set; controlling the engine to operate in the second fuel mode.
In one possible design, further comprising: if the switch is in the set state and/or the operating time of the second fuel mode is greater than a time threshold; the engine is controlled to switch from the second fuel mode to the first fuel mode.
In one possible design, further comprising:
and if the switch is not in the set state and/or the operation time of the second fuel mode is not greater than the time threshold, controlling the engine to keep operating in the second fuel mode.
In one possible design, further comprising:
and if the first fuel residual quantity is smaller than a first preset residual quantity, sending a reminding message to a user, and controlling the engine to be switched from a first fuel mode to a second fuel mode.
In one possible design, further comprising: and if the running time of the second fuel mode is greater than the time threshold, sending a reminding message to a user, and controlling the engine to be switched from the second fuel mode to the first fuel mode.
In a second aspect, an embodiment of the present invention provides a device for switching a dual-fuel engine, including:
the detection module is used for detecting whether the starting temperature of the engine is higher than a first preset temperature or not when the switch is in the set state if the switch is in the set state;
the control module is used for controlling the engine to operate according to a first fuel mode if the starting temperature is higher than the first preset temperature;
and the switching module is used for controlling the engine to be switched from the first fuel mode to the second fuel mode if the switch is in a reset state.
In one possible design, further comprising: if the switch is in a reset state, the residual quantity of the first fuel is less than the first preset residual quantity;
or the first fuel residual amount is smaller than the first preset residual amount;
the engine is controlled to switch from the first fuel mode to the second fuel mode.
In one possible design, further comprising:
and if the switch is not in a reset state and/or the first fuel residual quantity is not less than the first preset residual quantity, controlling the engine to keep the first fuel mode to operate.
In one possible design, further comprising:
if the switch is in a reset state, or the starting temperature of the engine is not greater than the first preset temperature when the switch is set; controlling the engine to operate in the second fuel mode.
In one possible design, further comprising:
if the switch is in the set state and/or the operating time of the second fuel mode is greater than a time threshold; the engine is controlled to switch from the second fuel mode to the first fuel mode.
In one possible design, further comprising:
and if the switch is not in the set state and/or the operation time of the second fuel mode is not greater than the time threshold, controlling the engine to keep operating in the second fuel mode.
In one possible design, further comprising:
and if the first fuel residual quantity is smaller than a first preset residual quantity, sending a reminding message to a user, and controlling the engine to be switched from a first fuel mode to a second fuel mode.
In one possible design, further comprising:
and if the running time of the second fuel mode is greater than the time threshold, sending a reminding message to a user, and controlling the engine to be switched from the second fuel mode to the first fuel mode.
In a third aspect, an embodiment of the present invention provides a system for switching a dual-fuel engine, including: the device comprises a memory and a processor, wherein the memory stores executable instructions of the processor; wherein the processor is configured to perform the method of dual fuel engine switching of any of the first aspect via execution of the executable instructions.
In a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, where the program is executed by a processor to implement the method for switching the dual-fuel engine according to any one of the first aspect.
The invention provides a method, a device and a system for switching a dual-fuel engine, wherein the method comprises the following steps: if the switch is in a set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state; if the starting temperature is higher than the first preset temperature, controlling the engine to operate according to a first fuel mode; and if the switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode. The fuel mode of the engine can be freely switched, the switching requirement of a vehicle user can be met, the normal operation of the engine can be ensured, and therefore the safety and the reliability of vehicle driving are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for switching a dual fuel engine according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for switching a dual-fuel engine according to a second embodiment of the present invention;
FIG. 3 is a flowchart of a method for switching a dual-fuel engine according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a reminding interface for switching the dual-fuel engine according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a dual-fuel engine switching device according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a system for switching a dual-fuel engine according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. 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.
The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
With the increasing awareness of environmental protection and energy conservation, the sources of the vehicle fuel are diversified due to the advantages of clean emission, environmental protection and the like of the methanol. At present, a dual-fuel vehicle has two fuel supply systems, one of which supplies natural gas or liquefied petroleum gas, the other supplies other fuel, and the two fuel supply systems supply fuel to a combustion chamber according to a preset proportion and mix and burn in a cylinder. However, how to reasonably use dual fuels to provide power energy for a vehicle by a vehicle user, the problem that not only energy is saved, but also enough power energy is provided for the vehicle is not well solved. Aiming at the technical defects, the invention provides a method, a device and a system for switching a dual-fuel engine, so as to realize free switching of a fuel mode of the engine, meet the switching requirement of a vehicle user and ensure the normal operation of the engine, thereby improving the safety and the reliability of vehicle driving.
The embodiment of the present invention will be described below by taking dual fuels such as methanol and gasoline as an example. However, the dual fuel is not limited to methanol, gasoline, etc., but also includes diesel-compressed natural gas dual fuel, diesel-liquefied petroleum gas dual fuel, etc., and those skilled in the art can specifically define the dual fuel according to actual conditions to achieve better effects.
Fig. 1 is a flowchart of a method for switching a dual-fuel engine according to an embodiment of the present invention, as shown in fig. 1, the method in this embodiment may include:
s101, if the switch is in the set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state.
Specifically, the vehicle dual-fuel switching system can be provided with a switch to realize convenient and flexible operation of a user, and the user experience is improved while the optimal performance index of the engine is considered.
In the embodiment, the switch only has two functions of on-off, the switch is set in advance when being opened, and the switch is correspondingly set to provide methanol as combustion fuel for the engine, namely the engine operates in a methanol fuel mode; when the setting switch is closed, the setting switch is in a reset state, and the setting switch is correspondingly set to provide gasoline for the engine as combustion fuel, namely the engine runs in a gasoline fuel mode.
When the detection switch of the vehicle dual-fuel switching system is in a set state and correspondingly provides methanol for the engine as combustion fuel, whether the starting temperature of the engine is higher than a first preset temperature or not is judged when the detection switch is in the set state. For example, a start temperature of 8 c makes it difficult to start at less than 10 c if the engine is supplied with pure methanol fuel only. The starting temperature may be obtained through a certain logical operation according to the above temperatures, such as the ambient temperature, the water temperature, the intake air temperature, the fuel temperature, etc., so that different starting temperatures are provided according to different actual conditions, and the corresponding first preset temperature may also change, which is not specifically limited in this embodiment, for example, the first preset temperature is 10 ℃.
In an alternative embodiment, the switch not only has an on-off function, but also is provided with at least one gear, for example, 2 gears, which are respectively "0" or "1", wherein "1" is preset to be in a set state, and is correspondingly set to be in a methanol fuel mode operation; when the value is set to '0', the state is reset, and the operation is correspondingly set to be in a gasoline fuel mode.
In this embodiment, the setting state is not specifically limited, so that a person skilled in the art can further limit the setting state according to actual situations to achieve a better effect.
And S102, if the starting temperature is higher than a first preset temperature, controlling the engine to operate according to a first fuel mode.
Specifically, the first fuel may be methanol and the second fuel may be gasoline.
If the switch is in a set state and the setting corresponds to providing methanol for the engine as combustion fuel, if the starting temperature of the engine is detected to be higher than a first preset temperature, for example, 20 ℃ is higher than 10 ℃, it is determined to control the engine to operate according to a first fuel mode, that is, the engine is provided with the methanol fuel.
And S103, if the switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode.
Specifically, with reference to the switch settings corresponding to the above embodiments, the switch may have a set state and a reset state. And when the switch is in a set state and the starting temperature of the engine is higher than a first preset temperature, controlling the engine to operate according to a first fuel mode. And if the detection switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode.
For example, the switch is in a reset state, the engine is converted into a heating value based on the current required torque, and the amount of methanol is gradually reduced and the amount of gasoline is gradually increased according to the heating value of gasoline and the heating value of methanol under the condition that the total heating value meets the requirement until only gasoline fuel provides power energy for the engine.
The embodiment can realize normal starting and operation control of the methanol fuel engine, and can enable a user to flexibly operate by setting the switch, the setting state and the resetting state thereof on the premise of ensuring the normal function of the original methanol fuel engine, so that the methanol fuel mode and the gasoline fuel mode can be freely switched.
In an alternative embodiment, if the switch is in the reset state, and the first remaining amount of fuel is less than a first predetermined remaining amount; or the first fuel residual quantity is smaller than a first preset residual quantity; the engine is controlled to switch from the first fuel mode to the second fuel mode.
For example, the switch is in a reset state, after the engine runs in the methanol fuel mode for a period of time, the residual quantity of the methanol fuel is smaller than a first preset residual quantity, and the subsequent supply of the methanol fuel is predicted to be insufficient, so that the engine is controlled to be switched from the methanol fuel mode to the sufficient gasoline fuel mode.
For another example, the engine is operated in a methanol fuel mode, the residual amount of methanol is detected to be smaller than the first preset residual amount, and the residual amount of methanol fuel is not enough to guarantee the subsequent energy supply, so that the engine is controlled to be switched from the methanol fuel mode to a gasoline fuel mode to guarantee the normal operation of the engine and improve the driving safety. The first preset residual amount may have different set values according to different engine performance or environmental factors, and the embodiment is not limited, and may be, for example, 10% of the total methanol fuel.
Fig. 2 is a flowchart of a method for switching a dual-fuel engine according to a second embodiment of the present invention, as shown in fig. 2, the method in this embodiment may include:
s201, if the switch is in a set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state;
s202, if the starting temperature is higher than a first preset temperature, controlling the engine to operate according to a first fuel mode;
in this embodiment, please refer to the relevant description in step S101 to step S102 in the method shown in fig. 1 for the specific implementation process and technical principle of step S201 to step S202, which is not described herein again.
And S203, if the switch is not in a reset state and/or the first fuel residual quantity is not less than the first preset residual quantity, controlling the engine to keep the first fuel mode to operate.
Specifically, with reference to the switch settings corresponding to the above embodiments, the switch may have a set state and a reset state. When the switch is in a set state and the starting temperature of the engine is higher than a first preset temperature, the engine is controlled to operate according to a first fuel mode, wherein the first preset temperature can be 10 ℃, the first fuel corresponds to methanol fuel, and the first fuel mode is to provide the methanol fuel for the engine.
In this embodiment, if the detection switch is not in the reset state, the engine is controlled to keep operating in the methanol fuel mode. And/or the engine is operated in the methanol fuel mode for a period of time, whether the residual quantity of the methanol fuel is enough is detected, and if the residual quantity of the methanol fuel is not less than a first preset residual quantity, namely the fuel is enough, the engine is controlled to keep operating in the methanol fuel mode, wherein the first preset residual quantity is not limited and can be 10% of the total methanol fuel. The detection switch in this embodiment is not in the reset state, and/or the first remaining amount of fuel is not less than the first predetermined remaining amount, i.e., either one of the detection conditions or both conditions occur simultaneously, and the engine is controlled to remain operating in the methanol fuel mode. According to the embodiment, after one fuel mode is switched, the other fuel mode is automatically switched by judging the relevant state of the current engine, so that the requirement of customer switching is met, and the normal operation of the engine is ensured.
Based on the foregoing embodiments, fig. 3 is a flowchart of a method for switching a dual-fuel engine according to a third embodiment of the present invention, and as shown in fig. 3, the method in this embodiment may further include:
if the switch is in a reset state, or the starting temperature of the engine is not greater than a first preset temperature when the switch is set; the engine is controlled to operate in the second fuel mode.
Specifically, in an alternative embodiment, when the switch is detected to be in the set state, it may be detected whether the switch is in the reset state, the steps are not in sequence, and if the switch is in the reset state, the engine is controlled to operate according to the second fuel mode, for example, the second fuel is gasoline fuel. For example, when the vehicle engine is not started yet, the starting process detection switch is in the reset state, and the engine is controlled to operate in the gasoline fuel mode.
Or when the switch is in a set state, the starting temperature of the engine is not more than a first preset temperature, for example, the starting temperature is 9 ℃, and the first preset temperature is 10 ℃, and the engine is controlled to operate according to a second fuel mode, wherein the second fuel is gasoline fuel. The operation can include a specific starting process, for example, the engine of the xx commercial vehicle can adopt methanol fuel and other fuels except gasoline, if the switch is set, the starting temperature of the engine is detected to be not more than a first preset temperature, for example, 10 ℃ is equal to 10 ℃, then the xx commercial vehicle cannot be started by using the first fuel, namely the methanol fuel, and the engine is controlled to start according to other fuel modes; operation can then continue with methanol fuel. The normal starting and running of the engine with the methanol fuel can be ensured, the user can flexibly operate the engine by setting the setting state and the resetting state of the switch, the dual-fuel free switching is realized, and the driving safety and the reliability are improved.
In an alternative embodiment, the vehicle may be further tested after a certain time while the engine is operating in the second fuel mode (which may include a short time just after start-up) to test whether a switch to the first fuel mode and then operation is required.
If the switch is in the set state and/or the operating time of the second fuel mode is greater than the time threshold; the engine is controlled to switch from the second fuel mode to the first fuel mode.
In this embodiment, if the detection switch is in the set state, the engine is controlled to switch from the second fuel mode to the first fuel mode, where the first fuel is methanol fuel and the second fuel is gasoline fuel.
And/or the engine is operated in the second fuel mode for a time period greater than a time threshold, for example, an operation time of 31 minutes, the time threshold being 30 minutes, the engine is controlled to switch from the second fuel mode to the first fuel mode, i.e., from the gasoline fuel mode to the methanol fuel mode. The detection switch in this embodiment is in the set state and/or the operating time of the second fuel mode is greater than a time threshold, i.e., either or both of these conditions are detected, and the engine is controlled to switch from the gasoline fuel mode to the methanol fuel mode.
The engine utilizes the torque required by the current working condition to convert into a heat value, and the gasoline amount is gradually reduced and the methanol amount is gradually increased under the condition of ensuring that the total heat value meets the requirement according to the gasoline heat value and the methanol heat value until only pure methanol fuel provides power energy for the engine. In one possible embodiment, the time threshold may be obtained by looking up a CURE table based on the starting temperature, with different starting temperatures corresponding to different time thresholds, which may represent the time from the start of the engine operating in the second fuel mode to the satisfaction of the normal operation of the methanol fuel. The CURE can obtain a corresponding output numerical value according to the input one-dimensional array.
And if the switch is not in the set state and/or the operation time of the second fuel mode is not greater than the time threshold value, controlling the engine to keep operating in the second fuel mode.
In this embodiment, if the detection switch is not in the set state, the engine is controlled to keep operating in the second fuel mode, where the second fuel is gasoline fuel.
And/or the engine is operated in the second fuel mode for a time period, but the time period is not greater than a time threshold, such as 11 minutes, and the time threshold is 30 minutes, then the engine is controlled to remain operating in the second fuel mode, wherein the second fuel is gasoline fuel. The detection switch in this embodiment is not in the set state and/or the operating time of the second fuel mode is not greater than the time threshold, i.e., either or both of these conditions are detected, and the engine is controlled to switch from the methanol fuel mode to the gasoline fuel mode.
For example, a yy taxi may use a methanol fuel or a gasoline fuel in the starting process of the engine, as long as the description conditions of the above embodiments are met, and in addition, the yy taxi may be flexibly switched between a methanol fuel mode and a gasoline fuel mode according to actual needs in the running process after starting, so as to ensure normal running of the engine and improve safety and reliability of vehicle driving.
In the embodiment, the dual fuels are flexibly and freely switched by detecting various implementation conditions of the switch in the setting state and the resetting state, so that the requirement of customer switching is met, and the normal operation of the engine is ensured. Thereby improving the safety and reliability of the vehicle driving.
The embodiment is not limited to the above example, and those skilled in the art may select "and/or" in fig. 3 according to specific situations according to actual needs to achieve better effects, which is not described herein again.
In an alternative embodiment, if the first fuel residual quantity is less than the first preset residual quantity, a reminding message is sent to the user, and the engine is controlled to be switched from the first fuel mode to the second fuel mode.
Or if the running time of the second fuel mode is larger than the time threshold, sending a reminding message to a user, and controlling the engine to be switched from the second fuel mode to the first fuel mode. Wherein the reminding message can comprise any one or more of voice, text and image.
Specifically, actively reminding a user of mode switching according to the state of the current working condition of the engine, for example, reminding the user of methanol fuel filling or switching to gasoline fuel mode operation if the current residual amount of methanol fuel is less than a first preset residual amount when the methanol fuel mode operation is performed; for another example, after the operation is performed in the gasoline fuel mode, when the operation time exceeds a time threshold, a reminding message is sent to the user, and the switching of the methanol fuel mode is recommended; the reminding message comprises any one or more of voice, characters and images. Referring to fig. 4, fig. 4 is a schematic diagram of a reminding interface for switching a dual-fuel engine according to a third embodiment of the present invention. The reminding message CAN be transmitted through a hard wire or a CAN (Controller Area Network) message, and CAN be displayed for a user on an interactive interface or a touch screen after being read, so that the user CAN perform interactive operation.
The present embodiment can automatically identify the current working condition and the engine operating state through a vehicle dual-fuel switching system including an ECU (Electronic Control Unit), and when a certain preset condition is met, the user can perform mode switching by sending a warning message to the user, thereby ensuring the safety and reliability of the vehicle engine operation.
Fig. 5 is a schematic structural diagram of a device for switching a dual-fuel engine according to a fourth embodiment of the present invention, and as shown in fig. 5, the device for switching a dual-fuel engine according to the present embodiment may include:
the detection module 31 is configured to detect whether the starting temperature of the engine is greater than a first preset temperature when the switch is in the set state if the switch is in the set state;
the control module 32 is used for controlling the engine to operate according to a first fuel mode if the starting temperature is higher than a first preset temperature;
and a switching module 33, configured to control the engine to switch from the first fuel mode to the second fuel mode if the switch is in the reset state.
In an optional embodiment, further comprising: if the switch is in a reset state, the first fuel residual quantity is smaller than a first preset residual quantity;
or the first fuel residual quantity is smaller than a first preset residual quantity;
the engine is controlled to switch from the first fuel mode to the second fuel mode.
In an optional embodiment, further comprising:
and if the switch is not in the reset state and/or the first fuel residual quantity is not less than the first preset residual quantity, controlling the engine to keep the first fuel mode to operate.
In an optional embodiment, further comprising:
if the switch is in a reset state, or the starting temperature of the engine is not greater than a first preset temperature when the switch is set; the engine is controlled to operate in the second fuel mode.
In an optional embodiment, further comprising:
if the switch is in the set state and/or the operating time of the second fuel mode is greater than the time threshold; the engine is controlled to switch from the second fuel mode to the first fuel mode.
In an optional embodiment, further comprising:
and if the switch is not in the set state and/or the operation time of the second fuel mode is not greater than the time threshold value, controlling the engine to keep operating in the second fuel mode.
In an optional embodiment, further comprising:
and if the first fuel residual quantity is smaller than the first preset residual quantity, sending a reminding message to a user, and controlling the engine to be switched from the first fuel mode to the second fuel mode.
In an optional embodiment, further comprising:
and if the running time of the second fuel mode is greater than the time threshold, sending a reminding message to a user, and controlling the engine to be switched from the second fuel mode to the first fuel mode.
The device for switching the dual-fuel engine of the present embodiment may implement the technical solutions in the methods shown in fig. 1 to 3, and the specific implementation processes and technical principles thereof refer to the related descriptions in the methods shown in fig. 1 to 3, and are not described herein again.
Fig. 6 is a schematic structural diagram of a system for switching a dual-fuel engine according to a fifth embodiment of the present invention, and as shown in fig. 6, the system 40 for switching a dual-fuel engine according to this embodiment may include: a processor 41 and a memory 42.
A memory 42 for storing computer programs (e.g., applications, functional modules, etc. that implement the above-described method of dual-fuel engine switching), computer instructions, etc.;
the computer programs, computer instructions, etc. described above may be stored in one or more memories 42 in partitions. And the above-mentioned computer program, computer instructions, data, etc. can be called by the processor 41.
A processor 41 for executing the computer program stored in the memory 42 to implement the steps of the method according to the above embodiments.
Reference may be made in particular to the description relating to the preceding method embodiment.
The processor 41 and the memory 42 may be separate structures or may be integrated structures integrated together. When the processor 41 and the memory 42 are separate structures, the memory 42 and the processor 41 may be coupled by a bus 43.
The server in this embodiment may execute the technical solutions in the methods shown in fig. 1 to fig. 3, and the specific implementation processes and technical principles thereof refer to the relevant descriptions in the methods shown in fig. 1 to fig. 3, which are not described herein again.
In addition, embodiments of the present application further provide a computer-readable storage medium, in which computer-executable instructions are stored, and when at least one processor of the user equipment executes the computer-executable instructions, the user equipment performs the above-mentioned various possible methods.
Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in a communication device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A method of dual fuel engine switching, comprising:
if the switch is in a set state, detecting whether the starting temperature of the engine is higher than a first preset temperature when the switch is in the set state;
if the starting temperature is higher than the first preset temperature, controlling the engine to operate according to a first fuel mode;
and if the switch is in a reset state, controlling the engine to be switched from the first fuel mode to the second fuel mode.
2. The method of claim 1, further comprising:
if the switch is in a reset state, the residual quantity of the first fuel is less than a first preset residual quantity;
or the first fuel residual amount is smaller than the first preset residual amount;
the engine is controlled to switch from the first fuel mode to the second fuel mode.
3. The method of claim 1, further comprising:
and if the switch is not in a reset state and/or the first fuel residual quantity is not less than a first preset residual quantity, controlling the engine to keep the first fuel mode to operate.
4. The method of claim 1, further comprising:
if the switch is in a reset state, or the starting temperature of the engine is not greater than the first preset temperature when the switch is set; controlling the engine to operate in the second fuel mode.
5. The method of claim 4, further comprising:
if the switch is in the set state and/or the operating time of the second fuel mode is greater than a time threshold; the engine is controlled to switch from the second fuel mode to the first fuel mode.
6. The method of claim 5, further comprising:
and if the switch is not in the set state and/or the operation time of the second fuel mode is not greater than the time threshold, controlling the engine to keep operating in the second fuel mode.
7. The method of claim 2 or 3, further comprising:
and if the first fuel residual quantity is smaller than the first preset residual quantity, sending a reminding message to a user, and controlling the engine to be switched from a first fuel mode to a second fuel mode.
8. The method of claim 5 or 6, further comprising:
and if the running time of the second fuel mode is greater than the time threshold, sending a reminding message to a user, and controlling the engine to be switched from the second fuel mode to the first fuel mode.
9. A dual fuel engine switching apparatus, comprising:
the detection module is used for detecting whether the starting temperature of the engine is higher than a first preset temperature or not when the switch is in the set state if the switch is in the set state;
the control module is used for controlling the engine to operate according to a first fuel mode if the starting temperature is higher than the first preset temperature;
and the switching module is used for controlling the engine to be switched from the first fuel mode to the second fuel mode if the switch is in a reset state.
10. A system for dual fuel engine switching, comprising: the device comprises a memory and a processor, wherein the memory stores executable instructions of the processor; wherein the processor is configured to perform the method of dual fuel engine switching of any of claims 1-8 via execution of the executable instructions.
11. A computer readable storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements a method for dual fuel engine switching as claimed in any one of claims 1-8.
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| CN201910945926.0A CN110630387A (en) | 2019-09-30 | 2019-09-30 | Method, device and system for switching dual-fuel engine |
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Application publication date: 20191231 |