CN108331668A - Oil-gas switch method and system - Google Patents
Oil-gas switch method and system Download PDFInfo
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- CN108331668A CN108331668A CN201810130438.XA CN201810130438A CN108331668A CN 108331668 A CN108331668 A CN 108331668A CN 201810130438 A CN201810130438 A CN 201810130438A CN 108331668 A CN108331668 A CN 108331668A
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- automobile
- state parameter
- switching condition
- running state
- oil
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Classifications
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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
- F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
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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
- F02D19/0639—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 characterised by the type of fuels
- F02D19/0642—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 characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—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 characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
-
- 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
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/604—Engine control mode selected by driver, e.g. to manually start particle filter regeneration or to select driving style
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The embodiment of the present invention proposes a kind of oil-gas switch method and system, is related to motor vehicle fuel control technology field.This method includes：Judge whether the first running state parameter meets the first switching condition.When the first running state parameter the first switching condition of satisfaction, judge whether the second running state parameter meets the second switching condition.When the second running state parameter the second switching condition of satisfaction, automobile is switched into CNG patterns by gasoline mode.When the second running state parameter is unsatisfactory for the second switching condition, continues to execute and the step of whether the first running state parameter meets the first switching condition judged.A kind of oil-gas switch method and system that the embodiment of the present invention is provided, reduce the frequency of driver's manual switching motor vehicle fuel pattern, reduce the driving fatigue sense of driver, increase the service life of oil-gas change-over switch, improve drive safety.
Description
Technical field
The present invention relates to motor vehicle fuel control technology fields, in particular to a kind of oil-gas switch method and system.
Background technology
Currently, superior with emission performance using natural gas as the dual-fuel automobile of main fuel, use cost is low, economic effect
The features such as good, to be widely used in the public transit system in China.
But since the startability of natural gas is poor, existing dual-fuel automobile is typically to start under gasoline state,
Running car is normal, and after meeting certain condition, and the fuel mode of the manual switching automobile of driver is travelled with CNG patterns.
But driver switches the fuel mode of automobile each time, is required for Manual press oil-gas switch to switch, increases the driving of user
Feeling of fatigue.
Invention content
The purpose of the present invention is to provide a kind of oil-gas switch methods, and which reduce driver's manual switching motor vehicle fuel moulds
The frequency of formula reduces the driving fatigue sense of driver, increases the service life of oil-gas change-over switch, improve driving safety
Property.
Another object of the present invention is to provide a kind of oil-gas switch systems, and which reduce the combustions of driver's manual switching automobile
The frequency of material pattern reduces the driving fatigue sense of driver, increases the service life of oil-gas change-over switch, improves driving
Safety.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows：
An embodiment of the present invention provides a kind of oil-gas switch method, the method includes：Judge the first running state parameter
Whether first switching condition is met, wherein first running state parameter is described in automobile detects when in gasoline mode
The operating status of automobile obtains.When first running state parameter meets first switching condition, the second operation shape is judged
Whether state parameter meets the second switching condition, wherein second running state parameter is described in detection after the first preset time
The operating status of automobile obtains.When second running state parameter meets second switching condition, by the automobile by institute
It states gasoline mode and switches to CNG patterns.When second running state parameter is unsatisfactory for second switching condition, continue to execute
It is described that the step of whether the first running state parameter meets the first switching condition judged.
Further, first switching condition includes：The fuel shift switch of the automobile is in CNG grades, the vapour
The engine speed of vehicle be more than the first preset value, the automobile intake manifold pressure be less than the second preset value and, the vapour
The engine water temperature of vehicle is more than third preset value.
Further, second switching condition includes：The combustion gas gas rail pressure power of the automobile is more than the 4th preset value.
Further, the method further includes：It is travelled when the automobile switches to the CNG patterns, detects the automobile
Operating status and obtain third state parameter, judge whether the third state parameter meets third switching condition.When described
Third state parameter meets the third switching condition, and the automobile is switched to gasoline mode traveling.
Further, the third switching condition is that the fuel shift switch of the automobile is in gasoline shelves, the automobile
Injection pressure difference be less than the 5th preset value, the engine speed of the automobile is less than the combustion gas of the 6th preset value and the automobile
At least one of system jam.
The embodiment of the present invention additionally provides a kind of oil-gas switch system, the system comprises：First detection module is used for vapour
Vehicle detects the operating status of the automobile in gasoline mode and obtains the first running state parameter.Second detection module, is used for
The automobile detects the operating status of the automobile in gasoline mode and obtains the second running state parameter.Determination module is used
Whether meet the first switching condition in judgement first running state parameter, and for judging second running state parameter
Whether second switching condition is met.Handover module, for according to the judgement of the determination module as a result, selectivity by the vapour
Vehicle switches to CNG patterns or gasoline mode traveling, wherein meets when the judgement result characterizes first running state parameter
First switching condition and second running state parameter meet second switching condition, and the handover module will be described
Automobile switches to CNG patterns traveling.
Further, first switching condition includes：The fuel shift switch of the automobile is in CNG grades, the vapour
The engine speed of vehicle be more than the first preset value, the automobile intake manifold pressure be less than the second preset value and, the vapour
The engine water temperature of vehicle is more than third preset value.
Further, second switching condition includes：The combustion gas gas rail pressure power of the automobile is more than the 4th preset value.
Further, the system also includes：Third detection module is detected for the automobile in the CNG patterns
The operating status of the automobile simultaneously obtains third running state parameter.The determination module is additionally operable to judge the third operation shape
Whether state parameter meets third switching condition.Wherein, meet institute when the judgement result characterizes the third running state parameter
Third switching condition is stated, the automobile is switched to gasoline mode and travelled by the handover module.
Further, the third switching condition is that the fuel shift switch of the automobile is in gasoline shelves, the automobile
Injection pressure difference be less than the 5th preset value, the engine speed of the automobile is less than the combustion gas of the 6th preset value and the automobile
At least one of system jam.
Compared with the existing technology, the embodiment of the present invention has the advantages that：
A kind of oil-gas switch method and system provided in an embodiment of the present invention work as vapour by detecting the operating status of automobile
After vehicle reaches preset condition, automobile is automatically converted to CNG patterns, reduces the frequency of driver's manual switching motor vehicle fuel pattern
Rate reduces the driving fatigue sense of driver, increases the service life of oil-gas change-over switch, while reducing driver in gasoline
Pattern when driving Manual press oil-gas change-over switch when visual field the case where leaving in front of running car occur, improve driving safety
Property.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of flow chart for the oil-gas switch method that first embodiment of the invention is provided；
Fig. 2 shows another flow charts for the oil-gas switch method that first embodiment of the invention is provided；
Fig. 3 shows a kind of structure diagram for the oil-gas switch system that second embodiment of the invention is provided；
Fig. 4 shows another structure diagram for the oil-gas switch system that second embodiment of the invention is provided.
In figure：10- oil-gas switch systems；100- first detection modules；The second detection modules of 200-；300- thirds detect mould
Block；400- determination modules；500- handover modules.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Below in conjunction with the accompanying drawings, it elaborates to some embodiments of the present invention.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
First embodiment：
Referring to Fig. 1, a kind of flow chart for the oil-gas switch method that Fig. 1 is provided by first embodiment of the invention.It is described
Oil-gas switch method is mainly used in automobile.In the present embodiment, the oil-gas switch method may comprise steps of：
S100 travels automobile with gasoline mode.
The automobile with gasoline mode when driving, gasoline ECU by FP Fuel Pump Relay control fuel oil pump work, by gasoline
It is pumped into fuel pipe from fuel tank, enters oily rail through fuel oil filter, gasoline ECU controls vapour according to the operating status of the automobile
Oil burner nozzle sprays quantitative fuel oil, supply engine work into inlet manifold；At this point, combustion gas ECU starts work.Meanwhile institute
It states automobile on startup, operation a period of time warming-up is started with gasoline mode, to keep gas supply system in shape,
Avoid causing because CNG patterns are used for a long time and travel the automobile oil product change caused by the long-term pause use of petrol system
The problems such as matter, pipeline aging, petrol jet block, it is thus also avoided that Fuel switching is carried out under out of season operating mode may be to hair
Impact damage caused by motivation.
S200 detects the operating status of automobile and obtains the first running state parameter.
In the present embodiment, the automobile monitors the operation of the automobile in real time under the operating status of gasoline mode
State, and obtain the first running state parameter, wherein first running state parameter can include but is not limited to be the vapour
The engine speed of vehicle, the intake manifold pressure of the automobile, the engine water temperature of the automobile, the automobile engine be
The fuel shift switch of no failure and the automobile is placed in CNG grades of either gasoline shelves.
S300, judges whether the first running state parameter meets the first switching condition.
In the present embodiment, the automobile cuts first running state parameter with first after completing step S200
The condition of changing compares, and judges whether first running state parameter meets first switching condition.
When the judging result, which characterizes first running state parameter, meets first switching condition, step is executed
S400；When the judging result, which characterizes first running state parameter, is unsatisfactory for first switching condition, step is executed
S100。
Preferably as a kind of embodiment, first switching condition can include but is not limited to be the automobile
Fuel shift switch be in CNG grades, the engine speed of the automobile be more than the inlet manifold pressure of the first preset value, the automobile
Power is less than the second preset value and the engine water temperature of the automobile is more than third preset value.
Preferably as a kind of embodiment, first preset value can be 1600r/min, second preset value
Can be 80kPa, the third preset value can be 60 DEG C.
Meanwhile it is worth noting that, when the automobile is in use gasoline mode startup, in first operating status,
The combustion gas ECU automatically considers the fuel shift switch and is in CNG grades.Also, first preset value, described second are preset
Value and the third preset value may be arranged as other values, as long as so that the automobile is disclosure satisfy that switches to CNG patterns
State.
S400 detects the operating status of automobile and obtains the second running state parameter.
In the present embodiment, after first operating status meets first switching condition, the combustion gas ECU controls
High-pressure solenoid valve opens fuel gas bottle, and the combustion gas ECU detects the operating status of the automobile and obtains the second running state parameter.
Preferably as a kind of embodiment, second operating status may include the detection after the first preset time
The pressure of combustion gas gas rail.
Preferably as a kind of embodiment, first preset time could be provided as 2s.
S500, judges whether the second running state parameter meets the second switching condition.
In the present embodiment, after the second running state parameter that the automobile is obtained by step S400, by described second
Running state parameter judges whether second running state parameter meets second switching compared with the second switching condition
Condition.
Wherein, when second operating status meets second switching condition, step S600 is executed；When described second
When operating status is unsatisfactory for second switching condition, step S100, while combustion gas ECU record characterization fuel gas bottles are executed
Sky, CNG exhaust, and the status indicator lamp fast blink of the tolerance display switch of the automobile is to remind driver that CNG exhausts.
Preferably as a kind of embodiment, in the present embodiment, second switching condition may include the automobile
Combustion gas gas rail pressure power be more than the 4th preset value,
It is preferred that as an implementation, in the present embodiment, the 4th preset value could be provided as
180kPa。
Automobile is switched and is travelled with CNG patterns by S600.
In the present embodiment, after the automobile meets first switching condition and meets second switching condition,
The automobile is switched to CNG patterns traveling by the combustion gas ECU.At this point, the high pressure in pressure reducer is opened in the combustion gas ECU controls
Solenoid valve, the high pressure gas in gas cylinder enters pressure reducer by pressure duct, after pressure reducer is depressured, becomes low-pressure gas from subtracting
Depressor exports, and combustion gas gas rail is entered after gas filter filters, and the combustion gas ECU drivings pressure reducer solenoid valve opens combustion gas
Nozzle sprays quantitative combustion gas into inlet manifold, while combustion gas ECU intervenes fuel feeding, and the combustion gas ECU is supplied to oil pump is connected on
Relay coil power supply in oily circuit, cuts off fuel feeding circuit, Oil pump electrical machinery is stopped, fuel cut-off indirectly.
By above-mentioned design, the oil-gas switch method that the present embodiment is provided is detecting the automobile satisfaction with CNG moulds
When formula running automobile, the automobile is automatically switched into CNG patterns traveling, reduces automobile described in driver's manual switching
The frequency of fuel mode reduces the driving fatigue sense of driver, increases the service life of oil-gas change-over switch, improve and drive
Sail safety.
Referring to Fig. 2, another flow chart for the oil-gas switch method that Fig. 2 is provided by first embodiment of the invention.
In the present embodiment, the step of oil-gas switch method, can also include：
Step S600 travels automobile with CNG patterns.
In the present embodiment, when the automobile switches to CNG patterns traveling by the oil-gas switch method from gasoline mode
Afterwards, traveling is kept.
Step S700 detects the operating status of automobile and obtains third running state parameter.
In the present embodiment, the automobile monitors the operation shape of the automobile in real time under the operating status of CNG patterns
State, and obtain third running state parameter, wherein the third running state parameter can include but is not limited to be the automobile
Engine speed, the injection pressure difference of the automobile, the engine water temperature of the automobile, the automobile engine whether therefore
The fuel shift switch of barrier and the automobile is placed in CNG grades of either gasoline shelves.
Step S800, judges whether third running state parameter meets third switching condition.
In the present embodiment, the automobile cuts the third running state parameter with third after completing step S700
The condition of changing compares, and judges whether the third running state parameter meets the third switching condition.
When the judging result, which characterizes the third running state parameter, meets the third switching condition, step is executed
S100；When the judging result, which characterizes the third running state parameter, is unsatisfactory for the third switching condition, step is executed
S600。
Preferably as a kind of embodiment, the third switching condition can include but is not limited to be the automobile
Fuel shift switch is in gasoline shelves, the injection pressure difference of the automobile is less than the 5th preset value, the engine of the automobile turns
The gas burning system that speed is less than the 6th preset value and the automobile at least one of breaks down.
Preferably as a kind of embodiment, the 5th preset value can be 150kPa, and the 6th preset value can be with
It is 200r/min.
Meanwhile as an implementation, when the injection pressure difference is less than five preset value, the combustion gas
ECU record characterizations CNG exhausts；When the engine speed is less than six preset value, the combustion gas ECU records characterization institute
State engine misses；When the gas burning system breaks down, the combustion gas ECU records characterize the gas burning system and event occur
Barrier.
Meanwhile in other embodiments of the invention, the combustion gas ECU can also connect warning device, when the combustion gas
When ECU record characterizations CNG exhausts, the warning device sends out the first alarm signal to remind driver that CNG exhausts, and please increases in time
Add CNG；When combustion gas ECU records, which characterize the gas burning system, to break down, the warning device sends out the second alarm signal
Number to remind described in driver gas burning system to break down, please overhaul in time.
Step S100 travels automobile with gasoline mode.
In the present embodiment, meet the third switching when the result that step S800 judges characterizes the third state parameter
When condition, the automobile is switched into gasoline mode traveling.
Based on above-mentioned design, oil-gas switch method that the present embodiment is provided is detecting that the automobile is unsatisfactory for CNG
When pattern running automobile, automobile is automatically switched into gasoline mode traveling, reduces automobile described in driver's manual switching
The frequency of fuel mode reduces the driving fatigue sense of driver, increases the service life of oil-gas change-over switch, improve and drive
Sail safety.
Second embodiment：
The oil-gas switch system 10 that the present embodiment is provided is made in combination with the oil-gas switch method that first embodiment is provided
It illustrates.
In order to briefly describe, the present embodiment does not refer to place, can refer to first embodiment.
Referring to Fig. 3, a kind of structure diagram for the oil-gas switch system 10 that Fig. 3 is provided by second embodiment of the invention.
The oil-gas switch system 10 is applied to dual-fuel automobile.In the present embodiment, the oil-gas switch system 10 may include
One detection module 100, the second detection module 200, determination module 400 and handover module 500.
The first detection module 100 can be used for automobile and detect the operating status of the automobile in gasoline mode and obtain
Obtain the first running state parameter.
In embodiments of the present invention, the first detection module 100 can be used for executing step S200.
Second detection module 200 can be used for the operating status that the automobile detects the automobile in gasoline mode
And obtain the second running state parameter.
In embodiments of the present invention, second detection module 200 can be used for executing step S400.
The determination module 400 can be used for judging whether first running state parameter meets the first switching condition,
And it can be used for judging whether second running state parameter meets the second switching condition.
In embodiments of the present invention, the determination module 400 can be used for executing step S300 and step S500.
The handover module 500 can be used for the judgement according to the determination module 400 as a result, selectivity by the vapour
Vehicle switches to CNG patterns or gasoline mode traveling, wherein meets when the judgement result characterizes first running state parameter
First switching condition and second running state parameter meet second switching condition, and the handover module 500 will
The automobile switches to CNG patterns traveling.
In embodiments of the present invention, the determination module 400 can be used for executing step S100 and step S600.
Referring to Fig. 4, another structural frames for the oil-gas switch system 10 that Fig. 4 is provided by second embodiment of the invention
Figure.In the present embodiment, the oil-gas switch system 10 can also include third detection module 300, the third detection module
300 detect the operating status of the automobile in the CNG patterns and obtain third running state parameter for the automobile.
In embodiments of the present invention, the third detection module 300 can be used for executing step S700.
Meanwhile in the present embodiment, the determination module 400 can be also used for judging that the third running state parameter is
No to meet third switching condition, the determination module 400 can be also used for executing step S800.
In conclusion the oil-gas switch method and system that the embodiment of the present invention is provided, are applied to automobile, the method packet
It includes：Judge whether the first running state parameter meets the first switching condition, wherein first running state parameter is that automobile exists
The operating status that the automobile is detected when in gasoline mode obtains；It is cut when first running state parameter meets described first
Condition is changed, judges whether the second running state parameter meets the second switching condition, wherein second running state parameter is the
The operating status that the automobile is detected after one preset time obtains；When second running state parameter meets second switching
The automobile is switched to CNG patterns by condition by the gasoline mode；When second running state parameter is unsatisfactory for described
Two switching conditions continue to execute the step of whether the first running state parameter of the judgement meets the first switching condition.The present invention
A kind of oil-gas switch method and system that embodiment provides, by detecting the operating status of automobile, when automobile reaches preset condition
Afterwards, automobile is automatically converted to CNG patterns, reduces the frequency of driver's manual switching motor vehicle fuel pattern, reduces driver
Driving fatigue sense, increase the service life of oil-gas change-over switch, while it is manual when driving in gasoline mode to reduce driver
The case where visual field is left in front of running car when pressing oil-gas change-over switch occurs, and improves drive safety.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of oil-gas switch method, which is characterized in that the method includes：
Judge whether the first running state parameter meets the first switching condition, wherein first running state parameter is automobile
The operating status that the automobile is detected when in gasoline mode obtains；
When first running state parameter meets first switching condition, judge whether the second running state parameter meets
Two switching conditions, wherein second running state parameter obtains to detect the operating status of the automobile after the first preset time
；
When second running state parameter meets second switching condition, the automobile is switched to by the gasoline mode
CNG patterns；
When second running state parameter is unsatisfactory for second switching condition, the first operating status of the judgement is continued to execute
The step of whether parameter meets the first switching condition.
2. oil-gas switch method as described in claim 1, which is characterized in that first switching condition includes：
The fuel shift switch of the automobile is in CNG grades；
The engine speed of the automobile is more than the first preset value；
The intake manifold pressure of the automobile is less than the second preset value；And
The engine water temperature of the automobile is more than third preset value.
3. oil-gas switch method as described in claim 1, which is characterized in that second switching condition includes：The automobile
Combustion gas gas rail pressure power be more than the 4th preset value.
4. oil-gas switch method as described in claim 1, which is characterized in that the method further includes：
It is travelled when the automobile switches to the CNG patterns, detects the operating status of the automobile and obtain third state parameter,
Judge whether the third state parameter meets third switching condition；
When the third state parameter meets the third switching condition, the automobile, which is switched to gasoline mode, to travel.
5. oil-gas switch method as claimed in claim 4, which is characterized in that the third switching condition is the combustion of the automobile
Material change-over switch be in gasoline shelves, the automobile injection pressure difference less than the 5th preset value, the automobile engine speed
Gas burning system less than the 6th preset value and the automobile at least one of breaks down.
6. a kind of oil-gas switch system, which is characterized in that the system comprises：
First detection module detects the operating status of the automobile in gasoline mode for automobile and obtains the first operating status
Parameter；
Second detection module detects the operating status of the automobile in gasoline mode for the automobile and obtains the second operation
State parameter；
Determination module, for judging whether first running state parameter meets the first switching condition, and it is described for judging
Whether the second running state parameter meets the second switching condition；
Handover module, for according to the determination module judgement as a result, selectivity the automobile is switched to CNG patterns or
Gasoline mode travels, wherein meets first switching condition when the judgement result characterizes first running state parameter
And second running state parameter meets second switching condition, the automobile is switched to CNG moulds by the handover module
Formula travels.
7. oil-gas switch system as claimed in claim 6, which is characterized in that first switching condition includes：
The fuel shift switch of the automobile is in CNG grades；
The engine speed of the automobile is more than the first preset value；
The intake manifold pressure of the automobile is less than the second preset value；And
The engine water temperature of the automobile is more than third preset value.
8. oil-gas switch system as claimed in claim 6, which is characterized in that second switching condition includes：The automobile
Combustion gas gas rail pressure power be more than the 4th preset value.
9. oil-gas switch system as claimed in claim 6, which is characterized in that the system also includes：
Third detection module detects the operating status of the automobile in the CNG patterns for the automobile and obtains third
Running state parameter；
The determination module is additionally operable to judge whether the third running state parameter meets third switching condition；
Wherein, meet the third switching condition, the switching when the judgement result characterizes the third running state parameter
The automobile is switched to gasoline mode traveling by module.
10. oil-gas switch system as claimed in claim 9, which is characterized in that the third switching condition is the automobile
Fuel shift switch is in gasoline shelves, the injection pressure difference of the automobile is less than the 5th preset value, the engine of the automobile turns
The gas burning system that speed is less than the 6th preset value and the automobile at least one of breaks down.
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| CN201810130438.XA CN108331668A (en) | 2018-02-08 | 2018-02-08 | Oil-gas switch method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810130438.XA CN108331668A (en) | 2018-02-08 | 2018-02-08 | Oil-gas switch method and system |
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| CN108331668A true CN108331668A (en) | 2018-07-27 |
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| CN201810130438.XA Pending CN108331668A (en) | 2018-02-08 | 2018-02-08 | Oil-gas switch method and system |
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Application publication date: 20180727 |