CN109681334A - Control method, device and the vehicle of dual fuel engine start and stop - Google Patents
Control method, device and the vehicle of dual fuel engine start and stop Download PDFInfo
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- CN109681334A CN109681334A CN201811305108.6A CN201811305108A CN109681334A CN 109681334 A CN109681334 A CN 109681334A CN 201811305108 A CN201811305108 A CN 201811305108A CN 109681334 A CN109681334 A CN 109681334A
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- downtime
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- 239000000446 fuel Substances 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 62
- 230000009977 dual effect Effects 0.000 title claims abstract description 41
- 239000002826 coolant Substances 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000002123 temporal effect Effects 0.000 claims description 18
- 230000008450 motivation Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 54
- 239000003502 gasoline Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- 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
- F02D2200/04—Engine intake system parameters
- F02D2200/0414—Air temperature
Abstract
The present invention provides control method, device and the vehicles of a kind of dual fuel engine start and stop; it is related to the technical field of automobile; this method comprises: when monitoring that vehicle issues stopping signal to engine; the coolant temperature parameter and intake air temperature parameter of present engine are obtained, and calculate the current engine of engine to allow downtime and engine features time；Judging engine allows whether downtime is greater than the engine features time；It is shut down if so, triggering engine by New-type fuel feed system；After engine is shut down, when receiving allows to start information, control signal is sent to New-type fuel feed system, triggering New-type fuel feed system provides power in the start-up course of engine.Control method, device and the vehicle of dual fuel engine start and stop provided by the invention, reduce the engine surge in vehicle shutdown process, and then improve the driving comfort and Experience Degree of driver, also, it helps energy conservation and environmental protection, improves fuel economy.
Description
Technical field
The present invention relates to automobile technical fields, control method, device more particularly, to a kind of dual fuel engine start and stop
And vehicle.
Background technique
Engine start stop system is to develop most swift and violent vehicle energy saving environmental protection technology over the years, especially suitable in traveling
The urban traffic situation frequently braked, some researches show that this set systems can reach 15% fuel-economizing ability under urban traffic situation, so opening
Stop system is increasingly becoming the standard configuration of automobile, is especially widely applied on single-fuel (such as gasoline or diesel oil) engine.
But since environmental pollution and oil crisis promote people to look for can replace the clean energy resource of gasoline, as
Vehicular engine substitute fuel, such as methanol fuel etc..But greatest problem existing for the engine using methanol fuel is low
Warm start is difficult, and for this problem, the general technical solution for using methanol/gasoline double-fuel engine, methanol, which is used as, to be started
The main fuel of machine, and gasoline is as auxiliary fuel.The fuel of engine is used gasoline as in starting and its preheating, normally
When driving using methanol as engine fuel.
Currently, usual gasoline combustion before this when dual fuel engine starts, first is converted into when water temperature and air temperature is to certain value
Alcohol burning, and in dual fuel engine shutdown process, engine is started to walk caused by Fuel switching when start and stop each because of engine
Time is long, the big problem of the fluctuation of speed, affects the fuel economy and riding comfort of automobile.
Summary of the invention
In view of this, the purpose of the present invention is to provide control method, device and the vehicles of a kind of dual fuel engine start and stop
, to alleviate existing dual fuel engine in shutdown process, engine caused by Fuel switching when start and stop each because of engine
The technical problem that start-up time is long, the fluctuation of speed is big.
In a first aspect, the embodiment of the invention provides a kind of control method of dual fuel engine start and stop, this method application
In the electronic controller for being configured with dual fuel engine system, wherein dual fuel engine system includes New-type fuel supply system
System and traditional fuel feed system, this method comprises: front truck is worked as in acquisition when monitoring that vehicle issues stopping signal to engine
Coolant temperature parameter and intake air temperature parameter；Engine is calculated according to coolant temperature parameter and intake air temperature parameter to work as
Preceding engine allows downtime and engine features time；Judging engine allows whether downtime is greater than engine spy
Levy the time；It is shut down if so, triggering engine by New-type fuel feed system；After engine is shut down, allow to open when receiving
When dynamic information, control signal, starting of the triggering New-type fuel feed system in engine are sent to New-type fuel feed system
Power is provided in journey.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein on
State method further include: be determined as allowing to start information by the enabling signal that the vehicle monitored issues engine, alternatively, when hair
When the practical downtime of motivation reaches engine permission downtime, generation allows to start information.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein on
State method further include: when judging that engine allows downtime no more than the engine features time or vehicle is to starting
After machine issues stopping signal, when practical downtime is more than that engine allows downtime, keep engine idle.
With reference to first aspect, the embodiment of the invention provides the third possible embodiments of first aspect, wherein root
Calculating the current engine of engine according to coolant temperature parameter and intake air temperature parameter allows downtime and engine features
Time step includes: to obtain pre-stored temporal information table；Wherein, temporal information table be stored with coolant temperature parameter, into
Gas temperature parameter and engine allow the corresponding relationship of downtime and engine features time；It searches in temporal information table, leads to
The coolant temperature parameter and the corresponding engine of intake air temperature parameter for crossing interpolation method acquisition vehicle allow downtime and start
The machine characteristic time.
Second aspect, the embodiment of the invention also provides a kind of control devices of dual fuel engine start and stop, wherein the dress
It sets and is applied to the electronic controller configured with dual fuel engine system, wherein dual fuel engine system includes New-type fuel
Feed system and traditional fuel feed system, the device include:
Module is obtained, for obtaining the cooling of present engine when monitoring that vehicle issues stopping signal to engine
Liquid temperature parameter and intake air temperature parameter；Computing module, for calculating hair according to coolant temperature parameter and intake air temperature parameter
The current engine of motivation allows downtime and engine features time；Judgment module, for judging that engine allows to shut down
Whether the time is greater than the engine features time；Module is shut down, for being supplied by New-type fuel when judgment module is judged as YES
System trigger engine is shut down；Starting module, after being shut down for engine, when receiving allows to start information, to novel combustion
Expect that feed system sends control signal, triggering New-type fuel feed system provides power in the start-up course of engine.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein on
State device further include: first allows to start information, and the enabling signal for issuing the vehicle monitored to engine is determined as
Allow to start information；Second allows to start information, when reaching engine for the downtime when engine allows downtime,
Generation allows to start information.
In conjunction with second aspect, the embodiment of the invention provides second of possible embodiments of second aspect, wherein on
State device further include: idle module, for when judging that engine allows downtime no more than the engine features time, or
After person's vehicle issues stopping signal to engine, when practical downtime is more than that engine allows downtime, engine is kept
It is idle.
In conjunction with second aspect, the embodiment of the invention provides the third possible embodiments of second aspect, wherein root
Calculating the current engine of engine according to coolant temperature parameter and intake air temperature parameter allows downtime and engine features
Time step includes: to obtain pre-stored temporal information table；Wherein, temporal information table be stored with coolant temperature parameter, into
Gas temperature parameter and engine allow the corresponding relationship of downtime and engine features time；It searches in temporal information table, leads to
The coolant temperature parameter and the corresponding engine of intake air temperature parameter for crossing interpolation method acquisition engine allow downtime and hair
The motivation characteristic time.
The third aspect, the embodiment of the invention also provides a kind of vehicles, wherein the vehicle configuration has dual fuel engine system
System；The electronic controller of above-mentioned vehicle includes memory and processor, and memory supports processor execution above-mentioned for storing
The program of method, processor are configurable for executing the program stored in memory.
Fourth aspect, the embodiment of the present invention also provides a kind of computer storage medium, for storing computer program instructions,
When computer executes the computer program instructions, the method as described in above-mentioned first aspect is executed.
The embodiment of the present invention bring it is following the utility model has the advantages that
Control method, device and the vehicle of a kind of dual fuel engine start and stop provided in an embodiment of the present invention, can supervise
When measuring vehicle to engine sending stopping signal, the coolant temperature parameter and intake air temperature parameter of present engine are obtained；
Calculating the current engine of engine according to coolant temperature parameter and intake air temperature parameter allows downtime and engine special
Levy the time；If engine allows downtime to be greater than the engine features time, pass through New-type fuel system trigger engine
It shuts down；After engine stop, when receiving allows to start information, control signal, touching are sent to New-type fuel feed system
Hair New-type fuel feed system provides power in the start-up course of engine, wherein by allowing downtime to engine
Judgement with the engine features time may be implemented to optimize engine system, effectively realize the start and stop function of engine,
The dual fuel engine problem long because of engine start-up time caused by each start and stop Fuel switching has not only been effectively relieved, has reduced
Engine surge in vehicle shutdown process, and then improve the driving comfort and Experience Degree of driver, meanwhile, also help
In energy conservation and environmental protection, fuel economy is improved.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those skilled in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the control method of dual fuel engine start and stop provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the control device of dual fuel engine start and stop provided in an embodiment of the present invention；
Fig. 3 is a kind of dual fuel engine start-up and shut-down control electronic schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of electronic controller provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those skilled in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, start stop system is mainly used in the vehicles such as gasoline or diesel oil, in the case where accumulator electric-quantity allows, work as vehicle
Stop and engine it is idle when can be automatically stopped engine, can be restarted automatically when needing vehicle driving
Engine.Specifically by taking MT gasoline car as an example, when speed lower than certain value, release the gas pedal, speed changer neutral gear, loosen the clutch
When pedal, automatic engine stop；After shutdown clutch pedal step on certain aperture when engine start automatically.
Currently, dual fuel engine, which refers to, not only can be used fuel oil as fuel, but also New-type fuel can be selected as fuel
Engine, engine can convert under fuel oil and New-type fuel both of which.Such as methyl-gasoline double-fuel engine,
There are a methanol nozzle and a petrol jet in each cylinder, cylinder each in this way can both spray methanol and can also spray
Gasoline, gasoline combustion, engine reached certain state and are reconverted into methanol burning before this when normally starting engine.And in double combustions
Expect in engine shutdown process, when engine surge is started to walk caused by two kinds of fuel combustions conversions when understanding start and stop each because of engine
Between it is too long, affect the driving comfort of driver.
Based on this, a kind of method, apparatus and vehicle controlling engine start and stop provided in an embodiment of the present invention be can reduce
The fluctuation when starting of engine improves the driving comfort and Experience Degree of driver.
For convenient for understanding the present embodiment, first to a kind of control engine start and stop disclosed in the embodiment of the present invention
Method describe in detail.
Embodiment one:
A kind of control method of dual fuel engine start and stop provided in an embodiment of the present invention, this method are applied to configured with double
The electronic controller of fuel engine system, wherein dual fuel engine system includes New-type fuel feed system and tradition combustion
Expect feed system.A kind of flow chart of the control method of dual fuel engine start and stop as shown in Figure 1, this method include following step
It is rapid:
Step S102 obtains the coolant liquid temperature of present engine when monitoring that vehicle issues stopping signal to engine
Spend parameter and intake air temperature parameter.
In general, when electronic controller (Electronic Control Unit, ECU) monitors that vehicle issues engine
When stopping signal, the coolant temperature parameter of current vehicle is obtained by cooling-water temperature transmitter and intake air temperature sensor
With intake air temperature parameter, general vehicle issues stopping signal to engine) it is by Engine ECU or automatic gear-box control unit
(Transmission Control Unit, TCU) is issued, when speed is empty lower than certain value, release the gas pedal, speed changer
When keeping off, releasing the clutch pedal, then stopping signal is issued.
Step S104, calculating the current engine of engine according to coolant temperature parameter and intake air temperature parameter allows to stop
Machine time and engine features time.
Wherein, engine allows downtime to refer to that the new energy feed system based on present engine state is individually smooth
The engine of starting, which is shut down, allows the time, and the engine features time is to start engine using only New-type fuel feed system
The time that New-type fuel consumption can be used for engine idling operation is the engine features time.
When specific implementation, above-mentioned New-type fuel feed system can be methanol feed system, when specific implementation, can also adopt
With other New-type fuels, it is not limited by the embodiments of the present invention.
Step S106 judges that engine allows whether downtime is greater than the engine features time.
Step S108 is shut down if so, triggering engine by New-type fuel feed system.
Step S110 after engine is shut down, when receiving allows to start information, sends to New-type fuel feed system and controls
Signal processed, triggering New-type fuel feed system provide power in the start-up course of engine.
When specific implementation, if it is judged that engine allows downtime to be greater than the engine features time, at this moment ECU passes through
New-type fuel feed system triggers engine and shuts down, after engine is shut down, if at this moment receive the signal for allowing to start,
ECU sends control signal to New-type fuel feed system, triggers New-type fuel feed system during the starting of engine
Power is provided, ensures that engine starts in time.Such as New-type fuel feed system can be methanol in embodiments of the present invention
Feed system can make engine be not easy to start, it is therefore desirable to according to the cold of acquisition since methanol fuel is nonflammable in low temperature
But liquid temperature parameter and intake air temperature parameter, which calculate engine, allows downtime and engine features time, starts by comparing
Machine allows downtime and the size of engine features time to determine whether triggering engine is shut down.
A kind of control method of dual fuel engine start and stop provided in an embodiment of the present invention can monitor vehicle to hair
When motivation issues stopping signal, the coolant temperature parameter and intake air temperature parameter of present engine are obtained；According to coolant liquid temperature
It spends parameter and intake air temperature parameter calculates the current engine of engine and allows downtime and engine features time；If hair
When motivation allows downtime to be greater than the engine features time, engine is triggered by New-type fuel feed system and is shut down；It is sending out
After motivation is shut down, when receiving allows to start information, control signal is sent to New-type fuel feed system, triggers New-type fuel
Feed system provides power in the start-up course of engine, wherein by allowing downtime and engine special in engine
The judgement of sign time may be implemented to optimize engine system, effectively realize the start and stop function of engine, not only effectively slow
The dual fuel engine problem long because of engine start-up time caused by each start and stop Fuel switching has been solved, vehicle start and stop are reduced
Engine surge in the process, and then the driving comfort and Experience Degree of driver are improved, also, it helps energy-saving ring
It protects, improves fuel economy.
Specifically, the enabling signal that the vehicle monitored issues engine is determined as allowing to start information, alternatively, working as
When the practical downtime of engine reaches engine permission downtime, generation allows to start information.
When specific implementation, using above-mentioned New-type fuel as methanol fuel, when the reality for monitoring enabling signal or engine
When downtime reaches engine permission downtime, ECU sends control signal to methanol feed system, and triggering methanol supply is
System provides power during the starting of engine, ensures that engine starts in time.Wherein, general vehicle is issued to engine
Enabling signal is issued by Engine ECU or TCU, after shutdown clutch pedal step on certain aperture when, then issue starting
Signal, engine start automatically.
The practical downtime of engine be engine shut down it is flame-out after, by the timer that is set in advance in ECU into
Row timing.
In practical application, when judging that engine allows downtime no more than the engine features time, Huo Zheche
To engine issue stopping signal after, practical downtime be more than engine allow downtime when, keep engine idling
Operation.
Specifically, if engine allows downtime to be not more than the engine features time, even if having monitored vehicle
To the stopping signal that engine issues, at this moment, ECU, which controls current vehicle by methanol feed system, to be stopped, and methanol supplies
System, which is that engine is idle, provides power.
Further, calculating the current engine of engine according to coolant temperature parameter and intake air temperature parameter allows to shut down
Time and engine features time step include: to obtain pre-stored temporal information table；Wherein, temporal information table is stored with cold
But liquid temperature parameter, intake air temperature parameter and engine allow the corresponding relationship of downtime and engine features time；It searches
In temporal information table, the coolant temperature parameter and the corresponding engine of intake air temperature parameter of current vehicle are obtained by interpolation method
Allow downtime and engine features time.
Specifically, temporal information table can be coolant temperature parameter, the corresponding engine of intake air temperature parameter allows to stop
The two dimension of machine time and engine features time are tabled look-up, and coolant temperature parameter, the corresponding hair of intake air temperature parameter are also possible to
Motivation allows the function or logical relation of downtime and engine features time, and specific set-up mode can be according to reality
Border situation is configured, and it is not limited by the embodiments of the present invention.
Embodiment two:
On the basis of the above embodiments, the embodiment of the invention also provides a kind of control of dual fuel engine start and stop dresses
It sets, which is applied to the electronic controller configured with dual fuel engine system, wherein above-mentioned dual fuel engine system packet
New-type fuel feed system and gas supply system are included, a kind of control device of dual fuel engine start and stop as shown in Figure 2
Structural schematic diagram, the device include:
Module 202 is obtained, for obtaining the cooling of current vehicle when monitoring that vehicle issues stopping signal to engine
Liquid temperature parameter and intake air temperature parameter；
Computing module 204, for being calculated according to coolant temperature parameter and intake air temperature parameter, engine is current to be started
Machine allows downtime and engine features time；
Judgment module 206, for judging that engine allows whether downtime is greater than the engine features time；
Module 208 is shut down, for engine being triggered by New-type fuel feed system and being stopped when judgment module is judged as YES
Machine；
Starting module 210 after shutting down for engine, when receiving allows to start information, supplies system to New-type fuel
System sends control signal, and triggering New-type fuel feed system provides power in the start-up course of engine.
When specific implementation, above-mentioned apparatus further include:
First allows to start information module, and the enabling signal for issuing the vehicle monitored to engine is determined as permitting
Perhaps start information；
Second allows to start information module, when reaching engine for the downtime when engine allows downtime,
Generation allows to start information.
Idle module, for when judging that engine allows downtime no more than the engine features time, Huo Zheche
To engine issue stopping signal after, practical downtime be more than engine allow downtime when, keep engine idling
Operation.
Wherein, computing module is used for: obtaining pre-stored temporal information table；Wherein, temporal information table is stored with cooling
Liquid temperature parameter, intake air temperature parameter and engine allow the corresponding relationship of downtime and engine features time；When lookup
Between in information table, obtaining the coolant temperature parameter of vehicle and the corresponding engine of intake air temperature parameter by interpolation method allows to stop
Machine time and engine features time.
The control device of dual fuel engine start and stop provided in an embodiment of the present invention, with double fuel provided by the above embodiment
The control method of engine start and stop technical characteristic having the same reaches identical so also can solve identical technical problem
Technical effect.
The embodiment of the invention also provides a kind of vehicle, which has dual fuel engine system；The electronics of vehicle
Controller includes memory and processor, and memory is used to store the program for supporting processor to execute the above method, processor
It is configurable for executing the program stored in memory.
For the ease of understanding above-mentioned vehicle, Fig. 3 shows a kind of dual fuel engine start-up and shut-down control electrical principle
Schematic diagram, wherein Fig. 3 is illustrated by taking four cylinder methyl-gasoline double-fuel engine control systems as an example, includes 4 gas in figure
Cylinder, each cylinder have a petrol jet and a methanol nozzle, each cylinder be also configured with corresponding ignition coil and
Spark plug and a nozzle power supply and an ignition coil power supply, above-mentioned component is connected with electronic controller, while electronics
Controller can obtain starting/stopping signal of coolant temperature parameter, intake air temperature parameter and engine.
When specific implementation, electronic controller obtains coolant temperature parameter, intake air temperature parameter and starting/shutdown letter
Number, through temperature parameter to acquisition and signal after calculating and analysis, opening for engine is realized using methanol feed system
Stop, the control method of above-mentioned dual fuel engine start and stop is equally applicable to multiple cylinder engine, such as 6 cylinders, 8 cylinders, and the present invention is real
It applies example and this is not limited.
Further, a kind of computer storage medium of the present invention, for storing computer program instructions, when computer executes institute
When stating computer program instructions, the method as described in above-described embodiment one is executed.
The structural block diagram of a kind of electronic controller shown in Figure 4, comprising: processor 400, memory 401, bus
402 and communication interface 403, the processor 400, communication interface 403 and memory 401 are connected by bus 402；Processor
400 for executing the executable module stored in memory 401, such as computer program.
Wherein, memory 401 may include high-speed random access memory (RAM, Random Access Memory),
It may further include non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.By extremely
A few communication interface 403 (can be wired or wireless) is realized logical between the system network element and at least one other network element
Letter connection, can be used internet, wide area network, local network, Metropolitan Area Network (MAN) etc..
Bus 402 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, number
According to bus, control bus etc..Only to be indicated with a four-headed arrow in Fig. 4, it is not intended that an only bus convenient for indicating
Or a type of bus.
Wherein, memory 401 is for storing program, and the processor 400 executes the journey after receiving and executing instruction
The method of sequence, the control engine start and stop that aforementioned any embodiment of the embodiment of the present invention discloses can be applied in processor 400,
Or it is realized by processor 400.
Processor 400 may be a kind of IC chip, the processing capacity with signal.It is above-mentioned during realization
Each step of method can be completed by the integrated logic circuit of the hardware in processor 400 or the instruction of software form.On
The processor 400 stated can be general processor, including central processing unit (Central Processing Unit, abbreviation
CPU), network processing unit (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (Digital
Signal Processing, abbreviation DSP), specific integrated circuit (Application Specific Integrated
Circuit, abbreviation ASIC), ready-made programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or
Person other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute sheet
Disclosed each method, step and logic diagram in inventive embodiments.General processor can be microprocessor or the processing
Device is also possible to any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in
Hardware decoding processor executes completion, or in decoding processor hardware and software module combination execute completion.Software mould
Block can be located at random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable storage
In the storage medium of this fields such as device, register maturation.The storage medium is located at memory 401, and processor 400 reads memory
Information in 401, in conjunction with the step of its hardware completion above method.
The computer program of the control method of dual fuel engine start and stop, device and vehicle provided by the embodiment of the present invention
Product, the computer readable storage medium including storing program code, the instruction that said program code includes can be used for executing
Previous methods method as described in the examples, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the vehicle of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
Finally, it should be noted that above embodiments, only a specific embodiment of the invention, to illustrate skill of the invention
Art scheme, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to the present invention into
Go detailed description, it should be understood by those skilled in the art that: anyone skilled in the art takes off in the present invention
In the technical scope of dew, it can still modify to technical solution documented by previous embodiment or can readily occur in change
Change or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make relevant art
Scheme essence be detached from technical solution of the embodiment of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of control method of dual fuel engine start and stop, which is characterized in that the method is applied to send out configured with double fuel
The electronic controller of motivation system, wherein the dual fuel engine system includes New-type fuel feed system and traditional fuel
Feed system, which comprises
When monitoring that vehicle issues stopping signal to engine, the coolant temperature parameter and air inlet temperature of present engine are obtained
Spend parameter；
Calculating the current engine of the engine according to the coolant temperature parameter and the intake air temperature parameter allows to stop
Machine time and engine features time；
Judging the engine allows whether downtime is greater than the engine features time；
It is shut down if so, triggering the engine by the New-type fuel feed system；
After the engine is shut down, when receiving allows to start information, Xiang Suoshu New-type fuel feed system sends control letter
Number, it triggers the New-type fuel feed system and provides power in the start-up course of the engine.
2. the method according to claim 1, wherein the method also includes:
By the enabling signal that the vehicle monitored issues the engine be determined as it is described allow start information, alternatively,
When the practical downtime of the engine, which reaches the engine, allows downtime, generation is described to be allowed to start letter
Breath.
3. the method according to claim 1, wherein the method also includes:
When judging that the engine allows downtime no more than the engine features time or vehicle is to engine
After issuing stopping signal, when practical downtime is more than that engine allows downtime, keep the engine idle.
4. the method according to claim 1, wherein described according to the coolant temperature parameter and the air inlet
Temperature parameter calculates the current engine permission downtime of the engine and the engine features time step includes:
Obtain pre-stored temporal information table；Wherein, the temporal information table is stored with the coolant temperature parameter, described
Intake air temperature parameter and the engine allow the corresponding relationship of downtime and the engine features time；
It searches in the temporal information table, the coolant temperature parameter and the air inlet temperature of the engine is obtained by interpolation method
Spending the corresponding engine of parameter allows downtime and the engine features time.
5. a kind of control device of dual fuel engine start and stop, which is characterized in that described device is applied to send out configured with double fuel
The electronic controller of motivation system, wherein the dual fuel engine system includes New-type fuel feed system and traditional fuel
Feed system, described device include:
Module is obtained, for obtaining the coolant liquid temperature of present engine when monitoring that vehicle issues stopping signal to engine
Spend parameter and intake air temperature parameter；
Computing module, it is current for calculating the engine according to the coolant temperature parameter and the intake air temperature parameter
Engine allows downtime and engine features time；
Judgment module, for judging that the engine allows whether downtime is greater than the engine features time；
Module is shut down, for triggering the engine by the New-type fuel feed system when judgment module is judged as YES
It shuts down；
Starting module, after being shut down for the engine, when receiving allows to start information, Xiang Suoshu New-type fuel supply system
System sends control signal, triggers the New-type fuel feed system and provides power in the start-up course of the engine.
6. device according to claim 5, which is characterized in that described device further include:
First allows to start information module, for determining the vehicle monitored to the enabling signal that the engine issues
Allow to start information to be described；
Second allows to start information module, and reaching the engine for the downtime when the engine allows downtime
When, generation is described to be allowed to start information.
7. device according to claim 5, which is characterized in that described device further include:
Idle module, for when judging that the engine allows downtime no more than the engine features time, or
After person's vehicle issues stopping signal to engine, when practical downtime is more than that engine allows downtime, the hair is kept
Motivation is idle.
8. device according to claim 5, which is characterized in that computing module is used for:
Obtain pre-stored temporal information table；Wherein, the temporal information table is stored with the coolant temperature parameter, described
Intake air temperature parameter and the engine allow the corresponding relationship of downtime and the engine features time；
It searches in the temporal information table, the coolant temperature parameter and the air inlet of the vehicle is obtained by interpolation method
The corresponding engine of temperature parameter allows downtime and the engine features time.
9. a kind of vehicle, which is characterized in that the vehicle configuration has dual fuel engine system；
The electronic controller of the vehicle includes memory and processor, and the memory supports the processor for storing
Perform claim requires the program of any one of 1 to 4 the method, the processor is configured to depositing in the memory for executing
The program of storage.
10. a kind of computer storage medium, which is characterized in that for storing computer program instructions, described in computer execution
When computer program instructions, such as the described in any item methods of Claims 1-4 are executed.
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| CN201811305108.6A CN109681334B (en) | 2018-11-02 | 2018-11-02 | Control method and device for starting and stopping dual-fuel engine and vehicle |
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| CN201811305108.6A CN109681334B (en) | 2018-11-02 | 2018-11-02 | Control method and device for starting and stopping dual-fuel engine and vehicle |
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| CN109681334B (en) | 2022-01-21 |
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