CN104481710B - The control method of multifuel engine, control system and vehicle - Google Patents
The control method of multifuel engine, control system and vehicle Download PDFInfo
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- CN104481710B CN104481710B CN201410603030.1A CN201410603030A CN104481710B CN 104481710 B CN104481710 B CN 104481710B CN 201410603030 A CN201410603030 A CN 201410603030A CN 104481710 B CN104481710 B CN 104481710B
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- cylinder
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- 239000000446 fuel Substances 0.000 claims abstract description 73
- 239000000295 fuel oil Substances 0.000 claims abstract description 30
- 150000001298 alcohols Chemical class 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- OCLXJTCGWSSVOE-UHFFFAOYSA-N ethanol EtOH Chemical compound CCO.CCO OCLXJTCGWSSVOE-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The present invention provides the control method of a kind of multifuel engine, control system and vehicle, wherein, described multifuel engine include can non-combusted fuels acting the first cylinder and can burn Aalcohols fuel acting the second cylinder, described method is included under low-temperature cool starting pattern and makes fuel oil enter in described first cylinder, and makes described first cylinder working.The control method of multifuel engine of the present invention can overcome the defect of Aalcohols fuel low-temperature cool starting difficulty present in multifuel engine.
Description
Technical field
The present invention relates to technical field of engines, particularly to control method, the control system of a kind of multifuel engine
And vehicle.
Background technology
In recent years, along with Domestic Automotive Industry develops the sustainable growth with mean inhabitant income rapidly, automobile pollution by
Year increases.The fuel of automobile is mainly based on oil at present, and world petroleum resource reduces day by day, and the supply of engine fuel will
More and more nervous.Therefore, using alternative fuel is to solve the important measures of China's oil shortage of resources.It addition, motor petrol, bavin
The environmental pollution that oil causes is the most serious, and using cleaning alternative fuel is to reduce the effective way of vehicle emission pollution.
In numerous cleaning alternative fuel, alcohol fuel is owing to wide material sources, anti-knock properties are good and oil-fired physics and chemistry
Can be close, thus receive much concern, data shows, uses the Aalcohols fuels such as ethanol at most can reduce the HC discharge capacity of 40%, and it is right
The energy-saving and emission-reduction of electromotor play immeasurable effect.
In electromotor of the prior art, the solution the best for the present situation of Aalcohols fuel low-temperature cool starting difficulty is arranged
Execute, cause Aalcohols fuel to be restricted as single or dual-fuel application within the engine, apply the most extensive.
Summary of the invention
In view of this, it is contemplated that propose the control method of a kind of multifuel engine, so that multi fuel can be overcome to send out
The defect of Aalcohols fuel low-temperature cool starting difficulty present in motivation.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The control method of a kind of multifuel engine, wherein, described multifuel engine includes can non-combusted fuels acting
The first cylinder and can burn Aalcohols fuel acting the second cylinder, described method is included under low-temperature cool starting pattern and makes fuel oil enter
Enter in described first cylinder, and make described first cylinder working.
Further, described first cylinder is that acting when all working of multiple and according to described multifuel engine each cylinder is suitable
Sequence is spaced a sequence number sequence, and described method is included under low-temperature cool starting pattern and makes fuel oil enter multiple described first cylinders, and
Make multiple described first cylinder working.
Further, described method includes: make described Aalcohols fuel enter described second cylinder under low speed Smaller load pattern
In, and only make described second cylinder working.
Further, described method includes: make fuel oil enter in described first cylinder and make institute under the big load pattern of low speed
State Aalcohols fuel to enter in described second cylinder, and make described first cylinder and described second cylinder working；Or described first cylinder can also
Enough burn described Aalcohols fuel, and described method is included under the big load pattern of low speed and makes described Aalcohols fuel enter described first cylinder
With in the second cylinder, and make described first cylinder and described second cylinder working.
Relative to prior art, the control method of multifuel engine of the present invention has the advantage that
Owing to the control method of multifuel engine of the present invention makes fuel oil enter institute under low-temperature cool starting pattern
State in the first cylinder, and make described first cylinder working, thus start multifuel engine, say, that in low-temperature cool starting pattern
Fuel oil is used to start electromotor, the problem efficiently solving alcohols (such as ethanol) fuel cold start-up difficulty.
Another object of the present invention is to propose the control system of a kind of multifuel engine, so that multi fuel can be overcome to send out
The defect of Aalcohols fuel low-temperature cool starting difficulty present in motivation.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The control system of a kind of multifuel engine, wherein, described multifuel engine includes doing work for non-combusted fuels
The first cylinder and for burn Aalcohols fuel acting the second cylinder, described control system includes control module, this control module use
Enter in described first cylinder in making fuel oil under low-temperature cool starting pattern and make described first cylinder working.
Further, described first cylinder is that acting when all working of multiple and according to described multifuel engine each cylinder is suitable
Sequence is spaced the sequence of sequence number, and under described low-temperature cool starting pattern, described control module controls fuel oil and enters multiple described the
One cylinder, and make multiple described first cylinder working.
Further, described control module is additionally operable to control under low speed Smaller load pattern described in the entrance of described Aalcohols fuel
In second cylinder, and only make described second cylinder working.
Further, described control module is additionally operable to control described fuel oil under the big load pattern of low speed and enters described first
In cylinder and make described Aalcohols fuel enter in described second cylinder, and make described first cylinder and described second cylinder working；Or, described
First cylinder can also burn described Aalcohols fuel, and described control module is additionally operable to control described alcohols under the big load pattern of low speed
Fuel enters in described first cylinder and the second cylinder, and makes described first cylinder and described second cylinder working.
The control method of the control system of described multifuel engine and above-mentioned multifuel engine is relative to prior art
Have the advantage that is identical, does not repeats them here.
Another object of the present invention is to propose a kind of vehicle, can overcome alcohols combustion present in multifuel engine
The defect of material low-temperature cool starting difficulty.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of vehicle, is provided with multifuel engine, and wherein, described vehicle is additionally provided with according to institute in technique scheme
The control system of the multifuel engine stated.
Further, described multifuel engine include can non-combusted fuels acting the first cylinder and can burn alcohols combustion
Second cylinder of material acting, the scope of the compression ratio of described first cylinder is between 9 to 12, and the scope of the compression ratio of described second cylinder exists
Between 10 to 13.
Described vehicle is identical relative to prior art have the advantage that with the control method of above-mentioned multifuel engine,
This repeats no more.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the multifuel engine described in the first embodiment of the present invention.
Fig. 2 is the schematic diagram of the multifuel engine described in the second embodiment of the present invention.
Description of reference numerals:
1-fuel rail, number cylinder of 2-, No. bis-cylinders of 3-, No. tri-cylinders of 4-, No. tetra-cylinders of 5-, 11-fuel oil enters pipeline, 12-second
Alcohol enters pipeline.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.
In the present invention, term " first ", " second " are only used for the purpose described, and it is not intended that indicate or imply it
Significance level or the implicit quantity indicating indicated technical characteristic.Additionally, in describing the invention, the implication of " multiple "
It is two or more, unless otherwise expressly limited specifically.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
According to an aspect of the present invention, it is provided that the control method of a kind of multifuel engine, wherein, multifuel engine
Including can non-combusted fuels acting the first cylinder and can burn Aalcohols fuel acting the second cylinder, method is included in low temperature cold and opens
Make fuel oil enter in the first cylinder under dynamic model formula, and make the first cylinder working.
As above, fuel oil is made to enter due to the control method of the multifuel engine in the present invention under low-temperature cool starting pattern
In first cylinder, and make the first cylinder working, thus start multifuel engine, say, that use combustion in low-temperature cool starting pattern
Oil starts electromotor, the problem efficiently solving alcohols (such as ethanol) fuel cold start-up difficulty.Here fuel oil can refer to
Be gasoline etc., and Aalcohols fuel also refers to ethanol etc., but the invention is not restricted to this.
According to the preferred embodiment of the present invention, the first cylinder is that multiple and according to multifuel engine each cylinder is when all working
The sequence of one sequence number of acting sequence interval, method is included under low-temperature cool starting pattern and makes fuel oil enter multiple first cylinders, and
Make multiple first cylinder working.Here, in order to make it easy to understand, see the multi fuel described in the first embodiment of the present invention and send out
Schematic diagram Fig. 1 of motivation, it is assumed that this multifuel engine is four cylinder engine, four cylinders are entered with fuel oil by fuel rail 1
Pipeline 11 and ethanol enter pipeline 12 and connect, and wherein a cylinder 2 and No. four cylinders 5 are the first cylinder, and No. two cylinders 3 and No. three cylinders 4 are the
Two cylinder, such that it is able to enter pipeline 11 by fuel oil to provide fuel oil to a cylinder 2 and No. four cylinders 5, enters pipeline 12 by ethanol
Ethanol is provided to No. two cylinders 3 and No. three cylinders 4.Acting order when each cylinder of this multifuel engine all works is a cylinder
2 No. three cylinders, 5 No. two cylinders 3 of 4 No. four cylinders.Such setting, because no matter from the space cloth of the cylinder body of electromotor
Put or the most all carried out consideration spaced apart from acting, it is possible to efficiently controlling shaking of multifuel engine
Move and noise, keep the balance of whole electromotor.But, the present invention and be limited to above preferred implementation, such as make
First cylinder be one or acting order continuously sequence when all working for multiple and according to multifuel engine each cylinders or
Being spaced the sequence of multiple sequence number also possible, these schemes fall within protection scope of the present invention.Although it is additionally, aobvious in figure
Between fuel rail 1 and each cylinder of this multifuel engine of showing, the most only there is an injection line, but this Fig. 1 is
In the purpose of signal, it is not limited to the present invention, so fuel rail 1 and in each cylinder of this multifuel engine
Have between cylinder in each cylinder of two (or more a plurality of) injection line, even fuel rail 1 and this multifuel engine
Being respectively provided with two (or more a plurality of) injection line between multiple cylinders to be all possible, this type of scheme is all belonging to the guarantor of the present invention
Protect scope.
Additionally, in a preferred embodiment of the invention, described control method can also include: in low speed Smaller load pattern
Under make Aalcohols fuel enter in the second cylinder, and only make the second cylinder working.Owing to electromotor being moved under low speed Smaller load pattern
Power requires not to be the highest relatively, so only enabling the second cylinder working reduce car load row while meeting engine power demand
Zoom level.
It addition, it is highly preferred that described control method can also include: make fuel oil enter first under the big load pattern of low speed
In cylinder and make Aalcohols fuel enter in the second cylinder, and make the first cylinder and the second cylinder working；Or the first cylinder can also burn alcohols
Fuel, say, that see the schematic diagram 2 of the multifuel engine described in the second embodiment of the present invention, now fire
It is respectively provided with two injections between oil guide rail 1 and each first cylinder (being a cylinder 2 and No. four cylinders 5 in figure) of this multifuel engine
Pipeline (one is used for spraying fuel oil, another is used for spraying Aalcohols fuel), so at this point it is possible under low-temperature cool starting pattern
Make in fuel oil the first cylinder, and make Aalcohols fuel enter in the first cylinder under the big load pattern of low speed.The method is additionally may included in
Make Aalcohols fuel enter in the first cylinder and the second cylinder under the big load pattern of low speed, and make the first cylinder and the second cylinder working.Due to this
Time, the first cylinder and the second cylinder all work, it is possible to it has enough power to make multifuel engine ensure, and this up to
A rare class cylinder uses Aalcohols fuel, so also being able to reduce the emission level of electromotor.
According to another aspect of the present invention, also providing for the control system of a kind of multifuel engine, wherein, multi fuel is sent out
Motivation includes the first cylinder for non-combusted fuels acting and the second cylinder for Aalcohols fuel acting of burning, and control system includes control
Molding block, this control module is for making fuel oil enter in the first cylinder and make the first cylinder working under low-temperature cool starting pattern.
Same, owing to the control module in the control system of the multifuel engine in the present invention can open at low temperature cold
Make fuel oil enter in the first cylinder under dynamic model formula, and make the first cylinder working, thus start multifuel engine, say, that low
Temperature cold start mode uses fuel oil to start electromotor, efficiently solves asking of alcohols (such as ethanol) fuel cold start-up difficulty
Topic.
In order to adapt with the control method of the multifuel engine described before, in the multifuel engine of the present invention
In control system, the first cylinder can be multiple and according to multifuel engine each cylinder acting sequence interval one when all working
Sequence number sorts, and under low-temperature cool starting pattern, control module controls fuel oil and enters multiple first cylinders, and makes multiple first cylinder work
Make.Control module can be also used for controlling Aalcohols fuel under low speed Smaller load pattern and enters in the second cylinder, and only makes the second cylinder
Work.Control module can be also used for controlling fuel oil under the big load pattern of low speed and enters in the first cylinder and make Aalcohols fuel enter
In second cylinder, and make the first cylinder and the second cylinder working；Or, the first cylinder can also burn Aalcohols fuel, and control module is all right
Enter in the first cylinder and the second cylinder for controlling Aalcohols fuel under the big load pattern of low speed, and make the first cylinder and the second cylinder work
Make.
The detailed description of the invention of control system and corresponding benefit effect above with respect to multifuel engine
With from being embodied in the description of the control method of multifuel engine above, therefore repeat no more here.
According to another aspect of the present invention, also providing for a kind of vehicle, this vehicle is provided with multifuel engine, wherein,
Vehicle is additionally provided with the control system according to the multifuel engine described in technique scheme, and this improves described car undoubtedly
Overall performance.
Additionally, the first cylinder that multifuel engine may be configured to non-combusted fuels acting does with the Aalcohols fuel that can burn
Second cylinder of merit, the scope of the compression ratio of the first cylinder is between 9 to 12, and the scope of the compression ratio of the second cylinder is between 10 to 13.
The purpose so arranged is to enable the compression ratio of the first cylinder preferably to mate gasoline, and the compression ratio of the second cylinder can be more
Mate Aalcohols fuel well such that it is able to efficiently solving electromotor, to be easily generated pinking, noise and dynamic property, economic performance poor
Etc. problem.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. the control method of a multifuel engine, it is characterised in that described multifuel engine includes can non-combusted fuels
First cylinder of acting and the second cylinder of Aalcohols fuel acting of can burning, described method is included under low-temperature cool starting pattern and makes combustion
Oil enters in described first cylinder, and makes described first cylinder working；
Make fuel oil enter in described first cylinder under the big load pattern of low speed and make described Aalcohols fuel enter in described second cylinder,
And make described first cylinder and described second cylinder working；Or
Described first cylinder can also burn described Aalcohols fuel, and described method is included under the big load pattern of low speed and makes described alcohols
Fuel enters in described first cylinder and the second cylinder, and makes described first cylinder and described second cylinder working.
The control method of multifuel engine the most according to claim 1, it is characterised in that described first cylinder be multiple also
One the sequence number sequence of acting sequence interval when all working according to each cylinder of described multifuel engine, described method is included in low
Make fuel oil enter multiple described first cylinders under temperature cold start mode, and make multiple described first cylinder working.
The control method of multifuel engine the most according to claim 1 and 2, it is characterised in that described method includes:
Make described Aalcohols fuel enter in described second cylinder under low speed Smaller load pattern, and only make described second cylinder working.
4. the control system of a multifuel engine, it is characterised in that described multifuel engine includes for non-combusted fuels
The first cylinder done work and the second cylinder done work for the Aalcohols fuel that burns, described control system includes control module, this control mould
Block enters in described first cylinder for making fuel oil under low-temperature cool starting pattern and makes described first cylinder working；
Described control module is additionally operable to control described fuel oil under the big load pattern of low speed and enters in described first cylinder and make described
Aalcohols fuel enters in described second cylinder, and makes described first cylinder and described second cylinder working；
Or, described first cylinder can also burn described Aalcohols fuel, and described control module is additionally operable at the big load pattern of low speed
The lower described Aalcohols fuel of control enters in described first cylinder and the second cylinder, and makes described first cylinder and described second cylinder working.
The control system of multifuel engine the most according to claim 4, it is characterised in that described first cylinder be multiple also
One the sequence number sequence of acting sequence interval when all working according to each cylinder of described multifuel engine, at described low-temperature cool starting
Under pattern, described control module controls fuel oil and enters multiple described first cylinders, and makes multiple described first cylinder working.
6. according to the control system of the multifuel engine described in claim 4 or 5, it is characterised in that described control module is also
Enter in described second cylinder for controlling described Aalcohols fuel under low speed Smaller load pattern, and only make described second cylinder working.
7. a vehicle, is provided with multifuel engine, it is characterised in that described vehicle is additionally provided with according to claim 4 to 6
The control system of the multifuel engine described in middle any one.
Vehicle the most according to claim 7, it is characterised in that described multifuel engine includes can non-combusted fuels acting
The first cylinder and can burn Aalcohols fuel acting the second cylinder, the scope of the compression ratio of described first cylinder between 9 to 12, institute
State the scope of compression ratio of the second cylinder between 10 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603030.1A CN104481710B (en) | 2014-10-30 | The control method of multifuel engine, control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603030.1A CN104481710B (en) | 2014-10-30 | The control method of multifuel engine, control system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481710A CN104481710A (en) | 2015-04-01 |
| CN104481710B true CN104481710B (en) | 2017-01-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03124929A (en) * | 1989-10-06 | 1991-05-28 | Toyota Motor Corp | Fuel injection control device of alcohol-mixed fuel vehicle |
| CN2911208Y (en) * | 2005-10-31 | 2007-06-13 | 王和平 | I.C.engine of realizing double jetting of alcohol fuel and fuel |
| NL2001345C2 (en) * | 2008-03-03 | 2009-09-07 | Vialle Alternative Fuel System | Fuel supply arrangement for combustion engine of vehicle with direct injection, has control valve which is mounted across non-return valve provided in the petrol fuel line |
| CN103615345A (en) * | 2013-12-10 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Cold start system and start method for flexible fuel vehicle |
| CN104011350A (en) * | 2011-11-29 | 2014-08-27 | 通用电气公司 | An engine utilizing a plurality of fuels, and a related method thereof |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03124929A (en) * | 1989-10-06 | 1991-05-28 | Toyota Motor Corp | Fuel injection control device of alcohol-mixed fuel vehicle |
| CN2911208Y (en) * | 2005-10-31 | 2007-06-13 | 王和平 | I.C.engine of realizing double jetting of alcohol fuel and fuel |
| NL2001345C2 (en) * | 2008-03-03 | 2009-09-07 | Vialle Alternative Fuel System | Fuel supply arrangement for combustion engine of vehicle with direct injection, has control valve which is mounted across non-return valve provided in the petrol fuel line |
| CN104011350A (en) * | 2011-11-29 | 2014-08-27 | 通用电气公司 | An engine utilizing a plurality of fuels, and a related method thereof |
| CN103615345A (en) * | 2013-12-10 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Cold start system and start method for flexible fuel vehicle |
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