CN106555679A - The throttle control method of dual fuel engine, system and vehicle - Google Patents
The throttle control method of dual fuel engine, system and vehicle Download PDFInfo
- Publication number
- CN106555679A CN106555679A CN201510627130.2A CN201510627130A CN106555679A CN 106555679 A CN106555679 A CN 106555679A CN 201510627130 A CN201510627130 A CN 201510627130A CN 106555679 A CN106555679 A CN 106555679A
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- Prior art keywords
- vehicle
- temperature
- dual fuel
- fuel engine
- throttle
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0225—Intake air or mixture temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a kind of throttle control method of dual fuel engine, system and vehicle, the method includes：The gentle oil temperature of detection engine water；If engine water temperature is more than the first predetermined temperature and oil temperature is more than the second predetermined temperature, determine whether vehicle whether in sliding state；If vehicle is in sliding state, control air throttle is opened, and determines the opening time according to intake air temperature；After the opening time of air throttle reaches the opening time, closed throttle is controlled.The method of the present invention can reduce oil consumption, while reducing exhaust pollutant discharge.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of throttle control method of dual fuel engine, system and vehicle.
Background technology
The dual fuel engine of two kinds of fuel of dual fuel engine, such as gasoline and diesel oil, has tail gas relative to traditional diesel engine
The low advantage of pollutant emission, has fuel-efficient advantage relative to traditional gasoline engine.However, dual fuel engine
For the temperature in cylinder has higher requirement, when vapour cylinder temperature is relatively low, fuel can not burn completely.
Within the engine, generally by the entrance of throttle control air and recycling gas.Usually, in Diesel engine,
The state that air throttle is typically opened, only closes certain angle when needing and increasing exhaust gas recirculation rate.In dual fuel engine
In, if adopted and Diesel engine identical throttle control method, in vehicle sliding, air throttle is always on, from
And the temperature in cylinder can be substantially reduced.Terminate to slide in vehicle and start to accelerate, or the rotating speed of engine is reduced to idling speed
Afterwards, the interior oil jetting combustion again of engine.Now as vapour cylinder temperature is relatively low, fuel combustion is very insufficient, thus greatly increases
Oil consumption, while can be containing pollutants such as more carbon monoxide, hydrocarbon and pellets in tail gas.
The content of the invention
In view of this, it is contemplated that proposing a kind of throttle control method of dual fuel engine, the method can reduce oil consumption,
Exhaust pollutant discharge is reduced simultaneously.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of throttle control method of dual fuel engine, comprises the following steps：The gentle oil temperature of detection engine water；Such as
Really described engine water temperature is more than the first predetermined temperature and the oil temperature is more than the second predetermined temperature, then determine whether vehicle
Whether sliding state is in；If the vehicle is in the sliding state, controls the air throttle and open, and according to air inlet
Temperature determines the opening time；After the opening time of the air throttle reaches the opening time, the closed throttle is controlled.
Further, the throttle control method of described dual fuel engine also includes：When the vehicle is braked, institute is controlled
State closed throttle.
Further, it is described to judge that vehicle, whether in sliding state, is specifically included：Detection braking signal and signal for faster；Such as
Fruit is not detected by the brake signal and the signal for faster, then judge that the vehicle is in the sliding state；If detection
To the brake signal or the signal for faster, then judge that the vehicle is not in the sliding state.
Further, the intake air temperature is higher, and the opening time is longer.
Further, first predetermined temperature is 75 DEG C to 85 DEG C, and second predetermined temperature is 85 DEG C to 95 DEG C.
Relative to prior art, the throttle control method of dual fuel engine of the present invention has the advantage that：
The throttle control method of the dual fuel engine of the embodiment of the present invention, meets predetermined bar in the gentle oil temperature of engine water
During part, whether vehicle is can determine whether in sliding state, and control air throttle is opened when vehicle is in sliding state, thus, can
In vehicle sliding, by opening throttle reducing the towing astern resistance of dual fuel engine such that it is able to reduce the waste of the energy；
Meanwhile, after air throttle opens a period of time, closed throttle is can control, thus, the temperature in dual fuel engine can be made to begin
The condition of full combustion of fuel is met eventually such that it is able to reduce oil consumption, reduce the discharge capacity of exhaust pollutant.
Further object is that proposing a kind of air throttle control system of dual fuel engine, the system can reduce oil
Consumption, while reducing exhaust pollutant discharge.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of air throttle control system of dual fuel engine, including：Detection module, for detecting the gentle machine oil temperature of engine water
Degree；Judge module, is more than the second predetermined temperature for being more than the first predetermined temperature and the oil temperature in the engine water temperature
When, judge vehicle whether in sliding state；Control module, for judging that vehicle is slided in described in the judge module
During state, control the air throttle and open, and the opening time is determined according to intake air temperature, and when the opening of the air throttle
Between reach the opening time after, control the closed throttle.
Further, the control module is additionally operable to：When the vehicle is braked, the closed throttle is controlled.
Further, the judge module includes：Detector unit, for detection braking signal and signal for faster；Identifying unit,
If being not detected by the brake signal and the signal for faster for the detector unit, judge the vehicle in described
Sliding state, if the detector unit detects the brake signal or the signal for faster, judges that the vehicle is not in
The sliding state.
Further, intake air temperature is higher, and the opening time is longer.
The air throttle control system of described dual fuel engine is relative with the throttle control method of above-mentioned dual fuel engine
It is had the advantage that identical in prior art, will not be described here.
Further object is that proposing a kind of vehicle, the vehicle can reduce oil consumption, while reducing exhaust pollutant row
Put.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of vehicle, the air throttle control system of the dual fuel engine being provided with as described in above-mentioned embodiment.
The air throttle control system of described vehicle and above-mentioned dual fuel engine is relative to the had the advantage that phase of prior art
Together, will not be described here.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, the illustrative examples of the present invention and
Which is illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the throttle control method of the dual fuel engine described in the embodiment of the present invention；
Fig. 2 is the logical schematic of the throttle control method of the dual fuel engine described in the embodiment of the present invention；
Fig. 3 is the structured flowchart of the air throttle control system of the dual fuel engine described in the embodiment of the present invention；
Fig. 4 is the structured flowchart of the air throttle control system of the dual fuel engine described in another embodiment of the present invention.
Description of reference numerals：
The air throttle control system of 300- dual fuel engines, 310- detection modules, 320- judge modules, 330- control modules,
321- detector units, 322- identifying units.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment and the feature in embodiment in the present invention can be mutually combined.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Fig. 1 is the flow chart of the throttle control method of the dual fuel engine according to one embodiment of the invention.
In the following description, dual fuel engine refers to the dual fuel engine of two kinds of fuel of gasoline and diesel oil.
As shown in figure 1, the throttle control method of dual fuel engine according to an embodiment of the invention, comprises the steps：
S101：The gentle oil temperature of detection engine water.
Specifically, the gentle oil temperature of engine water can be detected respectively by temperature sensor.
S102：If engine water temperature is more than the first predetermined temperature and oil temperature is more than the second predetermined temperature, determine whether
Whether vehicle is in sliding state.
In one embodiment of the invention, the first predetermined temperature can be 75 DEG C to 85 DEG C, and the second predetermined temperature can be for 85 DEG C extremely
95℃.Wherein, the first predetermined temperature and the second predetermined temperature are respectively water temperature and oil temperature of the engine in normal operation,
When engine water temperature is more than the first predetermined temperature and oil temperature is more than the second predetermined temperature, fuel more fully can fire
Burn.In one particular embodiment of the present invention, if engine water temperature is more than 80 DEG C and oil temperature is more than 90 DEG C, enter
Whether one step judges vehicle in sliding state.
Specifically, brake signal and signal for faster are can detect, if being not detected by brake signal and signal for faster, judges car
Be in sliding state；If detecting brake signal or signal for faster, judge that vehicle is not in sliding state.It should be appreciated that
When vehicle not being accelerated and being braked, vehicle is in sliding state.
S103：If vehicle is in sliding state, control air throttle is opened, and determines the opening time according to intake air temperature.
When vehicle is in sliding state, engine stop oil spout, i.e. engine are in towing astern state, if now opening double fuel
The air throttle of engine, can reduce towing astern resistance, reduce the loss of towing astern resistance, so as to vehicle sliding can be made farther.Therefore,
If vehicle is in sliding state, can control air throttle and open.
Meanwhile, the intake air temperature of air throttle can be detected by temperature sensor, and the opening time is determined according to intake air temperature.
S104：After the opening time of air throttle reaches the opening time, closed throttle is controlled.
Terminate sliding state in vehicle and start to accelerate, or after the rotating speed of engine is reduced to idling speed, engine oil spout again.
It should be appreciated that after air throttle is opened, the air that the heat in engine cylinder constantly can be passed in and out absorbs, therefore engine vapour
Temperature in cylinder can be gradually lowered.If engine again oil spout when cylinder in temperature it is relatively low, fuel combustion can be caused not fill
Point, the problems such as so as to cause oil consumption raising and exhaust pollutant discharge capacity to increase.
Therefore, while opening throttle is to reduce towing astern resistance, the temperature that should also be prevented from engine cylinder is relatively low.For
Opening time described in step S103, it will be appreciated that the temperature in the engine cylinder meets the condition of full combustion of fuel
Under, the opening time is longer, and vehicle sliding must be more remote.
It is appreciated that the air themperature into engine cylinder is higher, the heat that single turnover air absorbs is less, so as to start
Temperature in machine cylinder reduces slower.Therefore, intake air temperature is higher, and the opening time is longer.One in the present invention is embodied as
In example, intake air temperature and open-interval corresponding relation curve map can be formulated such that it is able to determine the opening time more conveniently.
As intake air temperature and open-interval corresponding relation are affected by the design parameter and performance etc. of dual fuel engine, the curve map
Not unique, here does not provide specific curve map.
Additionally, to reduce the load of motor vehicle braking system and improving the braking effect of vehicle, in one embodiment of the invention,
Also proposed the control method to air throttle when vehicle is braked.Specifically, dual fuel engine according to embodiments of the present invention
Throttle control method, may also include：When the vehicle is braked, closed throttle is controlled.
When vehicle is in sliding state, engine stop oil spout, i.e. engine are in towing astern state, if now closing double fuel
The air throttle of engine, it is possible to increase towing astern resistance such that it is able to reduce the load of motor vehicle braking system and improve the braking effect of vehicle
Really.In one embodiment of the invention, whether can be operated to judge whether vehicle is braked according to brake pedal.
In one particular embodiment of the present invention, the throttle control side of the dual fuel engine of the summary embodiment of the present invention
Method, is obtained the logical schematic of control method as shown in Figure 2.
The throttle control method of dual fuel engine according to embodiments of the present invention, meets pre- in the gentle oil temperature of engine water
During fixed condition, whether vehicle is can determine whether in sliding state, and control air throttle is opened when vehicle is in sliding state, thus,
Can be in vehicle sliding, by opening throttle reducing the towing astern resistance of dual fuel engine such that it is able to reduce the wave of the energy
Take；Meanwhile, after air throttle opens a period of time, closed throttle is can control, thus, the temperature in dual fuel engine can be made
Degree meets the condition of full combustion of fuel all the time such that it is able to reduce oil consumption, reduces the discharge capacity of exhaust pollutant.
To realize above-described embodiment, the present invention also proposes a kind of air throttle control system of dual fuel engine.
Fig. 3 is the structured flowchart of the air throttle control system of dual fuel engine according to an embodiment of the invention.Such as Fig. 3 institutes
Show, the air throttle control system 300 of the dual fuel engine of the embodiment of the present invention, including：Detection module 310, judge module
320 and control module 330.
Wherein, detection module 310 is used to detect the gentle oil temperature of engine water.Judge module 320 is in engine water temperature
More than the first predetermined temperature and when oil temperature is more than the second predetermined temperature, judge that whether vehicle is in sliding state.Control module
330 for when judge module judges that vehicle is in sliding state, control air throttle is opened, and is opened according to intake air temperature determination
Open the time, and after the opening time of air throttle reaches the opening time, control closed throttle.
The air throttle control system of dual fuel engine according to embodiments of the present invention, meets pre- in the gentle oil temperature of engine water
During fixed condition, whether vehicle is can determine whether in sliding state, and control air throttle is opened when vehicle is in sliding state, thus,
Can be in vehicle sliding, by opening throttle reducing the towing astern resistance of dual fuel engine such that it is able to reduce the wave of the energy
Take；Meanwhile, after air throttle opens a period of time, closed throttle is can control, thus, the temperature in dual fuel engine can be made
Degree meets the condition of full combustion of fuel all the time such that it is able to reduce oil consumption, reduces the discharge capacity of exhaust pollutant.
In one embodiment of the invention, control module 330 is additionally operable to：When vehicle is braked, closed throttle is controlled.
As shown in figure 4, the air throttle control system of dual fuel engine according to embodiments of the present invention, judge module 320 includes：
Detector unit 321 and identifying unit 322.Detector unit 321 is used for detection braking signal and signal for faster.Identifying unit 322
If brake signal and signal for faster are not detected by for detector unit 321, judge that vehicle is in sliding state；If inspection
Survey unit 321 and detect brake signal or signal for faster, then judge that vehicle is not in sliding state.
In one embodiment of the invention, intake air temperature is higher, and the opening time is longer.
It should be noted that the specific implementation of the air throttle control system of the dual fuel engine of the embodiment of the present invention with this
The specific implementation of the throttle control method of the dual fuel engine of bright embodiment is similar to, and specifically refers to retouching for method part
State, in order to reduce redundancy, do not repeat herein.
Further, embodiment of the invention discloses that a kind of vehicle, the dual fuel engine being provided with as described in above-mentioned embodiment
Air throttle control system.The vehicle can reduce oil consumption, reduce the discharge capacity of exhaust pollutant, and then lift the market of vehicle
Competitiveness.
In addition, other of vehicle according to embodiments of the present invention are constituted and are acted on for the ordinary skill in the art all
It is known, in order to reduce redundancy, does not repeat.
Presently preferred embodiments of the present invention is the foregoing is only, it is not to limit the present invention, all in the spiritual and former of the present invention
Within then, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of throttle control method of dual fuel engine, it is characterised in that comprise the following steps：
The gentle oil temperature of detection engine water；
If the engine water temperature is more than the first predetermined temperature and the oil temperature is more than the second predetermined temperature, further sentence
Whether disconnected vehicle is in sliding state；
If the vehicle is in the sliding state, controls the air throttle and open, and when determining unlatching according to intake air temperature
Between；
After the opening time of the air throttle reaches the opening time, the closed throttle is controlled.
2. the throttle control method of dual fuel engine according to claim 1, it is characterised in that also include：When
When the vehicle is braked, the closed throttle is controlled.
3. the throttle control method of dual fuel engine according to claim 1, it is characterised in that the judgement car
Sliding state whether is in, is specifically included：
Detection braking signal and signal for faster；
If being not detected by the brake signal and the signal for faster, judge that the vehicle is in the sliding state；
If detecting the brake signal or the signal for faster, judge that the vehicle is not in the sliding state.
4. the throttle control method of dual fuel engine according to claim 1, it is characterised in that it is described enter temperature
Degree is higher, and the opening time is longer.
5. the throttle control method of the dual fuel engine according to any one of claim 1-4, it is characterised in that institute
The first predetermined temperature is stated for 75 DEG C to 85 DEG C, second predetermined temperature is 85 DEG C to 95 DEG C.
6. a kind of air throttle control system of dual fuel engine, it is characterised in that include：
Detection module (310), for detecting the gentle oil temperature of engine water；
Judge module (320), it is pre- more than second for being more than the first predetermined temperature and the oil temperature in the engine water temperature
When constant temperature is spent, judge vehicle whether in sliding state；
Control module (330), for when the judge module judges that vehicle is in the sliding state, controlling the solar term
Door is opened, and determines the opening time according to intake air temperature, and after the opening time of the air throttle reaches the opening time,
Control the closed throttle.
7. the air throttle control system of dual fuel engine according to claim 6, it is characterised in that the control mould
Block (330) is additionally operable to：When the vehicle is braked, the closed throttle is controlled.
8. the air throttle control system of dual fuel engine according to claim 6, it is characterised in that the judgement mould
Block (320) includes：
Detector unit (321), for detection braking signal and signal for faster；
Identifying unit (322), if being not detected by the brake signal and the acceleration for the detector unit (321)
Signal, then judge the vehicle in the sliding state, if the detector unit (321) detects the brake signal
Or the signal for faster, then judge that the vehicle is not in the sliding state.
9. the air throttle control system of dual fuel engine according to claim 6, it is characterised in that it is described enter temperature
Degree is higher, and the opening time is longer.
10. a kind of vehicle, it is characterised in that the solar term just like the dual fuel engine described in any one of claim 6-9 are set
Accelerator control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627130.2A CN106555679B (en) | 2015-09-28 | 2015-09-28 | Throttle control method, system and the vehicle of dual fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627130.2A CN106555679B (en) | 2015-09-28 | 2015-09-28 | Throttle control method, system and the vehicle of dual fuel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106555679A true CN106555679A (en) | 2017-04-05 |
| CN106555679B CN106555679B (en) | 2019-10-01 |
Family
ID=58415582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510627130.2A Active CN106555679B (en) | 2015-09-28 | 2015-09-28 | Throttle control method, system and the vehicle of dual fuel engine |
Country Status (1)
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199933A (en) * | 1986-02-26 | 1987-09-03 | Mazda Motor Corp | Intake device for engine |
| JPH09226412A (en) * | 1996-02-21 | 1997-09-02 | Nissan Motor Co Ltd | Driving force control device of vehicle |
| CN1373831A (en) * | 1999-09-14 | 2002-10-09 | 大众汽车有限公司 | Device and method for operating IC engine provided with butterfly valve in overrum mode |
| CN101180460A (en) * | 2005-08-22 | 2008-05-14 | 丰田自动车株式会社 | Control system and control method for internal combustion engine equipped with supercharger |
| CN101539060A (en) * | 2008-03-18 | 2009-09-23 | 通用汽车环球科技运作公司 | Engine control during coasting events |
| JP2010071205A (en) * | 2008-09-19 | 2010-04-02 | Nissan Motor Co Ltd | Control device of internal combustion engine |
| CN101988437A (en) * | 2009-07-30 | 2011-03-23 | 福特环球技术公司 | Sliding operation method of motor vehicle and motor vehicle driving unit for implementing the method |
| CN103696857A (en) * | 2013-12-19 | 2014-04-02 | 安徽长丰扬子汽车制造有限责任公司 | Electronic throttle valve device for electric vehicle range extender and control method |
-
2015
- 2015-09-28 CN CN201510627130.2A patent/CN106555679B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199933A (en) * | 1986-02-26 | 1987-09-03 | Mazda Motor Corp | Intake device for engine |
| JPH09226412A (en) * | 1996-02-21 | 1997-09-02 | Nissan Motor Co Ltd | Driving force control device of vehicle |
| CN1373831A (en) * | 1999-09-14 | 2002-10-09 | 大众汽车有限公司 | Device and method for operating IC engine provided with butterfly valve in overrum mode |
| CN101180460A (en) * | 2005-08-22 | 2008-05-14 | 丰田自动车株式会社 | Control system and control method for internal combustion engine equipped with supercharger |
| CN101539060A (en) * | 2008-03-18 | 2009-09-23 | 通用汽车环球科技运作公司 | Engine control during coasting events |
| JP2010071205A (en) * | 2008-09-19 | 2010-04-02 | Nissan Motor Co Ltd | Control device of internal combustion engine |
| CN101988437A (en) * | 2009-07-30 | 2011-03-23 | 福特环球技术公司 | Sliding operation method of motor vehicle and motor vehicle driving unit for implementing the method |
| CN103696857A (en) * | 2013-12-19 | 2014-04-02 | 安徽长丰扬子汽车制造有限责任公司 | Electronic throttle valve device for electric vehicle range extender and control method |
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| Publication number | Publication date |
|---|---|
| CN106555679B (en) | 2019-10-01 |
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