CN102678357A - Oil injection control system and oil injection control method - Google Patents
Oil injection control system and oil injection control method Download PDFInfo
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- CN102678357A CN102678357A CN2012101768419A CN201210176841A CN102678357A CN 102678357 A CN102678357 A CN 102678357A CN 2012101768419 A CN2012101768419 A CN 2012101768419A CN 201210176841 A CN201210176841 A CN 201210176841A CN 102678357 A CN102678357 A CN 102678357A
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- 238000002347 injection Methods 0.000 title claims abstract description 64
- 239000007924 injection Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005457 optimization Methods 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims description 58
- 239000007943 implant Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 4
- 239000003921 oil Substances 0.000 description 29
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention discloses an oil injection control system which is used for controlling oil injection quantity of an oil injector. The oil injection control system comprises a sensor, an optimizer and a controller, wherein the sensor can detect air mass flow or air pressure and generate a detection value U1, the optimizer receives the detection value U1, optimizes the detection value U1 through an optimization program stored inside and outputs an optimization value U2, and the controller receives the optimization value U2 and controls the oil injection quantity of the oil injector according to the optimization value U2. Under the effect of certain objective factors, the detection value U1 of the sensor is slight big, the optimization value obtained after optimization is close to an ideal value, compared with un-optimized oil injection quantity, the oil injection quantity of the oil injector controlled through the optimization value U2 is less, and actually-entered air flow has no change, so that burning is sufficient. Compared with the prior art, gasoline is saved, and discharge quantity of pollutant is reduced. The invention further discloses an oil injection control method.
Description
Technical field
The present invention relates to the engine control system technical field, particularly a kind of fuel injection control system and method.
Background technique
It is that the fuel injection control system that is fixed against automotive interior is accomplished that automobile is accomplished the oil spout This move, and generally speaking, its fuel injection control system comprises: sensor, controller and final controlling element.Parameters index in the sensor in real time monitoring automobile, for example, air flow sensor is the sensor that each moment inhaled air flow is converted into voltage signal.Controller is accepted the electrical signal that this sensor is sent here, and according to these signals, draws the pairing fuel injection quantity of motor under the current this air mass flow, thereby this instruction is inputed to final controlling element, an amount of gasoline of final controlling element control oil sprayer ejection.
Air flow sensor in the market or air pressure probe can satisfy the usage requirement of present automobile basically; Yet; Under the influence of some objective factor, the actual output voltage of sensor is bigger than normal, and promptly the current air mass flow of its representative or air pressure are also bigger than normal; The fuel injection quantity that causes controller to draw is bigger than normal, thereby the gasoline of ejection is on the high side.Can know that will directly cause gasoline more like this, air mass flow be less, thereby gasoline combustion being insufficient, is a kind of waste to the gasoline resource on the one hand; On the other hand, increased the discharge amount of pollutant.
Therefore, how fuel injection control system of the prior art being made improvement, thereby reach the purpose of energy-saving and emission-reduction, is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of fuel injection control system, and this fuel injection control system can reach the purpose of energy-saving and emission-reduction.
For solving the problems of the technologies described above, the invention provides a kind of fuel injection control system, be used for the fuel injection quantity of oil sprayer is controlled, comprising:
Detect air mass flow or air pressure and generate checkout value U
1Sensor;
Receive said checkout value U
1And output optimal value U
2Optimizer:
Receive said optimal value U
2And according to said optimal value U
2Control the controller of the fuel injection quantity of said oil sprayer;
Wherein,
U
2=k*U
1*(1-1/e^t)；
T is a measurement time; K is outside optimization coefficient and the k < 1 that implants.
Preferably, said controller is the ECU controller.
With respect to existing technology, beneficial effect of the present invention is:
Fuel injection control system provided by the invention is used for the fuel injection quantity of oil sprayer is controlled, and comprises sensor, optimizer and controller.Wherein, sensor can detect and generate checkout value U to air mass flow or air pressure (the present invention is example with the air mass flow)
1, optimizer receives this checkout value U
1, and the optimizer through its storage inside is to this checkout value U
1Be optimized, and output optimal value U
2Controller receives this optimal value U
2, and according to this optimal value U
2Control the fuel injection quantity of oil sprayer.
Wherein,
U
2=k*U
1*(1-1/e^t)；
T is a measurement time; K is outside optimization coefficient and the k < 1 that implants.
Can know that under the influence of some objective factor, the actual output voltage of sensor is bigger than normal, i.e. this checkout value U
1Be a value bigger than normal, this checkout value U
1After above-mentioned optimizer is optimized, the value of being optimized U
2, can know U through following formula
2<u
1, i.e. this optimal value U
2More near ideal value, controller receives this optimal value U
2, and according to this optimal value U
2Fuel injection quantity to oil sprayer is controlled, because U
2<u
1, so the minimizing of controller judgement air mass flow, in order to guarantee air fuel ratio; The fuel injection quantity of controller control oil sprayer is also little through the fuel injection quantity of optimizing with respect to not, and the actual air mass flow that gets into does not change, therefore; Burning will be more abundant; With respect to existing technology, on the one hand, practiced thrift gasoline; On the other hand, reduced the discharge amount of pollutant.
In sum, fuel injection control system provided by the invention is optimized, and can reach the purpose of energy-saving and emission-reduction.
The present invention also provides a kind of fuel injection control method, comprises step:
A: sensor air mass flow or air pressure also generate checkout value U
1
B: optimizer receives said checkout value U
1, and output optimal value U
2:
C: controller receives said optimal value U
2, and according to said optimal value U
2Control said oil sprayer oil spout;
Wherein,
U
2=k*U
1*(1-1/e^t)；
The time of t for measuring; K is outside optimization coefficient and the k < 1 that implants.
Preferably, said controller is the ECU controller.
Can know that fuel injection control method provided by the invention is at first through sensor air mass flow or air pressure and generate checkout value U
1Receive this checkout value U by optimizer then
1, and output optimal value U
2Last controller receives above-mentioned optimal value U
2, and according to optimal value U
2The oil spout of control oil sprayer;
Wherein,
U
2=k*U
1*(1-1/e^t)；
The time of t for measuring; K is outside optimization coefficient and the k < 1 that implants.
Through the enforcement item by item of above-mentioned steps, fuel injection control method provided by the invention can be optimized fuel injection control system, thereby reaches the purpose of energy-saving and emission-reduction.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is the structural representation of fuel injection control system provided by the invention;
Fig. 2 is that air flow sensor output voltage characteristic curve contrasts schematic representation before and after adding optimizer in the fuel injection control system;
Fig. 3 is that oil consumption contrasts schematic representation before and after adding optimizer in the fuel injection control system;
Fig. 4 is that power contrasts schematic representation before and after adding optimizer in the fuel injection control system.
Embodiment
Core of the present invention is for providing a kind of fuel injection control system, and this fuel injection control system can reach the purpose of energy-saving and emission-reduction.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of fuel injection control system provided by the invention; Fig. 2 is that air flow sensor output voltage characteristic curve contrasts schematic representation before and after adding optimizer in the fuel injection control system.
As shown in Figure 1, fuel injection control system provided by the invention is used for the fuel injection quantity of oil sprayer is controlled, and comprises sensor, optimizer and controller.Wherein, sensor can detect and generate checkout value U to air mass flow or air pressure (the present invention is example with the air mass flow)
1, optimizer receives this checkout value U
1, and the optimizer through its storage inside is to this checkout value U
1Be optimized, and output optimal value U
2Controller receives this optimal value U
2, and according to this optimal value U
2Control the fuel injection quantity of oil sprayer.
Wherein,
U
2=k*U
1*(1-1/e^t)；
T is a measurement time; K is outside optimization coefficient and the k < 1 that implants.
Can know that under the influence of some objective factor, the actual output voltage of sensor is bigger than normal.As shown in Figure 2, wherein the voltage response of optimizer air flow sensor is before added in the dotted line representative, and the voltage response of the air flow sensor after the optimizer is added in the solid line representative.Obviously, dotted line also can be represented checkout value U
1, this checkout value U
1Be a value bigger than normal, this checkout value U
1After above-mentioned optimizer is optimized, the value of being optimized U
2, can know U through following formula
2<u
1, i.e. this optimal value U
2More near ideal value, controller receives this optimal value U
2, and according to this optimal value U
2Fuel injection quantity to oil sprayer is controlled, because U
2<u
1, so the minimizing of controller judgement air mass flow, in order to guarantee air fuel ratio; The fuel injection quantity of controller control oil sprayer is also little through the fuel injection quantity of optimizing with respect to not, and the actual air mass flow that gets into does not change, therefore; Burning will be more abundant; Thereby can make automobile obtain good power performance, and fuel oil is fully burned, correspondingly reduce the discharge amount of pollutant.
In sum, fuel injection control system provided by the invention is optimized, and can reach the purpose of energy-saving and emission-reduction.
Please refer to Fig. 3-Fig. 4, Fig. 3 is that oil consumption contrasts schematic representation before and after adding optimizer in the fuel injection control system; Fig. 4 is that power contrasts schematic representation before and after adding optimizer in the fuel injection control system.
Obviously can know that by Fig. 3 and Fig. 4 fuel injection control system provided by the invention can effectively lower oil consumption, promote power.
Particularly, above-mentioned controller is ECU (Electronic Control Unit, an electronic control unit) controller.Particularly, the checkout value U of the reaction air mass flow of above-mentioned air flow sensor generation
1Be a magnitude of voltage, this checkout value U
1Output optimal value U after optimizer optimization
2, ECU receives this optimal value U
2, according to the processing circuit of storage inside, send the control corresponding instruction, the oil mass that the air mass flow under the ejection of control oil sprayer and this operating mode adapts to the oil sprayer that is attached thereto.Certain above-mentioned controller ECU can also replace through other control apparatus, for example PLC control circuit etc.
The present invention also provides a kind of fuel injection control method, at first through sensor air mass flow or air pressure and generate checkout value U
1Receive this checkout value U by optimizer then
1, and output optimal value U
2Last controller receives above-mentioned optimal value U
2, and according to optimal value U
2The oil spout of control oil sprayer;
Wherein,
U
2=k*U
1*(1-1/e^t)；
The time of t for measuring; K is outside optimization coefficient and the k < 1 that implants.
Can know that under the influence of some objective factor, the actual output voltage of sensor is bigger than normal.As shown in Figure 2, wherein the voltage response of optimizer air flow sensor is before added in the dotted line representative, and the voltage response of the air flow sensor after the optimizer is added in the solid line representative.Obviously, dotted line also can be represented checkout value U
1, this checkout value U
1Be a value bigger than normal, this checkout value U
1The value of being optimized U after above-mentioned optimizer optimization
2, can know U through following formula
2<u
1, i.e. this optimal value U
2More near ideal value, controller receives this optimal value U
2, and according to this optimal value U
2Fuel injection quantity to oil sprayer is controlled, because U
2<u
1, so the minimizing of controller judgement air mass flow, in order to guarantee air fuel ratio; The fuel injection quantity of controller control oil sprayer is also little through the fuel injection quantity of optimizing with respect to not, and the actual air mass flow that gets into does not change, therefore; Burning will be more abundant; Thereby can make automobile obtain good power performance, and fuel oil is fully burned, correspondingly reduce the discharge amount of pollutant.
Promptly through the enforcement item by item of above-mentioned steps, fuel injection control method provided by the invention can be optimized fuel injection control system, thereby reaches the purpose of energy-saving and emission-reduction.
Particularly, above-mentioned controller is ECU (Electronic Control Unit, an electronic control unit) controller.Particularly, the checkout value U of the reaction air mass flow of above-mentioned air flow sensor generation
1Be a magnitude of voltage, this checkout value U
1Output optimal value U after optimizer optimization
2, ECU receives this optimal value U
2, according to the processing circuit of storage inside, send the control corresponding instruction, the oil mass that the air mass flow under the ejection of control oil sprayer and this operating mode adapts to the oil sprayer that is attached thereto.Certain above-mentioned controller ECU can also replace through other control apparatus, for example PLC control circuit etc.
More than a kind of fuel injection control system provided by the present invention and method are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (4)
1. a fuel injection control system is used for the fuel injection quantity of oil sprayer is controlled, and it is characterized in that, comprising:
Detect air mass flow or air pressure and generate checkout value U
1Sensor;
Receive said checkout value U
1And output optimal value U
2Optimizer:
Receive said optimal value U
2, and according to said optimal value U
2Control the controller of the fuel injection quantity of said oil sprayer;
Wherein,
U
2=k*U
1*(1-1/e^t)；
T is a measurement time; K is outside optimization coefficient and the k < 1 that implants.
2. fuel injection control system according to claim 1 is characterized in that, said controller is the ECU controller.
3. a fuel injection control method is used for the fuel injection quantity of oil sprayer is controlled, and it is characterized in that, comprises step:
A: sensor air mass flow or air pressure also generate checkout value U
1
B: optimizer receives said checkout value U
1, and output optimal value U
2
C: controller receives said optimal value U
2, and according to said optimal value U
2Control said oil sprayer oil spout;
Wherein,
U
2=k*U
1*(1-1/e^t)；
The time of t for measuring; K is outside optimization coefficient and the k < 1 that implants.
4. fuel injection control method according to claim 3 is characterized in that, said controller is the ECU controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176841.9A CN102678357B (en) | 2012-05-31 | 2012-05-31 | A kind of fuel injection control system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176841.9A CN102678357B (en) | 2012-05-31 | 2012-05-31 | A kind of fuel injection control system and method |
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| Publication Number | Publication Date |
|---|---|
| CN102678357A true CN102678357A (en) | 2012-09-19 |
| CN102678357B CN102678357B (en) | 2015-09-02 |
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ID=46810812
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| CN201210176841.9A Active CN102678357B (en) | 2012-05-31 | 2012-05-31 | A kind of fuel injection control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004390A (en) * | 2015-07-24 | 2015-10-28 | 天津海泰科科技有限公司 | Apparatus and method for measuring air flow of oil spray nozzle of indirect-injection diesel engine |
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| US6814060B1 (en) * | 2003-09-26 | 2004-11-09 | General Motors Corporation | Engine emission control system and method |
| CN101080561A (en) * | 2004-12-17 | 2007-11-28 | 丰田自动车株式会社 | Apparatus and method for controlling internal combustion engine |
| CN101236101A (en) * | 2007-01-31 | 2008-08-06 | 株式会社电装 | Air flow quantity correcting device |
| CN101825028A (en) * | 2010-03-23 | 2010-09-08 | 深圳市中显微电子有限公司 | Automobile engine and electric control fuel economizer thereof |
| CN102062005A (en) * | 2010-12-30 | 2011-05-18 | 天津锐意泰克汽车电子有限公司 | Method for calculating air intake flow and air intake pressure of engine |
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2012
- 2012-05-31 CN CN201210176841.9A patent/CN102678357B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814060B1 (en) * | 2003-09-26 | 2004-11-09 | General Motors Corporation | Engine emission control system and method |
| CN101080561A (en) * | 2004-12-17 | 2007-11-28 | 丰田自动车株式会社 | Apparatus and method for controlling internal combustion engine |
| CN101236101A (en) * | 2007-01-31 | 2008-08-06 | 株式会社电装 | Air flow quantity correcting device |
| CN101825028A (en) * | 2010-03-23 | 2010-09-08 | 深圳市中显微电子有限公司 | Automobile engine and electric control fuel economizer thereof |
| CN102062005A (en) * | 2010-12-30 | 2011-05-18 | 天津锐意泰克汽车电子有限公司 | Method for calculating air intake flow and air intake pressure of engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004390A (en) * | 2015-07-24 | 2015-10-28 | 天津海泰科科技有限公司 | Apparatus and method for measuring air flow of oil spray nozzle of indirect-injection diesel engine |
| CN105004390B (en) * | 2015-07-24 | 2017-12-22 | 天津海泰科科技有限公司 | Between spray formula diesel engine atomizer air-flow measurement apparatus and method |
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| CN102678357B (en) | 2015-09-02 |
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Effective date of registration: 20170410 Address after: 400020 Chongqing Jiangbei District, the first floor of the new East Road, No. 90 Patentee after: CHONGQING RUIYANG TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 401147 Chongqing City, Yubei District Road No. 88 Building 2 15-2 purple Patentee before: Jiang Guoqing |
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