CN101655043A - Realizing method of ECU software boosted by using a plurality of spraying interval short pulses - Google Patents
Realizing method of ECU software boosted by using a plurality of spraying interval short pulses Download PDFInfo
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- CN101655043A CN101655043A CN200910204973A CN200910204973A CN101655043A CN 101655043 A CN101655043 A CN 101655043A CN 200910204973 A CN200910204973 A CN 200910204973A CN 200910204973 A CN200910204973 A CN 200910204973A CN 101655043 A CN101655043 A CN 101655043A
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Abstract
The invention relates to a realizing method of electric control unit ECU software boosted by a plurality of spraying interval short pulses, belonging to the electric control field of engines. Sprayingintervals of a multi-cylinder engine are utilized to trigger a certain number of short pulses on high-speed electromagnetic valves of other non-spray cylinders after the former cylinder completes thespraying, and to trigger once short pulse on high-speed electromagnetic valves of other non-spray cylinders after the next cylinder before the next cylinder is sprayed, and actions are circulated, short pulses generate pulse current, reverse self induction electromotive force generated in descending by using the pulse current to charge an energy storage capacitor, voltage in opening the high-speed electromagnetic valves is raised to a rated value, and the high-speed electromagnetic valves are rapidly opened. The invention is suitable to any engine requiring high-voltage fuel spraying.
Description
Technical field
The present invention is applicable to electrical control system for engine fuel injection control high-speed electromagnetic valve driver circuit, is particularly suitable for the high-tension boost control of diesel electric-controlled system.
Background technique
In the diesel electric-controlled fuel injection system, usually use the high-speed power electromagnetic valve high pressure fuel injection moment and emitted dose, in order to open solenoid valve fast, usually need a power supply that is higher than diesel engine electric system voltage, it is the high drive power supply, after solenoid valve was opened, the opening state of being kept solenoid valve by the electric system voltage source finished up to spraying.
And industry-wide adoption is that independently the hardware circuit of " inductance---electric capacity---switch " is finished the process of boosting.This just needs one and has certain energy-storage reactor, a power switch pipe, the pulse generating circuit of a feedback controllable duty ratio with voltage and a cylinder energy-storage capacitor circuit.
Number of patent application 200910174095.3 (publication number 1041424222A), denomination of invention is a self-lifting high-pressure generating circuit for engine fuel injection control solenoid valve, a kind of new circuit for producing high voltage is provided, the electromagnet that utilizes diesel electric-controlled fuel injection system high speed power electromagnet valve is as the energy storage inductor that boosts, utilize the switch of the switching circuit of electronic Control for Diesel Engine unit drives solenoid valve as charge pumping circuit, utilize the principle of multi-cylinder diesel engine timesharing control, realize self-lifting high-pressure generating circuit for engine fuel injection control solenoid valve.
Summary of the invention
The present invention is on the basis of 200910174095.3 patents at application number, the electromagnet of cylinder that will spray the period in difference by software design by certain time sequence as energy storage inductor, alternate energisation and shutoff form the self-induction high pressure, high-speed electromagnetic valve necessary high voltages when opening are pressed be lifted to rating value.
Technical solution of the present invention is as follows:
Steps A: short burst sprays at a last cylinder to be finished, and judges whether current high voltage is higher than amount voltage.If be higher than voltage rating, then do not need to trigger short burst, just trigger short burst if be lower than voltage rating, the triggering of short burst is carried out on the high-speed electromagnetic valve of injection cylinder not.The action of this step is referred to as " process complementary energy ".
Step B: short burst is carried out the back that ascertains the number continuously and is finished.
Step C: a period of time before next cylinder sprays judges whether current high voltage is higher than voltage rating, if be higher than voltage rating then do not need to trigger short burst, if be lower than voltage rating then carry out the triggering of short burst, the triggering of short burst is carried out on the high-speed electromagnetic valve of injection cylinder not.The action of this step is referred to as " preposition complementary energy ".
Every cylinder sprays the back circulation and carries out above-mentioned steps.
Wherein: the burst length of short burst and the pulse spacing of short burst, carry out the one-dimensional linear interpolation according to the electric system magnitude of voltage and obtain, the current in short bursts peak value need be lower than 5A, and the current in short bursts valley need be at 0A.
By the pulse duty time of adjustment short burst and the pulse spacing of short burst peak value and valley are adjusted.
Utilize the short burst peak value high-voltage energy storage capacitor to be charged to the self induction electromotive force of the electric current decline generation of valley.
The interpolation scope of electric system voltage: the 12V electric system: 9V is to 16V; 24V electric system 18V is to 32V.
Wherein, ejection cylinder is not the cylinder except that short burst triggers cylinder and next ejection cylinder.The cylinder of effect selection that boosts according to reality carries out the triggering of short burst, perhaps selects a plurality of cylinders to carry out short burst and triggers, and reduces the injection interval that short burst takies as far as possible, guarantees that the time of injection interval is enough used under the high rotating speed of motor.
Wherein: the number of short burst carries out the one-dimensional linear interpolation according to the electric system magnitude of voltage and obtains, and engine speed value carries out the correction of one dimension interpolation multiple.When high voltage was equal with voltage rating, the number of short burst was determined.
The invention has the beneficial effects as follows that under the situation that does not change hardware circuit by the software control design high voltage is risen to 50V to 80V even higher, validity is higher and cost is lower.
Description of drawings
Fig. 1: the complementary energy of boosting schematic representation.
Fig. 2: four-cylinder diesel engine complementary energy and injection schematic representation
L1-L4 represents to get angry the order 1,2,3,4 of cylinder,
Embodiment
Below in conjunction with accompanying drawing with 4 cylinder diesels, 24V electric system system, the high pressure 50V that boosts is that example describes:
4 cylinder diesels basis is the selection principle of ejection cylinder not, can provide two cylinders to carry out the triggering of short burst.In order to reach the short as far as possible short burst time, use two cylinders trigger method simultaneously.Every cylinder judges that whether current high voltage is less than 50V after spraying and finishing, if less than 50V, then trigger short burst, it is as follows to trigger the cylinder preface: triggering 3 cylinders and 4 cylinders carried out the triggering of short burst after 1 cylinder sprayed and finishes, 2 cylinders spray the triggering that the short burst of 4 cylinders and 1 cylinder is triggered in the back that finishes, 3 cylinders spray the short burst that triggers 1 cylinder and 2 cylinders in the back that finishes to be triggered, and 4 cylinders spray the triggering that the short burst of 2 cylinders and 3 cylinders is triggered in the back that finishes." process complementary energy " as shown in Figure 1.
Whether next cylinder at first judges current high voltage less than 50V before spraying, if just trigger individual pulse one time less than 50V.The triggering cylinder preface of individual pulse is as follows: use 4 cylinders to trigger a short burst before 1 cylinder sprays, use 1 cylinder to trigger a short burst before 2 cylinders spray, use 2 cylinders to trigger a short burst before 3 cylinders spray, use 3 cylinders to trigger a short burst before 4 cylinders spray." preposition complementary energy " as shown in drawings.
The present invention is that example describes with 4 cylinder diesels, but the present invention is not limited to this, can expand to the above motor of any three cylinders.The high voltage of indication of the present invention is that example describes with 50V, but the invention is not restricted to this, can be by modification short burst number, and the burst length of short burst and applied in short pulse intervals time, high voltage is risen to 50V to 80V, in addition higher.
Claims (6)
1. an ECU software implementation method that utilizes a plurality of injection interval short bursts to boost is characterized in that this method comprises the steps:
A: short burst sprays at a last cylinder to be finished, and judges whether current high voltage is higher than amount voltage.If be higher than voltage rating, then do not need to trigger short burst, just trigger short burst if be lower than voltage rating, the triggering of short burst is carried out on the high-speed electromagnetic valve of injection cylinder not.
B: short burst is carried out the back that ascertains the number continuously and is finished.
C: a period of time before next cylinder sprays judges whether current high voltage is higher than voltage rating, if be higher than voltage rating then do not need to trigger short burst, if be lower than voltage rating then carry out the triggering of short burst, the triggering of short burst is carried out on the high-speed electromagnetic valve of injection cylinder not.
Every cylinder sprays the back circulation and carries out above-mentioned steps.
2. the ECU software implementation method that utilizes a plurality of injection interval short bursts to boost according to claim 1 is characterized in that electric system voltage increases, and then the burst length of short burst shortens, and increase the interpulse period of short burst.
3. the ECU software implementation method that utilizes a plurality of injection interval short bursts to boost according to claim 1 is characterized in that the pulse peak current＜5A of short burst, impulsive current valley point current are 0.
4. the ECU software implementation method that utilizes a plurality of injection interval short bursts to boost according to claim 1 is characterized in that, electric system voltage increases, and the short burst number reduces; Engine speed increases, and the short burst number reduces.
5. the ECU software implementation method that utilizes a plurality of injection interval short bursts to boost according to claim 1 is characterized in that when the high voltage that promotes equated with voltage rating, the short burst number was determined.
6. the ECU software implementation method that utilizes a plurality of injection interval short bursts to boost according to claim 1, injection cylinder is not the cylinder except that short burst triggers cylinder and next ejection cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910204973A CN101655043A (en) | 2009-09-30 | 2009-09-30 | Realizing method of ECU software boosted by using a plurality of spraying interval short pulses |
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| CN200910204973A CN101655043A (en) | 2009-09-30 | 2009-09-30 | Realizing method of ECU software boosted by using a plurality of spraying interval short pulses |
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| CN101655043A true CN101655043A (en) | 2010-02-24 |
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| CN200910204973A Pending CN101655043A (en) | 2009-09-30 | 2009-09-30 | Realizing method of ECU software boosted by using a plurality of spraying interval short pulses |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275699A (en) * | 2015-11-07 | 2016-01-27 | 镇江恒驰科技有限公司 | Method for calibrating electronic control common-rail oil pump test bench |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209513B1 (en) * | 1996-07-02 | 2001-04-03 | Komatsu Ltd. | Inductive load driving device and driving method |
| DE102007033045A1 (en) * | 2007-07-16 | 2009-01-29 | Continental Automotive Gmbh | Method and apparatus for dynamically determining a segment for an angular range within which fuel injection into an internal combustion engine is feasible |
| CN101424222A (en) * | 2008-11-17 | 2009-05-06 | 张育华 | Self-lifting high-pressure generating circuit for engine fuel injection control solenoid valve |
-
2009
- 2009-09-30 CN CN200910204973A patent/CN101655043A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209513B1 (en) * | 1996-07-02 | 2001-04-03 | Komatsu Ltd. | Inductive load driving device and driving method |
| DE102007033045A1 (en) * | 2007-07-16 | 2009-01-29 | Continental Automotive Gmbh | Method and apparatus for dynamically determining a segment for an angular range within which fuel injection into an internal combustion engine is feasible |
| CN101424222A (en) * | 2008-11-17 | 2009-05-06 | 张育华 | Self-lifting high-pressure generating circuit for engine fuel injection control solenoid valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275699A (en) * | 2015-11-07 | 2016-01-27 | 镇江恒驰科技有限公司 | Method for calibrating electronic control common-rail oil pump test bench |
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Application publication date: 20100224 |