CN103291483A - Method and device for preventing flameout due to sudden load increase, and electronic-control engine comprising device - Google Patents
Method and device for preventing flameout due to sudden load increase, and electronic-control engine comprising device Download PDFInfo
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- CN103291483A CN103291483A CN2013101896515A CN201310189651A CN103291483A CN 103291483 A CN103291483 A CN 103291483A CN 2013101896515 A CN2013101896515 A CN 2013101896515A CN 201310189651 A CN201310189651 A CN 201310189651A CN 103291483 A CN103291483 A CN 103291483A
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Abstract
The invention provides a method and a device for preventing flameout due to sudden load increase, and an electronic-control engine comprising the device. The method includes judging whether sudden load increase conditions are met or not and entering a condition arbitrating procedure if the sudden load increase conditions are met; judging whether idle speed boosting conditions are met or not via the condition arbitrating procedure and entering an idle speed boosting procedure if the idle speed boosting conditions are met; adding a preset deviation value to an original set idle speed value and outputting a computed set value according to a selected mode in the idle speed boosting procedure; entering an idle speed boosting withdrawing procedure when torque reaches a preset range and the rotational speed reaches the set value, and recovering the original set idle speed value. According to the scheme, the method, the device and the electronic-control engine have the advantages that the low set idle speed value is boosted instantly after sudden load increase is identified, the response time for computing sudden torque increase of the engine is shortened, and accordingly flameout due to sudden load increase of the engine is prevented; after a load is decreased, the engine can run at the speed of the original low set idle speed value, so that oil consumption is reduced.
Description
Technical field
The present invention relates to field of engine control, be specifically related to the uprush electric-control motor of anti-flameout method, device and this device of use of a kind of low idling load.
Background technique
In the running of electric-control motor, idling mode accounts for significant proportion, and the steady running of motor is very important under the control idling mode.For electric-control motor, the steady running of motor relies on ECU(Electronic Control Unit, engine electronic control unit) control.If load was uprushed when electric-control motor turned round with low idling, can not in time heighten idling, then can cause the electric-control motor rotating speed to descend, in addition flame-out.
Control strategy under the idling mode of existing electric-control motor all is closed loop control, namely rely on actual engine speed and set the moment of torsion that deviation between the rotating speed is come calculation engine, when uprushing, load can cause engine speed to descend, ECU relies on the rotating speed deviation to come the calculation engine output torque by closed loop control, have only the moment of torsion that ECU calculates when the rotating speed deviation is enough big just can overcome load, but at this moment engine speed is too low, motor can't be exported the moment of torsion that ECU calculates in full amount, finally cause engine speed to continue to descend, finally cause stopping working.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, and a kind of load anti-flameout method of uprushing is provided, and solved electric-control motor and carried out under the operating condition in low idling, flame-out phenomenon easily when load is uprushed.
Concrete technological scheme of the present invention is:
A kind of load anti-flameout method of uprushing is used for the electric-control motor under the low idling operation is controlled, and comprises following process:
Condition judgment process: when the low idling mode operation of electric-control motor, judge whether to satisfy the load condition of uprushing, if entry condition arbitrated procedure then;
Condition arbitrated procedure: judge whether to satisfy and close condition, if not, then enter the idling lifting process;
The idling lifting process: increase default deviate in former idling setting value, the idling setting value after getting a promotion, the idling setting value after the lifting is exported according to mode selected.
Further, former idling setting value increases to the way of output of the idling setting value after the lifting and is: do not carry out the slope restriction, with certain slope restriction output or variable slope restriction output.
Further, comprise also that behind described idling lifting process idling promotes the process that withdraws from: when engine loading reduces, when moment of torsion reaches preset range and rotating speed arrival setting value, recover former idling setting value and turn round.
Further, the way of output of idling setting value comprises: do not carry out the slope restriction when former idling setting value increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output; Idling setting value after former idling setting value and the lifting is all exported with certain slope restriction when increasing and reducing; Idling setting value after former idling setting value and the lifting is exported with the variable slope restriction when increasing and reducing.
Further, the described load condition of uprushing is that moment of torsion increases and rotating speed descends above predefined value.
Further, the described condition of closing is: the too high or throttle of water temperature lost efficacy or start successfully after above Preset Time.
A kind of load anti-flame device of uprushing is used for the electric-control motor under the low idling operation, comprises with lower module:
The condition judgment module is used for judging whether to satisfy the load condition of uprushing, when satisfying load and uprush condition, and the starting condition arbitration modules;
The condition arbitration modules is used for judging whether satisfying the condition of closing, and when not satisfying when closing condition, starts idling setting value computing module;
Idling setting value computing module is used for increasing default deviate, the idling setting value after getting a promotion in former idling setting value;
The idling output module is used for output idling setting value.
Further, the described load condition of uprushing is that moment of torsion increases and rotating speed descends above predefined value.
Further, the described condition of closing is: the too high or throttle of water temperature lost efficacy or start successfully after above Preset Time.
Further, the mode of described idling output module output idling setting value comprises: do not carry out the slope restriction when former idling setting value increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output; Idling setting value after former idling setting value and the lifting is all exported with certain slope restriction when increasing and reducing; Idling setting value after former idling setting value and the lifting is exported with the variable slope restriction when increasing and reducing.
A kind of electric-control motor comprises the above-mentioned load anti-flame device of uprushing.
Compared with prior art, technique scheme has following beneficial effect:
Preferred embodiment of the present invention scheme promotes low idling setting value at once after identifying load and uprushing, shortened the response time that the electric-control motor calculated torque is uprushed, thereby has overcome the generation of the flame-out situation that causes because the electric-control motor load is uprushed.
In the further preferred embodiment of the present invention, after load reduces, can control electric-control motor and get back on original low idling setting value and turn round, to reduce oil consumption.
Description of drawings
Fig. 1 is uprush anti-flameout method embodiment's 1 flow chart of the low idling load of electric-control motor of the present invention;
Fig. 2 is uprush anti-flameout method embodiment's 2 flow chart of the low idling load of electric-control motor of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Load is uprushed and is prevented flameout method embodiment 1
The anti-flameout method of uprushing of load as shown in Figure 1, be used for the electric-control motor under the low idling operation: when electric-control motor is idle to hang down, at first judge whether to satisfy the load condition of uprushing, judge just whether moment of torsion increases, whether rotating speed descends and surpass predefined value, whether there is not the condition of closing if check electric-control motor again, when nothing is closed condition, then enter idling lifting process (namely increase default deviate in former idling setting value, the idling setting value after the lifting can be exported according to mode selected).When load reduces, moment of torsion reaches preset range and rotating speed when arriving setting value, then enter the process of withdrawing from, recover former low idling setting value.
During concrete enforcement, judging whether to satisfy the load condition of uprushing, if there is not load to uprush, just moment of torsion does not increase, rotating speed do not descend, and perhaps moment of torsion increases degree, rotating speed decline degree and surpasses predefined value, then according to former low idling mode operation; When electric-control motor moves, if close condition (as water temperature too high or throttle inefficacy etc.), then according to former low idling mode operation.
Among the present invention, so-called " idling " refers to when engine running, the residing state of motor when being totally released gas pedal.Idling is the running resistance that overcomes motor itself, keeps the motor minimum speed.
Load is uprushed and is prevented flameout method embodiment 2
The anti-flameout method of uprushing of load as shown in Figure 2 is used for the genemotor under the low idling operation, and implementation step is as follows:
The electric-control motor of the slow idling that success starts, (at loader, load is uprushed and is then referred to load a large amount of goods if load is uprushed; The dump car that then refers to lade at dump car rotates), then can cause the rotating speed of motor to descend, moment of torsion increases, if rotating speed descends and slope surpasses predefined value, moment of torsion (being gathered by the moment of torsion wave filter) rises and also surpasses predefined value, then starting condition arbitrated procedure.
Among the present invention, so-called " closing condition " is mean engine in the process of running, is in the working condition of improper running, and motor makes motor carry out slow idling then for the reason of self-protection.The so-called condition of closing has: the too high and throttle inefficacy of water temperature etc.For example, when motor detects operating temperature too high (being generally 80 ℃ to 90 ℃), even motor satisfies under the low idling condition in the step 1 load and uprushes, cause the condition that rotating speed descends and moment of torsion rises, can the starting condition arbitrated procedure yet, at this moment, turn round according to the former idling setting value of motor.
Selectively, also comprise the process that judges whether to satisfy entry condition, above-mentioned entry condition comprises: use the vehicle of this motor to be in braking state, air-conditioning opening state, low cruise state, motor and be in clutch state, engine start and successfully surpass certain hour etc.
Step 3 idling lifting process: will hang down the idling setting value according to correction algorithm and promote a suitable positively biased difference.
Because the variation of load causes system dynamic characteristic and changes, by measuring the variable of being concerned about, compare with expected value, according to correction algorithm, parameters such as rotating speed, moment of torsion and fuel injection quantity to motor are measured, are compared and carry out, thereby correct the response of regulation and control system.
Utilize PID control and PI to control to implement correction algorithm among the present invention.So-called PID control refers to proportional-integral-differential control; So-called PI control refers to proportional plus integral control, and P is proportional control, output and the proportional relation of error originated from input signal, and I is integral control, integrator adds up to be used for eliminating steady-state error to error.
By correction algorithm, after can calculating load and uprushing, the overgauge that engine idle should promote.
Before the idling lifting process, the condition of closing of appearance with the situation in the step 2, at this moment, is not carried out the idling lifting process, turns round according to the former idling setting value of motor; If behind the idling lifting process, the condition of closing appears, and then enter the idling lifting and withdraw from process, motor recovers former idling setting value and exports.
After motor reached the rotating speed of setting and moment of torsion and reaches preset range, motor was got back to former low idling condition running, thereby can fuel saving.
Step 5 idling output procedure: for the rising that makes the idling setting value or descend through a time period, thereby can not bring damage to motor, the idling setting value is exported according to a kind of of following three kinds of way of outputs: do not carry out the slope restriction when the former idling setting value of a. increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output (among the figure 4.1); Former idling setting value and promote after the idling setting value when increasing and reducing all with certain slope restriction output (among the figure 4.2); Former idling setting value and promote after the idling setting value when increasing and reducing with variable slope restriction output (among the figure 4.3).
Selectively, can not carry out described idling and promote the process that withdraws from, just behind the former idling setting value process idling lifting process, calculated the idling setting value after promoting, in the process of the idling setting value after increasing to lifting by former idling setting value, the way of output of idling then is: a. does not carry out the slope restriction; B. certain slope restriction is exported; C. variable slope restriction output.
Selectively, if in the idling lifting process, moment of torsion and rotating speed do not reach setting value, then proceed the idling lifting process, till reaching setting value.
Described anti-flameout method can make uncharge motor operate under low idling; When load is uprushed, can heighten engine idle timely again, motor can not uprushed because of load, cause that rotating speed descends, until flame-out; Reach the rotating speed and moment of torsion of setting when motor after, motor is got back to former low idling condition running, thereby reaches energy-saving effect.
The load anti-flame device embodiment that uprushes
A kind of load anti-flame device of uprushing is used for the electric-control motor under the low idling operation, comprises with lower module: the condition judgment module, be used for judging whether to satisfy the load condition of uprushing, but and the starting condition arbitration modules; The condition arbitration modules is used for judging whether to satisfy idling and promotes condition, and can start idling setting value computing module; Idling setting value computing module is used for calculating the idling numerical value that needs lifting; The idling output module is used for output idling setting value.
The working procedure of this device is: at first, be used for judging whether to satisfy the load condition of uprushing by the condition judgment module, if satisfy then the starting condition arbitration modules, by the condition arbitration modules, judge whether to satisfy idling and promote condition, whether there is not the condition of closing if check motor again, when nothing is closed condition, start idling setting value computing module, calculate the idling setting value that needs lifting by idling setting value computing module, namely increase default deviate in former idling setting value, the idling setting value of described lifting is by the output of idling output module.When load reduces, moment of torsion reaches preset range and rotating speed when arriving setting value, then enter the process of withdrawing from, recover former low idling setting value and turn round.
Wherein, described idling setting value computing module can utilize the overgauge that correction algorithm calculates needs increase, and the idling setting value after the lifting can be exported according to mode selected.Utilize PID control and PI to control to implement correction algorithm among the present invention.
During concrete enforcement, by the idling setting value of idling output module output comprise former idling setting value and promote after the idling setting value: when satisfying not that load is uprushed or do not satisfy idling promotes condition, then export former idling setting value; When satisfying that load is uprushed and idling when promoting condition, the idling setting value after then output promotes.The mode of described idling output module output idling setting value comprises: do not carry out the slope restriction when former idling setting value increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output; Idling setting value after former idling setting value and the lifting is all exported with certain slope restriction when increasing and reducing; Idling setting value after former idling setting value and the lifting is exported with the variable slope restriction when increasing and reducing.
Need to prove that this device can be used with electronic control unit (Electronic Control Unit is called for short ECU), perhaps is the part of ECU unit.
Electric-control motor embodiment
A kind of electric-control motor comprises the described load anti-flame device of uprushing.When electric-control motor with low when idle, judge whether to satisfy the load condition of uprushing, judge just whether moment of torsion increases, whether rotating speed descends and surpass predefined value, whether there is not the condition of closing if check motor again, when nothing is closed condition, then enter the idling lifting process and (namely increase default deviate in former idling setting value, described idling setting value computing module utilizes the overgauge that correction algorithm calculates needs increase, and the idling setting value after the lifting can be exported according to mode selected).When load reduces, moment of torsion reaches preset range and rotating speed when arriving setting value, then enter the process of withdrawing from, recover former low idling setting value.
Be example with Weihe River bavin power 7L machine below, further specify the present invention program's working procedure: judge whether motor starts earlier, only when starting successfully and surpass 2s, motor is in low idling, because load increases, rotating speed is descended above 20 rev/mins, moment of torsion rises and surpasses 50 Ns of rice, and there is not the condition of closing, then motor according to correction algorithm with positive deviate of engine idle setting value lifting, 700 rev/mins of the former idling setting values of this type, value after the lifting is 1200 rev/mins, yet, according to different types, value after former idling setting value and the lifting can be set according to operating conditions, and the idling setting value is exported according to selected a kind of of three kinds of way of outputs.
Selectively, after the condition of closing occurring, export according to former idling setting value;
Selectively, when idling lifting condition satisfied, engine start just might enter idling and promote state after surpassing random time between 1 to 10 second;
Selectively, the interval of rotating speed decline setting value can be made as the arbitrary value between 10 to 50 rev/mins, and the interval of moment of torsion rising setting value can be made as the arbitrary value between the 30-100 ox rice.
Need to prove that the motor of other types also can carry out work with reference to the setting value in the present embodiment.For example, after the random time between engine start was above 1 to 10 second, just might enter idling and promote state; The interval of rotating speed decline setting value can be made as the arbitrary value between 10 to 50 rev/mins, and the interval of moment of torsion rising setting value can be made as the arbitrary value between the 30-100 ox rice.
Uprush anti-flame device when applying to other types in load of the present invention, and idling promotes condition, former idling setting value, idling set point value, speed setting value and torque setting value etc. after promoting can specifically be set according to different type of machines.
Above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change on embodiment and application+scope, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. a load anti-flameout method of uprushing is used for the electric-control motor under the low idling operation is controlled, and it is characterized in that, comprises following process:
Condition judgment process: when the low idling mode operation of motor, judge whether to satisfy the load condition of uprushing, if entry condition arbitrated procedure then;
Condition arbitrated procedure: judge whether to satisfy and close condition, if not, then enter the idling lifting process;
The idling lifting process: increase default deviate in former idling setting value, the idling setting value after getting a promotion, the idling setting value after the lifting is exported according to mode selected.
2. the load as claimed in claim 1 anti-flameout method of uprushing is characterized in that the way of output that former idling setting value increases to the idling setting value after the lifting is: do not carry out the slope restriction, with certain slope restriction output or variable slope restriction output.
3. the load as claimed in claim 1 anti-flameout method of uprushing, it is characterized in that, comprise also that behind described idling lifting process idling promotes the process that withdraws from: when engine loading reduces, when moment of torsion reaches preset range and rotating speed arrival setting value, recover former idling setting value and turn round.
4. the load as claimed in claim 3 anti-flameout method of uprushing is characterized in that the way of output of idling setting value comprises:
Do not carry out the slope restriction when former idling setting value increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output;
Idling setting value after former idling setting value and the lifting is all exported with certain slope restriction when increasing and reducing;
Idling setting value after former idling setting value and the lifting is exported with the variable slope restriction when increasing and reducing.
5. each described load anti-flameout method of uprushing as claim 1 to 4 is characterized in that, the described load condition of uprushing is that moment of torsion increases and rotating speed descends above predefined value.
6. each described load anti-flameout method of uprushing as claim 1 to 4 is characterized in that the described condition of closing is: the too high or throttle of water temperature lost efficacy or start successfully after above Preset Time.
7. load anti-flame device of uprushing is used for the electric-control motor under the low idling operation, it is characterized in that, comprises with lower module:
The condition judgment module is used for judging whether to satisfy the load condition of uprushing, when satisfying load and uprush condition, and the starting condition arbitration modules;
The condition arbitration modules is used for judging whether satisfying the condition of closing, and when not satisfying when closing condition, starts idling setting value computing module;
Idling setting value computing module is used for increasing default deviate, the idling setting value after getting a promotion in former idling setting value;
The idling output module is used for output idling setting value.
8. the load as claimed in claim 7 anti-flame device of uprushing is characterized in that, the described load condition of uprushing is that moment of torsion increases and rotating speed descends above predefined value.
9. the load as claimed in claim 7 anti-flame device of uprushing is characterized in that the described condition of closing is: the too high or throttle of water temperature lost efficacy or start successfully after above Preset Time.
10. the load as claimed in claim 7 anti-flame device of uprushing is characterized in that, the mode of described idling output module output idling setting value comprises:
Do not carry out the slope restriction when former idling setting value increases to idling setting value after the lifting, when the idling setting value after the lifting is reduced to former idling setting value with certain slope restriction output;
Idling setting value after former idling setting value and the lifting is all exported with certain slope restriction when increasing and reducing;
Idling setting value after former idling setting value and the lifting is exported with the variable slope restriction when increasing and reducing.
11. an electric-control motor is characterized in that, comprises each described load of claim 7 to 10 anti-flame device of uprushing.
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| CN201310189651.5A CN103291483B (en) | 2013-05-21 | 2013-05-21 | Load is uprushed the electric-control motor of anti-stall method, device and this device of use |
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| CN201310189651.5A CN103291483B (en) | 2013-05-21 | 2013-05-21 | Load is uprushed the electric-control motor of anti-stall method, device and this device of use |
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| CN103291483B CN103291483B (en) | 2016-07-06 |
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| CN104196641A (en) * | 2014-07-15 | 2014-12-10 | 潍柴动力股份有限公司 | Method and system for controlling engine to be switched to idling from starting |
| CN108119250A (en) * | 2017-12-18 | 2018-06-05 | 潍柴动力股份有限公司 | A kind of idle speed control, device and electronic equipment |
| CN110439694A (en) * | 2019-08-14 | 2019-11-12 | 广西玉柴机器股份有限公司 | Anti-down ship flameout method |
| CN110914566A (en) * | 2017-07-13 | 2020-03-24 | 标致雪铁龙汽车股份有限公司 | Method for controlling a brake assembly to prevent repeated stalls during vehicle launch |
| CN111762149A (en) * | 2020-06-29 | 2020-10-13 | 广西玉柴机器股份有限公司 | Starting control method of extended-range hybrid power gas vehicle |
| CN111828184A (en) * | 2020-07-31 | 2020-10-27 | 无锡威孚高科技集团股份有限公司 | Control method and system for quick response of sudden loading and unloading of electric control generator set |
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| CN111828184B (en) * | 2020-07-31 | 2022-09-06 | 无锡威孚高科技集团股份有限公司 | Control method and system for quick response of sudden loading and unloading of electric control generator set |
| CN112776613A (en) * | 2021-03-04 | 2021-05-11 | 潍柴雷沃重工股份有限公司 | Method, system, controller and agricultural machine for improving starting capability of agricultural machine |
| CN114347989A (en) * | 2021-12-13 | 2022-04-15 | 潍柴动力股份有限公司 | Vehicle speed control method and device |
| CN114347989B (en) * | 2021-12-13 | 2024-04-16 | 潍柴动力股份有限公司 | Vehicle speed control method and device |
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