CN103993967A - Vehicle and quick acceleration control method and device for vehicle - Google Patents
Vehicle and quick acceleration control method and device for vehicle Download PDFInfo
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- CN103993967A CN103993967A CN201410140468.0A CN201410140468A CN103993967A CN 103993967 A CN103993967 A CN 103993967A CN 201410140468 A CN201410140468 A CN 201410140468A CN 103993967 A CN103993967 A CN 103993967A
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Abstract
The invention discloses a quick acceleration control method for a vehicle. The method comprises the following steps that whether an engine is in a quick acceleration working condition is judged; on the condition that characterization of the judgment result is in the quick acceleration working condition, a quick acceleration wait mode is entered; under the quick acceleration wait mode, on the condition that the opening degree and the acceleration rate of an accelerator pedal are larger than corresponding threshold values, a quick acceleration activation mode is entered; under the quick acceleration activation mode, a control instruction is output to reduce limitation on operation of the engine; on the condition that the vehicle speed is larger than the threshold value, or the vehicle is located at the neutral position or the engine breaks down, the quick acceleration working condition is exited. By the application of the control method, the vehicle is accelerated by adjusting the working state of the engine on the quick acceleration working condition, and therefore the acceleration property of the vehicle is improved on the premise of taking the economy into consideration. Based on the method, the invention further provides the vehicle applying the quick acceleration control method.
Description
Technical field
The present invention relates to the control technique of vehicular engine, be specifically related to a kind of vehicle and anxious speed control method, the device of adding thereof.
Background technique
Acceleration performance is the important indicator of weighing vehicles dynamic performance.It is shorter that driven by engine automobile reaches the needed time for acceleration of a certain high speed, means that its acceleration performance is just better, and the power character of car load is also just higher; That is to say, the acceleration performance of vehicle mainly determined by the power of motor, and the acceleration performance of the larger vehicle of power of general motor is better.
In the matching process of vehicle, need to take into account the factor such as power character and Economy coupling motor, well-known, operation control based on existing motor, only cannot operate in optimum Working by increasing fuel injection quantity, fuel economy is not high, and the effect of acceleration performance is also not obvious.Obviously, power character and Economy be the contradiction of restriction mutually in matching process often, improve power character and will sacrifice Economy, improve Economy and will sacrifice power character.Especially, accelerate under mode of operation the anxious of motor, above-mentioned contradiction is particularly outstanding.
In view of this, urgently propose a kind of controlling method for the anxious mode of operation of accelerating of motor, by the optimization of control technique, can under the prerequisite of taking into account Economy, improve its acceleration performance.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is to provide a kind of vehicle suddenly to add speed control method, under anxious accelerating mode, by adjusting the working state of motor, completes vehicle and accelerates, thereby under the prerequisite of taking into account Economy, improve its acceleration performance.On this basis, the present invention also provides this urgency of a kind of application to add the vehicle of speed control method.
Vehicle provided by the invention is anxious adds speed control method, comprises the steps:
A10. judge that whether motor is in anxious accelerating mode;
A21. characterize in described anxious accelerating mode as condition taking judged result, enter the anxious waiting mode that accelerates;
A22. under waiting mode, be all greater than respective threshold as condition taking gas pedal aperture and rate of acceleration described anxious acceleration, enter the anxious enable mode that accelerates;
A23. described anxious acceleration under enable mode, output control command reduces motor operation restriction;
A30. taking the speed of a motor vehicle be greater than threshold value, in neutral position or engine failure as condition, exit anxious accelerating mode.
Preferably, in steps A 23, export control command simultaneously and adjust injection advance angle and rail pressure setting value, increase and drive demand torque.
Preferably, in steps A 23, exceed threshold value as condition to enter the anxious time of accelerating enable mode, enter the anxious park mode that accelerates;
Steps A 24., at the described anxious park mode that accelerates, exceedes threshold value as condition to enter the anxious time of accelerating park mode, enters the described anxious waiting mode that accelerates.
Preferably, in steps A 23, after output control command, be less than threshold value as condition taking gas pedal aperture, enter the described anxious waiting mode that accelerates.
Preferably, adopt the control of RAMP slope after exiting anxious accelerating mode.
Preferably, in steps A 10, being all greater than respective threshold according to anxious acceleration enabler flags, the speed of a motor vehicle, engine speed, water temperature and intake temperature is condition, obtains the judged result in anxious accelerating mode.
Preferably, described reduction motor operation restriction comprises: relax smoke intensity restriction, relax mechanical protection torque limited, relax overtemperature protection, relax the protection of pressurized machine torque limiting and engine speed torque limited.
Preferably, described increase driving demand torque is specially and on the basis of pedal demand torque, increases change in torque slope.
Vehicle provided by the invention, comprises driving motor, and adopts the anxious speed control method that adds of foregoing vehicle.
Compared with prior art, the present invention looks for another way provides a kind of urgency for vehicle to add speed control method.First, this programme taking anxious accelerating mode as condition starts anxious aero mode, enter the anxious waiting mode that accelerates; In the time that gas pedal aperture and rate of acceleration are all greater than respective threshold, enter anxious acceleration under enable mode, output control command reduces motor operation restriction, thereby in motor allowed band, reaches the object that improves the anxious acceleration performance of vehicle; Finally, taking the speed of a motor vehicle be greater than threshold value, in neutral position or engine failure as condition, exit anxious accelerating mode.Apply urgency of the present invention and add speed control method, can discharge the demarcation of letting pass to anxious aero mode, in the short time, suitably decontrol various restrictions, thereby can meet different clients' requirement; This controlling method, under the prerequisite of taking into account Economy, can guarantee that the acceleration performance of vehicle significantly promotes.
In preferred version of the present invention, accelerate under enable mode anxious, when output control command reduces motor operation restriction, also export control command and adjust injection advance angle and rail pressure setting value, increase and drive demand torque; Thus, the further anxious acceleration performance of lifting vehicle.
In another preferred version of the present invention, exceed threshold value as condition to enter the anxious time of accelerating enable mode, enter the anxious park mode that accelerates, and exceed threshold value as condition to enter the anxious time of accelerating park mode, enter the anxious waiting mode that accelerates; So arrange, the time of control engine continuous operation under anxious aero mode, thereby improving on the basis of the anxious acceleration performance of vehicle, can evade the potential safety hazard that this controlling method is carried out completely.
In another preferred version of the present invention, adopt the control of RAMP slope after exiting anxious accelerating mode, can obtain thus the anxious rear engine working stability that accelerates.
Urgency provided by the invention adds the vehicle of speed control method applicable to any employing driving motor.
Brief description of the drawings
Fig. 1 is the anxious flow chart that adds speed control method described in the first embodiment;
Fig. 2 is the anxious flow chart that adds speed control method described in the second embodiment.
Embodiment
The conventional control of motor based on existing vehicle, core of the present invention is to provide one and suddenly adds speed control method, to improve its acceleration performance under the prerequisite of taking into account Economy.Illustrate present embodiment below in conjunction with Figure of description.
Embodiment 1:
Refer to Fig. 1, this figure is the anxious flow chart that adds speed control method described in the first embodiment.
This vehicle suddenly adds speed control method and comprises the steps:
A10. judge that whether motor is in anxious accelerating mode; Particularly, being all greater than respective threshold according to anxious acceleration enabler flags, the speed of a motor vehicle, engine speed, water temperature and intake temperature is condition, obtains the judged result in anxious accelerating mode.Here,, according to different applications, the anxious respective threshold of accelerating enabler flags, the speed of a motor vehicle, engine speed, water temperature and intake temperature all can be determined by experiment.
A21. characterize in anxious accelerating mode as condition 0 taking judged result, enter the anxious waiting mode that accelerates; That is to say, do not carry out urgency and accelerate to control under this pattern, whether this judged result sign vehicle can carry out anxious acceleration is controlled.
A22. under waiting mode, be greater than first threshold with gas pedal aperture anxious acceleration, it is condition 2 that while rate of acceleration is greater than certain threshold value, enters the anxious enable mode that accelerates; In the time that gas pedal aperture and rate of acceleration are greater than certain value (needing driver suddenly to step on the gas), enter the anxious enable mode that accelerates and carry out anxious acceleration and control.
A23. accelerate under enable mode anxious, output control command reduces motor operation restriction; Certainly,, after output control command, be less than Second Threshold as condition 1 taking gas pedal aperture, enter the anxious waiting mode that accelerates, thereby go back to the anxious waiting mode that accelerates by anxious aero mode, guarantee that anxious acceleration is controlled in time and driver's operation instruction is consistent, there is good operability.
A30. taking the speed of a motor vehicle be greater than threshold value, in neutral position or engine failure as condition 4, exit anxious accelerating mode.Obviously, the speed of a motor vehicle " threshold value " here need to have been considered the anxious rate request accelerating and the trouble free service limit of motor simultaneously, should be appreciated that this " threshold value " is greater than the speed of a motor vehicle " threshold value " in steps A 10.In order to obtain the safety in operation of better motor and complete machine, after operation gear switch reports an error to neutral position or engine failure, need to exit equally anxious accelerating mode, i.e. non-aero mode.
It should be noted that, motor operation restriction is controlled and is determined according to conventional engine ECU, and herein, " reducing motor operation restriction " refers to and adjust engine health operation restriction, make the interim limiting parameter value that increases under anxious accelerating mode.Preferably, reducing motor operation restriction can comprise: relax smoke intensity restriction, relax mechanical protection torque limited, relax overtemperature protection, relax the protection of pressurized machine torque limiting and engine speed torque limited.Wherein, relax smoke intensity restriction: original smoke intensity torque limiting is smaller, then need suddenly smoke intensity torque limiting in the situation of moment of torsion not catch up with, the torque limiting that this part need to be drawn based on suction pressure is decontroled temporarily.Wherein, relax overtemperature protection: need suddenly the ratio that in the situation of moment of torsion, engine water temperature can rise very fast, conventional engine overtemperature protection is demarcated for long time running again; therefore; provisional overheated can suitably amplification, but some situation still needs to consider, the situation such as for example boil.Wherein, the protection of pressurized machine torque limiting, engine speed torque limited: original torque limited is smaller; if needed suddenly again in situation that in the situation of moment of torsion, smoke intensity torque limiting and overtemperature protection torque limiting do not work; this part moment of torsion can work; get both minimum value, so torque limiting need to be become to large equally.Should be appreciated that for dissimilar motor, there is certain difference in the operation restriction in its conventional control, and is not subject to the constraint of aforementioned limitations type.
In order further to promote anxious acceleration performance, reduce to greatest extent the speed-raising time.In steps A 23, export control command simultaneously and adjust injection advance angle and rail pressure setting value, increase and drive demand torque.Wherein, the moment of torsion of increasing demand: pedal demand torque increases change in torque slope on the original basis.Wherein, adjust torque limited: on the original basis engine limitations moment of torsion is amplified.Wherein, adjust injection advance angle, adjust rail pressure setting value: injection advance angle trend is to increase, and rail pressure setting value trend is similarly increase, certainly, also can not do the adjustment increasing for special control point.
Obviously, anxious accelerate engine speed under enable mode higher than the engine speed under routine control, in order to obtain the anxious rear engine working stability that accelerates, adopt the control of RAMP slope after preferably exiting anxious accelerating mode.
In addition, in order further to promote the safety reliability of this urgency acceleration performance controlling method of application, can on the first embodiment's basis, do further optimization, please also refer to Fig. 2, the figure shows the flow chart of anxious acceleration performance controlling method described in the second embodiment.
Embodiment 2:
This programme is identical with the first embodiment's control principle, and difference has been to increase control engine continuous operation in the anxious function of accelerating the enable mode time.As shown in Figure 2, in steps A 23, exceed very first time threshold value as condition 3 to enter the anxious time of accelerating enable mode, enter the anxious park mode that accelerates; Steps A 24., at anxious acceleration park mode, exceedes the second time threshold as condition 4 to enter the anxious time of accelerating park mode, enters the anxious waiting mode that accelerates, and again enters and suddenly accelerates enable mode when meeting after anxious acceleration environment.Similarly, " very first time threshold value " and " very first time threshold value " also can demarcate by experiment.
Add speed control method except aforementioned vehicle is anxious, present embodiment also provides a kind of vehicle that adopts driving motor, on the basis of conventional ECU engine control, and the anxious speed control method that adds of this vehicle application of aforementioned.It should be explicitly made clear at this point, other functional parts of this vehicle all can adopt existing techniques in realizing, therefore repeat no more herein.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. vehicle is anxious adds a speed control method, it is characterized in that, described controlling method comprises the steps:
A10. judge that whether motor is in anxious accelerating mode;
A21. characterize in described anxious accelerating mode as condition taking judged result, enter the anxious waiting mode that accelerates;
A22. under waiting mode, be all greater than respective threshold as condition taking gas pedal aperture and rate of acceleration described anxious acceleration, enter the anxious enable mode that accelerates;
A23. described anxious acceleration under enable mode, output control command reduces motor operation restriction;
A30. taking the speed of a motor vehicle be greater than threshold value, in neutral position or engine failure as condition, exit anxious accelerating mode.
2. vehicle according to claim 1 is anxious adds speed control method, it is characterized in that, in steps A 23, exports control command simultaneously and adjusts injection advance angle and rail pressure setting value, increases and drive demand torque.
3. vehicle according to claim 2 is anxious adds speed control method, it is characterized in that, in steps A 23, exceedes threshold value as condition to enter the anxious time of accelerating enable mode, enters the anxious park mode that accelerates;
Steps A 24., at the described anxious park mode that accelerates, exceedes threshold value as condition to enter the anxious time of accelerating park mode, enters the described anxious waiting mode that accelerates.
4. add speed control method according to the vehicle described in any one in claims 1 to 3 is anxious, it is characterized in that, in steps A 23, after output control command, be less than threshold value as condition taking gas pedal aperture, enter the described anxious waiting mode that accelerates.
5. vehicle according to claim 4 is anxious adds speed control method, it is characterized in that, adopts the control of RAMP slope after exiting anxious accelerating mode.
6. the anxious speed control method that adds of vehicle according to claim 1, it is characterized in that, in steps A 10, being all greater than respective threshold according to anxious acceleration enabler flags, the speed of a motor vehicle, engine speed, water temperature and intake temperature is condition, obtains the judged result in anxious accelerating mode.
7. the anxious speed control method that adds of vehicle according to claim 1; it is characterized in that, described reduction motor operation restriction comprises: relax smoke intensity restriction, relax mechanical protection torque limited, relax overtemperature protection, relax the protection of pressurized machine torque limiting and engine speed torque limited.
8. vehicle according to claim 7 is anxious adds speed control method, it is characterized in that, described increase driving demand torque is specially and on the basis of pedal demand torque, increases change in torque slope.
9. a vehicle, comprises driving motor, it is characterized in that, adopts the anxious speed control method that adds of vehicle as described in any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410140468.0A CN103993967A (en) | 2014-04-09 | 2014-04-09 | Vehicle and quick acceleration control method and device for vehicle |
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| CN201410140468.0A CN103993967A (en) | 2014-04-09 | 2014-04-09 | Vehicle and quick acceleration control method and device for vehicle |
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| CN201410140468.0A Pending CN103993967A (en) | 2014-04-09 | 2014-04-09 | Vehicle and quick acceleration control method and device for vehicle |
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Cited By (7)
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| CN105292127A (en) * | 2015-10-23 | 2016-02-03 | 深圳市元征科技股份有限公司 | Rapid acceleration detecting method and vehicle-mounted terminal |
| CN109322754A (en) * | 2018-12-10 | 2019-02-12 | 广西玉柴机器股份有限公司 | The optimization method of engine transient dynamic property |
| CN110905670A (en) * | 2018-09-14 | 2020-03-24 | 罗伯特·博世有限公司 | Method and system for adjusting engine output torque under severe vehicle acceleration |
| CN113401106A (en) * | 2021-06-30 | 2021-09-17 | 重庆长安汽车股份有限公司 | Control method of power output |
| CN113483092A (en) * | 2021-06-15 | 2021-10-08 | 重庆长安汽车股份有限公司 | Control method for improving dynamic property of DCT (discrete cosine transformation) vehicle type in sudden accelerator stepping |
| WO2022151355A1 (en) * | 2021-01-15 | 2022-07-21 | 华为数字能源技术有限公司 | Electric motor driving method, apparatus and system |
| CN115123230A (en) * | 2021-12-28 | 2022-09-30 | 长城汽车股份有限公司 | Vehicle acceleration control method, vehicle acceleration control device, vehicle and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105292127A (en) * | 2015-10-23 | 2016-02-03 | 深圳市元征科技股份有限公司 | Rapid acceleration detecting method and vehicle-mounted terminal |
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| WO2022151355A1 (en) * | 2021-01-15 | 2022-07-21 | 华为数字能源技术有限公司 | Electric motor driving method, apparatus and system |
| CN113483092A (en) * | 2021-06-15 | 2021-10-08 | 重庆长安汽车股份有限公司 | Control method for improving dynamic property of DCT (discrete cosine transformation) vehicle type in sudden accelerator stepping |
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| CN113401106B (en) * | 2021-06-30 | 2022-08-09 | 重庆长安汽车股份有限公司 | Control method of power output |
| CN115123230A (en) * | 2021-12-28 | 2022-09-30 | 长城汽车股份有限公司 | Vehicle acceleration control method, vehicle acceleration control device, vehicle and storage medium |
| WO2023125133A1 (en) * | 2021-12-28 | 2023-07-06 | 长城汽车股份有限公司 | Vehicle acceleration control method and device, vehicle, and storage medium |
| CN115123230B (en) * | 2021-12-28 | 2024-04-02 | 长城汽车股份有限公司 | Vehicle acceleration control method and device, vehicle and storage medium |
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Application publication date: 20140820 |