CN102476581B - Virtual clutch switch and method for improving vehicle shifting smoothness by arranging same - Google Patents
Virtual clutch switch and method for improving vehicle shifting smoothness by arranging same Download PDFInfo
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- CN102476581B CN102476581B CN201010558476.9A CN201010558476A CN102476581B CN 102476581 B CN102476581 B CN 102476581B CN 201010558476 A CN201010558476 A CN 201010558476A CN 102476581 B CN102476581 B CN 102476581B
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Abstract
The invention relates to a virtual clutch switch, which is arranged in a vehicle control system, is used for realizing the function of a hardware clutch switch and comprises: a switching unit, an activating unit, a timer and a clutch state judging unit. The invention further relates to a method for improving vehicle shifting smoothness by arranging the virtual clutch switch. The method comprises the following steps of: calibrating the running parameter of a vehicle, wherein a calibration value of the running parameter is obtained through a total vehicle match test; and judging the state of a clutch by using the virtual clutch switch in a traveling shifting process, enabling the virtual clutch switch, quickly reducing an engine torque to a lower limit torque value of a set gear under different gears, and entering transition torque control to preventing sudden reduction of a load caused by clutch separation from leading to quick rise of an engine rotating speed by quickly lowering the engine rotating speed, so that the vehicle shifting smoothness is improved. Due to the adoption of the virtual clutch switch and the method, cost can be reduced effectively, and the driving property, emission and oil consumption performance of the vehicle can be improved.
Description
Technical field
The present invention relates to a kind of clutch switch, also relate to a kind of method of lifting vehicle smooth gear shifting simultaneously.More particularly, the present invention relates to a kind of for substitute realize the virtual clutch switch of traditional hardware clutch switch function and carry out the method for lifting vehicle smooth gear shifting by installing described virtual clutch switch.The invention belongs to automobile technical field.
Background technology
Along with the sustainable development of modern science and technology and the continuous lifting of people's living standard demand, the development of automobile technical field is at a tremendous pace.Especially the auto trade of China, had already developed into second-biggest-in-the-world automobile consumption state gradually since entering 21st century.But, day by day deficient along with oil resources on the earth, and user is for the improving constantly of technical requirements of automobile, more and more shows out the importance of engine management system especially.Particularly under current China's actual conditions, reduce further the manufacturing cost of low cost automobile, and to promote the control of automobile in discharge, oil consumption be the present and following main development direction of automobile industry.Therefore, the technological means of the various advanced persons such as more Eltec, software technology will be widely used in the control system of automotive engine and car load.
In the prior art, clutch state is judged by assembly hardware clutch switch.But because the manufacture of traditional hardware power-transfer clutch, maintenance cost are higher, its control technology principle is not quite similar, emphasis is different, and this makes the non-constant of commonality between different hardware power-transfer clutchs.And, for the maneuvering system being similar to pulling clutch, traditional hardware clutch switch cannot be loaded wherein at all, and set up this kind of hardware clutch switch and also can increase additional cost, this, is difficult to reduce its cost further itself like being setting-out in dry towel for low cost cars in fact again.
In addition, also noteworthy is that, under the day by day complicated crowded background of Modern Traffic road conditions, user vehicle is for the aspect such as manipulation feel, driver comfort of vehicle, and the driving ride comfort of particularly shifting gears in moderating process requires all progressively improving.And people are attaching importance to environmental protection problem more and more, therefore necessary by technological means reduce vehicle fuel oil consumption, improve fuel economy, more effectively reduce the HC(hydro-carbon of vehicle) and the quantity discharged of CO outwardly environment.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of virtual clutch switch, in order to substitute the function realizing traditional hardware clutch switch, thus while guaranteeing long-term stability, reliably using, effectively reduce further and manufacture and working service cost.
In addition, another object of the present invention is to provide a kind of method carrying out lifting vehicle smooth gear shifting by installing above-mentioned virtual clutch switch, the driving of vehicle, discharge and oil consumption performance can be improved further by it, promote the ride comfort that gearshift moderating process is driven, reduce fuel oil consumption simultaneously and reduce the quantity discharged of HC and CO, the method is applicable to dissimilar vehicle.
For realizing above-mentioned goal of the invention, the technical solution used in the present invention is as follows:
A kind of virtual clutch switch, it is arranged on for realizing the function of hardware clutch switch in vehicle control system, and it comprises:
Switch element, it is for opening or close the function of described virtual clutch switch;
Activate unit, it is for activating described virtual clutch switch to make its work;
Time meter, it is for carrying out timing; And
Clutch state identifying unit, its in the setting-up time being carried out timing by described time meter according to the engine speed unit time rate of change of driving engine when different gear slows down, accelerator pedal position and compare the activation time of described virtual clutch switch and its calibration value and judge power-transfer clutch status.
In above-mentioned virtual clutch switch, preferably, described vehicle control system is engine management system.
In above-mentioned virtual clutch switch, preferably, described setting-up time refers to the one-period cycle time under throttle release conditions, and described engine speed unit time rate of change refers to the increase ratio of engine speed in this periodic cycle time.
In above-mentioned virtual clutch switch, preferably, described one-period cycle time is 10 milliseconds.
A method for lifting vehicle smooth gear shifting, in vehicle control system, first install the virtual clutch switch as described in above any one, and described method comprises the steps:
A, demarcate the operational factor of vehicle, the calibration value of described operational factor takes from car load matching test; And
B, driving shift process in use described virtual clutch switch to judge power-transfer clutch status, and after enable described virtual clutch switch, engine torque reduced to fast the lower torque limit value of setting gear under different gear and enter the control of transition moment of torsion, to cause engine speed to rise fast by reducing engine speed fast to avoid because load during disengaging of clutch reduces suddenly, thus lifting vehicle smooth gear shifting.
In the method for above-mentioned lifting vehicle smooth gear shifting, preferably, the operational factor carrying out in described step a demarcating comprises: engine speed rising difference, engine speed rising rate of change, engine cooling water temperature, virtual clutch switching function opens cumulative hours, and the activation time of virtual clutch switch, the difference of initial engine rotating speed during to be the current rotating speed of driving engine that calculated by engine crankshaft position sensor with the time meter in described virtual clutch switch the started timing of wherein said engine speed rising difference, described engine speed rising rate of change refers to the increase ratio of the current rotating speed of described driving engine relative to described initial engine rotating speed.
In the method for above-mentioned lifting vehicle smooth gear shifting, preferably, the calibration value of described operational factor is stored in the EEPROM of engine controller.
In the method for above-mentioned lifting vehicle smooth gear shifting, preferably, described step b specifically comprises the steps:
B1, initialization time meter, then judge whether the function of having opened described virtual clutch switch: if, then calculation engine Speed unit time rate of change;
B2, judge whether enable described virtual clutch switch: if then enter step b3; Otherwise, enter step b4;
B3, judge whether Das Gaspedal is in zero-bit: if then enter step b5; Otherwise what described time meter is deducted 1 this time meter adopts clocks the unit time, then terminates;
B4, judge whether the activation time of virtual clutch switch is greater than its calibration value: if what then described time meter is deducted that 1 this time meter adopts clocks the unit time, then terminates; Otherwise, directly terminate;
B5, judge whether the activation time of virtual clutch switch is less than its calibration value: if then enter step b6; Otherwise, directly terminate;
B6, reset described time meter calculation engine rotating speed rising difference;
B7, judge whether following condition is set up simultaneously:
I) do be current engine speed rising difference greater than its calibration value?
II) current engine speed rising rate of change is greater than its calibration value
III) do current virtual clutch switching function open cumulative hours and is greater than its calibration value?
IV) do be current engine cooling water temperature greater than its calibration value?
If above condition is set up simultaneously, then activate described virtual clutch switch, and accumulative described time meter; Otherwise, described time meter is subtracted 1 process, then terminates.
In the method for above-mentioned lifting vehicle smooth gear shifting, preferably, described engine speed unit time rate of change refers to the increase ratio of engine speed within one-period cycle time.
In the method for above-mentioned lifting vehicle smooth gear shifting, preferably, described one-period cycle time is 10 milliseconds.
Beneficial effect of the present invention is: present invention employs comprise software technology Advanced Control Techniques to realize a kind of virtual clutch switch, substitute traditional hardware clutch switch with this to differentiate clutch state, thus thoroughly reform the prior art adopting common hardware clutch switch.Can guarantee that Long-Term Properties is stable, reliable by virtual clutch switch of the present invention, and manufacture, use and maintenance cost can be reduced significantly.In addition, based on above-mentioned innovative technology, by installing above-mentioned virtual clutch switch on vehicle, present invention also offers the method for lifting vehicle smooth gear shifting, it is while improving vehicle shift ride comfort, can also effectively control fuel oil consumption performance and reduce the quantity discharged of HC and CO, thus significantly can promote the competitive edge of automobile product.Above technique effect of the present invention is very significant, and through testing authentication, thus the present invention has good popularizing application prospect.
Accompanying drawing explanation
Below with reference to drawings and Examples, technical scheme of the present invention is described in further detail.Wherein:
Fig. 1 is the composition structural representation of a virtual clutch switch of the present invention preferred embodiment;
Fig. 2 is the diagram of circuit being carried out a preferred embodiment of the method for lifting vehicle smooth gear shifting by installing virtual clutch switch of the present invention;
Fig. 3 is implemented by the diagram of circuit being carried out a preferred embodiment of the method for lifting vehicle smooth gear shifting by installing virtual clutch switch of the present invention.
Detailed description of the invention
In the text, the implication of term " enable virtual clutch switch " refers to that virtual clutch switch has met job requirement but also do not carried out work.The implication of term " activate virtual clutch switch " refers to that virtual clutch switch is controlled and starts to carry out work.
Refer to Fig. 1, it is the composition structural representation of a preferred embodiment of virtual clutch switch of the present invention, this virtual clutch switch 1 is installed in automobile engine control system, is used for replacing common hardware clutch switch of the prior art completely and realizes its repertoire with this.As shown in Figure 1, this virtual clutch switch 1 comprises: time meter 11, switch element 12, clutch state identifying unit 13 and activation unit 14, below will be specifically described for these component parts.
In the preferred embodiment, time meter 11 is provided for carrying out timing when judging the stability of virtual clutch switch.Switch element 12, it is the function being provided for opening or closing virtual clutch switch 1.Clutch state identifying unit 13 judges power-transfer clutch status for comparing (carrying out the calculating of reasonableness redundancy analysis) according to the activation time of engine speed unit time rate of change, accelerator pedal position and the virtual clutch switch of driving engine when different gear slows down and its calibration value in the setting-up time being carried out timing by time meter 11; Wherein, setting-up time refers to the one-period cycle time (such as 10 milliseconds) under throttle release conditions, and engine speed unit time rate of change refers to the increase ratio of engine speed in above-mentioned periodic cycle time.Activate unit 14, it is for activating virtual clutch switch to make its work.
Particular content above about each component part (particularly clutch state identifying unit 13) wherein also will combine to be described in more details in the description of the method for lifting vehicle smooth gear shifting by for by installing virtual clutch switch 1 of the present invention below further.
The invention provides a kind of method of lifting vehicle smooth gear shifting, first it need on vehicle, to install above-mentioned virtual clutch switch 1 to substitute the function realizing hardware clutch switch, and demarcate the operational factor of vehicle.These operational factors obtain by carrying out car load matching test, and in a preferred embodiment, they are stored in the EEPROM of engine controller.These are comprised by the operational factor demarcated: engine speed rising difference, engine speed rising rate of change, engine cooling water temperature, virtual clutch switching function open the activation time of cumulative hours and virtual clutch switch, certainly can also comprise according to actual needs and carry out any other parameter of demarcating.Wherein, the difference of initial engine rotating speed during to be the current rotating speed of driving engine that calculated by engine crankshaft position sensor with the time meter in virtual clutch switch the started timing of above-mentioned engine speed rising difference, engine speed rising rate of change then refers to the increase ratio of the current rotating speed of above-mentioned driving engine relative to above-mentioned initial engine rotating speed.
Then, in driving shift process, use the current status of virtual clutch switch 1 pair of power-transfer clutch to judge, and after enable virtual clutch switch 1, engine torque reduced to fast the lower torque limit value of setting gear under different gear and enter the control of transition moment of torsion, thus when avoiding disengaging of clutch by the rotating speed reducing driving engine fast, load reduces suddenly and causes the rotating speed of driving engine to rise fast, thus lifting vehicle smooth gear shifting.About above-mentioned transition moment of torsion control process and method thereof, reduce the technology contents such as engine torque and quick reduction engine speed fast, due to all known by those of ordinary skill in the art, so need not repeat again in this article.
Fig. 2 shows the diagram of circuit of a preferred embodiment of the method for above-mentioned lifting vehicle smooth gear shifting.Specifically, this treatment scheme comprises the following steps:
First, in the step s 100, the time meter in initialization of virtual clutch switch;
Then, in step S101, judge whether the function of opening virtual clutch switch: if then enter step S102: calculation engine Speed unit time rate of change (concrete meaning about this concept refers to foregoing teachings);
Subsequently, in step s 103, enable virtual clutch switch is judged whether: if then enter step S104; Otherwise, enter step S105;
Again in step S104, judge whether Das Gaspedal is in zero-bit: if then enter step S108; Otherwise, in step s 106 time meter is subtracted 1 process, then terminates;
Then, in step S105, judge whether the activation time of virtual clutch switch is greater than its calibration value: if then in step s 107 time meter is subtracted 1 process, to prevent from occurring that time-out judges when not enable virtual clutch switch, then terminate; Otherwise, directly terminate;
Afterwards, in step S108, there is erroneous judgement in order to reduce when Das Gaspedal makes zero for a long time, therefore need the activation time judging virtual clutch switch whether to be less than its calibration value: if then enter step S109; Otherwise, directly terminate;
Then, in step S109, reset timer also calculates foregoing engine speed rising difference;
Subsequently, in step s 110, judge whether following condition is set up simultaneously:
I) do be current engine speed rising difference greater than its calibration value?
II) current engine speed rising rate of change is greater than its calibration value
III) do current virtual clutch switching function open cumulative hours and is greater than its calibration value?
IV) do be current engine cooling water temperature greater than its calibration value?
If above condition is set up simultaneously, then show the situation that there is not overtime time delay, thus in step S111, activate virtual clutch switch, and hour totalizer; Otherwise, just in step S112, time meter is subtracted 1 process, then terminates.
In addition, also show the diagram of circuit that is implemented the preferred embodiment of the method for lifting vehicle smooth gear shifting of the present invention in figure 3, wherein:
In step s 201, carry out the damping of deceleration damping vibration attenuation to control;
In step S202, judge whether the function opening virtual clutch switch: if then enter step S203; Otherwise, enter step S204;
In step S203, start the minimum damping of each gear and be set to its implication of 0(for cancelling deceleration damping vibration attenuation damping control); And
In step S204, each gear deceleration damping vibration attenuation damping starting non-clutch function controls.
In sum, advantage of the present invention is the state being judged power-transfer clutch in the mode of technology innovation by engine speed rate of change and accelerator pedal position, thus hardware clutch switch can be replaced completely, realize reducing costs, solve while stay-supported non-hydraulic power-transfer clutch cannot install the problem of clutch switch, more can ensure that its long-term operation performance is reliable and stable.And, the method after being judged by complete clutch state, driving engine controlled, existing vehicle (particularly equipping the vehicle of Manual transmission non-hydraulic formula power-transfer clutch or hydraulic clutch) can be solved in shift process, drive the not good problem of ride comfort, and turn round by subtracting the quantity discharged that process effectively can control oil consumption, reduction HC and CO.Obviously, adopt the present invention will have above-mentioned many-sided advantage, significantly can promote the competitive power of automobile product, so popularizing application prospect of the present invention is very wide.
Be enumerated above some specific embodiments and illustrate virtual clutch switch of the present invention and the method by its lifting vehicle smooth gear shifting of installing in detail, this a few example is only for principle of the present invention and embodiment thereof are described, and be not limitation of the present invention, without departing from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement.Such as, can according to actual needs the operational factors such as the activation time of virtual clutch switch to be stored in technical solution of the present invention in any other applicable vehicle modules etc.Therefore, all equivalent technical schemes all should belong to category of the present invention also by every claim of the present invention is limited.
Claims (9)
1.
a kind of virtual clutch switch, it is characterized in that, described virtual clutch switch is arranged on for realizing the function of hardware clutch switch in vehicle control system, and it comprises:
switch element, it is for opening or close the function of described virtual clutch switch;
activate unit, it is for activating described virtual clutch switch to make its work;
time meter, it is for carrying out timing; And
clutch state identifying unit, its in the setting-up time being carried out timing by described time meter according to the engine speed unit time rate of change of driving engine when different gear slows down, accelerator pedal position and compare the activation time of described virtual clutch switch and its calibration value and judge power-transfer clutch status, described setting-up time refers to the one-period cycle time under throttle release conditions, and described engine speed unit time rate of change refers to the increase ratio of engine speed in this periodic cycle time.
2.
virtual clutch switch according to claim 1, is characterized in that, described vehicle control system is engine management system.
3.
virtual clutch switch according to claim 1, is characterized in that, described one-period cycle time is 10 milliseconds.
4.
a method for lifting vehicle smooth gear shifting, is characterized in that, install virtual clutch switch according to any one of claim 1 to 3, and described method comprises the steps: in vehicle control system
a, demarcate the operational factor of vehicle, the calibration value of described operational factor takes from car load matching test; And
b, driving shift process in use described virtual clutch switch to judge power-transfer clutch status, and after enable described virtual clutch switch, engine torque reduced to fast the lower torque limit value of setting gear under different gear and enter the control of transition moment of torsion, to cause engine speed to rise fast by reducing engine speed fast to avoid because load during disengaging of clutch reduces suddenly, thus lifting vehicle smooth gear shifting.
5.
the method of lifting vehicle smooth gear shifting according to claim 4, it is characterized in that, the operational factor carrying out in described step a demarcating comprises: engine speed rising difference, engine speed rising rate of change, engine cooling water temperature, virtual clutch switching function opens cumulative hours, and the activation time of virtual clutch switch, the difference of initial engine rotating speed during to be the current rotating speed of driving engine that calculated by engine crankshaft position sensor with the time meter in described virtual clutch switch the started timing of wherein said engine speed rising difference, described engine speed rising rate of change refers to the increase ratio of the current rotating speed of described driving engine relative to described initial engine rotating speed.
6.
the method of the lifting vehicle smooth gear shifting according to claim 4 or 5, is characterized in that, the calibration value of described operational factor is stored in the EEPROM of engine controller.
7.
the method of the lifting vehicle smooth gear shifting according to claim 4 or 5, is characterized in that, described step b specifically comprises the steps:
b1, initialization time meter, then judge whether the function of having opened described virtual clutch switch: if, then calculation engine Speed unit time rate of change;
b2, judge whether enable described virtual clutch switch: if then enter step b3; Otherwise, enter step b4;
b3, judge whether Das Gaspedal is in zero-bit: if then enter step b5; Otherwise what described time meter is deducted 1 this time meter adopts clocks the unit time, then terminates;
b4, judge whether the activation time of virtual clutch switch is greater than its calibration value: if what then described time meter is deducted that 1 this time meter adopts clocks the unit time, then terminates; Otherwise, directly terminate;
b5, judge whether the activation time of virtual clutch switch is less than its calibration value: if then enter step b6; Otherwise, directly terminate;
b6, reset described time meter calculation engine rotating speed rising difference;
b7, judge whether following condition is set up simultaneously:
i) do be current engine speed rising difference greater than its calibration value?
iI) current engine speed rising rate of change is greater than its calibration value
iII) do current virtual clutch switching function open cumulative hours and is greater than its calibration value?
iV) do be current engine cooling water temperature greater than its calibration value?
if above condition is set up simultaneously, then activate described virtual clutch switch, and accumulative described time meter; Otherwise, described time meter is subtracted 1 process, then terminates.
8.
the method of lifting vehicle smooth gear shifting according to claim 7, is characterized in that, described engine speed unit time rate of change refers to the increase ratio of engine speed within one-period cycle time.
9.
the method of lifting vehicle smooth gear shifting according to claim 8, is characterized in that, described one-period cycle time is 10 milliseconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010558476.9A CN102476581B (en) | 2010-11-23 | 2010-11-23 | Virtual clutch switch and method for improving vehicle shifting smoothness by arranging same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010558476.9A CN102476581B (en) | 2010-11-23 | 2010-11-23 | Virtual clutch switch and method for improving vehicle shifting smoothness by arranging same |
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| CN102476581A CN102476581A (en) | 2012-05-30 |
| CN102476581B true CN102476581B (en) | 2015-06-17 |
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| CN201010558476.9A Expired - Fee Related CN102476581B (en) | 2010-11-23 | 2010-11-23 | Virtual clutch switch and method for improving vehicle shifting smoothness by arranging same |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1217242A2 (en) * | 2000-12-20 | 2002-06-26 | Toyota Jidosha Kabushiki Kaisha | Apparatus for determining operating state of clutch of vehicle, and engine controller equipped with the apparatus |
| US6488609B1 (en) * | 1999-09-30 | 2002-12-03 | Suzuki Motor Corporation | Motor control apparatus combined to engine |
| CN201559530U (en) * | 2009-09-18 | 2010-08-25 | 北汽福田汽车股份有限公司 | Clutch control device and transportation tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11180271A (en) * | 1997-12-19 | 1999-07-06 | Akebono Brake Ind Co Ltd | Pedal position detecting device |
| JP2008260453A (en) * | 2007-04-13 | 2008-10-30 | Toyota Motor Corp | Abnormality judging device for clutch switch |
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2010
- 2010-11-23 CN CN201010558476.9A patent/CN102476581B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6488609B1 (en) * | 1999-09-30 | 2002-12-03 | Suzuki Motor Corporation | Motor control apparatus combined to engine |
| EP1217242A2 (en) * | 2000-12-20 | 2002-06-26 | Toyota Jidosha Kabushiki Kaisha | Apparatus for determining operating state of clutch of vehicle, and engine controller equipped with the apparatus |
| CN201559530U (en) * | 2009-09-18 | 2010-08-25 | 北汽福田汽车股份有限公司 | Clutch control device and transportation tool |
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