CN102042381A - Mode switching control system and method for differential - Google Patents
Mode switching control system and method for differential Download PDFInfo
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- CN102042381A CN102042381A CN2010106200535A CN201010620053A CN102042381A CN 102042381 A CN102042381 A CN 102042381A CN 2010106200535 A CN2010106200535 A CN 2010106200535A CN 201010620053 A CN201010620053 A CN 201010620053A CN 102042381 A CN102042381 A CN 102042381A
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Abstract
The invention discloses a mode switching control system for a differential. The system is used for controlling the differential after a differential mode switching command is given out. The system comprises a detecting device (1) and a control device (2), wherein the detecting device is used for detecting the running state of a vehicle; the input end of the control device is connected with the detecting device (1) and the output end of the control device is connected with a differential (8); the control device (2) judges whether the vehicle runs at a low speed and/or in a straight line according to the running state; when the vehicle runs at a low speed and/or in a straight line, the current mode of the differential (8) is switched; and when the vehicle runs neither at a low speed nor in a straight line, the current mode of the differential (8) remains. The system can improve the safety of differential mode switching. The invention also discloses a mode switching control method for the differential. The method has the same technical effects as the control system.
Description
Technical field
The present invention relates to the vehicle technology field, particularly a kind of mode switching control system that is used for the differential mechanism of vehicle.The invention still further relates to a kind of mode switch control method of differential mechanism.
Background technique
Along with the high speed development of national economy and urban construction, vehicle is as the main machinery and the important means of transportation of industrial construction, and the effect of performance is more and more important.
Generally, ransaxle between the left and right wheels of vehicle is equipped with differential mechanism, mainly form, be used for guaranteeing two side drive wheel being rotated with different rotating speeds in two side drive wheel transmitting torques by differential carrier, planetary pinion, planet pin, differential gear.
Differential mechanism has two kinds of mode of operations, i.e. differential pattern and differential locking mode.The differential pattern is used for that turn inside diameter travels, car brakeing, and during situation such as the road surface is uneven, and differential mechanism is realized the different angular velocity of driving wheels with separately-driven method, guarantees that wheel does pure rolling under the cruising state; The differential locking mode can make the coaxial connection of left and right wheels rigidity, and drives rotation with same angular velocity, improves the traffic capacity of vehicle on bad road surface.
Because the vehicle body of vehicle is long, weight is bigger, usually adopt multiaxis to drive, all need to install differential mechanism on each live axle, these differential mechanisms make vehicle no matter under the differential pattern still is the differential locking mode, wheel is all done PURE ROLLING with ground, and vehicle has the good traffic capacity.Therefore, the switching to two kinds of mode of operations of differential mechanism require that an intelligence is arranged, the controlling method of safety.
In the prior art, operator change the pattern of differential mechanism usually according to different pavement behavior by diverter switch.Yet,, lack judgement to the secondary actual motion state of differential gear because operator when carrying out mode switching, are to operate by subjective judgement.When vehicle is being run at high speed and non-rectilinear when travelling, the gear pair of differential mechanism inside still is in the state of running up, the mode of operation that switch differential mechanism this moment can cause the meshed gears pair not throw off fully, treat that the meshed gears pair can not mesh fully, and the part meshed gears is because unbalance stress produces stress deformation, when serious even tooth phenomenon, damage gear pair take place to beat, cause whole differential mechanism to scrap.
Therefore,, provide a kind of mode switching control system of differential mechanism how on the basis of existing technology, the Security when improving the mode switching of differential mechanism is that those skilled in the art should urgent problem.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of mode switching control system of differential mechanism, and the mode switching control system of this differential mechanism can improve the Security of differential mechanism when mode switching.Another technical problem that the present invention will solve is for providing a kind of mode switch control method of differential mechanism.
For solving the problems of the technologies described above, the invention provides a kind of mode switching control system of differential mechanism, be used for the order of differential mechanism mode switching send after to the control of differential mechanism, comprising:
Detection device is used to detect the travelling state of vehicle;
Control gear, its input end is connected in described detection device, and its output terminal is connected in described differential mechanism; Described control gear is judged described vehicle whether low speed driving and/or straight-line travelling according to described travelling state;
When described low vehicle speeds and/or straight-line travelling, switch the present mode of described differential mechanism;
When described vehicle is not a low speed driving, in the time of neither straight-line travelling, keep the present mode of described differential mechanism constant.
Preferably, also comprise solenoid valve, described control gear is by controlling the present mode that electricity condition switches or keep described differential mechanism that gets of described solenoid valve.
Preferably, also comprise display unit, be used to detect the present mode of described differential mechanism, and show the present mode of described differential mechanism and the travelling state of described vehicle;
When described differential mechanism is in the differential locking mode, and when described low vehicle speeds and/or straight-line travelling, described display unit normally shows;
When described differential mechanism is in the differential locking mode, and described vehicle is not low speed driving, and in the time of neither straight-line travelling, described display unit shows with Type of alarm;
When described differential mechanism was in the differential pattern, described display unit did not show.
Preferably, also comprise the lock-in detection switch, described display unit detects the present mode of described differential mechanism by the state of described lock-in detection switch.
Preferably, described display unit is specially tutorial light.
The present invention also provides a kind of mode switch control method of differential mechanism, be used for the order of differential mechanism mode switching send after to the control of differential mechanism, may further comprise the steps:
101) travelling state of detection vehicle;
102) receive described travelling state, and judge described vehicle whether low speed driving and/or straight-line travelling according to described travelling state; If described low vehicle speeds and/or straight-line travelling turn to step 103); If described vehicle is not low speed driving, neither straight-line travelling, turn to step 104);
103) present mode of the described differential mechanism of switching;
104) keep the present mode of described differential mechanism constant.
Preferably, described step 103) and described step 104) by control electromagnetic valve electricity condition switches or keeps the present mode of described differential mechanism.
Preferably, step 103) after the present mode that switches described differential mechanism, also comprise:
105) judge whether described differential mechanism is in the differential locking mode, if turn to step 106); If not, turn to step 107);
106) normally show the present mode of described differential mechanism and the travelling state of described vehicle;
107) do not show current state;
Step 104) keep the present mode of described differential mechanism constant after, also comprise:
108) judge whether described differential mechanism is in the differential locking mode, if turn to step 109); If not, turn to step 110);
109) show the present mode of described differential mechanism and the travelling state of described vehicle with Type of alarm;
110) do not show current state.
Preferably, step 105) and step 108) judge the present mode of described differential mechanism by the state of lock-in detection switch.
Preferably, described step 106) and step 109) show the present mode of described differential mechanism and the travelling state of described vehicle by tutorial light.
When carrying out the mode switching of differential mechanism, the mode switching control system of differential mechanism provided by the invention comprises: detection device, send the travelling state that vehicle is detected in the back in the order of differential mechanism mode switching, and concurrent seeing off sailed state; Control gear receives travelling state and judges vehicle whether low speed driving and/or straight-line travelling, if then switch the present mode of differential mechanism, if not then keep the present mode of differential mechanism constant.
By the working procedure of the mode switching control system of above-mentioned differential mechanism as can be seen, after sending switching command, only be under the state of low speed driving and/or straight-line travelling at vehicle, differential mechanism can be finished the switching of pattern, this moment, gear pair can well be thrown off and engagement, had avoided the stress deformation that produces owing to the gear pair local pressure under fast state.
This shows that the mode switching control system of differential mechanism provided by the invention can improve the Security of differential mechanism when mode switching, has strengthened the functional reliability of differential mechanism, reaches the purpose of control, has also further prolonged the working life of differential mechanism.
In the concrete mode of execution of another kind, the mode switching control system of differential mechanism provided by the present invention can also comprise display unit, and this display unit is used to detect the present mode of differential mechanism, and shows the present mode of differential mechanism and the travelling state of vehicle; When differential mechanism is in the differential locking mode, and when low vehicle speeds and/or straight-line travelling, display unit normally shows; When differential mechanism is in the differential locking mode, and vehicle is not low speed driving, and in the time of neither straight-line travelling, display unit shows with Type of alarm; When differential mechanism was in the differential pattern, display unit did not show.According to the demonstration result of display unit, operator can grasp the mode of operation of differential mechanism and the travelling state of vehicle in real time, and according to showing that the result carries out safe and reliable operation.
The mode switch control method of differential mechanism provided by the invention also has the technique effect identical with the mode switching control system of differential mechanism, does not repeat them here.
Description of drawings
Fig. 1 is the structured flowchart of first kind of embodiment of the mode switching control system of differential mechanism provided by the present invention;
Fig. 2 is the structured flowchart of second kind of embodiment of the mode switching control system of differential mechanism provided by the present invention;
Fig. 3 is the structured flowchart of the third embodiment of the mode switching control system of differential mechanism provided by the present invention;
Fig. 4 is the structured flowchart of the 4th kind of embodiment of the mode switching control system of differential mechanism provided by the present invention;
Fig. 5 is the flow chart of first kind of embodiment of the mode switch control method of differential mechanism provided by the present invention;
Fig. 6 is the flow chart of second kind of embodiment of the mode switch control method of differential mechanism provided by the present invention;
Fig. 7 is the flow chart of the third embodiment of the mode switch control method of differential mechanism provided by the present invention.
Embodiment
Core of the present invention is for providing a kind of mode switching control system of differential mechanism, and the mode switching control system of this differential mechanism can improve the Security of differential mechanism when mode switching.Another core of the present invention is for providing a kind of mode switch control method of differential mechanism.
In order to make those skilled in the art understand technological scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structured flowchart of first kind of embodiment of the mode switching control system of differential mechanism provided by the present invention.
In a kind of concrete mode of execution, as shown in Figure 1, the mode switching control system of a kind of differential mechanism provided by the present invention comprises: detection device 1, be used for sending the travelling state that vehicle is detected in the back in the order of differential mode switching, and concurrent seeing off sailed state; Control gear 2, be used to receive travelling state, and judge vehicle whether low speed driving and/or straight-line travelling according to travelling state, when low vehicle speeds and/or straight-line travelling, control gear 2 switches the present mode of differential mechanism 8, when vehicle is not a low speed driving, in the time of neither straight-line travelling, control gear 2 keeps the present mode of differential mechanisms 8 constant.
By the working procedure of the mode switching control system of above-mentioned differential mechanism as can be seen, after sending switching command, only be under the state of low speed driving and/or straight-line travelling at vehicle, differential mechanism 8 can be finished the switching of pattern, this moment, gear pair can well be thrown off and engagement, had avoided the stress deformation that produces owing to the gear pair local pressure under fast state.
This shows that the mode switching control system of differential mechanism provided by the invention can improve the Security of differential mechanism 8 when mode switching, has strengthened the functional reliability of differential mechanism 8, reaches the purpose of control, has also further prolonged the working life of differential mechanism.
Need to prove, specifically do not limit the standard of low speed driving and straight-line travelling in the above-mentioned embodiment, for example, the speed of a motor vehicle can be set at low speed driving greater than 5m/s and less than 30m/s, corner is set at straight-line travelling less than 10 degree, certainly, above-mentioned control gear 2 can also low speed driving and the standard of straight-line travelling be set to other values, those skilled in the art can select voluntarily according to different road conditions or different needs.
The concrete control mode of the mode switching control system of above-mentioned differential mechanism can also further be set.
Please refer to Fig. 2, Fig. 2 is the structured flowchart of second kind of embodiment of the mode switching control system of differential mechanism provided by the present invention.
As shown in Figure 2, the mode switching control system of above-mentioned differential mechanism can comprise solenoid valve 3, and above-mentioned control gear 2 switches the pattern of differential mechanism 8 by the "on" position of control electromagnetic valve 3.The energising of a solenoid valve 3, outage can be controlled two kinds of switchings between the pattern, above-mentioned control gear 2 can be according to the pattern after pattern before the mode switching of differential mechanism 8 and the switching, the solenoid valve 3 of two kinds of patterns of control is located at working state, when differential mechanism 8 by the differential mode switching during to the differential locking mode, control gear 2 can control electromagnetic valve 3 make its energising, and then the switching of differential mechanism 8 implementation patterns; When differential mechanism 8 switched to the differential pattern by the differential locking mode, control gear 2 can be controlled above-mentioned solenoid valve 3 and make its outage, and then the switching of differential mechanism 8 implementation patterns.The pattern of differential mechanism 8 can realize switching simply, easily, easily like this.
Certainly, above-mentioned solenoid valve 3 also can be replaced by other devices that can meet the demands, and is not restricted to above-mentioned embodiment; Further, by the energising of solenoid valve 3, the mode switching that outage realizes, also be not limited to aforesaid way, also can the energising by solenoid valve 3 realize that the differential pattern switch to the differential pattern by the differential locking mode, the outage by solenoid valve 3 realize the differential pattern by the differential mode switching to the differential locking mode.
Further, above-mentioned solenoid valve 3 can be specially self-locking electromagnetic valve, and self-locking electromagnetic valve is meant the solenoid valve with auto-lock function, can make vehicle remain on the state that differential mechanism switches the back pattern, before the mode switching of next differential mechanism 8 takes place, the mode state operation after keeping this time switching.
Please refer to Fig. 3, Fig. 3 is the structured flowchart of the third embodiment of the mode switching control system of differential mechanism provided by the present invention.
In the third concrete mode of execution, as shown in Figure 3, the mode switching control system of differential mechanism provided by the present invention can also comprise display unit 4, this display unit 4 is used to detect the present mode of differential mechanism 8, and shows the present mode of differential mechanism 8 and the travelling state of vehicle; When differential mechanism 8 is in the differential locking mode, and when low vehicle speeds and/or straight-line travelling, display unit 4 normally shows; When differential mechanism 8 is in the differential locking mode, and vehicle is not low speed driving, and in the time of neither straight-line travelling, display unit 4 shows with Type of alarm; When differential mechanism 8 was in the differential pattern, display unit 4 did not show.
Demonstration result according to display unit 4, operator can grasp the mode of operation of differential mechanism 8 and the travelling state of vehicle in real time, and, unsafe operations such as turning have been avoided under differential mechanism 8 is in the situation of differential locking mode, making according to showing that the result carries out safe and reliable operation.
Particularly, the mode switching control system of above-mentioned differential mechanism can also comprise lock-in detection switch 5, and display unit 4 can detect the present mode of differential mechanism 8 by the state of lock-in detection switch 5.Lock-in detection switch 5 can be connected in differential mechanism 8, and control locking detecting switch 5 makes it work as differential mechanism 8 closure when being in the differential locking mode, thereby display unit 4 is communicated with differential mechanism 8, at this moment, and the travelling state of display unit 4 demonstration vehicles; Control locking detecting switch 5 is worked as when differential mechanism 8 is in the differential pattern it and is disconnected, thereby display unit 4 is not communicated with differential mechanism 8, does not show any information.By lock-in detection switch 5 is set, display unit 4 can detect differential mechanism 8 easily and be in which kind of mode of operation, thereby operates accordingly according to the travelling state of vehicle.
Further, above-mentioned display unit 4 can be tutorial light, when differential mechanism 8 is in the differential locking mode, and when low vehicle speeds and/or straight-line travelling, tutorial light Chang Liang; When differential mechanism 8 is in the differential locking mode, and vehicle is not low speed driving, in the time of neither straight-line travelling, and the tutorial light flicker; When differential mechanism 8 was in the differential pattern, tutorial light did not work.Can know the present mode that demonstrates vehicle running state and differential mechanism simply by tutorial light Chang Liang, the three kinds of modes of glimmering, do not work.
Certainly, above-mentioned display unit 4 is not limited only to tutorial light, can also be miscellaneous part, such as being liquid crystal display panel, demonstrates the mode state of current differential mechanism 8 and the travelling state of current vehicle by numeral.
Please refer to Fig. 5, Fig. 5 is the flow chart of first kind of embodiment of the mode switch control method of differential mechanism provided by the present invention.
As shown in Figure 5, the present invention also provides a kind of mode switch control method of differential mechanism, be used for the order of differential mechanism mode switching send after to the control of differential mechanism, may further comprise the steps:
101) travelling state of detection vehicle;
102) receive travelling state, and judge vehicle whether low speed driving or straight-line travelling according to travelling state; If when low vehicle speeds or straight-line travelling, turn to step 103); If vehicle is not a low speed driving neither straight-line travelling the time, turn to step 104);
103) present mode of switching differential mechanism;
104) keep the present mode of differential mechanism constant.
Particularly, above-mentioned steps 103) and step 104) can be by the present mode that electricity condition switches or keep differential mechanism that gets of control electromagnetic valve.
Please refer to Fig. 6, Fig. 6 is the flow chart of second kind of embodiment of the mode switch control method of differential mechanism provided by the present invention.
In another kind of embodiment, as shown in Figure 6, above-mentioned controlling method can comprise:
201) travelling state of detection vehicle;
202) receive travelling state, and judge vehicle whether low speed driving and straight-line travelling according to travelling state; If when low vehicle speeds and straight-line travelling, turn to step 203); If when vehicle is not low speed driving and straight-line travelling, turn to step 204);
203) present mode of switching differential mechanism;
204) keep the present mode of differential mechanism constant.
Please refer to Fig. 7, Fig. 7 is the flow chart of the third embodiment of the mode switch control method of differential mechanism provided by the present invention.
In another kind of embodiment, as shown in Figure 7, the mode switching method of above-mentioned differential mechanism can comprise:
301) travelling state of detection vehicle;
302) receive travelling state, and judge vehicle whether low speed driving or straight-line travelling according to travelling state; If when low vehicle speeds or straight-line travelling, turn to step 303); If vehicle is not low speed driving, in the time of neither straight-line travelling, turn to step 304);
303) present mode of switching differential mechanism;
304) keep the present mode of differential mechanism constant.
Above-mentioned steps 303) after the present mode that switches differential mechanism, also comprise:
305) judge whether differential mechanism is in the differential locking mode, if turn to step 306); If not, turn to step 307);
306) normally show the present mode of differential mechanism and the travelling state of vehicle;
307) do not show the present mode of differential mechanism and the travelling state of vehicle.
Above-mentioned steps 304) after the present mode that keeps differential mechanism is constant, also comprise:
308) judge whether differential mechanism is in the differential locking mode, if turn to step 309); If not, turn to step 310);
309) show the present mode of differential mechanism and the travelling state of vehicle with Type of alarm;
310) do not show the present mode of differential mechanism and the travelling state of vehicle.
Particularly, above-mentioned steps 305) and step 308) present mode of differential mechanism can be detected by the state of lock-in detection switch; Above-mentioned steps 306) and step 309) can show the present mode of differential mechanism and the travelling state of vehicle by tutorial light.
The mode switch control method of above-mentioned differential mechanism has the technique effect similar to control system, does not repeat them here.
More than the mode switching control system and the controlling method thereof of differential mechanism provided by the present invention is described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the mode switching control system of a differential mechanism, be used for the order of differential mechanism mode switching send after to the control of differential mechanism, it is characterized in that, comprising:
Detection device (1) is used to detect the travelling state of vehicle;
Control gear (2), its input end are connected in described detection device (1), and its output terminal is connected in described differential mechanism (8); Described control gear (2) is judged described vehicle whether low speed driving and/or straight-line travelling according to described travelling state;
When described low vehicle speeds and/or straight-line travelling, switch the present mode of described differential mechanism (8);
When described vehicle is not a low speed driving, in the time of neither straight-line travelling, keep the present mode of described differential mechanism (8) constant.
2. the mode switching control system of differential mechanism according to claim 1, it is characterized in that, also comprise solenoid valve (3), described control gear (2) switches or keeps the present mode of described differential mechanism (8) by the electricity condition that gets of the described solenoid valve of control (3).
3. the mode switching control system of differential mechanism according to claim 1 and 2 is characterized in that, also comprises:
Display unit (4) is used to detect the present mode of described differential mechanism (8), and shows the present mode of described differential mechanism (8) and the travelling state of described vehicle;
When described differential mechanism (8) is in the differential locking mode, and when described low vehicle speeds and/or straight-line travelling, described display unit (4) is normal to be shown;
When described differential mechanism (8) is in the differential locking mode, and described vehicle is not low speed driving, and in the time of neither straight-line travelling, described display unit (4) shows with Type of alarm;
When described differential mechanism (8) was in the differential pattern, described display unit (4) did not show.
4. the mode switching control system of differential mechanism according to claim 3 is characterized in that, also comprises lock-in detection switch (5), and described display unit (4) detects the present mode of described differential mechanism (8) by the state of described lock-in detection switch (5).
5. the mode switching control system of differential mechanism according to claim 3 is characterized in that, described display unit (4) is specially tutorial light.
6. the mode switch control method of a differential mechanism, be used for the order of differential mechanism mode switching send after to the control of differential mechanism, it is characterized in that, may further comprise the steps:
101) travelling state of detection vehicle;
102) receive described travelling state, and judge described vehicle whether low speed driving and/or straight-line travelling according to described travelling state; If described low vehicle speeds and/or straight-line travelling turn to step 103); If described vehicle is not low speed driving, neither straight-line travelling, turn to step 104);
103) present mode of the described differential mechanism of switching;
104) keep the present mode of described differential mechanism constant.
7. the mode switch control method of differential mechanism according to claim 6 is characterized in that, described step 103) and described step 104) by control electromagnetic valve electricity condition switches or keeps the present mode of described differential mechanism.
8. according to the mode switch control method of claim 6 or 7 described differential mechanisms, it is characterized in that,
Step 103) after the present mode that switches described differential mechanism, also comprise:
105) judge whether described differential mechanism is in the differential locking mode, if turn to step 106); If not, turn to step 107);
106) normally show the present mode of described differential mechanism and the travelling state of described vehicle;
107) do not show current state;
Step 104) after the present mode that keeps described differential mechanism is constant, also comprise:
108) judge whether described differential mechanism is in the differential locking mode, if turn to step 109); If not, turn to step 110);
109) show the present mode of described differential mechanism and the travelling state of described vehicle with Type of alarm;
110) do not show current state.
9. the mode switch control method of differential mechanism according to claim 8 is characterized in that step 105) and step 108) judge the present mode of described differential mechanism by the state of lock-in detection switch.
10. the mode switch control method of differential mechanism according to claim 8 is characterized in that, described step 106) and step 109) present mode of described differential mechanism and the travelling state of described vehicle shown by tutorial light.
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| CN2010106200535A CN102042381A (en) | 2010-12-31 | 2010-12-31 | Mode switching control system and method for differential |
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| CN2010106200535A CN102042381A (en) | 2010-12-31 | 2010-12-31 | Mode switching control system and method for differential |
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| CN103496634A (en) * | 2013-09-18 | 2014-01-08 | 徐州重型机械有限公司 | Control method and system for switching operating modes of differential lock, and wheel crane |
| CN104071001A (en) * | 2013-03-29 | 2014-10-01 | 诸城福田汽车科技开发有限公司 | Differential lock control method, differential lock control system and differential lock assembly |
| CN109849916A (en) * | 2018-12-19 | 2019-06-07 | 李克 | Vehicle running state monitoring method and device |
| US11486480B1 (en) | 2021-05-27 | 2022-11-01 | Ford Global Technologies, Llc | Control of electronic locking differential |
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Cited By (4)
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| US11486480B1 (en) | 2021-05-27 | 2022-11-01 | Ford Global Technologies, Llc | Control of electronic locking differential |
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Application publication date: 20110504 |