CN105270403A - Ramp driving assisting system - Google Patents
Ramp driving assisting system Download PDFInfo
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- CN105270403A CN105270403A CN201410349011.0A CN201410349011A CN105270403A CN 105270403 A CN105270403 A CN 105270403A CN 201410349011 A CN201410349011 A CN 201410349011A CN 105270403 A CN105270403 A CN 105270403A
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Abstract
A ramp driving assisting system is suitable for being installed on a vehicle and comprises a detecting module, a database, a starting module and a control module. The detecting module is used for detecting the slope of a ramp, the driving speed of the vehicle, a braking signal and a gear position signal of the vehicle. The starting module acquires a first starting command, corresponding to the slope, from the database, acquires a second starting command, corresponding to the driving speed, from the database, acquires a third starting command, corresponding to the braking signal, from the database, and acquires a fourth starting command, corresponding to the gear position signal, from the database. When the four starting commands are acquired at the same time, a starting signal is output. The control module can improve the transmission efficiency of a continuously variable transmission box and an engine of the vehicle after receiving the starting signal.
Description
Technical field
The present invention relates to a kind of driving ancillary system, particularly relate to a kind of ramp driving ancillary system.
Background technology
Existing employing clutch type without the vehicle of section automatic transmission with hydraulic torque converter brake on ramp stop time, decontrol brake when steerman and make in the process of vehicle start to stepping on the throttle, vehicle easily produces downslide phenomenon, and the degree that glides then depends on ramp angles and car weight.
Once slope comparatively tilts or car body is heavier, steerman is while relieving brake, this change-speed box need bear larger driven loads instantaneously, now, because engine slow speed of revolution in the idling state only can provide lower moment of torsion, and the driven loads of this change-speed box cannot be born, so will easily cause the phenomenon of cutting the engine while relieving brake, severe patient, also easy because of steerman reaction too late, and the traffic accident causing vehicle to glide rapidly.So, dangerous in operation.
Summary of the invention
The object of the present invention is to provide a kind of when vehicle is started to walk on ramp, the ramp driving ancillary system producing downslide phenomenon can be avoided.
Driving ancillary system in ramp of the present invention, be applicable to be arranged on a vehicle, this vehicle comprise an engine, engine control unit that can control this engine speed, one to be connected with this engine and can switch between multiple gear and can change and driving efficiency between this engine without section Automatic Transmission, and one can control this gear box control unit without section Automatic Transmission, this ramp driving ancillary system comprises a detecting module, data bank, a startup module, and one controls module.
This detecting module is for detecting the gradient in this ramp, the moving velocity of this vehicle and brake signal, and this is without the gear signal of section Automatic Transmission.
This data bank has built this gradient, this moving velocity, this brake signal, and this gear signal weighted data.
This startup module corresponds to this data bank and obtains first startup command, obtains second startup command when this moving velocity is less than an idle speed value, obtains the 3rd startup command when this vehicle corresponds to this data bank according to this brake signal in time braking corresponding to this data bank after this gradient is greater than a starting angular and continues a steady state time, and obtain the 4th startup command according to this gear signal corresponding to this data bank, when to possess above-mentioned startup command simultaneously, export one and start signal.
This control module is electrically connected with this startup module and this gear box control unit, and can, after this startup signal of reception, utilize this gear box control unit to improve this without the driving efficiency between section Automatic Transmission and this engine.
Driving ancillary system in ramp of the present invention, this gradient weighted data of data bank be with headstock upward slope upwards on the occasion of, the downward descending of headstock is negative value, this startup module be when this gradient weighted data on the occasion of and for D shelves, and this gradient weighted data be negative value and for one of them of R shelves time, correspond to this data bank according to this gear signal and obtain the 4th startup command.
Driving ancillary system in ramp of the present invention, this startup module is after this startup signal of output and when continuing to obtain this first startup command, even if this gear signal be transformed to P shelves and N shelves wherein any one, this startup module still can be made to continue to correspond to this data bank and to obtain the 4th startup command.
Driving ancillary system in ramp of the present invention, this steady state time is 400ms.
Driving ancillary system in ramp of the present invention, this starting angular is 3.5 degree.
Driving ancillary system in ramp of the present invention, this idle speed value is 1kph.
Driving ancillary system in ramp of the present invention, this startup module is after this startup signal of output and when continuing to obtain this first startup command, before this moving velocity is less than a releasing speed, this startup module all can be made to continue to correspond to this data bank and to obtain this second startup command.
Driving ancillary system in ramp of the present invention, this releasing speed is 6kph.
Driving ancillary system in ramp of the present invention, this has the power-transfer clutch of an oil pressure actuated without section Automatic Transmission, after this control module receives this startup signal, by raising oil pressure and this makes power-transfer clutch do, and then synchronously improve this without the driving efficiency between section Automatic Transmission and this engine.
Driving ancillary system in ramp of the present invention, this control module is after this startup signal of reception, and synchronous this engine speed that improves is to 1000rpm ~ 1200rpm.
Useful effect of the present invention is: collect described startup command by this startup module, this is improved without the driving efficiency between section Automatic Transmission and this engine again by this control module, really can improve the degree of stability of this vehicle when uphill starting and fluency, and then avoid producing downslide phenomenon.
Accompanying drawing explanation
Fig. 1 is a schematic diagram, and an embodiment of ramp of the present invention driving ancillary system is described;
Fig. 2 is a schematic diagram of this embodiment;
Fig. 3 is a diagram of circuit of this embodiment;
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figures 1 and 2, the embodiment of driving ancillary system in ramp of the present invention is applicable to be arranged on a vehicle 2, this vehicle 2 comprises the engine control unit 22 (ECU that 21, one, an engine can control this engine 21 rotating speed, EngineControlUnit), one to be connected with this engine 21 and can switch between multiple gear without section Automatic Transmission 23 (CVT, ContinuouslyVariableTransmission), and one can control this gear box control unit 24 (TCU, TransmissionControlUnit) without section Automatic Transmission 23.This has the power-transfer clutch 231 of an oil pressure actuated without section Automatic Transmission 23, can change whereby and driving efficiency between this engine 21.The embodiment of driving ancillary system in ramp of the present invention comprises a detecting module 3, data bank 4, and starts module 5, and one controls module 6.In the present embodiment, be the signal transmission of being reached each inter-module by a controller local area network (CAN, ControllerAreaNetwork, figure do not show), can improve whereby each inter-module communication efficiency and can by spending.
This detecting module 3 is for detecting the gradient in this ramp, the moving velocity of this vehicle 2 and brake signal, and this is without the gear signal of section Automatic Transmission 23.
In the present embodiment, this gradient utilizes a gradient perceptron (SlopeSensor, figure do not show) to measure.It is worth mentioning that, when this gradient perceptron produces abnormal, specific error messages can be obtained from this controller local area network, and the function of synchronous temporary close ramp driving of the present invention ancillary system.
This data bank 4 has built this gradient, this moving velocity, this brake signal, and these gear signal equal weight data.In the present embodiment, this gradient weighted data except a tilt angle theta (as shown in Figure 1) is provided, also with headstock upward slope be upwards on the occasion of the descending that, headstock is downward be negative value.
This startup module 5 corresponds to this data bank 4 and obtains a first startup command K1 after this gradient is greater than a starting angular θ 1 (as shown in Figure 1) and continues a steady state time, correspond to this data bank 4 when this moving velocity is less than an idle speed value and obtain a second startup command K2, a the 3rd startup command K3 is obtained when this vehicle 2 corresponds to this data bank 4 according to this brake signal in time braking, and obtain a 4th startup command K4 according to this gear signal corresponding to this data bank 4, when to possess above-mentioned startup command (K1 ~ K4) simultaneously, export one and start signal K.
In the present embodiment, this starting angular is 3.5 degree, and this steady state time is 400ms, and this idle speed value is 1kph.Only this steady state time can adjust for the susceptibility of this gradient perceptron, and then filter out the signal concussion that this gradient perceptron produces before this vehicle 2 is static, this starting angular θ 1 can for this engine 21 exert oneself moment of torsion and elasticity adjustment, namely, the vehicle 2 that horsepower number is larger can be applicable to larger starting angular θ 1, and this idle speed value also can increase and decrease adjustment for traveling comfort when driving.In addition, this startup module 5 is after this startup signal of output K and when continuing to obtain this first startup command K1, before this moving velocity is less than a releasing speed, this startup module 5 all can be made to continue to correspond to this data bank 4 and to obtain this second startup command K2, excellent driving comfort and lower oil consumption can be reached whereby.Preferably, this releasing speed is 6kph.
This startup module 5 corresponds to data bank 4 according to gear signal to obtain the 4th startup command K4.Start module 5 in the present embodiment and obtain the 4th startup command according to positive and negative the determining whether of gear signal and gradient weighted data.When this gradient weighted data on the occasion of and gear signal is D shelves, or this gradient weighted data be negative value and gear signal is R shelves time, this startup module 5 corresponds to this data bank 4 and obtains a 4th startup command K4.Preferably, this startup module 5 is after this startup signal of output K and when continuing to obtain this first startup command K1, even if this gear signal be transformed to P shelves and N shelves wherein any one, this startup module 5 still can be made to continue to correspond to this data bank 4 and to obtain the 4th startup command K4.
This control module 6 is electrically connected with this startup module 5 and this gear box control unit 24, and can, after this startup signal of reception K, utilize this gear box control unit 24 to improve this without the driving efficiency between section Automatic Transmission 23 and this engine 21.
After this control module 6 receives this startup signal K, the oil pressure being improved this power-transfer clutch 231 by this gear box control unit 24 is made this power-transfer clutch 231 start, and then synchronously improve this without the driving efficiency between section Automatic Transmission 23 and this engine 21, preferably, cannot smoothly drive this without section Automatic Transmission 23 because of the low moment of torsion corresponding to slow speed of revolution for avoiding this engine 21 when the idling, and then cause flame-out problem, this gear box control unit 24 in raising this without the driving efficiency between section Automatic Transmission 23 and this engine 21 while, to synchronously be communicated by this controller local area network and this engine control unit 22, and then regulate and control the rotating speed of this engine 21 under different loads.In the present embodiment, the rotating speed of this engine 21 when idling will be brought up between 1000rpm ~ 1200rpm from 750rpm, and the rotating speed that this engine 21 promotes can determine according to this gradient, only also can revise for the different qualities of different car money.
When steerman decontrols brake and during non-open out, this startup module 5 will obtain the startup command (K1 ~ K4) be associated from this data bank 4, and judge whether to meet the condition exporting this startup signal K.Once condition meets, the oil pressure of this power-transfer clutch 231 will maintain and even improve pressure by vehicle 2 crawling, until crawl speed increases, oil pressure will start to weaken, but the rotating speed of this engine 21 when idling still can be higher, until the speed of a motor vehicle stable after, driving ancillary system in ramp of the present invention just understands removing function, and rotating speed when simultaneously this engine 21 rotating speed being reduced to normal idling.If steerman is stepped on the throttle during crawling, driving ancillary system in ramp of the present invention also will be closed, and start to walk to send out according to normal mode.
Consult Fig. 3, and coordinate Fig. 1 and Fig. 2, below namely for the Booting sequence schematic illustration of driving ancillary system in ramp of the present invention:
Flow process 71: vehicle 2 stops at ramp.
Flow process 72: correspond to this data bank 4 according to this gradient and obtain a first startup command K1.
Flow process 73: correspond to this data bank 4 according to this moving velocity and obtain a second startup command K2.
Flow process 74: correspond to this data bank 4 according to this brake signal and obtain a 3rd startup command K3.
Flow process 75: correspond to this data bank 4 according to this gear signal and obtain a 4th startup command K4.
Flow process 76: when to possess above-mentioned startup command (K1 ~ K4) simultaneously, this startup module 5 exports this startup signal K to this control module 6.If wherein any one step does not meet, then this startup module 5 does not export this startup signal K, and now this control module 6 cannot start.
Flow process 77: this gear box control unit 24 improves this without the driving efficiency between section Automatic Transmission 23 and this engine 21 after receiving the control signal of this control module 6, and according to gradient size, require that this engine 21 raises speed to 1000rpm ~ 1200rpm by this engine control unit 22.
Flow process 78: after steerman is stepped on the throttle, ramp driving ancillary system removing function of the present invention.Though when steerman is not stepped on the throttle, when the speed of a motor vehicle exceedes this releasing speed, the function of ramp of the present invention driving ancillary system will be removed.
Formed by said structure, can so that advantage of the present invention and effect be summarized as follows:
One, this startup module 5 is to should this gradient, this moving velocity, this brake signal of data bank 4, and these gear signal equal weight data, can elasticity and judge vehicle status accurately, and then the traveling comfort improved in vehicle 2 traveling and safety.
Two, by this gear box control unit 24 in raising this without the driving efficiency between section Automatic Transmission 23 and this engine 21 while, synchronous and this engine control unit 22 communication, and regulate and control the rotating speed of this engine 21 under different loads, can really keep this without the transmission of power between section Automatic Transmission 23 and this engine 21, and then the problem avoiding vehicle flame-out, improve the safety on using.
If three detect the gradient while, steerman change gear to P shelves and N shelves wherein any one time, the present embodiment still can maintain higher idling, with avoid steerman become again once again D shelves and R shelves wherein any one time, cause the problem that this engine 21 is flame-out, enter a step and improve the safety on using.
Though four, when steerman is not stepped on the throttle, when the speed of a motor vehicle exceedes this releasing speed, the function of ramp of the present invention driving ancillary system will be removed, and when avoiding not setting speed of a motor vehicle higher limit, cause the problem that vehicle rushes cruelly.
In sum, described startup command is collected by this startup module, this is improved without the driving efficiency between section Automatic Transmission and this engine again by this control module, really the degree of stability of this vehicle when uphill starting and fluency can be improved, and then avoid producing downslide phenomenon, so really object of the present invention can be reached.
Claims (10)
1. a ramp driving ancillary system, be applicable to be arranged on a vehicle, this vehicle comprise an engine, engine control unit that can control this engine speed, one to be connected with this engine and can switch between multiple gear and can change and driving efficiency between this engine without section Automatic Transmission, and one can control this gear box control unit without section Automatic Transmission, it is characterized in that:
This ramp driving ancillary system comprises:
A detecting module, for detecting the gradient in this ramp, the moving velocity of this vehicle and brake signal, and this is without the gear signal of section Automatic Transmission;
A data bank, has built this gradient, this moving velocity, this brake signal, and this gear signal weighted data;
One starts module, after this gradient is greater than a starting angular and continues a steady state time, correspond to this data bank obtain first startup command, obtain second startup command when this moving velocity is less than an idle speed value corresponding to this data bank, obtain the 3rd startup command when this vehicle corresponds to this data bank according to this brake signal in time braking, and obtain the 4th startup command according to this gear signal corresponding to this data bank, when to possess above-mentioned startup command simultaneously, export one and start signal; And
One controls module, is electrically connected with this startup module and this gear box control unit, and can, after this startup signal of reception, utilize this gear box control unit to improve this without the driving efficiency between section Automatic Transmission and this engine.
2. driving ancillary system in ramp according to claim 1, it is characterized in that: this gradient weighted data of this data bank be with headstock upward slope upwards on the occasion of, the downward descending of headstock is negative value, this startup module be when this gradient weighted data on the occasion of and for D shelves, and this gradient weighted data be negative value and for one of them of R shelves time, correspond to this data bank according to this gear signal and obtain the 4th startup command.
3. driving ancillary system in ramp according to claim 2, it is characterized in that: this startup module is in time exporting after this startup signal and continue to obtain this first startup command, even if this gear signal be transformed to P shelves and N shelves wherein any one, this startup module still can be made to continue to correspond to this data bank and to obtain the 4th startup command.
4. driving ancillary system in ramp according to claim 1, is characterized in that: this steady state time is 400ms.
5. driving ancillary system in ramp according to claim 1, is characterized in that: this starting angular is 3.5 degree.
6. driving ancillary system in ramp according to claim 1, is characterized in that: this idle speed value is 1kph.
7. driving ancillary system in ramp according to claim 1, it is characterized in that: this startup module is in time exporting after this startup signal and continue to obtain this first startup command, before this moving velocity is less than a releasing speed, this startup module all can be made to continue to correspond to this data bank and to obtain this second startup command.
8. driving ancillary system in ramp according to claim 7, is characterized in that: this releasing speed is 6kph.
9. driving ancillary system in ramp according to claim 1, it is characterized in that: this has the power-transfer clutch of an oil pressure actuated without section Automatic Transmission, after this control module receives this startup signal, by raising oil pressure and this makes power-transfer clutch do, and then synchronously improve this without the driving efficiency between section Automatic Transmission and this engine.
10. driving ancillary system in ramp according to claim 9, is characterized in that: this control module is after this startup signal of reception, and synchronous this engine speed that improves is to 1000rpm ~ 1200rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349011.0A CN105270403A (en) | 2014-07-22 | 2014-07-22 | Ramp driving assisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349011.0A CN105270403A (en) | 2014-07-22 | 2014-07-22 | Ramp driving assisting system |
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| CN105270403A true CN105270403A (en) | 2016-01-27 |
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| CN201410349011.0A Pending CN105270403A (en) | 2014-07-22 | 2014-07-22 | Ramp driving assisting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962852A (en) * | 2019-11-04 | 2020-04-07 | 北京理工大学 | Control method for hill start of planetary steering gear differential steering vehicle |
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| CN102874257A (en) * | 2012-10-23 | 2013-01-16 | 力帆实业(集团)股份有限公司 | Hill-start assist system for electric car and control method of hill-start assist system |
| CN202879484U (en) * | 2012-07-31 | 2013-04-17 | 浙江吉利汽车研究院有限公司杭州分公司 | Upslope starting auxiliary system and automobile provided with the same |
| CN103195922A (en) * | 2013-03-28 | 2013-07-10 | 长城汽车股份有限公司 | Vehicle and uphill control method and device thereof |
| TWM467593U (en) * | 2013-08-05 | 2013-12-11 | Univ Dayeh | Vehicle uphill start assisting device |
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- 2014-07-22 CN CN201410349011.0A patent/CN105270403A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4576065A (en) * | 1984-09-12 | 1986-03-18 | Eaton Corporation | Automatic transmission controls with multiple downshift off-highway mode |
| CN201380849Y (en) * | 2009-01-22 | 2010-01-13 | 江凌 | Automobile upslope starting auxiliary system |
| CN202879484U (en) * | 2012-07-31 | 2013-04-17 | 浙江吉利汽车研究院有限公司杭州分公司 | Upslope starting auxiliary system and automobile provided with the same |
| CN102874257A (en) * | 2012-10-23 | 2013-01-16 | 力帆实业(集团)股份有限公司 | Hill-start assist system for electric car and control method of hill-start assist system |
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| CN110962852A (en) * | 2019-11-04 | 2020-04-07 | 北京理工大学 | Control method for hill start of planetary steering gear differential steering vehicle |
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Application publication date: 20160127 |