CN107640143B - Uphill starting method, uphill starting system and control unit for vehicle - Google Patents
Uphill starting method, uphill starting system and control unit for vehicle Download PDFInfo
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- CN107640143B CN107640143B CN201610581139.9A CN201610581139A CN107640143B CN 107640143 B CN107640143 B CN 107640143B CN 201610581139 A CN201610581139 A CN 201610581139A CN 107640143 B CN107640143 B CN 107640143B
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- driving wheel
- ramp
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Abstract
The present invention is provided to the uphill starting method of vehicle, this method includes in response to activation signal, the non-driving wheel of abrupt deceleration vehicle；When the slip rate of vehicle reaches the first preset value, stop the braking to non-driving wheel.Corresponding system is also provided.Using this method or the system is executed, can effectively avoid the case where vehicle slip is fallen back in ramp or the accumulated snow ramp driving in the ramp, snow and ice cover for having ice.
Description
Technical field
The present invention relates to vehicle control technologies, more specifically, are related to the uphill starting technology for vehicle.
Background technique
Ice and snow road is driven a vehicle, when especially going up a slope, if driver opens the throttle, the driving wheel road holding of vehicle will pole
Difference, vehicle is very easy to skid in this case, falls back, than relatively hazardous.
Being effectively prevented above situation is the direction that industry is worth thinking.
Summary of the invention
In view of this, can effectively avoid the present invention is provided to the uphill starting method and system of vehicle on the slope for having ice
The case where vehicle slip is fallen back when road, the ramp of snow and ice cover or accumulated snow ramp driving.
The exemplary uphill starting method for vehicle according to the present invention, this method include in response to activation signal, braking
The non-driving wheel of vehicle；When the slip rate of vehicle reaches preset value, stop the braking to non-driving wheel.
It optionally, include the hydraulic list by vehicle in the uphill starting method of vehicle, braking the non-driving wheel
Member applies the power that can brake to the non-driving wheel of vehicle, point of the size of the power and vehicle weight in the line of slope in the ramp
Power sizableness is contrary.
Optionally, in the uphill starting method of vehicle, braking the non-driving wheel to include the electronics system by vehicle
Moving cell applies the power that can brake to the non-driving wheel of vehicle, the line of slope of the size of the power and vehicle weight in the ramp
Component sizableness it is contrary.
Optionally, in the uphill starting method for vehicle, the activation signal generates manually.
Optionally, in the uphill starting method for vehicle, the gravity based on the vehicle measured is in ramp
The variation of line of slope determines that vehicle is in ramp and generates the activation when the slip rate of the vehicle is higher by the second range
Signal；Wherein, the gravity is obtained and/or by the gravity sensor that vehicle is arranged in by setting in the component of ramp line of slope
Set the sensing data acquisition in the longitudinal acceleration sensor of vehicle.
Example according to the present invention also provides the uphill starting system for being used for vehicle, which includes: first unit, raw
At activation signal；Second unit is used to judge the slip rate of vehicle, when the slip rate reaches preset value, generates removal
Signal is removed to the braking of the braking of non-driving wheel；Brake unit is coupled with the first unit, second unit respectively, is rung
Activation signal described in Ying Yu, the non-driving wheel of abrupt deceleration vehicle and receive braking removal signal when, stop to described non-driven
The braking of wheel.
According to another aspect of the invention, control unit is also provided, is arranged in vehicle, it is as described above for executing
Any one method or including it is as described above any one be used for the uphill starting system of vehicle.
Detailed description of the invention
Fig. 1 is the flow chart of the exemplary uphill starting method for vehicle according to the present invention.
Fig. 2 is the relation schematic diagram of vehicle weight G Yu brake force F.
Fig. 3 is the structural schematic diagram of the exemplary uphill starting system for vehicle according to the present invention.
Specific embodiment
Schematic example of the invention is described referring now to attached drawing, identical drawing reference numeral indicates identical element.
Fig. 1 is the flow chart of the exemplary uphill starting method for vehicle according to the present invention.In step 100, in response to
Activation signal, the non-driving wheel of abrupt deceleration vehicle.An example according to the present invention, in response to activation signal, by the hydraulic of vehicle
The non-driving wheel of brake unit vehicle.For the brake force of braking, the component of size and vehicle weight in ramp line of slope
Sizableness is contrary.Alternatively, in response to activation signal, by vehicle deceleration of electrons brake unit vehicle it is non-driven
It moves in turn.
Here, vehicle weight includes both car body gravity and passengers inside the car's gravity.Fig. 2 is vehicle weight G and brake force F
Relation schematic diagram.In Fig. 2, the gravity G of vehicle 10 is made of component G1 and G2, wherein and G1 is component of the gravity G along slope surface 20,
G2 is component of the gravity G on that direction vertical with slope surface 20.Brake force F and partical gravity G1 sizableness, but direction
On the contrary, to offset the gravity for causing vehicle rollback.It should be noted that brake force F refers to the non-drive for being applied to vehicle
The resultant force of brake force on driving wheel, such as two rear-wheels.The brake force for being applied to each wheel can be equal in magnitude, can also be slightly poor
It is different, but the brake force difference in size for being also not excluded for being applied to each wheel in some very special case is larger.Setting can be passed through
Gravity sensor in the car obtains vehicle weight G, thus come determine the application brake force F size.Alternatively,
It can determine that vehicle in the power of ramp line of slope, is equivalent to by the sensing data for the longitudinal acceleration sensor being arranged in vehicle
Partical gravity G1.
As known, the driving force for being applied to four tires of vehicle may not be identical, this depends on pavement behavior etc.
Many factors.It drives for two, two front-wheels are usually main drive wheel, and when climbing, two rear-wheels are then completely in non-driven shape
State or they be non-driving wheel.It exemplary uphill starting method for vehicle and will describe below according to the present invention
Uphill starting system realization drive two in after, can effectively prevent vehicle driving ice landslide road on rollback the case where, realize
Vehicle starting effective and safe on ramp.
For 4-wheel driven car, exemplary uphill starting method for vehicle and it is described below to vehicle according to the present invention
Uphill starting system can be used as the miscellaneous function of the car ramp starting function, such as apply in 4-wheel driven car four-wheel drive system therefore
When barrier, or needed according to driver and enable the miscellaneous function etc..
As an example, the button for generating activation signal can be arranged on the instrument board in vehicle, activation signal will
Brake unit is promoted to remove braking non-driving wheel.In vehicle driving, the ramp of ice or the ramp of snow and ice cover or accumulated snow slope are such as met
Road, driver can operate the button (such as pressing the button) to generate activation signal.The button can be realized appoints for Touch control key etc.
What form appropriate.Alternatively, because the partical gravity of vehicle weight can become when vehicle is in ramp
Change, can determine whether vehicle is in ramp by the partical gravity that gravity sensor provided in a vehicle obtains accordingly, together
When judgement such as automobile body electric stabilizing system ESP output vehicle slip rate whether be higher by the second rate preset value, such as
80%, it is determining that vehicle is in ramp and slip rate 80% or more, is then generating activation signal.Here, by 80% or more
Slip rate shows that the road holding of vehicle is very poor, and in practical application, the second preset value of slip rate can be 50%, 60%, 65% etc.,
It is arranged according to the actual situation.In addition, can also be determined by the sensing data of longitudinal acceleration sensor provided in a vehicle
Vehicle is equivalent to the component G1 of gravity G in the power of ramp line of slope.
In step 102, when the slip rate of vehicle reaches preset value, stop the braking to non-driving wheel.Slip rate and sheet
The meaning that field technical staff is generally understood is consistent.Simply, what slip rate referred to is exactly that ingredient is slided in wheel movement
Shared ratio.Example according to the present invention removes application if the slip rate of vehicle is determined having reached the first preset value
To the braking of non-driving wheel.Wherein, the first preset value of slip rate can be the data between 5% or 10%, can also be the model
Outer other data are enclosed, are set according to the actual conditions of vehicle.
The exemplary uphill starting method for vehicle according to the present invention can in the form of software, the mode of hardware or
The mode that software is engaged with hardware is realized in the existing electronic control unit of vehicle, such as is realized in full-vehicle control unit；Or it is real
It controls in related control unit, or realizes in an individual control unit with car ramp now.
Optionally, exemplary according to the present invention uphill starting method for vehicle can be opened after vehicle igniting
And/or it is described below to the uphill starting system of vehicle.Alternatively, switch button can be arranged on vehicle, by driver's root
This function is opened according to demand, that is to say, that allow exemplary uphill starting method for vehicle according to the present invention and/or under
The uphill starting system for vehicle of text description is in available mode.It wherein, can for opening the switch button of this function
Be with the previously mentioned button for generating activation signal it is same, can by be arranged to the different operation mode of button come
It realizes different functions, for example, for example pressing once is to open this function, that is, allows this method and/or systems described below
It is then to generate activation signal etc. under continuous pressing two in available mode.Example according to the present invention, the ramp for vehicle
Method for starting can also be included in open this function in the case where, indicate in such a way that the indicator light is always on for vehicle
Uphill starting method and/or the uphill starting system for being described below to vehicle are in available mode.It is according to the present invention to show
Example has produced activation signal by indicator light flashing mode instruction, should be in the uphill starting method and/or hereafter of vehicle
The uphill starting system for vehicle of description is just working in the case where uphill starting, brakes to vehicle non-driving wheel, and meeting
As described herein, stop the braking to non-driving wheel when slip rate enters preset range.Instruction about indicator light
Mode indicates different situations etc. by a variety of, such as by setting flicker frequency, does not just repeat one by one herein.
Fig. 3 is the exemplary uphill starting system for vehicle according to the present invention.The system is realized in the car, is being used
In the case where the existing brake unit of vehicle, the uphill starting system for vehicle is coupled with the brake unit to transmit
To brake unit and when needing to cancel braking, transmission braking stop signal gives the brake unit to activation signal.
The uphill starting system for being used for vehicle includes first unit 50, second unit 52 and brake unit 54.First
Unit 50 and brake unit 54 couple, and second unit 52 and brake unit 54 couple.It is existing that vehicle can be used in brake unit 54
Hydraulic brake unit, or the existing deceleration of electrons unit of vehicle is used, or in some examples, which both includes liquid
Suppress moving cell includes deceleration of electrons unit again.
First unit 50 generates activation signal, and activation signal generated is sent to brake unit 54.Swash in response to this
Signal living, the non-driving wheel of 54 abrupt deceleration vehicle of brake unit, for the brake force of braking, size and vehicle weight are on ramp slope
The component sizableness in face direction but contrary.Second unit 52 generates braking and goes when slip rate reaches the first preset value
Except signal, to remove the braking to non-driving wheel.Slip rate can be provided by vehicle ESP, in some examples, can also be according to ESP
The data such as car wheel speed provided calculate slip rate.Wherein, slip rate can be the data between 5% or 10%,
But other data outside the range are set according to the actual conditions of vehicle.
An example according to the present invention, the first unit 50 are button, so that occupant is by operating the button
Generate activation signal.For example, on button setting instrument board, more specifically, it is arranged at arm's length in driver driving
Position at.
According to another example of invention, the gravity sensor of the first unit 50 and setting in the car couples and and vehicle
Body electronics systems stabilisation ESP coupling.The partical gravity that first unit 50 is sensed by the gravity sensor in combination with
Slip rate provided by body electronics systems stabilisation ESP determines whether to generate activation signal, is determining vehicle according to partical gravity
In ramp and vehicle slip rate it is larger (such as 80% or higher), that is, driving wheel road holding difference in the case where generate
The activation signal.
Vehicle can also be determined in ramp slope surface by the sensing data of longitudinal acceleration sensor provided in a vehicle
The power in direction is equivalent to the component G1 of gravity G, in this case, need to be by first unit 50 and the longitudinal acceleration sensor coupling
It connects.
As mentioned above, this be used for vehicle uphill starting system can vehicle igniting after, that is, be turned on to
In available mode, can also switch button by being arranged on vehicle come manual operation, there is driver to open as needed
The system.In the case where first unit 50 is button, which can be same button with the first unit.As
It described, the function of opening the system or generate activation signal is reached by the different operation to button.
The exemplary uphill starting system for vehicle can be realized as software, hardware or its engagement according to the present invention.No matter
Being implemented as software, hardware or its engagement, the uphill starting system for being used for vehicle can be loaded into or be loaded in vehicle
Full-vehicle control unit in, or be loaded into or be loaded in and travelled in related control unit with control car ramp, or be implemented
For an individual control unit.
For executing the uphill starting method or use above-mentioned example of the present invention for vehicle in above-mentioned example of the present invention
In the vehicle for the uphill starting system of vehicle for, encounter such as having ice, there is accumulated snow, accumulated snow to mix with ice be easy
When vehicle tyre being made to lose the ramp of road holding, button is can be operated in driver or first unit (is embodied as button in first unit
Example in) generate activation signal, and the brake unit of vehicle abrupt deceleration vehicle non-driving wheel accordingly, prevent vehicle on ramp after
It moves back, and stops the braking to non-driving wheel when the slip rate of vehicle is reduced to the first preset value, so that vehicle can be safe and effective
Ground carries out uphill starting.
Above-described each example or alternative can be combined with each other realization, can also be implemented separately.
Although in the above description in conjunction with attached drawing, disclosing specific embodiments of the present invention, art technology
Personnel are it is understood that can be deformed or be modified to disclosed specific embodiment without departing from the spirit of the invention.
The embodiment of the present invention is only used for signal and is not intended to restrict the invention.
Claims (10)
1. a kind of uphill starting method for vehicle, this method comprises:
In response to activation signal, the non-driving wheel of abrupt deceleration vehicle；
When the slip rate of vehicle reaches the first preset value, stop the braking to non-driving wheel.
2. being used for the uphill starting method of vehicle as described in claim 1, wherein the non-driving wheel packet of the abrupt deceleration vehicle
It includes:
Apply the power that can be braked to the non-driving wheel of vehicle by the hydraulic pressure unit of vehicle, the size and vehicle weight of the power exist
The component sizableness of the line of slope in the ramp is contrary.
3. being used for the uphill starting method of vehicle as described in claim 1, wherein the non-driving wheel packet of the abrupt deceleration vehicle
It includes:
Apply the power that can be braked, the size and vehicle weight of the power to the non-driving wheel of vehicle by the deceleration of electrons unit of vehicle
Power is contrary in the component sizableness of the line of slope in the ramp.
4. the uphill starting method for vehicle as described in any one of claims 1 to 3, wherein the activation signal
It generates manually.
5. the uphill starting method for vehicle as described in any one of claims 1 to 3, in which:
Determine that vehicle is in ramp and in the vehicle in the variation of ramp line of slope based on the gravity of the vehicle measured
Slip rate generate the activation signal when being higher by the second preset value；
Wherein, the gravity is obtained and/or by the gravity sensor that vehicle is arranged in by setting in the component of ramp line of slope
Set the sensing data acquisition in the longitudinal acceleration sensor of vehicle.
6. a kind of uphill starting system for vehicle, the system include:
First unit generates activation signal；
Second unit is used to judge the slip rate of vehicle, when the slip rate reaches the first preset value, generates removal to non-
The braking of the braking of driving wheel removes signal；
Brake unit is coupled with the first unit, second unit respectively, in response to the activation signal, abrupt deceleration vehicle
Non-driving wheel and when receiving braking removal signal, stops braking to the non-driving wheel.
7. being used for the uphill starting system of vehicle as claimed in claim 6, wherein the brake unit is the hydraulic list of vehicle
The deceleration of electrons unit of member and/or vehicle.
8. the uphill starting system for vehicle as claimed in claims 6 or 7, which is button.
9. the uphill starting system for vehicle as claimed in claims 6 or 7, the first unit with it is provided in a vehicle heavy
The longitudinal acceleration sensor of force snesor and/or vehicle is coupled to obtain vehicle weight in the component of ramp line of slope, and
The vehicle body of the first unit and vehicle stablizes electric stabilizing system ESP coupling to obtain the slip rate of vehicle, and in the component
Show that vehicle is in ramp and the slip rate is higher by the second preset value and generates activation signal.
10. a kind of control unit is arranged in vehicle, is used for as described in any one of claims 1 to 5 for executing
The uphill starting method of vehicle includes the uphill starting system for vehicle as described in any one of claim 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581139.9A CN107640143B (en) | 2016-07-22 | 2016-07-22 | Uphill starting method, uphill starting system and control unit for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581139.9A CN107640143B (en) | 2016-07-22 | 2016-07-22 | Uphill starting method, uphill starting system and control unit for vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN107640143A CN107640143A (en) | 2018-01-30 |
| CN107640143B true CN107640143B (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610581139.9A Active CN107640143B (en) | 2016-07-22 | 2016-07-22 | Uphill starting method, uphill starting system and control unit for vehicle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060108865A1 (en) * | 2002-06-20 | 2006-05-25 | Thomas Sauter | Method and device for brake control in a vehicle during the starting process |
| US20090063000A1 (en) * | 2007-08-28 | 2009-03-05 | Hiroyuki Kodama | Vehicle control system |
| CN102050116A (en) * | 2010-12-17 | 2011-05-11 | 西安正昌电子有限责任公司 | Electronic parking braking method |
| CN105292118A (en) * | 2015-11-10 | 2016-02-03 | 中国重汽集团济南动力有限公司 | Heavy-duty vehicle hill-start assist control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620879B2 (en) * | 1987-03-10 | 1994-03-23 | トヨタ自動車株式会社 | Vehicle acceleration slip controller |
-
2016
- 2016-07-22 CN CN201610581139.9A patent/CN107640143B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060108865A1 (en) * | 2002-06-20 | 2006-05-25 | Thomas Sauter | Method and device for brake control in a vehicle during the starting process |
| US20090063000A1 (en) * | 2007-08-28 | 2009-03-05 | Hiroyuki Kodama | Vehicle control system |
| CN102050116A (en) * | 2010-12-17 | 2011-05-11 | 西安正昌电子有限责任公司 | Electronic parking braking method |
| CN105292118A (en) * | 2015-11-10 | 2016-02-03 | 中国重汽集团济南动力有限公司 | Heavy-duty vehicle hill-start assist control method |
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|---|---|
| CN107640143A (en) | 2018-01-30 |
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