CN102294999A - Driving mode control system used for four-wheel driven automobile - Google Patents
Driving mode control system used for four-wheel driven automobile Download PDFInfo
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- CN102294999A CN102294999A CN2010102172377A CN201010217237A CN102294999A CN 102294999 A CN102294999 A CN 102294999A CN 2010102172377 A CN2010102172377 A CN 2010102172377A CN 201010217237 A CN201010217237 A CN 201010217237A CN 102294999 A CN102294999 A CN 102294999A
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Abstract
The invention provides a driving mode control system used for a four-wheel driven automobile, comprising a front axle on-off controller (1) and a motor (2), wherein the front axle on-off controller (1) and the motor (2) are mutually connected. The system also comprises an automobile controller (3) of the front axle on-off controller (1); the automobile body controller (3) receives an automobile speed signal from a vehicle-control local area network bus; according to the magnitude of the automobile speed signal, an automobile speed magnitude indicator signal is output to the front axle on-off controller (1); and the front axle on-off controller (1) outputs a control signal to the motor (2) to control the motor (2) to carry out positive rotation and negative rotation according to an input gear signal and the speed magnitude indicator signal so as to control the driving mode of the four-wheel driven automobile. In the driving mode control system used for a four-wheel driven automobile, which is provided by the invention, the automobile body controller is used for receiving the signal relevant to automobile speed from the vehicle-control local area network.
Description
Technical field
The application relates to field of automobile control, relates in particular to a kind of drive pattern control system that is used for four-wheel drive car.
Background technology
(4 wheel driven, 4WD) automobile is meant that the automobile front and back wheel is all dynamic to four wheel drive, can propulsive effort be distributed on all wheels in front and back by different proportion according to the travel conditions of automobile front and back wheel.This four-wheel drive car can adapt to various condition of road surfaces, make that automobile obtains better to quicken and skid resistance, (two drive than traditional two-wheel drive, 2WD) automobile, improved the driveability and the riding stability of automobile, so four wheel drive adopts in some high-performing cars more and more.
General cross-country car or the modal type of drive of other four-wheel drive cars (as pick up) they are the timesharing type of drive, are exactly can be by chaufeur according to the road surface situation, the gear that conversion is different, thus select two-wheel drive mode or four wheel drive pattern.In the drive pattern control system of four-wheel drive car, the propons clutch controller can be according to the gear signal of chaufeur input and in conjunction with the vehicle operating state signals such as vehicle speed signal that obtain from car speed sensor, output control corresponding voltage drives the DC motor forward or reverse, and through driving device power is passed to vehicular clutch and power-transfer clutch is engaged or separate, thereby realize that two drive or the 4 wheel driven mode of operation.
In the drive pattern control system of existing four-wheel drive car, car speed sensor directly is connected to the propons clutch controller by rigid line, vehicle speed signal is sent to the propons clutch controller, thereby the propons clutch controller can and be controlled the rotation of DC machine according to this vehicle speed signal in conjunction with gear signal, for example, when speed was very high, it was two to drive pattern that the propons clutch controller can be forbidden by the 4 wheel driven mode converting, forbids that perhaps driving mode converting by two is the 4 wheel driven pattern; When speed when not being very high, the propons clutch controller can come the conversion drive pattern according to gear signal.
Vehicle speed signal is the necessary incoming signal of drive pattern control system that is used for four-wheel drive car, yet, along with electronic control unit (ECU) increasing in automobile is used, for the reliability of driving a vehicle, increasing ECU need use vehicle speed signal (such as the combination instrument unit), need be connected to the combination instrument unit such as car speed sensor and provide vehicle speed signal to give the combination instrument unit, and car speed sensor connects the rigid line limited amount that, this makes the drive pattern control system that is used for four-wheel drive car possibly can't directly obtain vehicle speed signal by rigid line from car speed sensor, and connect many rigid lines from car speed sensor and can make the wire harness complexity, be unfavorable for the safe operation of vehicle body circuit, more can influence follow-up trouble removal and maintenance.
Summary of the invention
The present invention is directed to the drive pattern control system that is used for four-wheel drive car of the prior art and be difficult for obtaining the problem of vehicle speed signal, proposed a kind of drive pattern control system that is used for four-wheel drive car, this system has solved the problem of obtaining vehicle speed signal.
The invention provides a kind of drive pattern control system that is used for four-wheel drive car, this system comprises interconnective propons clutch controller and electrical motor, wherein, this system also comprises the car body controller (3) that is connected to propons clutch controller (1), described car body controller (3) is from the vehicle control area net bus interface fast signal that returns the vehicle to the garage and knock off, and the size output speed of a motor vehicle height indicator signal according to vehicle speed signal arrives propons clutch controller (1), described propons clutch controller (1) carries out forward or reverse with control motor (2) for electrical motor (2) according to the gear signal and the speed of a motor vehicle height indicator signal output control signal of input, thus the drive pattern of control four-wheel drive car.
The drive pattern control system that is used for four-wheel drive car provided by the invention, owing to comprise the car body controller that is connected to the propons clutch controller, described car body controller from vehicle control area net bus interface return the vehicle to the garage and knock off fast signal and according to the size of vehicle speed signal output speed of a motor vehicle height indicator signal to the propons clutch controller, the propons clutch controller can utilize car body controller to receive speed of a motor vehicle coherent signal from the vehicle control area net like this, be connected to the propons clutch controller and needn't draw rigid line from car speed sensor again, help reducing the rigid line number of drawing, thereby help follow-up malfunction elimination and maintenance from car speed sensor; And described propons clutch controller carries out forward or reverse with control motor (2) for electrical motor (2) according to the gear signal and the speed of a motor vehicle height indicator signal output control signal of input, thereby the drive pattern of control four-wheel drive car.
Description of drawings
Fig. 1 is the scheme drawing that is used for the drive pattern control system of four-wheel drive car of the prior art;
Fig. 2 is the scheme drawing that is used for the drive pattern control system of four-wheel drive car according to of the present invention.
The specific embodiment
In order to understand the application's technical scheme better, below earlier the drive pattern control system that is used for four-wheel drive car of the prior art is done simple the elaboration.
Shown in Fig. 1 is the scheme drawing that is used for the drive pattern control system of four-wheel drive car of the prior art.As shown in fig. 1, propons clutch controller 1 directly receives vehicle speed signal from car speed sensor 4, and, export the rotation direction that different control signals comes control motor 2 according to the vehicle speed signal that receives and in conjunction with the gear signal that receives (gear signal can be the signal that the operation of the drive pattern gear control handle on the vehicle operating panel is obtained according to the user).When electrical motor 2 is just changeing, by the driving device on the car power is passed to preceding bridge clutch, bridge clutch engages before making, thereby realizes two-wheel drive mode; When electrical motor 2 counter-rotatings, by the driving device on the car power is passed to preceding bridge clutch, bridge clutch separates before making, thereby realizes the four wheel drive pattern.The value of the vehicle speed signal that receives when propons clutch controller 1 is lower than predetermined threshold (as 80km/h), the rotation direction of the gear signal change electrical motor 2 that propons clutch controller 1 basis receives (for example, current vehicle speed is 30km/h, if previous gear signal is represented the four wheel drive mode and gear, and current gear signal is represented the two-wheel drive mode gear, then propons clutch controller 1 output control signal makes electrical motor 2 just change into from counter-rotating changes, thereby realizes the transformation from the four wheel drive pattern to two-wheel drive mode); When the speed of a motor vehicle is not less than predetermined threshold (as 80km/h), the constant rotation direction with maintenance electrical motor 2 of the control signal of propons clutch controller 1 output is constant (for example, current vehicle speed is 80km/h, if previous gear signal is represented the four wheel drive mode and gear, and current gear signal is represented the two-wheel drive mode gear, then the control signal of propons clutch controller 1 output does not change according to the variation of gear signal, it is constant to be that propons clutch controller 1 is exported to the control signal of electrical motor 2, so that electrical motor 2 keeps counter-rotating, thereby keep the four wheel drive pattern).As can be seen, the drive pattern control system that is used for four-wheel drive car that provides among Fig. 1 is that directly by rigid line car speed sensor 4 being connected to propons clutch controller 1 obtains vehicle speed signal.
Shown in Fig. 2 is the scheme drawing that is used for the drive pattern control system of four-wheel drive car according to of the present invention.As shown in Figure 2, the drive pattern control system that is used for four-wheel drive car provided by the invention comprises interconnective propons clutch controller 1 and electrical motor 2, wherein, this system also comprises the car body controller 3 that is connected to propons clutch controller 1, described car body controller 3 is from the vehicle control area net bus interface fast signal that returns the vehicle to the garage and knock off, and the size output speed of a motor vehicle height indicator signal according to vehicle speed signal arrives propons clutch controller 1, described propons clutch controller 1 carries out forward or reverse with control motor 2 for electrical motor 2 according to the gear signal and the speed of a motor vehicle height indicator signal output control signal of input, thus the drive pattern of control four-wheel drive car.Wherein, described propons clutch controller 1 is used for making described four-wheel drive car be in two-wheel drive mode when the described electrical motor 2 of control is just changeing, and when the described electrical motor 2 of control reverses, makes described four-wheel drive car be in the four wheel drive pattern.
Car body controller 3 is a kind of intelligentized body electric system administrative units, can realize Based Intelligent Control to car electricss such as indoor light, outdoor light, centrally controrlled locking system, windscreen wiper washing, automatic window defrosting, vehicle body are antitheft, be mainly used in safe, the comfortable and comfort feature that strengthens automobile, car body controller 3 has the bus message communication function, can receive some on-off signals and vehicle control area net (CAN) bus signals in the car, realize the logic control of respective load.Existing car body controller is only used for the control of vehicle body equipment such as vehicle body light, car door, and and do not have signal communication between the chassis control system such as the propons clutch controller.In the drive pattern control system that is used for four-wheel drive car provided by the invention, utilized car body controller 3 come from the CAN bus interface return the vehicle to the garage and knock off fast signal and this car body controller 3 according to the size output speed of a motor vehicle height indicator signal of the vehicle speed signal that receives to propons clutch controller 1.Described speed of a motor vehicle height indicator signal has first value and second value; Described car body controller 3 can be used for when the value of the vehicle speed signal that receives is not less than predetermined threshold, and the output value is that the speed of a motor vehicle height indicator signal of first value arrives propons clutch controller 1; When the value of the vehicle speed signal that receives was lower than predetermined threshold, the output value was that the speed of a motor vehicle height indicator signal of second value arrives propons clutch controller 1.Value is that the speed of a motor vehicle height indicator signal of first value can be low level signal, and value is that the speed of a motor vehicle height indicator signal of second value can be high level signal.Described predetermined threshold can be taken from the value between 50km/h～100km/h, preferably, described predetermined threshold is 80km/h, like this, when the value of the vehicle speed signal that receives when described car body controller 3 is equal to or higher than 80km/h, described car body controller 3 can the output low level signal to propons clutch controller 1, when the value of the vehicle speed signal that receives when described car body controller 3 was lower than 80km/h, described car body controller 3 can be exported high level signal to propons clutch controller 1.Preferably, as long as the value of the vehicle speed signal that car body controller 3 receives is lower than 80km/h, the speed of a motor vehicle height indicator signal that described car body controller 3 is sent to propons clutch controller 1 just keeps high level state always, when having only the value of the vehicle speed signal that receives when car body controller 3 to be equal to or higher than 80km/h, the speed of a motor vehicle height indicator signal that described car body controller 3 is sent to propons clutch controller 1 just becomes low level state.
Described propons clutch controller 1 can be used for when receiving the speed of a motor vehicle height indicator signal that value is first value (as receive be low level speed of a motor vehicle height indicator signal), the control signal that maintenance outputs to electrical motor 2 is constant (for example, when described propons clutch controller 1 receives to low level speed of a motor vehicle height indicator signal, if previous gear signal is represented the four wheel drive mode and gear, and current gear signal is represented the two-wheel drive mode gear, then the control signal of propons clutch controller 1 output does not change according to the variation of gear signal, it is constant to be that propons clutch controller 1 is exported to the control signal of electrical motor 2, so that electrical motor 2 keeps counter-rotating, thereby keep the four wheel drive pattern); When receiving the speed of a motor vehicle height indicator signal that value is second value (as receive into high level speed of a motor vehicle height indicator signal), change according to the gear signal that receives changes the control signal that outputs to electrical motor 2, (for example, when propons clutch controller 1 receives to the speed of a motor vehicle of high level height indicator signal, if previous gear signal is represented the four wheel drive mode and gear, and current gear signal is represented the two-wheel drive mode gear, then propons clutch controller 1 control signal that changes output makes electrical motor 2 just change into from counter-rotating changes, thereby realizes the transformation from the four wheel drive pattern to two-wheel drive mode).
Described system can also comprise interconnective car speed sensor 4 and combination instrument unit 5, described combination instrument unit 5 is connected on the vehicle control area net bus, in order to obtain vehicle speed signal from car speed sensor 4 and this vehicle speed signal is sent on the vehicle control area net bus.
At the drive pattern control system working process that is used for four-wheel drive car provided by the invention, the propons clutch controller can utilize car body controller to receive speed of a motor vehicle coherent signal from the vehicle control area net, and export the rotation direction at control signal control motor according to the speed of a motor vehicle coherent signal that receives and in conjunction with gear signal, thereby realize control the drive pattern of four-wheel drive car.
Claims (8)
1. drive pattern control system that is used for four-wheel drive car, this system comprises interconnective propons clutch controller (1) and electrical motor (2), wherein, this system also comprises the car body controller (3) that is connected to propons clutch controller (1), described car body controller (3) is from the vehicle control area net bus interface fast signal that returns the vehicle to the garage and knock off, and the size output speed of a motor vehicle height indicator signal according to vehicle speed signal arrives propons clutch controller (1), described propons clutch controller (1) carries out forward or reverse with control motor (2) for electrical motor (2) according to the gear signal and the speed of a motor vehicle height indicator signal output control signal of input, thus the drive pattern of control four-wheel drive car.
2. system according to claim 1, wherein, described speed of a motor vehicle height indicator signal has first value and second value; Described car body controller (3) is used for when the value of the vehicle speed signal that receives is not less than predetermined threshold, and the output value is that the speed of a motor vehicle height indicator signal of first value arrives propons clutch controller (1); When the value of the vehicle speed signal that receives was lower than predetermined threshold, the output value was that the speed of a motor vehicle height indicator signal of second value arrives propons clutch controller (1).
3. system according to claim 2, wherein, described propons clutch controller (1) is used for receiving value when being the speed of a motor vehicle height indicator signal of first value, and the control signal that keeps outputing to electrical motor (2) is constant; Receiving value when being the speed of a motor vehicle height indicator signal of second value, changing the control signal that outputs to electrical motor (2) according to the change of the gear signal that receives.
4. system according to claim 2, wherein, value is that the speed of a motor vehicle height indicator signal of first value is a low level signal, value is that the speed of a motor vehicle height indicator signal of second value is a high level signal.
5. system according to claim 2, wherein, described predetermined threshold is taken from the value between 50km/h～100km/h.
6. system according to claim 5, wherein, described predetermined threshold is 80km/h.
7. system according to claim 1, wherein, this system also comprises interconnective car speed sensor (4) and combination instrument unit (5), described combination instrument unit (5) is connected on the vehicle control area net bus, in order to obtain vehicle speed signal from car speed sensor (4) and this vehicle speed signal is sent on the vehicle control area net bus.
8. according to the described system of arbitrary claim among the claim 1-7, wherein, described propons clutch controller (1) is used for when just changeing, making described four-wheel drive car be in two-wheel drive mode at the described electrical motor of control (2); When the described electrical motor of control (2) counter-rotating, make described four-wheel drive car be in the four wheel drive pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102172377A CN102294999A (en) | 2010-06-23 | 2010-06-23 | Driving mode control system used for four-wheel driven automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102172377A CN102294999A (en) | 2010-06-23 | 2010-06-23 | Driving mode control system used for four-wheel driven automobile |
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| CN102294999A true CN102294999A (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102172377A Pending CN102294999A (en) | 2010-06-23 | 2010-06-23 | Driving mode control system used for four-wheel driven automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139926A (en) * | 2017-06-21 | 2017-09-08 | 北京汽车研究总院有限公司 | A kind of drive pattern control device, method and vehicle |
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| US20030151381A1 (en) * | 2002-01-11 | 2003-08-14 | Nissan Motor Co., Ltd. | Apparatus and method for providing protection to electric traction motor of vehicle |
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Application publication date: 20111228 |