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Intelligent four-wheel drive control method and system and vehicle

A control method and vehicle technology, applied in the field of vehicles, can solve problems such as poor reliability, failure to output torque correction, friction plate temperature monitoring lag, etc.

Active Publication Date: 2020-10-20
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose an intelligent four-wheel drive control method, system and vehicle to solve the problems of lagging friction plate temperature monitoring, poor reliability, and inability to correct the output torque

Method used

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  • Intelligent four-wheel drive control method and system and vehicle
  • Intelligent four-wheel drive control method and system and vehicle
  • Intelligent four-wheel drive control method and system and vehicle

Examples

Experimental program
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Embodiment 1

[0068] refer to figure 1 , shows a flow chart of steps of an intelligent four-wheel drive control method according to an embodiment of the present invention.

[0069] An intelligent four-wheel drive control method provided in an embodiment of the present invention is mainly applied to vehicles, and may specifically include:

[0070] Step 101: Obtain the vehicle condition information of the vehicle, the vehicle condition information including the front wheel speed and the rear wheel speed of the vehicle.

[0071] The intelligent four-wheel drive control method provided by the embodiment of the present invention is mainly applied in the intelligent four-wheel drive system of the vehicle. The intelligent four-wheel drive system includes an electronic control unit and an electronically controlled torque manager. The electronically controlled torque manager has a set of friction clutches. The torque control manager can control the magnitude of the torque transmitted by the frictio...

Embodiment 2

[0085] refer to figure 2 , shows a flow chart of steps of another intelligent four-wheel drive control method according to an embodiment of the present invention.

[0086] Another intelligent four-wheel drive control method provided by an embodiment of the present invention is applied to a vehicle, and may specifically include:

[0087] Step 201: Obtain the vehicle condition information of the vehicle, the vehicle condition information including the front wheel speed and the rear wheel speed of the vehicle.

[0088] For a specific implementation process, refer to step 101 in Embodiment 1.

[0089] Step 202: Calculate an output torque calculation value according to the vehicle condition information.

[0090] For a specific implementation process, refer to step 102 in Embodiment 1.

[0091] Step 203: Calculate the front and rear axle speed difference according to the front wheel speed and the rear wheel speed.

[0092] The speed difference between the front and rear axles i...

Embodiment 3

[0122] refer to image 3 , shows a structural block diagram of an intelligent four-wheel drive control system according to an embodiment of the present invention. Such as image 3 As shown, the intelligent four-wheel drive control system provided by the embodiment of the present invention is mainly used for vehicles, and the intelligent four-wheel drive control system includes: an acquisition module 301, a torque calculation module 302, a temperature calculation module 303 and a torque control module 304; wherein, the acquisition The module 301 is connected to the torque calculation module 302 and the temperature calculation module 303 respectively, and the torque calculation module 302 is connected to the temperature calculation module 303 and the torque control module 304 respectively.

[0123] refer to Figure 4 , shows a schematic diagram of a control process of an intelligent four-wheel drive control system according to an embodiment of the present invention. Such as ...

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Abstract

The invention provides an intelligent four-wheel drive control method and system and a vehicle. The intelligent four-wheel drive control method comprises the following steps: acquiring vehicle condition information of a vehicle; calculating an output torque calculation value of the vehicle; with combination of front wheel speed, rear wheel speed and output torque calculation values, calculating the temperature of the friction plate of the vehicle; and finally, correcting the output torque calculation value according to the temperature of the friction plate to obtain an actual output torque, and controlling a friction clutch of the vehicle to output the actual output torque. According to the intelligent four-wheel drive control method, the temperature of the friction plate is directly obtained according to the real-time vehicle condition information, and the accuracy is higher; meanwhile, the output torque calculation value is corrected through the temperature of the friction plate, thecontrol accuracy of the output torque is improved, then the controllability and the escape capacity of the whole vehicle are improved, and the probability that the friction plate is ablated and damaged is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an intelligent four-wheel drive control method, system and vehicle. Background technique [0002] The vehicle's four-wheel drive system can distribute the engine power of the vehicle to the required wheels according to the road conditions and vehicle conditions, maximize the adhesion of the four wheels, and improve the passability, handling and acceleration of the vehicle. Among them, the intelligent four-wheel drive system is a system that can automatically adjust the four-wheel drive mode, while satisfying the four-wheel drive performance, taking into account the excellent driving experience. [0003] In the existing intelligent four-wheel drive control system, it is usually necessary to monitor the temperature of the friction plate clutch to prevent ablation and sintering of the friction plate, or early failure of the four-wheel drive system. The existing temperature monitor...

Claims

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Application Information

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IPC IPC(8): B60W10/02B60W40/105F16D13/58
CPCB60W10/02B60W40/105F16D13/58B60W2510/0291B60W2520/28B60W2710/027B60W10/119B60K17/34B60W2520/263B60W2510/0657B60W2510/1005B60W2710/029B60W2520/10B60W2555/20B60W30/186B60W2050/0011B60T17/22B60T2270/302
Inventor 邓飞李红超钮威龙尹云
Owner GREAT WALL MOTOR CO LTD
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