Coordinated control method for working mode switching and shifting of hybrid electric vehicles based on dct
A hybrid electric vehicle, working mode technology, applied in hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve problems affecting vehicle dynamics and economy, delay priority, etc., to solve mode switching and shifting conflicts Problems, reduction of repetitive actions, easy effect of switching control process
Active Publication Date: 2017-07-28
CHONGQING UNIV
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Problems solved by technology
[0004] The method of setting priority only delays the operation with lower priority, and does not fundamentally solve the problem of conflict between mode switching and gear shifting, and the actuators of the whole vehicle continuously perform the operation actions of mode switching and gear shifting, which seriously Affected vehicle dynamics and economy
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[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0028] A DCT-based hybrid electric vehicle working mode switching and shift coordination control method provided by the present invention is based on figure 1 Hybrid drive system shown. Such as figure 1 As shown, the hybrid drive system includes components such as engine, main clutch, ISG motor, DCT and final reducer. Based on this form of hybrid drive system structure, pure electric mode, engine independent drive mode, hybrid drive mode and driving charging mode can be realized.
[0029] The DCT-based single-motor hybrid electric vehicle working mode switching and gear shifting coordination control method provided by the present invention is mainly applied when the working mode switching command of the vehicle controller conflicts with the gear shifting command. Coordinated control includes switching between pure electric mode, engine i...
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The invention relates to a hybrid power vehicle working mode switching and gear shifting coordinative control method based on DCT, and belongs to the technical field of hybrid power vehicle control. By means of the method, the working mode switching and gear shifting coordinative control process starts to be executed when it is detected that a vehicle is in a mode switching instruction and gear shifting instruction overlapping state; two clutches of the DCT enter a gear shifting operation step, and the whole vehicle working mode switching operation is conducted at the same time when the clutches of the DCT rub each other in a sliding mode. The clutches of the DCT are in a sliding rub state in the mode switching process, and therefore no impact can be caused to the whole vehicle in the mode switching process. By means of the method, the conflict problem of mode switching and gear shifting of the hybrid power vehicle based on the DCT is solved, the time for mode switching and gear shifting of the hybrid power vehicle is shortened to a large extent, and the repeated actions in the mode switching and gear shifting process are reduced.
Description
technical field [0001] The invention belongs to the technical field of hybrid electric vehicle control, and relates to a DCT-based hybrid electric vehicle working mode switching and shift coordination control method. Background technique [0002] In recent years, hybrid electric vehicles have achieved rapid development due to their high efficiency and fuel economy. However, the research on ride comfort of hybrid electric vehicles needs to be strengthened. DCT has the characteristics of simple structure, high transmission efficiency and no power interruption when shifting gears. Its better power performance and economic performance complement the purpose of energy saving and emission reduction of hybrid electric vehicles. How to give full play to the performance advantages of the hybrid system and DCT remains to be further studied. [0003] The research on ride comfort of hybrid electric vehicles based on DCT mainly includes two contents: mode switching ride comfort and gear...
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IPC IPC(8): B60W20/20B60W20/30
CPCB60W10/02B60W10/06B60W10/08B60W10/113B60W20/30B60W20/40B60W2510/1005B60W2510/244B60W2520/10B60W2710/027B60W2710/0644B60W2710/0666B60W2710/081B60W2710/083
Inventor 刘永刚陈亮秦大同
Owner CHONGQING UNIV