Starting and gear shifting coordination control method of starting engine of P2 configuration hybrid power vehicle

Abstract

The invention provides a starting and gear shifting coordination control method of a starting engine of a P2 configuration hybrid power vehicle. The method comprises a starting-gear shifting coordination process for the gear shifting in a starting process of the starting engine and a gear shifting-starting coordination process for starting of the starting engine in a gear shifting process, the starting process and the gear shifting process of the starting engine can be carried out in parallel under any working condition, and the situation that the mode switching or gear shifting time is too large due to the fact that the two processes are mutually independent is avoided; and in addition, by coordinating the starting process and the gear shifting process, on the basis of shortening the modeswitching and gear shifting time, mutual interference between the starting process and the gear shifting process is avoided, and the power response and the gear shifting smoothness of the whole vehicle are improved.

Description

technical field [0001] The invention relates to a P2 configuration hybrid vehicle starter start-up and gear shift coordinated control method, which belongs to the field of dual-clutch automatic transmission (DCT) control. Background technique [0002] In order to meet the country's fuel consumption limit policy, hybrid power has been regarded as one of the effective ways in recent years. It is valued and optimistic because of its obvious energy-saving effect and better meeting the current market and consumer needs. The P2 hybrid configuration is to add a motor and a separation clutch between the engine and the transmission. The engine and transmission do not require major changes. It has the characteristics of less technical investment, obvious fuel-saving effects, and good power and driving performance. It has gradually become the market. Mainstream technical solutions. Since the mode switching and shifting process are two independent processes, and are controlled by the v...

AI Technical Summary

Problems solved by technology

However, first of all, this method integrates the shift schedule and the mode switching schedule in the same MAP, and the shift schedule and the mode switching schedule will inevitably be coupled and interfere with each other, and the optimization of power and economy cannot be achieved.

Secondly, this method will actively reduce the driving torque of the vehicle during the mode switching process, which will inevitably affect the vehicle dynamic performance during the mode switching and gear shifting process of the vehicle.

Thirdly, in the process of power upshifting and mode switching, the process of mode switching and shifting clutch exchange completely coincides with this method, which will inevitably affect the driving comfort of the whole vehicle

Finally, the power motor of this method is in the form of an ISG motor, the engine has no special starter, the mechanical structure is different, and the starting method is different

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