Gear shifting method and system of vehicle, and vehicle

Abstract

The invention provides a gear shifting method and system of a vehicle, and the vehicle. The vehicle comprises an engine and a BSG motor. The gear shifting method of the vehicle comprises the followingsteps: a basic gear shifting point corresponding to the current accelerator pedal opening degree and a BSG motor full-load charging gear shifting point are obtained, and a first vehicle speed corresponding to the BSG motor full-load charging gear shifting point is larger than a second vehicle speed corresponding to the basic gear shifting point; a charging load coefficient corresponding to the current charging torque of the BSG motor is obtained; a final gear shifting point is determined according to the charging load coefficient, the basic gear shifting point and the BSG motor full-load charging gear shifting point, wherein a third vehicle speed corresponding to the final gear shifting point is located between the first vehicle speed and the second vehicle speed; and gear shifting is performed according to the final gear shifting point. According to the gear shifting method of the vehicle, the gear shifting moment can be correspondingly adjusted according to different loads under thecondition that extra loads are added to the engine, so the acceleration performance of the vehicle can be effectively improved, roar of the engine can be effectively reduced, and the driving experience can be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle gear shifting method, system and vehicle. Background technique [0002] Compared with fuel vehicles, hybrid vehicles have the advantages of energy saving and emission reduction, and usually include an engine and a BSG (BeltDriven Starter Generator) motor. Because the BSG motor sometimes needs to be driven by the engine to charge the load (battery), that is : Equivalent to the engine sometimes adding extra load. At this time, when shifting gears, due to the additional load added by the engine, compared with when shifting gears without additional loads, the acceleration of the vehicle will be weakened. At the same time, it may be accompanied by a loud roar of the engine, which will affect the driving experience. Contents of the invention [0003] In view of this, the present invention aims to propose a gear shifting method for a vehicle. The method can adjust the ...

AI Technical Summary

Problems solved by technology

At this time, when shifting gears, due to the additional load added to the engine, compared with when shifting gears without additional loads, the acceleration of the vehicle will be weakened, and it may be accompanied by a loud roar of the engine, which will affect the driving experience.

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