Torque control method and device for hybrid power vehicle, and storage medium

Abstract

The invention relates to a torque control method for a hybrid power vehicle. The hybrid power vehicle comprises an engine, a double-clutch gearbox and a motor. The dual-clutch gearbox comprises a first clutch and a second clutch. The method comprises the following steps: whether a current vehicle outputs driving torque through the first clutch to drive the vehicle or not and whether the engine outputs charging torque through the second clutch to drive the motor or not are judged; if so, whether the current vehicle enters an idling sliding state or not and whether the gear of the current vehicle is located at the D gear or the R gear or not are judged; if so, the first clutch is controlled to be converted into a sliding friction state from a joint state; whether the speed of the current vehicle is reduced to zero or not is monitored; and if so, the first clutch is controlled to be converted into the opening state from the sliding friction state. The dragging torque of the clutches can be reduced, so that the oil consumption of the vehicle is reduced.

Description

technical field [0001] The present invention relates to the technical field of hybrid electric vehicles, in particular to a torque control method, device and storage medium of a hybrid electric vehicle. Background technique [0002] With the rapid development of science and technology, automobiles have become an indispensable means of transportation in people's lives, and with the increasingly stringent environmental protection measures around the world, hybrid vehicles have become an important part of automobile research and development due to their energy-saving and low-emission characteristics. A key point, and has begun commercialization. The so-called hybrid vehicle generally refers to a gasoline-electric hybrid vehicle, that is, a vehicle that uses a traditional internal combustion engine and an electric motor as a power source. By using electric motors on hybrid electric vehicles, the power system can be flexibly adjusted according to the actual operating conditions ...

AI Technical Summary

Problems solved by technology

[0003] At present, the common structure of dual-clutch gearboxes for hybrid vehicles on the market is the P2 structure. This type of gearbox can switch between pure electric and hybrid power modes through a clutch switch, which is different from the dual-clutch gearboxes with P2 structure currently on the market. , the dual-clutch gearbox of the hybrid electric vehicle of this application adopts such as figure 1 The P2.5 architecture shown, and the inventor of the present application found in the research process that for the P2.5 dual-clutch gearbox, if the engine is started to charge the battery when the driving gear is idling in the D gear , since the first clutch is in a slippery state, it will increase the output torque of the engine while maintaining charging, thereby increasing fuel consumption

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