Demand torque calculation method, demand torque calculation device and vehicle

Abstract

The invention provides a required torque calculation method, a required torque calculation device and an automobile, which are used for solving the problem of low calculation precision of the requiredtorque of a whole automobile in the prior art. Specifically, the method comprises the steps that firstly, the current accelerator pedal required torque, brake pedal required torque and creeping torque of an automobile are calculated; then, a predetermined brake limiting coefficient and the ESP required torque of an electronic stabilization system connected with the controller are obtained, wherein the corresponding brake limiting coefficient obtained when the brake pedal is not stepped on is different from the corresponding brake limiting coefficient obtained when the brake pedal is stepped on; and finally, according to the current working condition, the accelerator pedal required torque, the brake pedal required torque, the creeping torque, the ESP required torque and the brake limitingcoefficient of the automobile, the whole automobile required torque of the automobile is obtained through calculation.

Description

technical field [0001] The present application relates to the technical field of hybrid electric vehicles, and in particular, to a required torque calculation method, a required torque calculation device, and an automobile. Background technique [0002] With the deepening of the energy crisis and the continuous improvement of environmental protection concepts, new energy vehicles have developed rapidly. However, because pure electric vehicles are limited by the problem of battery capacity and cannot achieve a long cruising range, hybrid vehicles with two drive systems, an engine (such as an internal combustion engine) and an electric motor, have developed by leaps and bounds. [0003] The inventor's research found that in a hybrid vehicle that includes two drive systems, due to the large number of controlled components, the existing technology for calculating the vehicle's required torque has many shortcomings. For example, the calculated vehicle's required torque is accurat...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of this application is to provide a required torque calculation method, a required torque calculation device and an automobile, so as to improve the problem of low accuracy in the calculation of the required torque of the whole vehicle in the prior art

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