Gear shifting reminding method of hybrid electric vehicle

Abstract

The invention relates to the technical field of hybrid electric vehicles, in particular to a gear shifting reminding method of a hybrid electric vehicle. The method comprises the steps that under the condition of meeting a gear shifting activation condition, the running parameters of the hybrid electric vehicle are obtained, and comprise the current vehicle speed, the current engine rotating speed, the current engine output torque and the current motor output torque; the current gear value is calculated according to the proportional relation between the current vehicle speed and the current engine rotating speed; upshift target vehicle speed and down-shift target vehicle speed corresponding to the current gear value are determined through the sum of the current engine output torque and the current motor output torque; if the current vehicle speed is larger than the upshift target vehicle speed, a user is reminded of upshift information; and if the current vehicle speed is smaller than the down-shift target vehicle speed, the user is reminded of down-shift information. By means of the method, optimal fuel economy gear recommendation is carried out, and a driver is helped to achieve the aim of improving the fuel economy of the hybrid electric vehicle.

Description

Technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a shift prompt method for hybrid electric vehicles. Background technique [0002] In today's society, 25% of carbon dioxide emissions come from automobile emissions. Therefore, with the increasing popularity of automobiles, automobile energy saving and emission reduction are of great significance to the energy conservation and emission reduction of the entire society. [0003] As the environmental protection measures of countries around the world become more and more stringent, and more and more hybrid vehicles are used, how to better reduce the fuel consumption of hybrid vehicles will be a major problem. When driving a manual transmission hybrid vehicle, because the driver has less energy-saving technology, and beginners cannot grasp the appropriate shift timing, this will cause the vehicle to fail to work in the optimal fuel consumption range, which means more Fuel c...

AI Technical Summary

Problems solved by technology

When driving a hybrid vehicle with manual transmission, because drivers have less energy-saving techniques and beginners cannot grasp the appropriate timing of shifting, this will cause the vehicle to fail to work in the optimal fuel consumption range, which means more Fuel consumption, more emissions

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