Vehicle speed control method and device, equipment and computer readable medium

Abstract

The invention provides a vehicle speed control method and device, equipment and a computer readable medium. The method comprises the following steps: S1, obtaining a maximum vehicle speed value, a current vehicle speed, a current gear signal and a current accelerator pedal opening signal when a vehicle is in a state of limiting the maximum vehicle speed; S2, obtaining a target torque limit value meeting the highest vehicle speed through calculation according to the highest vehicle speed value, the current vehicle speed and the current gear signal, and obtaining a torque value required by a driver through calculation according to the current vehicle speed and the current accelerator pedal opening degree signal; and S3, obtaining a final torque output value according to the target torque limit value and the driver demand torque value, and controlling to output the final torque output value. Compared with the prior art, the vehicle speed can be stabilized more quickly, obvious fluctuationof the vehicle speed is avoided when the vehicle has an over-temperature risk, and more excellent driving feeling can be brought to customers on the premise of ensuring safety.

Description

technical field [0001] The present invention relates to the technical field of actively limiting the maximum vehicle speed of a vehicle, in particular to a vehicle speed control method, device, equipment and computer readable medium. Background technique [0002] When the vehicle power system is overheated, it can prevent further temperature rise by limiting the maximum speed. Since traditional fuel vehicles have only one power source, the engine, there is a risk of overheating when the engine is running at high load for a long time. Similarly, when a hybrid electric vehicle or an electric vehicle is running at high speed for a long time and under heavy load conditions, the high-voltage battery has a greater risk of overheating. The existing technology generally limits the maximum speed of the vehicle to a preset safe value when the vehicle engine or high-voltage battery is found to be overheating, so as to limit the output torque of the engine or electric motor, prevent th...

AI Technical Summary

Problems solved by technology

In the existing technology, when there is a risk of overheating of the vehicle engine or the high-voltage battery pack, the control process is single, and the driver cannot flexibly control the acceleration and deceleration of the vehicle within the safe speed, which seriously affects the driving experience, and may exist within the safe speed. Emergency refueling occurs due to misoperation, resulting in further overheating of the engine or high-voltage battery

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