Driving control method for a hybrid vehicle

Abstract

Disclosed herein is a driving control method for a hybrid vehicle. The driving control method has SOC ranges including a high SOC (state of charge) range, a normal SOC range, and a low SOC range, and target engine torques corresponding to the respective SOC ranges. The driving control method includes: calculating a target engine torque according to a current SOC; decreasing the target engine torque when the current SOC is higher than a predetermined range; and increasing the target engine torque when the current SOC is lower than a predetermined range.

Description

technical field [0001] The present invention relates to a driving control method for a hybrid vehicle, which implements variable SOC control of the hybrid vehicle using the vehicle speed and the gradient of the driving road, thereby making the energy utilization performance of the vehicle more active, intelligent and efficient, thereby further enhancing the vehicle fuel efficiency. Background technique [0002] In a parallel hybrid vehicle, the engine clutch is arranged between the engine and the drive motor. Therefore, it is easy to control the transmission of power from the engine to the wheels. In particular, parallel hybrids are characterized in that when the vehicle decelerates, it enters a regenerative braking mode in such a way that the engine is stopped and the engine clutch is disengaged so that braking energy is directly absorbed by the electric motor. [0003] The term SOC (state of charge) refers to the state of charge of a high voltage battery, in other words,...

AI Technical Summary

Problems solved by technology

[0004] However, if the engine alternates between starting and stopping too frequently, its fuel efficiency decreases and the load on the overall system increases

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