Driving control method for hybrid vehicle

Abstract

A driving control method for a hybrid vehicle has state of charge (SOC) ranges including a high SOC range, an intermediate SOC range and a low SOC range, and a plurality of power distribution strategies corresponding to the respective SOC ranges. The driving control method controls the hybrid vehicle using a power distribution strategy corresponding to an SOC range to which a current SOC of the hybrid vehicle belongs. When a speed of the hybrid vehicle is high or low and is outside a predetermined range, boundary values of the intermediate SOC range and the low SOC range among the SOC ranges are increased.

Description

[0001] Cross References to Related Applications [0002] This application claims priority based on 35 U.S.C. §119(a) from Korean Patent Application No. 10-2013-0075167 filed on June 28, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to a driving control method for a hybrid vehicle that implements variable state-of-charge (SOC) control of the hybrid vehicle using vehicle speed and driving road gradient, thereby making the energy utilization performance of the vehicle more active, smarter, and more efficient , thereby further improving the fuel efficiency of the vehicle. Background technique [0004] In a parallel hybrid vehicle, an engine clutch is arranged between the engine and the drive motor. Therefore, it is easy to transmit power from the engine to the wheels. Specifically, when the parallel hybrid vehicle decelerates, it enters the regenerative braking mode with the engine stopped, and...

AI Technical Summary

Problems solved by technology

[0006] However, if the engine alternates between starting and stopping excessively and frequently, its fuel efficiency decreases and the load applied to the overall system increases

Images