CONTROL METHOD FOR BRAKE VACCUM PRESSURE OF HEV

摘要

A method for controlling negative pressure of brake for hybrid vehicle is provided to form boost negative pressure without vacuum pump and reduce production price and weight. A method for controlling negative pressure of brake for hybrid vehicle comprises: a step of determining whether the boost negative pressure is under a first standard value; a step of determining whether an engine is normal if the boost negative pressure is under a first standard value; a step of rotating the engine with a motor to form the negative pressure; and a step of finishing the control if the boost negative pressure is over the first standard value.