NEGATIVE PRESSURE CONTROL DEVICE FOR BRAKE BOOSTER

摘要

PURPOSE: A negative pressure control device for a brake buster is provided to always secure an enough braking power in a direct jet-typed engine. CONSTITUTION: The negative pressure control device for a brake buster comprises:a brake ECU(54) to transmit a demand signal of a negative pressure generation to show a negative pressure generation demand value Preq according to the speed of a car; an engine ECU(12) to decide an object throttle opening SVx for generating an inhaled machine negative pressure PM equaled to the negative pressure generation demand value Preq when the demand signal of the negative generation is received during a bedding burning mode.