Patent ID: 6805087
Filing Date: 2004-10-19
Classification: F02B,Y02T

Abstract:
An air intake structure of an engine, comprising:a first intake air passage and a second intake air passage formed by branching of an intake air passage disposed downstream from a throttle valve; a plurality of intake ducts branched from a downstream end portion of said first intake air passage and a downstream end portion of said second intake air passage and having a downstream side connected to a plurality of cylinders provided in said engine; a first communication element capable of establishing communication between a neighborhood of said downstream end portion of said first intake air passage and a neighborhood of said downstream end portion of said second intake air passage; and a control element for controlling said first communication element in accordance with an operating state of said engine, said air intake structure further comprising a second communication element which, upstream from said first communication element in a flowing direction of intake air, can bring said first intake air passage and said second intake air passage into communication, and said control element being adapted to control said first communication element and said second communication element in accordance with the operating state of said engine.