INTAKE SYSTEM FOR ENGINE

PROBLEM TO BE SOLVED: To provide an engine intake system capable of learning the fully closed state of a throttle valve while the vehicle is running.SOLUTION: An engine intake system comprises: a chamber 21 communicating with the intake side of an engine body 101; a plurality of intake pipes 11 communicating with the chamber 21; a plurality of throttle valves 52 individually arranged in the intake pipes 11 for opening and closing pipe conduits 12 in the intake pipes 11; and control means 55 for performing a fully closed learning control, in which a portion of the throttle valves 52 is fully closed, and in which the remaining throttle valves 52 are opened while learning the fully closed state.SELECTED DRAWING: Figure 1 【課題】車両走行中にスロットルバルブの全閉状態の学習を行うことができるエンジンの吸気装置を提供する。【解決手段】エンジン本体１０１の吸気側に連通するチャンバ２１と、チャンバ２１に連通する複数の吸気管１１と、吸気管１１のそれぞれに配置され、吸気管１１内の管路１２の開閉を行う複数のスロットルバルブ５２と、複数のスロットルバルブ５２の一部を全閉にして、全閉状態を学習しつつ、残りのスロットルバルブ５２を開く全閉学習制御を行う制御手段５５とをエンジンの吸気装置に備える。【選択図】図１