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    • 64. 发明公开
    • Variable intake air apparatus
    • Lufteinlassvorrichtung mit variabler Geometrie
    • EP0790394A3
    • 1998-03-18
    • EP97102420.3
    • 1997-02-14
    • TOYOTA JIDOSHA KABUSHIKI KAISHA
    • Morota, kenjiro
    • F02B27/02
    • F02B27/0215F02B27/0236F02B27/0252F02B27/0294Y02T10/146
    • A variable intake apparatus includes an intake manifold. The manifold has a surge tank (23) and a plurality of branch pipes (31, 32, 33, 34) extending therefrom. The air in the surge tank is drawn into the combustion chambers (20) of an engine (12) via the branch pipes. The lengths of the branch pipes are different. A movable pipe (41, 42, 43, 44) is slidably located in each branch pipe. The movable pipes slides within the branch pipes for changing the effective passage length of the intake passages. The passage lengths of the movable pipes are determined such that the effective intake passage lengths are equalized. A motor (45) actuates the movable pipes to slide within the branch pipes based on the engine speed. The movable pipes integrally move with respect to the branch pipes while keeping the passage lengths of the intake passages equalized.
    • 可变进气装置包括进气歧管。 歧管具有缓冲罐(23)和从其延伸的多个分支管(31,32,33,34)。 缓冲罐中的空气经由分支管被吸入发动机(12)的燃烧室(20)。 支管的长度不同。 可移动管(41,42,43,44)可滑动地位于每个分支管中。 可动管在分支管内滑动,以改变进气通道的有效通道长度。 确定可动管的通道长度,使得有效进气通道长度相等。 基于发动机转速,电动机(45)致动可动管,在分支管内滑动。 活动管相对于支管整体地移动,同时保持进气通道的通道长度相等。