Variable intake device

Details Variable intake device Variable intake device

2006-04-19

2010-06-01

Kamen, Noah (Department: 3741)

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

C123S184550

Reexamination Certificate

active

07726272

ABSTRACT:
A variable intake device includes an intake pipe through which air flows towards a combustion chamber of an engine, defining a first streamline at an intermediate portion of the pipe, a short-circuit pipe connected at the intermediate portion, defining a second streamline crossing the first streamline at the connected other end, and a valve arranged at the short-circuit pipe adjacent to the intermediate portion. The valve includes a valve body regulating air flow. When the valve allows air flow merging into the intake pipe from the short-circuit pipe, the valve body is positioned to extend in a direction between the extending direction of the first streamline indicated by arrow and the extending direction of the second streamline indicated by arrow. By such a configuration, a variable intake device having pressure loss at the intake path sufficiently reduced can be provided.

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Japan Institute of Invention and Innovation Technical Report No. 2004-501552, Mar. 3, 2004, Toyota Jidosha Kabushiki Kaisha.

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