Intake apparatus for internal combustion engine

摘要

An intake apparatus for an internal combustion engine includes a plurality of branch pipes connected at downstream ends thereof to an engine main body, an intake chamber to which upstream ends of the branch pipes are connected, and a common intake air introducing part connected to the center of the intake chamber in a cylinder arrangement direction. The intake chamber includes a projecting part projecting toward the engine main body relative to the common intake air introducing part. An EGR introducing passage is connected to the center of the projecting part in the cylinder arrangement direction. A downstream end of the EGR introducing passage is directed toward a wall of the projecting part on the common intake air introducing part side.

主权项

1. An intake apparatus for an internal combustion engine, comprising:
a plurality of branch pipes connected at downstream ends thereof to an engine main body; an intake chamber to which upstream ends of the branch pipes are connected; and a common intake air introducing part connected to a substantial center of the intake chamber in a cylinder arrangement direction, wherein the intake chamber includes a projecting part projecting toward the engine main body relative to the common intake air introducing part, the projecting part projecting in a direction orthogonal to a connection direction of the common intake air introducing part to the intake chamber and orthogonal to the cylinder arrangement direction; wherein an EGR introducing pipe is connected to a substantial center of the projecting part in the cylinder arrangement direction, the EGR introducing pipe constituting an EGR introducing passage; wherein an extension wall is disposed in the intake chamber so as to extend the EGR introducing passage from a wall of the projecting part to inside of the intake chamber, and wherein a downstream end of the EGR introducing passage is directed toward the wall of the projecting part on a common intake air introducing part side by the extension wall.