STRUCTURE FOR JOINING VALVE CASING TO MANIFOLD BODY OF INTAKE MANIFOLD

摘要

A valve casing of a flow regulating valve is welded to an end of a downstream section of a manifold body. Two passages are formed in the valve casing of the flow regulating valve. The valve casing accommodates a valve plate for switching at least one of the passages selectively between an open state and a closed state. A joint portion between the manifold body and the valve casing has height difference such that the portion in the vicinity of the passage corresponding to the valve plate is located at a position higher than the portion in the vicinity of the other one of the passages.

主权项

1. An intake manifold having a curved portion formed in a downstream section of a manifold body and a joining portion arranged in the curved portion, wherein a valve casing of a flow regulating valve is joined to the joint portion, the intake manifold comprising:
an outer end and an inner end provided in the curved portion of the manifold body, wherein the outer end is arranged at an outer tip end of the curved portion, and the inner end is arranged at an inner tip end of the curved portion; and a height varying portion forming the joint portion such that the outer end of the curved portion is located at a position higher than the inner end of the curved portion.