Patent ID: 8205590
Filing Date: 2012-06-26
Classification: F02M,Y02T

Abstract:
1. An intake manifold, for a multiple-cylinder internal combustion engine, having a collective part defining an intake gas distribution chamber having an intake gas inlet at one end of a cylinder arranging direction, and a branch intake part having a plurality of branch intake passages arranged in the cylinder arranging direction respectively for carrying an intake gas to combustion chambers; wherein the collective part is built by joining together first and second sections respectively defining first and second spaces forming the intake gas distribution chamber, the branch intake part being provided on the first section, at least the first section is integrally provided with a corner part at another end of the cylinder arranging direction, the second section is provided with a guide wall extending in the first and the second section so as to cover an inside surface of the corner part, and the guide wall has a guide surface for guiding the intake gas to the branch intake part, and wherein the guide wall lies in an imaginary extension passage extending from one branch intake passage, closest to the corner part, included in the branch intake passages, the guide wall being positioned on an imaginary extension passage section, which is a part of the imaginary extension passage and which extends from the one branch intake passage through a distance equal to a length of the branch intake passages.