Patent ID: 7934419
Filing Date: 2011-05-03
Classification: G01F

Abstract:
1. An intake air mass flow measurement device, comprising: a mass air flow measurement device for measuring an intake air mass flow in an intake air tube; and a pressure sensing device for sensing pressure in the intake air tube, the pressure sensing device being integrated with the mass air flow measurement device, wherein an aperture plane opened to the inside of the intake air tube for detection of the pressure takes in pressure by using a gap generated between an intake air tube constituting member and a measurement part of said mass air flow measurement device, wherein an opening position of a pressure intake port formed in an intake air mass flow measurement device body is positioned at an outer side of an inner wall of an intake air tube passage formed by an intake air tube passage constituting member, as viewed from a diametric direction of the intake air tube, and wherein the pressure intake port formed in the intake air mass flow measurement device body is constructed such that an intake passage thereof formed by a tube passage is preliminarily opened to a recess formed in an outer wall of the intake air mass flow measurement device body, and that pressure is taken in via the recess.