Patent ID: 8448503
Filing Date: 2013-05-28
Classification: G01F

Abstract:
1. A hot-film air-mass meter for measuring an air-mass flow flowing in a main flow direction for use in an intake tract of an internal combustion engine, comprising: a hot-film air-mass meter including a sensor chip having a measuring surface, the air-mass flow flowing essentially parallel over a surface of the sensor chip; and at least one flow separating element situated upstream from the measuring surface with respect to a main flow direction, the at least one flow separating element being designed for separating the air-mass flow from the surface of the sensor chip before it reaches the measuring surface in at least one separation zone; wherein the sensor chip also has a main chip area surrounding the measuring surface, a junction between the measuring surface and the main chip area defining a boundary line, wherein the at least one flow separating element is situated upstream from the boundary line by a maximum of 500 μm with respect to the main flow direction.