Patent ID: 6170327
Filing Date: 2001-01-09
Classification: G01F

Abstract:
An air mass meter for an intake port of an internal combustion engine, comprising:a temperature sensor disposed in an intake port of an internal combustion engine for measuring a temperature of air flowing in the intake port;a heating element disposed downstream of said temperature sensor in the intake port, said heating element being formed on a stripe shaped substrate having an onflow surface and a heating resistor applied to one side of the substrate;a disturbance body disposed in the intake port downstream of said heating element relative to a flow of air in the intake port, said disturbance body is shaped such as to cause a certain desired damming of the airflow;said heating element and said disturbance body being configured and placed at a relative distance from one another such that said a damming of the airflow due to said disturbance body which has the effect that there is a laminar airflow over said heating element that minimizes the effect of deposits of dirt on said onflow surface of said substrate.