HOT WIRE AIRFLOW METER INTEGRATED WITH THROTTLE BODY

摘要

PURPOSE:To eliminate a difference of an output flow rate of an airflow meter between those at the times of full closing and full opening of an idle speed control valve and to reduce a deflection of the output flow rate. CONSTITUTION:An outlet 8 of a first bypass passage 4 communicates with an inlet 12 of a second bypass passage 11 with a connector 15 formed of an L-shaped tube. A downstream end of the connector 15 is mounted at a throttle body 1, and an upstream end is approached to a downstream of the outlet 8 at an interval G. When opening degree of a throttle valve 3 is small and an idle speed control valve 13 is opened, an air flow flowing through the passage 11 increases an air flow of the passage 4.