Intake air flow measuring apparatus for internal combustion engine

摘要

An intake air flow measuring apparatus for internal combustion engine. This apparatus has a thermal type air flow meter (1), a unit (3) for correcting the response delay of the thermal type air flow meter, and a unit (2) for detecting the direction of the flow of intake air so that an amount of reverse air flow is detected by the response delay correcting unit and air flow direction unit, and that a true amount of sucked air flow is calculated from the output of the thermal type air flow meter and the amount of reverse air flow. <MATH>