AIR AMOUNT MEASURING DEVICE OF INTERNAL COMBUSTION ENGINE AND METHOD OF MEASURING AIR AMOUNT

摘要

PROBLEM TO BE SOLVED: To solve the problems that are caused by an error occurring because an average air amount detected is influenced by the size and frequency of intake pulsation and the error may cause a response delay as a frequency may go higher and the output of a higher frequency sensor can't be correctly traced in the incorporation of a predetermined sampling timing if a heat ray type air quantity sensor output is incorporated at a predetermined sampling timing and is converted into an air quantity.;SOLUTION: The size and pulsation frequency of a pulsation amplitude ratio are found from the intake pulsation of an internal combustion engine, a correction amount that corrects a frequency response of the heat ray type air amount sensor is found from the pulsation amplitude ratio and pulsation frequency, a correction amount that corrects a sampling error is found, an air amount detected from a corrected amount in response to the intake pulsation is calculated by operating correction thereby finding a final air amount.;COPYRIGHT: (C)2013,JPO&INPIT