| 摘要 |
<p>PURPOSE:To improve the responsiveness for measuring a flow rate by using a first and a second arithmetic values which are varied in accordance with a flow rate variation quantity, and executing an arithmetic processing by addition and subtraction. CONSTITUTION:A signal processor 9 executes a correcting operation by various sensors, mainly on an air flow rate signal from an air flow rate sensor 1 contained in a suction passage 2, and an engine revolution speed signal from a crank angle sensor 8, and controls injection pulse width of an injector 7. That is, the processor 9 allows an output of the sensor 1 to store in advance a first arithmetic value CQmax generated in a balanced state of this output, and allows it to form a second arithmetic value CQ which is varied in accordance with a variation of the arithmetic value CQmax and a large/small relation to the arithmetic value CQmax. Subsequently, by correcting a difference of these arithmetic values by adding or subtracting to or from the output of the sensor 1, a thermal influence by a holding member for supporting a temperature dependency resistance is obviated, and a response characteristics at the time of detecting an air flow rate is improved.</p> |
