| 摘要 |
<p>PURPOSE:To improve the responsiveness for measuring a flow rate by executing the operation by using a correction ratio value which is varied in accordance with a flow rate variation quantity. 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. By using a correction ratio value DELTAC which is varied in accordance with a variation of this arithmetic value CQmax and a large/small relation to the arithmetic value CQmax, and also, in accordance with a flow rate variation quantity DELTAQ, a second arithmetic value CQ is formed. Subsequently, by calculating a correction coefficient C by these arithmetic values, and executing the correction by multiplying the output of the sensor 1 by the coefficient C, a thermal influence by a holding member for supporting a temperature dependency resistance is obviated, and a response characteristic at the time of detecting an air flow rate is improved.</p> |
