| 摘要 |
PURPOSE:To enable an air excessive rate to be set to a low value even if an air amount is varied by a temperature difference, by a method wherein, through measurement of an air amount and temperature, the result is converted into a weight volume ratio under a specified temperature condition. CONSTITUTION:An air amount, proportioned to a fuel amount, is set by an air- fuel ratio setting function generator 7, a control motor 17 for an air flow rate is driven through the working of a factor device 12, and control is made by regulating a damper or a vane 18. Further, the air amount is inputted to a temperature compensator 14 together with a signal from a flow meter 20 and a temperature signal, measured by a thermometer 19, to convert them under a specified temperature condition, a deviation between the result and a set flow rate is computed by an adding and subtracting device 8, computation is made by a proportional computer 9 and an integrating computer 10, addition and subtraction are made by an adding and subtracting device 11, the results are added as an air amount correcting setting signal to an adding and subtracting device 13, and in response to the signal, the vane 18 is corrected to open and close it. This enables the air excessive ratio of the air-fuel function generator to be reduced to a low value. |
