| 摘要 |
PURPOSE:To uniform air-to-fuel ratio seen over the whole cylinders by specifying the take-in timing of air-to-fuel information for each cylinder given by air- to-fuel ratio sensors on the basis of the crank angle information and making correction of the fuel injection amount for individual cylinders in accordance with the air-to-fuel ratio information. CONSTITUTION:In an air-to-fuel ratio control device, in which the amounts of fuel injection for individual cylinders are calculated by a control unit on the basis of output signals from a potentiometer 26 etc. to sense the amount of air taken in and a crank position sensor 19 to sense the angular position of rotating crank shaft driven by the engine 1, further an air-to-fuel ratio sensor 18 is mounted in the exhaust line 16. Output signal from this air-to-fuel ratio sensor 18 is put in a control unit 27, and the take-in timings of air-to-fuel ratio information for individual cylinders by this sensor 18 are specified on the basis of the abovementioned crank angle information. The amounts of fuel injection for individual cylinders are corrected on the basis of the air-to-fuel ratio information thus taken in one after another. |
