| 摘要 |
PURPOSE:To always obtain an optimal gas mixture enen if the composition of a mixed fuel of gasolne and alcohol is changed, by feedback control of an injection amount from fuel injection valve and return fuel amount from a fuel pressure regulator. CONSTITUTION:A mixed fuel 13 in a fuel tank is fed to fuel injector 15 installed in an air intake line of an internal combustion engine 16, via a pump 12 and fuel pressure regulator 14. Signal from an air flow sensor 17 in the air intake line and that from O2 sensor 20 in an exhaust line are input to a computor 18 so that opening of said injector 15 and adjusted pressure value of fuel pressure regulator 14 are changed according to an output signal from said computor 18. Accordingly, even if the mixing ratio of fuel is changed, an appropriate air fuel ratio is always obtained. |
