| 摘要 |
PURPOSE:To improve fuel efficiency, and to control the correction of an air-fuel ratio by an O2 sensor by providing a control section correcting the fundamental quantity of injection by difference between outputs from pressure sensors fitted before and behind an air filter. CONSTITUTION:The pressure sensor 16 is positioned in front of the air filter 3 and the pressure sensor 17 between the air filter 3 and a throttle valve 6. The state of operation of the engine 1 is obtained by a throttle-valve opening sensor 6a and a revolution-number detecting sensor 14, and the fundamental quantity of fuel injected is determined in the control section 18. A correction factor to the fundamental quantity of injection is acquired from the output difference of the pressure sensors 16, 17, and outputted to an injector 8 from the control section 18. Accordingly, the engine can be controlled stably, fuel efficiency is improved, and CO, HC and NOx in exhaust gas can also be reduced largely. |
