| 摘要 |
PURPOSE:To prevent a torque shock at the time of switching and obtain smooth switching by adjusting the air-fuel ratio to the preset value then performing manifold injection at the time of switching from the direct injection at a low load to the manifold injection at a high load. CONSTITUTION:The second fuel injection valve 18 is provided on the downstream side of a throttle valve 17 on an intake air passage 12 of a rotary piston engine RE or the like. On the other hand, a main nozzle 26 and a pilot nozzle 28 ere provided on the trailing side and the leading side of the ignition plug 7 of a rotary housing 8 respectively to constitute the first fuel injection value. Fuel pumps 36, 37 driven by the output shaft 35 of the engine RE via a timing belt 34 are provided on nozzle passages 32, 33 respectively, and they are controlled by a control circuit 15 respectively. A the time of switching from the low-load control to the high-load control, the air-fuel ratio is controlled to the preset value, then the fuel injection from the second fuel injection value 18 is performed.
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