| 摘要 |
PURPOSE:To adequately control fuel-atomizing assist air at idling and bypass flow in accordance with a warming condition, by opening air feed ports in an intake throttle valve bypass passage to a part in the vicinity of a main injector jet and the downstream side of a throttle valve. CONSTITUTION:An air port 52 is formed in the upstream of an intake throttle valve 22 provided in an intake pipe 18, then an air hole 30h and bypass passage 60 are arranged respectively in the vicinity of the jet of a main injector 30 and start injector 32. The air port 52 and the air hole 30h then the bypass passage 60 are connected respectively to an inlet port 56a and the first air feed port 56b then the second air feed port 56c of a flow control valve. A valve body 56e of the flow control valve is rotatively driven by a motor 56f controlled by a control circuit 50 to control only the first feed port 56b after an end of warming while the first and second feed ports 56b, 56c during warming operation. |
