| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection system for a two-stroke engine discharging little hydrocarbon gas and having the improved economical efficiency of fuel. SOLUTION: The fuel injection system having a main air introducing passage and a different injection fuel passage is provided with the first throttle valve of the main air introducing passage, the second throttle valve of the fuel passage, and an actuator mounted on the first and second throttle valves. The first throttle valve controls the airflow passing through the introducing passage, the second throttle valve controls the airflow passing through the fuel passage, the actuator makes the first and second throttle valves move between substantially closed and widely opened throttle positions during operation. The total necessary amount of engine fuel is mostly supplied by the dense fuel and air-fuel mixture formed through the fuel passage, and the total necessary amount of the introduction of engine air is mostly supplied through the main air introducing passage. |
