| 摘要 |
PURPOSE: An air injection device is provided to prevent a pressing member from blocking a connection unit. CONSTITUTION: An air injection device comprises an injector(110), an air supply unit(112), an intake pipe(120), a throttle valve(140), an air supply passage(130), and an air pressurizing unit(200). The injector injects fuel. The air supply unit supplies air around the injector. The air supplied to a cylinder passes through the intake pipe. The throttle valve is installed in the intake pipe and generates a pressure difference by opening and closing. The air supply passage is connected between the leading end of the throttle valve and the air supply unit and guides the air supplied to the air supply unit. The air pressurizing unit stores elastic energy by the operation of the throttle valve and pushes air to the air supply unit.
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