| 摘要 |
The present invention relates to a fuel injection method during cold start. The present invention relates to the fuel injection method during cold start, comprising: a step in which an injection valve performs pre-injection of a fuel to shield a low temperature on a surface of a combustion room, or an intake port formed under a cold start environment of an intake port area; a step in which the pre-injected fuel surrounds a wall of the intake port area in a liquid film state; a step of performing main injection of the fuel to supply the fuel to a combustion room area after an established time has passed; a step in which an intake valve is opened, and the main-injected fuel supplied into a cylinder; and a step of igniting a mixture of the fuel and air through an ignition plug. The fuel injection method of the present invention is able to reduce heat loss in the intake port area and the combustion room area. |
