| abstract |
[PROBLEMS] To reduce the NOx concentration during combustion and increase the engine output accompanying water injection by appropriately setting the injection amount and injection timing of water injection before top dead center and water injection after top dead center. Provided are a method for operating a two-fluid injection internal combustion engine capable of exerting a balanced effect, and a two-fluid injection device for the internal combustion engine. In a four-cycle two-fluid injection internal combustion engine in which main fuel and another injection fluid are injected into a combustion chamber and combusted, the injection fluid is divided into two times before and after combustion top dead center, and the first time Injection is performed with a changeable injection amount ratio between the injection and the second injection, the first injection timing is set to overlap the injection timing of the main fuel, and in particular, the injection amount of the second injection is set to the first It is characterized in that it is set to be larger than the injection amount of the double injection. [Selection] Figure 1 |