Internal combustion engine and controller for internal combustion engine

A controller for an internal combustion engine, the controller comprising control circuitry, wherein

• the internal combustion engine includes:
• a cylindrical cylinder having a cylinder central axis;
• an intake passage connected to the cylinder;
• a water injection valve located in the intake passage and configured to inject water into the cylinder, the water injection valve having a water valve tip and a water axis, the water valve tip being a tip of the water injection valve, and the water axis being an injection axis of the water from the water injection valve;
• a fuel injection valve configured to inject gaseous fuel directly into the cylinder, the fuel injection valve having a fuel valve tip and a fuel axis, the fuel valve tip being a tip of the fuel injection valve, and the fuel axis being a main injection axis of the gaseous fuel from the fuel injection valve;
• and
• an intake valve that opens and closes an opening of the intake passage closer to the cylinder, wherein
• the internal combustion engine has a specific cross-section that is a plane parallel to the cylinder central axis, the specific cross-section including the water valve tip and the fuel valve tip,
• the water axis and the fuel axis intersect each other in the cylinder in the specific cross-section, and
• the control circuitry is configured to:
• cause the water injection valve to inject the water when the intake valve is open;
• and
• cause the fuel injection valve to inject the gaseous fuel before the intake valve closes, wherein the fuel axis is located farther from the water injection valve than a central axis of the fuel injection valve in the specific cross-section.