Patent ID: 11933240
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. An internal combustion engine system comprising:
a methanol fuel supply;
an engine having a plurality of combustion cylinders formed therein, and a plurality of methanol admission valves fluidly connected to the methanol fuel supply;
an intake conduit including a water port, and extending to the engine to feed a stream of pressurized intake air to the plurality of cylinders;
a water injector coupled to the water port;
a sensor structured to monitor an engine parameter indicative of at least one of an exhaust NOx level of the engine or a change to an exhaust NOx level of the engine;
a NOx control unit coupled to the sensor and in control communication with the water injector, the NOx control unit being structured to:
receive data of the monitored engine parameter produced by the sensor; and
output a water injection command to the water injector based on the data, to limit the exhaust NOx level of the engine via injection of water into the intake conduit.