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

Claim 0:
1. A method of operating an internal combustion engine system comprising:
feeding a stream of pressurized intake air from a compressor through an intake conduit to a plurality of cylinders in an engine;
admitting a methanol fuel to the plurality of cylinders by way of a plurality of methanol admission valves fluidly connected to a methanol fuel supply;
igniting the methanol fuel in each of the plurality of cylinders;
combusting the methanol fuel and the pressurized air in the plurality of cylinders;
monitoring an engine parameter indicative of at least one of an exhaust NOx level or a change to the exhaust NOx level of the engine;
injecting water, for reducing or limiting temperature in the plurality of cylinders, into the stream of pressurized intake air, based on the monitored engine parameter; and
limiting the exhaust NOx level of the engine based on the injecting water; and
heating the water prior to the injecting the water into the stream of pressurized intake air.