Engine inlet air cooling system and method

An engine inlet air cooling system, comprising:

• a first compressor configured to pressurize inlet air,
• a second compressor configured to further pressurize the inlet air, and
• a cooling circuit including;
• a coolant heat exchanger configured to transfer heat from a primary coolant liquid,
• an inlet air heat exchanger configured to transfer heat from the inlet air to the primary coolant liquid after the inlet air exits the first compressor and before the inlet air enters the second compressor, and
• a fuel cooled heat exchanger configured to variably, selectively, or variably and selectively transfer heat from the primary coolant liquid to a fuel of the engine.

An engine inlet air cooling system, comprising:

• an inlet air heat exchanger including a inlet air passage and a first primary coolant passage in thermal communication,
• a coolant heat exchanger including a second primary coolant passage,
• a fuel cooled heat exchanger including a fuel passage and a third primary coolant passage in thermal communication,
• an inlet air circuit including a first compressor configured to pressurize inlet air, the inlet air passage, and a second compressor configured to further pressurize the inlet air, wherein the inlet air passage fluidly connects the first compressor and the second compressor,
• a fuel circuit including the fuel passage, and
• a primary coolant circuit including;
• the first primary coolant passage,
• the second primary coolant passage fluidly connected to the first primary coolant passage,
• the third primary coolant passage fluidly connected to the first primary coolant passage,
• a fuel cooled heat exchanger bypass fluidly connected to the first primary coolant passage, and
• a control valve assembly selectively fluidly connecting the second primary coolant passage to the bypass, and selectively fluidly connecting the second primary coolant passage to the third primary coolant passage.

An engine system, comprising:

• an engine including an intake manifold, and a fueling device
• a fuel source,
• a first compressor configured to pressurize inlet air,
• a second compressor configured to further pressurize the inlet air, the second compressor fluidly connected to the intake manifold, and
• a cooling circuit including;
• a coolant heat exchanger configured to transfer heat from a primary coolant liquid,
• a inlet air heat exchanger configured to transfer heat from the inlet air to the primary coolant liquid after the inlet air exits the first compressor and before the inlet air enters the second compressor,
• a fuel cooled heat exchanger configured to selectively transfer heat from the coolant liquid to a fuel of the engine, the fuel cooled heat exchanger fluidly connecting the fueling device and the fuel source.