Patent ID: 6883314

Claim:
A method of cooling combustion air for use with an engine, said engine having a block at least one cylinder bore being positioned in said block and having a piston assembly operatively positioned therein, a plurality of cooling passages position in the block, an intake manifold and an exhaust manifold; said method of cooling comprising: providing an engine cooling system, said engine cooling system having a heat exchanger being of a liquid-to-air type heat exchanger; providing a first liquid flow of liquid coolant being a portion of a total flow through said heat exchanger and said engine; compressing a flow of combustion air to a first preestablished pressure and a first preestablished temperature; compressing said flow of combustion air to a second preestablished pressure and a second preestablished temperature; cooling said flow of combustion air to a first temperature using a second liquid flow being the remainder of said total flow of said liquid coolant through a first aftercooler having a recipient fluid being said flow of liquid coolant through said engine; providing a flow control valve varying a flow rate between said first liquid flow and said second liquid flow; and cooling said flow of combustion air to a second temperature using a second aftercooler having a recipient fluid being an atmospheric air.