Cooling of engine combustion air

Claim 3

The method of cooling combustion air of claim 1 wherein said step of providing a flow of liquid coolant includes said flow of liquid coolant being an identical coolant for each of said engine and said first aftercooler.

Claim 4

The method of cooling combustion air of claim 1 wherein said steps of compressing a flow of combustion air to a first preestablished pressure and a first preestablished temperature include using a first turbocharger and said step of compressing said flow of combustion air to a second preestablished pressure and a second preestablished temperature includes using a second turbocharger.

Claim 5

The method of cooling combustion air of claim 1 wherein said step of providing an engine cooling system, said engine cooling system having a heat exchanger being of a liquid to an air type heat exchanger having atmospheric air being a donor fluid.

Claim 6

A combustion air cooling system being used with an engine, said engine having a block including a plurality of cooling passages, at least a cylinder bore having a flow of combustion fluid and a flow of combustible fluid being supplied thereto, said combustion fluid and said combustible fluid combusting and forming an exhaust; said combustion air cooling system comprising: an engine cooling system being in communication with said engine and including a heat exchanger being of a liquid-to-air type heat exchanger configuration and a liquid coolant pump, said liquid coolant pump defining a first flow of a liquid coolant, said first liquid flow circulating through said liquid coolant pump, said plurality of cooling passages in said block and said heat exchanger; a first compressor section being attached to said engine and having an inlet portion and an outlet portion, said first compressor section compressing said combustion fluid to a first preestablished pressure and a first preestablished temperature; a second compressor section being attached to said engine and having an inlet portion and an outlet portion, said inlet portion of said second compressor section being connected to said outlet portion of said first compressor section, said second compressor section compressing said combustion fluid to a second preestablished pressure and a second preestablished temperature; a turbine section being attached to said engine and being driven by said exhaust from said at least one cylinder bore, said turbine section driving said first compressor section and said second compressor section by a shaft; a first aftercooler being of an air-to-liquid type heat exchanger configuration being attached to said engine and having said combustion fluid flowing therethrough as said air and a portion of said liquid coolant flowing therethrough as said liquid prior to entering said engine, said first aftercooler having an inlet portion and an outlet portion and a liquid coolant inlet portion and a liquid coolant outlet portion; a second aftercooler being of an air-to-air type heat exchanger configuration being in communication with said engine and having said combustion fluid flowing therethrough as one of said air and having an atmospheric air flowing therethrough as an other of said air, said second aftercooler having a combustion air inlet portion being connected to said outlet portion of said first aftercooler and a combustion air outlet portion being connected to said at least one cylinder bore; a second liquid flow of said coolant, said liquid coolant pump defining said second liquid flow of said coolant, said second liquid flow of said coolant circulating through at least said liquid coolant pump and said first aftercooler; and a flow control valve varying a flow rate between said first liquid flow and said second liquid flow.

Claim 7

A combustion air cooling system being used with an engine, said engine having a block including a plurality of cooling passages, at least a cylinder bore having a flow of combustion fluid and a flow of combustible fluid being supplied thereto, said combustion fluid and said combustible fluid combusting and forming an exhaust; said combustion air cooling system comprising: an engine cooling system being in communication with said engine and including a heat exchanger being of a liquid-to-air type heat exchanger configuration and a liquid coolant pump, said liquid coolant pump defining a first flow of a liquid coolant, said first liquid flow circulating through said liquid coolant pump, said plurality of cooling passages in said block and said heat exchanger; a first compressor section being attached to said engine and having an inlet portion and an outlet portion, said first compressor section compressing said combustion fluid to a first preestablished pressure and a first preestablished temperature; a second compressor section being attached to said engine and having an inlet portion and an outlet portion, said inlet portion of said second compressor section being connected to said outlet portion of said first compressor section, said second compressor section compressing said combustion fluid to a second preestablished pressure and a second preestablished temperature; a turbine section being attached to said engine and being driven by said exhaust from said at least one cylinder bore, said turbine section driving said first compressor section and said second compressor section by a shaft; a first aftercooler being of an air-to-liquid type heat exchanger configuration being attached to said engine and having said combustion fluid flowing therethrough as said air and a portion of said liquid coolant flowing therethrough as said liquid prior to entering said engine, said first aftercooler having an inlet portion and an outlet portion and a liquid coolant inlet portion and a liquid coolant outlet portion; a second aftercooler being of an air-to-air type heat exchanger configuration being in communication with said engine and having said combustion fluid flowing therethrough as one of said air and having an atmospheric air flowing therethrough as an other of said air, said second aftercooler having a combustion air inlet portion being connected to said outlet portion of said first aftercooler and a combustion air outlet portion being connected to said at least one cylinder bore; a second liquid flow of said coolant, said liquid coolant pump defining said second liquid flow of said coolant, said second liquid flow of said coolant circulating through at least said liquid coolant pump and said first aftercooler; and a flow control valve varying a flow rate between said first liquid flow and said second liquid flow.

Claim 8

The combustion air cooling system of claim 5 wherein said second flow of said coolant circulating through said plurality of cooling passages in said block of said engine.

Claim 9

The combustion air cooling system of claim 5 wherein said first flow and said second flow of said coolant being mixed, said mixing being positioned at a coolant pump inlet portion.

Claim 10

The combustion air cooling system of claim 5 wherein said first flow and said second flow of said coolant being mixed, said mixing being positioned at a coolant pump outlet portion.

Claim 11

The combustion air cooling system of claim 5 wherein said engine including an oil cooler being attached to said engine and said first flow and said second flow of said coolant being mixed, said mixing being positioned at a coolant outlet portion of said oil cooler.

Claim 12

The combustion air cooling system of claim 5 wherein said engine including a thermostat being attached to said engine and first flow and said second flow of said coolant being mixed, said mixing being positioned at said thermostat.

Claim 13

The combustion air cooling system of claim 5 wherein said first flow and said second flow of said coolant being mixed and passing through said plurality of cooling passages in said block prior to being circulated through a heat exchanger.

Claim 14

The combustion air cooling system of claim 5 wherein said second flow of said coolant being controlled to a preestablished flow rate.

Claim 15

The combustion air cooling system of claim 12 wherein said preestablished flow rate being varied by said flow control valve being operative movable between a closed position and an open position.

Claim 16

The combustion air cooling system of claim 12 wherein said flow control valve being operative movable infinitely between said closed position and said open position.

Claim 17

The combustion air cooling system of claim 12 wherein preestablished flow rate being controlled by an orifice.

Claim 18

The combustion air cooling system of claim 12 wherein said preestablished flow rate of said second flow of said coolant being controlled by a preestablished cross sectional area through which said second flow passes.

Claim 19

The combustion air cooling system of claim 12 wherein said flow control valve being positioned between said closed position and said open position being positioned by a controller.

Claim 20

The combustion air cooling system of claim 17 wherein said controller monitoring at least one parameter of said engine.

Claim 21

The combustion air cooling system of claim 17 wherein said controller monitoring at least one parameter of said coolant.

Claim 22

The combustion air cooling system of claim 17 wherein said controller monitors at least one parameter of said compressed combustion air.

Claim 23

An engine has a block having at least one cylinder bore in which is operatively positioned a piston assembly, a plurality of cooling passages within said block, an intake manifold being in communication with said at least one cylinder bore by an intake valve mechanism, an exhaust manifold being in communication with said at least one cylinder bore by an exhaust valve mechanism and a cooling system having a heat exchanger being of a liquid-to-air type configuration being connected to said engine, said cooling system having a liquid coolant pump being driven by said engine and circulating a flow of liquid coolant within said plurality of cooling passages and said heat exchanger; said engine comprising: a first turbocharger being connected to said engine, said first turbocharger having a turbine section being driven by a low of exhaust gas from a second turbocharger, a compressor section having an inlet portion and an outlet portion; a first flow of combustion air exiting said outlet portion of said first turbocharger having a first pre-established pressure and a first pre-established temperature; said second turbocharger being connected to said engine, said second turbocharger having a turbine section being drive by said flow of exhaust gas from said exhaust manifold, a compressor section having an inlet portion and an outlet portion; a second flow of combustion air exiting said second turbocharger having a second pre-established pressure and a second pre-established temperature; a first after-cooler being of an air-to-liquid type heat exchanger, said liquid within said first after-cooler being a second portion of a total flow of liquid coolant circulating through said plurality of passages in said block and the air within said first after-cooler being said flow of combustion air; a flow control valve varying a flow rate between said second portion of a total flow of liquid coolant circulating through said first after-cooler and a first portion of the total flow circulating through said engine; a second after-cooler being of an air-to-air type heat exchanger, a one of said air within said second after-cooler being atmospheric air and an other of said air within said second after-cooler being said flow of combustion air; a third flow of combustion air after passing through said first turbocharger, said second turbocharger, said first after-cooler and said second after-cooler being communicated to said intake manifold; and a pre-established quantity of said third flow of combustion air being communicated to said at least one cylindrical bore by said intake valve mechanism moving between an open position and a close position.

Claim 24

An engine has a block having at least one cylinder bore in which is operatively positioned a piston assembly, a plurality of cooling passages within said block, an intake manifold being in communication with said at least one cylinder bore by an intake valve mechanism, an exhaust manifold being in communication with said at least one cylinder bore by an exhaust valve mechanism and a cooling system having a heat exchanger being of a liquid-to-air type configuration being connected to said engine, said cooling system having a liquid coolant pump being driven by said engine and circulating a flow of liquid coolant within said plurality of cooling passages and said heat exchanger; said engine comprising: a first turbocharger being connected to said engine, said first turbocharger having a turbine section being driven by a low of exhaust gas from a second turbocharger, a compressor section having an inlet portion and an outlet portion; a first flow of combustion air exiting said outlet portion of said first turbocharger having a first pre-established pressure and a first pre-established temperature; said second turbocharger being connected to said engine, said second turbocharger having a turbine section being drive by said flow of exhaust gas from said exhaust manifold, a compressor section having an inlet portion and an outlet portion; a second flow of combustion air exiting said second turbocharger having a second pre-established pressure and a second pre-established temperature; a first after-cooler being of an air-to-liquid type heat exchanger, said liquid within said first after-cooler being a second portion of a total flow of liquid coolant circulating through said plurality of passages in said block and the air within said first after-cooler being said flow of combustion air; a flow control valve varying a flow rate between said second portion of a total flow of liquid coolant circulating through said first after-cooler and a first portion of the total flow circulating through said engine; a second after-cooler being of an air-to-air type heat exchanger, a one of said air within said second after-cooler being atmospheric air and an other of said air within said second after-cooler being said flow of combustion air; a third flow of combustion air after passing through said first turbocharger, said second turbocharger, said first after-cooler and said second after-cooler being communicated to said intake manifold; and a pre-established quantity of said third flow of combustion air being communicated to said at least one cylindrical bore by said intake valve mechanism moving between an open position and a close position.

Claim 25

The engine of claim 21 wherein said intake valve mechanism moving between an open position and a closed position using a Miller cycle.

Claim 26

The engine of claim 22 wherein said Miller cycle includes a late intake valve mechanism being in said open position within a range of about 150 degrees to 60 degrees before a bottom dead center position.

Claim 27

The engine of claim 21 wherein said first aftercooler being position to cool only said first flow of combustion air.

Claim 28

The engine of claim 21 wherein said second aftercooler being position to cool said second flow of combustion air after said first flow of combustion air being cooled by said first aftercooler.

Claim 29

The engine of claim 21 wherein said atmospheric air passing through said second aftercooler having passed through said heat exchanger before passing through said second aftercooler.

Claim 30

The engine of claim 21 being positioned in one of a work machine and a vehicle.

Claim 31

A combustion air cooling system for use with an engine, said engine has an exhaust manifold and an intake manifold, at least one cylinder bore having a piston assembly therein being movable between a top dead center position (TDC) and a bottom dead center position (BDC), at least one intake valve mechanism being movable between an open position and a closed position during operation of said engine, a flow of combustion air being communicated between said intake manifold an said at least one cylinder bore during said open position and said flow of combustion air being prevented from communicating between said intake manifold and said at least one cylinder bore during said closed position; said combustion air cooling system comprising: an engine cooling system including a heat exchanger being of a liquid-to-air type heat exchanger configuration and a liquid coolant pump, said liquid coolant pump being attached to said engine and having a coolant pump outlet portion and a coolant pump inlet portion, said heat exchanger having a liquid coolant inlet and a liquid coolant outlet, said liquid coolant pump during operation of said engine causing a first liquid flow being a portion of a total flow to circulate through said engine and a second liquid flow being the remainder of the total flow to circulate through said heat exchanger, said engine cooling system having a flow of recipient fluid being an atmospheric air passing therethrough; a flow control valve varying a flow rate between said first liquid flow and said second liquid flow; a first turbocharger being positioned on said engine, said first turbocharger having a turbine section and during operation of said engine said turbine section being driven by a flow of exhaust gas exiting a second turbocharger, a compressor section being driven by said turbine section, said compressor section having an inlet portion and an outlet portion, said combustion air after passing from said inlet portion through said outlet portion having a first preestablished pressure; said second turbocharger being position on said engine, said second turbocharger having a turbine section and during operation of said engine said turbine section being driven by said flow of exhaust gas exiting said exhaust manifold, a compressor section being driven by said turbine section, having an inlet portion and an outlet portion, said combustion air after passing through said outlet portion of said first turbocharger entering said inlet portion of said second turbocharger and passing through said outlet portion having a second preestablished pressure being greater than said first preestablished pressure exiting said first turbocharger; a first aftercooler being of an air-to-liquid type heat exchanger configuration and having a recipient fluid therein, having a donor portion and a recipient portion being connected to said engine, said donor portion having a combustion air inlet portion, a combustion air transfer portion and a combustion air outlet portion, said recipient portion having a liquid coolant inlet portion, a liquid coolant transfer portion and a liquid coolant outlet portion, said first aftercooler having said liquid from said engine cooling system being said recipient fluid, said first aftercooler having said combustion air being said donor fluid and exiting said combustion air outlet portion of said first aftercooler at a first preestablished temperature; and a second aftercooler being of an air-to-air type heat exchanger configuration having a recipient fluid therein, having a donor portion and a recipient portion being connected to said engine, said donor portion having a combustion air inlet portion a combustion air transfer portion and a combustion air outlet portion, said recipient portion having an atmospheric air inlet portion, an atmospheric air transfer portion and an atmospheric air outlet portion, said second aftercooler having said atmospheric air being said recipient fluid, said second aftercooler having said combustion air being said donor fluid and exiting said combustion air outlet portion of said second aftercooler at a second preestablished temperature being less than said first preestablished temperature, said combustion air at said second preestablished pressure and said second preestablished temperature being communicated to said intake manifold and said at least one cylinder bore.

Claim 32

A combustion air cooling system for use with an engine, said engine has an exhaust manifold and an intake manifold, at least one cylinder bore having a piston assembly therein being movable between a top dead center position (TDC) and a bottom dead center position (BDC), at least one intake valve mechanism being movable between an open position and a closed position during operation of said engine, a flow of combustion air being communicated between said intake manifold an said at least one cylinder bore during said open position and said flow of combustion air being prevented from communicating between said intake manifold and said at least one cylinder bore during said closed position; said combustion air cooling system comprising: an engine cooling system including a heat exchanger being of a liquid-to-air type heat exchanger configuration and a liquid coolant pump, said liquid coolant pump being attached to said engine and having a coolant pump outlet portion and a coolant pump inlet portion, said heat exchanger having a liquid coolant inlet and a liquid coolant outlet, said liquid coolant pump during operation of said engine causing a first liquid flow being a portion of a total flow to circulate through said engine and a second liquid flow being the remainder of the total flow to circulate through said heat exchanger, said engine cooling system having a flow of recipient fluid being an atmospheric air passing therethrough; a flow control valve varying a flow rate between said first liquid flow and said second liquid flow; a first turbocharger being positioned on said engine, said first turbocharger having a turbine section and during operation of said engine said turbine section being driven by a flow of exhaust gas exiting a second turbocharger, a compressor section being driven by said turbine section, said compressor section having an inlet portion and an outlet portion, said combustion air after passing from said inlet portion through said outlet portion having a first preestablished pressure; said second turbocharger being position on said engine, said second turbocharger having a turbine section and during operation of said engine said turbine section being driven by said flow of exhaust gas exiting said exhaust manifold, a compressor section being driven by said turbine section, having an inlet portion and an outlet portion, said combustion air after passing through said outlet portion of said first turbocharger entering said inlet portion of said second turbocharger and passing through said outlet portion having a second preestablished pressure being greater than said first preestablished pressure exiting said first turbocharger; a first aftercooler being of an air-to-liquid type heat exchanger configuration and having a recipient fluid therein, having a donor portion and a recipient portion being connected to said engine, said donor portion having a combustion air inlet portion, a combustion air transfer portion and a combustion air outlet portion, said recipient portion having a liquid coolant inlet portion, a liquid coolant transfer portion and a liquid coolant outlet portion, said first aftercooler having said liquid from said engine cooling system being said recipient fluid, said first aftercooler having said combustion air being said donor fluid and exiting said combustion air outlet portion of said first aftercooler at a first preestablished temperature; and a second aftercooler being of an air-to-air type heat exchanger configuration having a recipient fluid therein, having a donor portion and a recipient portion being connected to said engine, said donor portion having a combustion air inlet portion a combustion air transfer portion and a combustion air outlet portion, said recipient portion having an atmospheric air inlet portion, an atmospheric air transfer portion and an atmospheric air outlet portion, said second aftercooler having said atmospheric air being said recipient fluid, said second aftercooler having said combustion air being said donor fluid and exiting said combustion air outlet portion of said second aftercooler at a second preestablished temperature being less than said first preestablished temperature, said combustion air at said second preestablished pressure and said second preestablished temperature being communicated to said intake manifold and said at least one cylinder bore.

Claim 33

The combustion air cooling system of claim 28 wherein said flow of combustion air passing from said outlet portion of said compressor section of said first turbocharger to said inlet portion of said compressor section of said second turbocharger through said outlet portion of said second turbocharger before entering said combustion air inlet portion of said first aftercooler and said second aftercooler respectively.

Claim 34

The combustion air cooling system of claim 28 wherein said flow of combustion air passing from said outlet portion of said compressor section of said first turbocharger to said combustion air inlet portion of said first aftercooler through said combustion air outlet portion of said first aftercooler before entering said inlet portion of said compressor section of said second turbocharger.

Claim 35

The combustion air cooling system of claim 28 wherein said flow of exhaust gas entering said turbine section and driving said second turbocharger, exiting said turbine section and entering said turbine section of said first turbocharger driving said first turbocharger.

Claim 36

The combustion air cooling system of claim 28 wherein said turbine section of said first turbocharger and said turbine section of said second turbocharger having a common turbine wheel.

Claim 37

The combustion air cooling system of claim 32 wherein said compressor section of said first turbocharger and said compressor section of said second turbocharger each have a separate compressor wheel.

Claim 38

The combustion air cooling system of claim 33 wherein said separate compressor wheel being positioned on a common shaft.

Claim 39

The combustion air cooling system of claim 28 wherein said liquid coolant inlet portion of said first aftercooler being in fluid communication with said liquid coolant pump of said engine cooling system.

Claim 40

The combustion air cooling system of claim 35 wherein said liquid coolant outlet portion of said first aftercooler being in fluid communication with a recipient coolant outlet portion of an oil cooler of said engine.

Claim 41

The combustion air cooling system of claim 28 wherein said recipient fluid passing through said first aftercooler being recirculated is void of passing directly through said heat exchanger.

Claim 42

The combustion air cooling system of claim 37 wherein said recipient fluid passing through said first aftercooler being mixed with a flow of said coolant and being circulated through said engine prior to being circulated through said heat exchanger.

Claim 43

The combustion air cooling system of claim 38 wherein said mixing of said flow of recipient fluid and said flow said coolant being positioned at a coolant pump inlet portion of said coolant pump.

Claim 44

The combustion air cooling system of claim 38 wherein said mixing of said flow of recipient fluid and said flow of said coolant being position at a recipient coolant outlet portion of said oil cooler.

Claim 45

The combustion air cooling system of claim 38 wherein said mixing of said flow of recipient fluid and said flow of said coolant being positioned at a thermostat.

Claim 46

The combustion air cooling system of claim 28 wherein said flow control valve operating between a closed position and an open position.

Claim 47

The combustion air cooling system of claim 42 wherein said flow control valve being in said closed position preventing a flow of said recipient fluid through said first aftercooler.

Claim 48

The combustion air cooling system of claim 43 wherein said flow control valve being in said open position having said flow of said recipient fluid passing through said first aftercooler.

Claim 49

The combustion air cooling system of claim 43 wherein said controller monitoring at least one parameter of said engine.

Claim 50

The combustion air cooling system of claim 43 wherein said controller monitoring at least one parameter of said coolant.

Claim 51

The combustion air cooling system of claim 43 wherein said controller monitoring at least one parameter of said compressed combustion air.

Claim 52

The combustion air cooling system of claim 42 wherein said flow control valve being positioned between said closed position and said open position being positioned by a controller.

Claim 53

The combustion air cooling system of claim 28 wherein said heat exchanger having a pair of side tanks and a plurality of tubes and fins therebetween.