Internal combustion engine and working cycle
1 Assignment
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Accused Products
Abstract
Invention of deriving mechanical work from a combustion gas in internal combustion engines and reciprocating internal combustion engines for carrying out the method, including methods and apparatuses for managing combustion charge densities, temperatures, pressures and turbulence in order to produce a true mastery within the power cylinder in order to increase fuel economy, power, and torque while minimizing polluting emissions. Methods and apparatuses for, among others, (i) producing an air charge, (ii) controlling the temperature, density and pressure of the air charge, (iii) transferring the air charge to a power cylinder of the engine such that an air charge having a weight and density selected from a range of weight and density levels ranging from below atmospheric weight and density to heavier-than-atmospheric weight and density is introduced into the power cylinder, and (iv) then compressing the air charge at a lower-than-normal compression ratio.
131 Citations
99 Claims
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1-24. -24. (canceled)
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25. A method of operating an internal combustion engine including at least one cylinder and a piston slidable in the cylinder, the method comprising:
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supplying pressurized air from an intake manifold to an air intake port of a chamber in the cylinder;
selectively operating an air intake valve to open the air intake port to allow pressurized air to flow between the chamber and the intake manifold substantially during a majority portion of a compression stroke of the piston; and
operably controlling a fuel supply system to inject fuel into the chamber after the intake valve is closed. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of operating an internal combustion engine including at least one cylinder and a piston slidable in the cylinder, the method comprising:
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imparting rotational movement to a first turbine and a first compressor of a first turbocharger with exhaust air flowing from an exhaust port of the cylinder;
imparting rotational movement to a second compressor;
compressing air drawn from atmosphere with the first compressor;
compressing air received from the first compressor with the second compressor;
supplying pressurized air from the second compressor to an air intake port of a chamber in the cylinder via an intake manifold;
controllably operating a fuel supply system to inject fuel directly into the chamber; and
selectively operating an air intake valve to open the air intake port to allow pressurized air to flow between the chamber and the intake manifold during a portion of a compression stroke of the piston, wherein fuel is injected during a combustion stroke. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. An internal combustion engine, comprising:
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a block defining at least one cylinder;
a head connected with said block, said head having an air intake port and an exhaust port;
a piston slidable in each cylinder;
an air intake valve controllably movable to open and close the air intake port;
a first turbocharger including a first turbine coupled with a first compressor, the first turbine being in fluid communication with the exhaust port, the first compressor being in fluid communication with the air intake port;
a second compressor being in fluid communication with atmosphere and the first compressor;
a fuel supply system operable to controllably inject fuel into the chamber; and
a first controller configured to selectively operate the air intake valve to remain open during a portion of a compression stroke of the piston, and a second controller configured to inject fuel into the chamber during an combustion stroke. - View Dependent Claims (47, 48, 49, 50)
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51. An internal combustion engine, comprising:
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a block defining at least one cylinder;
a head connected with said block, said head having an air intake port and an exhaust port;
a piston slidable in each cylinder;
an air intake valve assembly connectable with a cam assembly to controllably move an intake valve to open and close the air intake port;
a first turbocharger including a first turbine coupled with a first compressor, the first turbine being in fluid communication with the exhaust port and an exhaust duct, the first compressor being in fluid communication with the air intake port;
a second compressor, the second compressor being in fluid communication with atmosphere and the first compressor;
a fuel supply system operable to controllably inject fuel into the chamber; and
a variable intake valve mechanism connectable with said air intake valve. - View Dependent Claims (52, 53, 54, 55, 56)
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57. A method of controlling an internal combustion engine having a variable compression ratio, said engine having a block defining a cylinder, a piston slidable in said cylinder, a head connected with said block, said piston, said cylinder, and said head defining a chamber, the method comprising:
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pressurizing air;
supplying said air to an intake manifold of the engine;
maintaining fluid communication between said chamber and the intake manifold during a portion of an intake stroke and through a predetermined portion of a compression stroke; and
supplying a pressurized fuel directly to the chamber during a portion of a combustion stroke. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. A method of controlling an internal combustion engine having a variable compression ratio, said engine having a block defining a cylinder, a piston slidable in said cylinder, a head connected with said block, said piston, said cylinder, and said head defining a chamber, the method comprising:
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pressurizing air to a ratio of at least 4;
1 with respect to atmospheric pressure;
supplying the pressurized air to an intake manifold of the engine;
maintaining fluid communication between the chamber and the intake manifold during an intake stroke and a majority of a compression stroke; and
supplying a fuel to the chamber during at least a portion of the remaining compression stroke. - View Dependent Claims (70, 71, 72, 73)
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74. A method of operating an internal combustion engine including at least one cylinder and a piston slidable in the cylinder, the method comprising:
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supplying a mixture of pressurized air and recirculated exhaust gas from an intake manifold to an air intake port of a chamber in the cylinder;
selectively operating an air intake valve to open the air intake port to allow the pressurized air and exhaust gas mixture to flow between the chamber and the intake manifold substantially during a majority portion of a compression stroke of the piston; and
operably controlling a fuel supply system to inject fuel into the chamber after the intake valve is closed. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85)
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86. A variable compression ratio internal combustion engine, comprising:
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an engine block defining at least one cylinder;
a head connected with said engine block, including an air intake port, and an exhaust port;
a piston slidable in each cylinder;
a chamber being defined by said head, said piston, and said cylinder;
an air intake valve controllably movable to open and close the air intake port;
an air supply system including at least one turbocharger fluidly connected to the air intake port;
an exhaust gas recirculation system operable to controllably provide a portion of exhaust gas from the exhaust port to the air supply system;
a fuel supply system operable to controllably inject fuel into the chamber at a selected timing;
a variable intake valve closing mechanism configured to keep the intake valve open by selective operation of the variable intake valve closing mechanism; and
a controller configured to operate the intake valve to remain open for a portion of a second half of a compression stroke. - View Dependent Claims (87, 88, 89)
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90. A method of controlling an internal combustion engine having a variable compression ratio, said engine having a block defining a cylinder, a piston slidable in said cylinder, a head connected with said block, said piston, said cylinder, and said head defining a chamber, the method comprising:
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pressurizing a mixture of air and recirculated exhaust gas;
supplying said air and exhaust gas mixture to an intake manifold of the engine;
maintaining fluid communication between said chamber and the intake manifold during a portion of an intake stroke and through a predetermined portion of a compression stroke; and
supplying a pressurized fuel directly to the chamber during a portion of a combustion stroke. - View Dependent Claims (91, 92, 93, 94, 95, 96, 97, 98, 99)
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Specification