Cylinder Charge Temperature Control for an Internal Combustion Engine
AssigneeFord Global Technologies, LLC
InventorVincent J. Winstead
Life of this patent
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Abstract
A method of operating an engine including at least a first cylinder and a second cylinder, the method comprising operating the first cylinder of the engine to provide a net flow of gases from an intake manifold to an exhaust manifold while combusting a mixture including said gases in said first cylinder during each cycle of the first cylinder; and during said operation of the first cylinder, operating the second cylinder of the engine to provide a net flow of gases from the exhaust manifold to the intake manifold, wherein said net flow of gases from the exhaust manifold to the intake manifold includes at least a portion of said combusted mixture by the first cylinder.
Claims20
A method of operating an engine including at least a first cylinder and a second cylinder, the method comprising:
- operating the first cylinder of the engine to provide a net flow of gases from an intake manifold to an exhaust manifold while combusting a mixture including said gases in said first cylinder during each cycle of the first cylinder;
- and
- during said operation of the first cylinder, operating the second cylinder of the engine to provide a net flow of gases from the exhaust manifold to the intake manifold, wherein said net flow of gases from the exhaust manifold to the intake manifold includes at least a portion of said combusted mixture by the first cylinder.
An engine system, comprising:
- a first cylinder;
- a second cylinder;
- an intake manifold coupled to the first and second cylinders;
- an exhaust manifold coupled to the first and second cylinders;
- and
- a control system configured to:
- operate the first cylinder to provide a net flow of gases from the intake manifold to the exhaust manifold over a cycle of the first cylinder while performing combustion of a mixture including intake air and exhaust gases in said first cylinder;
- during said operation of the first cylinder, operate the second cylinder of the engine to provide a net flow of gases for each cycle of the second cylinder from the exhaust manifold to the intake manifold;
- and
- adjust an operating parameter of the second cylinder to vary a condition of said gases that are provided to the intake manifold by the second cylinder.
A method of operating an engine including at least a first and a second cylinder, comprising:
- operating the first cylinder to combust a first mixture of fuel and gases, wherein said gases of the first mixture are received from an intake manifold;
- operating the second cylinder to combust a second mixture of fuel and gases, and providing a first portion of said combusted second mixture to the intake manifold and a second portion of said combusted second mixture to the exhaust manifold;
- and
- adjusting an amount of said first portion relative to an amount of said second portion to control a temperature of the first mixture, wherein the first portion is greater than the second portion.
Dependencies are inferred from the claim text.