Abstract: A method is disclosed for operating an engine with a first cylinder providing a net flow of gases from the intake to the exhaust while combusting; and a second cylinder providing a net flow of gases from the exhaust to the intake. Both the first and second cylinders may carry out combustion during such operation.

Abstract: A method for operating a multi-stroke homogeneous charge compression ignition engine is described. The method includes late intake valve opening (LIVO) and also cycling air and fuel charge from the cylinder back into the intake manifold during a compression stroke to mix the air and fuel charge for later reintroduction and combustion.

Abstract: A method is disclosed for operating an engine with a first cylinder providing a net flow of gases from the intake to the exhaust while combusting; and a second cylinder providing a net flow of gases from the exhaust to the intake. Both the first and second cylinders may carry out combustion during such operation.

Abstract: A method of operating an engine is provided. The engine includes operating a cylinder with net exhaust flow from the exhaust manifold, through the cylinder, to the intake manifold. Concurrently, another cylinder may operate to carry out combustion with net flow from the intake to the exhaust. In this way, exhaust in the intake manifold may be adjusted by varying valve operation of the first cylinder.

Abstract: A system for controlling a multiple cylinder internal combustion engine having a plurality of cylinders with electronically actuated valves (EVA) is presented. The system is designed to improve the torque delivery of an EVA engine that operates a portion of cylinders in an HCCI combustion mode.

Abstract: A method is disclosed for operating an engine with a first cylinder providing a net flow of gases from the intake to the exhaust while combusting; and a second cylinder providing a net flow of gases from the exhaust to the intake. Both the first and second cylinders may carry out combustion during such operation.

Abstract: An engine is operated with a first cylinder to provide a net flow of gases from the engine intake to the engine exhaust while a second cylinder returns combusted gases back to the intake to control a timing of auto-ignition combustion in the first cylinder.

Abstract: A method of operating an engine is provided. The engine includes operating a cylinder with net exhaust flow from the exhaust manifold, through the cylinder, to the intake manifold. Concurrently, another cylinder may operate to carry out combustion with net flow from the intake to the exhaust. In this way, exhaust in the intake manifold may be adjusted by varying valve operation of the first cylinder.

Abstract: A system for controlling a multiple cylinder internal combustion engine with electromagnetic valve actuation, comprising of at least one cylinder with an engine cylinder valve, a second controller operably coupled to the engine cylinder valve, said second controller configured to adjust at least one of the valve opening and closing timing of the engine cylinder valve, and a first controller connected with the second controller over a first link and a second link, wherein the first controller is configured to send an engine position indication signal to the second controller over the first link and receive a status signal from the second controller over the second link, and wherein the first controller outputs a synchronization degradation signal responsive to a synchronization error between the engine position indication signal and the status signal.

Abstract: An engine is operated with a first cylinder to provide a net flow of gases from the engine intake to the engine exhaust while a second cylinder returns combusted gases back to the intake to control a timing of auto-ignition combustion in the first cylinder.

Abstract: A method of operating an engine is provided. The engine includes at least one cylinder communicating with an intake manifold via an intake manifold valve and an exhaust manifold via an exhaust manifold valve, the cylinder including a piston arranged within the cylinder, wherein the piston is coupled to a crankshaft of the engine. The method comprises discontinuing combustion in the cylinder during a plurality of cycles of the engine; during the plurality of cycles, operating the exhaust manifold valve and the intake manifold valve to provide a net flow of gases from the exhaust manifold to the intake manifold via the cylinder and adjusting a torque signature provided to the crankshaft during each cycle by the piston responsive to an operating condition.

Abstract: An engine is operated with a first cylinder to provide a net flow of gases from the engine intake to the engine exhaust while a second cylinder returns combusted gases back to the intake to control a timing of auto-ignition combustion in the first cylinder.

Abstract: A method for controlling exhaust gas recirculation is presented. In one embodiment, exhaust gases are routed from the exhaust manifold through a cylinder and into an intake manifold. In some embodiments, the method may be used when a large amount of EGR is desired.

Abstract: A system for controlling a multiple cylinder internal combustion engine with electromagnetic valve actuation, comprising of at least one cylinder with an engine cylinder valve, a second controller operably coupled to the engine cylinder valve, said second controller configured to adjust at least one of the valve opening and closing timing of the engine cylinder valve, and a first controller connected with the second controller over a first link and a second link, wherein the first controller is configured to send an engine position indication signal to the second controller over the first link and receive a status signal from the second controller over the second link, and wherein the first controller outputs a synchronization degradation signal responsive to a synchronization error between the engine position indication signal and the status signal.

Abstract: A system for controlling a multiple cylinder internal combustion engine is presented. The system operates a first portion of cylinders in a homogeneous charge compression ignition (HCCI) mode and a second portion of cylinders in a non-HCCI mode, and uses an engine controller that is coupled to the first and second portions of cylinders to electronically actuate valves to hold a combusted air and fuel charge in the second portion of cylinders, and exhaust the combusted air and fuel charge to adjust the residual air-to-fuel ratio of the engine.

Abstract: A method for operating a multi-stroke homogeneous charge compression ignition engine having a plurality of cylinders using electronic valve actuation is described. The method includes actuating at least one intake valve of a cylinder with a late intake valve opening (LIVO); receiving an air and fuel charge in the cylinder; opening the at least one intake valve during a compression stroke of a piston in the cylinder to cycle the air and fuel charge into an intake manifold to mix the air and fuel charge; opening the at least one intake valve to receive at least some of the mixed air and fuel charge from the intake manifold during an intake stroke; and compressing the mixed air and fuel charge to auto-ignition to generate HCCI combustion without applying spark ignition to the mixed air and fuel charge.

Abstract: As one embodiment, a method of operating an engine including at least a first cylinder and a second cylinder is provided. The method comprises operating the first cylinder of the engine to provide a net flow of gases from an intake manifold to an exhaust manifold for a plurality of cycles of the first cylinder and combusting a first mixture including the gases in the first cylinder by auto-ignition; and during the operation of the first cylinder, repetitively operating the second cylinder of the engine to admit gases from the intake manifold into the second cylinder and retaining the admitted gases within the second cylinder for a period before exhausting the admitted gases into the intake manifold; and adjusting an operating parameter of the second cylinder to vary a timing of the auto-ignition by the first cylinder.

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.

Abstract: A method of operating an engine is provided. The engine includes at least one cylinder communicating with an intake manifold via an intake manifold valve and an exhaust manifold via an exhaust manifold valve, the cylinder including a piston arranged within the cylinder, wherein the piston is coupled to a crankshaft of the engine. The method comprises discontinuing combustion in the cylinder during a plurality of cycles of the engine; during the plurality of cycles, operating the exhaust manifold valve and the intake manifold valve to provide a net flow of gases from the exhaust manifold to the intake manifold via the cylinder and adjusting a torque signature provided to the crankshaft during each cycle by the piston responsive to an operating condition.

Abstract: As one embodiment, a method of operating an engine including at least a first cylinder and a second cylinder is provided. The method comprises operating the first cylinder of the engine to provide a net flow of gases from an intake manifold to an exhaust manifold over a plurality of cycles of the first cylinder and performing auto-ignition in said first cylinder of a mixture including said gases; 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.