摘要:
A method for controlling an engine during a start, the method comprising before rotation of the engine: opening an intake valve of at least one cylinder and starting injection of fuel from a port injector coupled to the cylinder so that at least some fuel enters the cylinder, closing the intake valve, and performing a spark in the at least one cylinder.
摘要:
A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions.
摘要:
A system and method for controlling electromechanical valves operating in an engine is presented. According to the method, valve timing can be adjusted in a number of ways. The method can also compensate for changes in the natural response of the valve apparatus.
摘要:
A method for operating at least an intake and exhaust valve in a cylinder with a piston of an engine in a vehicle, comprising during conditions of an engine shut-down, maintaining at least one of the intake and exhaust valves in a closed position, and during conditions where said at least one valve is in said closed position operating with the other of the intake and exhaust valve open, then closing the other of the intake and exhaust valve, and then opening the other of the intake and exhaust valve to generate braking torque to slow the engine.
摘要:
A system and method for controlling electromechanical valves operating in an engine is presented. According to the method, armature levitation position may be changed to accommodate varying rates of valve stem growth. The method may reduce valve noise during a wide range of engine operating conditions.
摘要:
A method to select cylinder and valve operational modes in an internal combustion engine with valves that may be deactivated. A simplified method to select cylinder and valve modes is presented.
摘要:
A method for controlling at least an electrically actuated valve to operate in at least a cylinder of an internal combustion engine, the method comprising deactivating an electrically actuated valve in response to an operating condition of a vehicle electrical system, said electrically actuated valve deactivated in a desired position.
摘要:
A method for operating at least an intake and exhaust valve in a cylinder with a piston of an engine in a vehicle, comprising during conditions of an engine shut-down, maintaining at least one of the intake and exhaust valves in a closed position, and during conditions where said at least one valve is in said closed position operating with the other of the intake and exhaust valve open, then closing the other of the intake and exhaust valve, and then opening the other of the intake and exhaust valve to generate braking torque to slow the engine.
摘要:
A system and method to control engine valve timing to during the start of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce engine vibration and hydrocarbon emissions during the start of an internal combustion engine. The method controls valves without an explicit four-stroke engine cycle during a start.
摘要:
A method is presented to control engine valve selection of an internal combustion engine. Electromechanical valves are selected in a manner to reduce fuel consumption and improve engine drivability.