초록

A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions.

대표청구항 ▼

The invention claimed is: 1. A system, comprising a hybrid-electric vehicle; an engine coupled in the hybrid-electric vehicle, the engine having at least a first and second cylinder, each with an electrically actuated valve, and at least one of the cylinders having at least three valves, wherein at

The invention claimed is: 1. A system, comprising a hybrid-electric vehicle; an engine coupled in the hybrid-electric vehicle, the engine having at least a first and second cylinder, each with an electrically actuated valve, and at least one of the cylinders having at least three valves, wherein at least two valves communicate with a common manifold; a controller configured to: deactivate at least one of the cylinders by deactivating its respective electrically actuated valve; vary a number of strokes in a combustion cycle of at least one of the cylinders via its respective electrically actuated valve; and vary a valve pattern between the cylinders; wherein the variation between valve patterns includes a physical region of operating valves in the cylinders. 2. The system of 1 wherein the cylinders operate with varied valve patterns during a common engine cycle. 3. A system, comprising: a hybrid-electric vehicle; an engine coupled in the hybrid-electric vehicle, the engine having at least a cylinder with at least three valves including an electrically actuated valve, wherein at least two valves communicate with a common manifold; a controller configured to: deactivate the cylinder by deactivating the electrically actuated valve of the cylinder; vary a number of strokes in a combustion cycle of the cylinder via the electrically actuated valve of the cylinder; and vary a valve pattern of the cylinder; wherein the variation includes varying a physical region of operating valves in the cylinder between a first pattern during a first condition and a second pattern during a second condition. 4. The system of claim 3 wherein the conditions include temperature. 5. The system of claim 3 wherein the conditions include engine speed. 6. The system of claim 3 wherein the conditions include a condition of the electrically actuated valve. 7. The system of claim 3 wherein the conditions include a temperature of an actuated coupled to the electrically actuated valve. 8. The system of claim 7 wherein said valve actuator is comprised of at least an armature, a coil, and a core. 9. The system of 8 wherein electrically actuated valve is an intake valve.