Method for alternate control of CVVD malfunction and CVVD system thereof
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorMin-Kyu Won
Life of this patent
Estimating the term…
Abstract
A method for an alternate control of a continuously variable valve duration (CVVD) malfunction may include a CVVD failsafe control to resolve a calculation error of a cylinder charge amount due to a hardware failure of a CVVD system with the cylinder charge amount determined by any one of flow rate alternate, flow rate deviation correction, and valve duration update if the hardware failure is recognized by a CVVD controller, and to apply the cylinder charge amount to secure an air amount for a combustion chamber.
Claims20
A method of an alternate control of a continuously variable valve duration (CVVD) malfunction, the method comprising:
- a CVVD failsafe control to resolve a calculation error of a cylinder charge amount due to a hardware failure of a CVVD system with the cylinder charge amount determined by one of flow rate alternate, flow rate deviation correction, and valve duration update when the hardware failure is recognized by a CVVD controller, and to apply the cylinder charge amount to secure an air amount for a combustion chamber.
A continuously variable valve duration (CVVD) system comprising:
- a CVVD controller configured to perform an air amount alternate control of securing an air amount for a combustion chamber through determination of a cylinder charge amount by a flow rate alternate to resolve a calculation error of the cylinder charge amount due to a hardware failure, an air amount deviation control of securing the air amount for the combustion chamber through determination of the cylinder charge amount by a flow rate deviation correction, and an air amount prediction control of securing the air amount for the combustion chamber through determination of the cylinder charge amount by a valve duration update.
Dependencies are inferred from the claim text.