Method for cleaning continuously variable valve timing system
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorChi-Ho MOON
Life of this patent
Estimating the term…
Abstract
A method for cleaning a continuously variable valve timing (CVVT) system for removing foreign materials includes: switching a target operating value of the CVVT system to a predetermined setting value within a set operating region and performing cleaning of the CVVT system; and determining whether a valve timing control learning request exists for the CVVT system, and, when the valve timing control learning request exists, aborting the cleaning.
Claims14
A method for cleaning a continuously variable valve timing (CVVT) system for removing foreign materials, the method comprising steps of:
- switching, by a controller, a target operating value of the CVVT system to a predetermined setting value within a set operating region and cleaning the CVVT system;
- and
- determining, by the controller, whether a valve timing control learning request exists for the CVVT system, and aborting the cleaning when the valve timing control learning request exists.
The method of claim comprising:
- determining, by the controller, whether a switching between a high duty cycle and a low duty cycle is performed by a predetermined number of times after the cleaning is performed.
Dependencies are inferred from the claim text.