Method of controlling valve timing and valve duration using CVVT apparatus and CVVD apparatus
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorChi-Ho Moon
Life of this patent
Estimating the term…
Abstract
A method of controlling valve timing and valve duration using a CVVT apparatus and a CVVD apparatus, the CVVT apparatus being configured to adjust an opening time of a valve in a vehicle engine, the CVVD apparatus being configured to adjust a duration of a valve lift, the method may include determining a desired valve opening time and a desired valve closing time; determining a desired valve duration by the desired valve opening time and the desired valve closing time; determining a desired valve timing through the desired valve opening time and an actual valve duration measured in real time; and controlling the CVVD apparatus to accomplish the desired valve duration while controlling the CVVT apparatus to accomplish the desired valve timing.
Claims6
A method of controlling valve timing and valve duration using a continuously variable valve timing (CVVT) apparatus and a continuously variable valve duration (CVVD) apparatus, the CVVT apparatus being configured to adjust an opening time of a valve in a vehicle engine, the CVVD apparatus being configured to adjust a duration of a valve lift, the method comprising:
- determining, by a processor, a desired valve opening time and a desired valve closing time;
- determining, by the processor, a desired valve duration by the desired valve opening time and the desired valve closing time;
- determining, by the processor, a desired valve timing through the desired valve opening time and an actual valve duration measured in real time;
- and
- controlling, by the processor, the CVVD apparatus to accomplish the desired valve duration while controlling the CVVT apparatus to accomplish the desired valve timing.
A system of controlling valve timing and valve duration using a continuously variable valve timing (CVVT) apparatus and a continuously variable valve duration (CVVD) apparatus, the CVVT apparatus being configured to adjust an opening time of a valve in a vehicle engine, the CVVD apparatus being configured to adjust a duration of a valve lift, the system comprises a controller that includes a processor configured to:
- determine a desired valve opening time and a desired valve closing time;
- determine a desired valve duration by the desired valve opening time and the desired valve closing time;
- determine a desired valve timing through the desired valve opening time and an actual valve duration measured in real time;
- and
- control the CVVD apparatus to accomplish the desired valve duration while controlling the CVVT apparatus to accomplish the desired valve timing.
Dependencies are inferred from the claim text.