18883213. Control Method of Valve Opening and Closing (Kia Corporation)
Control Method of Valve Opening and Closing
Organization Name
Inventor(s)
Sangyeon Han of Hwaseong-si KR
Kiyoung Kwon of Hwaseong-si KR
Jinyoung Jung of Hwaseong-si KR
Young Nam Kim of Hwaseong-si KR
You Sang Son of Hwaseong-si KR
Back Sik Kim of Hwaseong-si KR
Sangjae Park of Hwaseong-si KR
Control Method of Valve Opening and Closing
This abstract first appeared for US patent application 18883213 titled 'Control Method of Valve Opening and Closing
Original Abstract Submitted
A control method controlling valve opening and closing for an engine including an intake CVVD apparatus, an intake CVVT apparatus, an exhaust CVVD apparatus, and an exhaust CVVT apparatus is disclosed. The control method includes determining, by a controller, a driving condition region among a predetermined plurality of driving condition regions of the engine defined based on a speed and a torque of the engine, and controlling, by the controller, opening timing and closing timing of each intake valve and exhaust valve wherein the driving condition region of the engine corresponds to a predetermined low torque region, the controller outputs a control signal so that an intake valve closing (IVC) timing is before bottom dead center, and an exhaust valve opening (EVO) timing is before the bottom dead center.