Control method of valve opening and closing for an engine and a valve control apparatus of the engine

A valve control apparatus of an engine, the control apparatus comprising:

• a data detector configured to detect data related to a current running state of a vehicle;
• an intake continuous variable valve duration (CVVD) apparatus configured to control an open duration of an intake valve;
• an intake continuous variable valve timing (CVVT) apparatus configured to control the opening and closing timing (phase) of the intake valve;
• an exhaust continuous variable valve duration (CVVD) apparatus configured to control an open duration of an exhaust valve;
• an exhaust continuous variable valve timing (CVVT) apparatus configured to control the opening and closing timing (phase) of the exhaust valve;
• and
• a controller configured to:
• determine the current driving region among a predetermined plurality of driving regions according to a speed and a torque of the engine based on a signal of the data detector;
• control operations of the intake CVVD apparatus, the intake CVVT apparatus, the exhaust CVVD apparatus, and the exhaust CVVT apparatus according to the driving region;
• and
• control the intake valve closing (IVC) timing to be between a top dead center (TDC) of a single crank rotation of the engine and a bottom dead center (BDC) of the single crank rotation of the engine in each of the plurality of driving regions,
• wherein the open duration of the intake valve is within a crank angle (CA) range of 180 degrees in each of the plurality of driving regions.