| 摘要 |
PROBLEM TO BE SOLVED: To suppress the deterioration of the combustion of an engine and the stability of the operation of the engine while increasing the fuel efficiency of the engine. SOLUTION: This valve timing control device of an engine includes a valve control means 43 for controlling an intake valve control mechanism 32 and an exhaust valve control mechanism 33 so that both a first exhaust valve 28R and a first intake valve 27F are closed during an intake stroke (a negative overlapped period is set) when a load TQ on the engine calculated by an engine load calculation means 42 is equal to or higher than a low and medium torque threshold TQ<SB>th2</SB>. COPYRIGHT: (C)2011,JPO&INPIT
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