| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve timing control device for an internal combustion engine capable of reducing the amount of fuel adhered to an air suction tube after engine stop. SOLUTION: A practical condition is judged from an operation region in the steps 100 to 120. After ignition is turned off, the opening timing of a suction valve is advanced to BTDC20 deg. CA at a step 130, and the closing timing of an exhaust valve is retarded to ATDC20 deg. CA. By controlling the timing of the suction and exhaust valves as described above, the amount of fuel adhered to a suction air passage can be reduced. Particularly, when the start after that is a cold one before catalyst activation, since the amount of fuel adhered to the suction air passage is reduced, an HC gas can be prevented from being directly discharged, and thus emission can be reduced.
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