| 摘要 |
PROBLEM TO BE SOLVED: To suppress the worsening in operability of an internal combustion engine during a time when a variable valve system control device for the internal combustion engine obtains an authorized learned value in a reference valve driven condition. SOLUTION: When a spiral cam is estimated to be at the maximum rotating angleθmax in accordance with an operated condition (YES in S106, S109), a temporary learned value VLp obtained in accordance with a difference between theθmax and a rotating angleθv as a learned value is temporarily set as the minimum valve operating angle learned value VLg (S110, S112). The temporary learned value VLp is set in accordance with a realistic valve driven condition, instead of an initial value or a preset specified value. Thus, if a variable valve system is not set at the minimum valve operating angle, a satisfactory alternative value for the minimum valve operating angle learned value VLg can be set to maintain the operability of the engine. There is, therefore, no problem on the operating safety of the engine, caused by the forcible drive of the variable valve system. As a result, the above issue is solved. COPYRIGHT: (C)2005,JPO&NCIPI
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