Besides, the camshaft phase change mechanism 11 is operated by oil pressure and the variable valve lift mechanism 12 is operated by electric force differently, so that bad movement and the like caused by {HEAD ~ deficiency} of {TAIL ~ oil pressure} or deficiency of electric force in case the camshaft phase change mechanism 11 and the variable valve lift mechanism 12 are operated by the same driving force, can be reduced 
Besides , the camshaft phase change mechanism 11 is operated by oil pressure and the variable valve lift mechanism 12 is operated by electric force differently , so that bad movement and the like caused by { HEAD ~ deficiency } of { TAIL ~ oil pressure } or deficiency of electric force in case the camshaft phase change mechanism 11 and the variable valve lift mechanism 12 are operated by the same driving force , can be reduced
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