Honda較新的...
i -VTEC I=i -VTEC+直噴技術
http://www.honda.co.jp/tech/auto/en...vtec/index.html

這個網頁Continous Variable Valve Lift (通稱CVVL)
同時介紹了BMW Valvetronic/Nissan VVEL/Toyota Valvematic
http://www.autozine.org/technical_s...gine/vvt_5.html
The earliest variable valve lift systems like Honda VTEC vary valve lift by switching between slow and fast cams at a threshold point.......