MULTIPLE VARIABLE VALVE LIFT APPARATUS

摘要

A multiple variable valve lift apparatus connected with a valve opening and closing unit which is adapted to rolling-contact one end thereof with a cam and is operated to open or close by a rotation of the cam, and operating to select the cam which is rolling-contacted with the valve opening and closing unit for changing a valve lift, may include a normal cam rolling-contacting with the valve opening and closing unit so as to realize a normal lift of a predetermined valve, and a low cam rolling-contacting with the valve opening and closing unit so as to realize a valve lift which is lower and longer than the normal lift realized by the normal cam, wherein the normal cam or the low cam is selectively rolling-contacted to the valve opening/closing unit according to a driving state.

主权项

1. A multiple variable valve lift apparatus connected with a valve opening and closing unit which is adapted to rolling-contact one end thereof with a cam and is operated to open or close by a rotation of the cam, and operating to select the cam which is rolling-contacted with the valve opening and closing unit for changing a valve lift, the multiple variable valve lift apparatus comprising:
a normal cam rolling-contacting with the valve opening and closing unit so as to realize a normal lift of a predetermined valve; and a low cam rolling-contacting with the valve opening and closing unit so as to realize a valve lift which is lower and longer than the normal lift realized by the normal cam; wherein the normal cam or the low cam is selectively rolling-contacted to the valve opening/closing unit according to a driving state.