Patent ID: 7350486

Claim:
A variable valve actuation mechanism, comprising: a tappet, having an accommodation space formed therein; a sliding block, arranged inside the accommodation space, and a driving apparatus, for driving the sliding block to slide inside the accommodation space and thus enabling a part selected from the group consisting of the tappet and the sliding block to be selected for receiving a driving force and moved accordingly; wherein said sliding block further comprising: at least a first groove hole, formed at a side of the sliding block; at least a first hydraulic pressure sleeve, each being fitted inside the at least one first groove hole while enabling an end thereof to be fixedly connected to the tappet for enabling the sliding block to move slidably with respect to the first hydraulic pressure sleeve while being driven to move by the driving apparatus; at least a second groove hole, formed at a side of the sliding block other than that of the first groove hole; and at least a second hydraulic pressure sleeve, each being fitted inside the at least one second groove hole while enabling an end thereof to be fixedly connected to the tappet for enabling the sliding block to move slidably with respect to the second hydraulic pressure sleeve while being driven to move by the driving apparatus.