Patent ID: 8695546

Claim:
An engine that is provided with a variable valve device, comprising: an hydraulic pressure lash adjuster pivotally supporting one side of a swing arm; a valve supporting the other side of the swing arm; an operating portion pushing a portion of the swing arm downwards so as to pivotally move the valve based on the hydraulic pressure lash adjuster; and a brake chamber oil supply line that is connected to a brake chamber for supplying the brake chamber with oil; wherein the hydraulic pressure lash adjuster comprises: a housing in which an insertion hole is formed therein; a slave piston that is slidably inserted into the insertion hole; a master piston of which an end thereof is placed into the insertion hole with a predetermined gap from the slave piston, wherein the other end of the master piston protrudes out of the housing and is engaged with the one side of the swing arm; and an oil control valve that opens or closes a passage communicating with a master chamber that is formed between the master piston and the slave piston in the housing, wherein the brake chamber is formed by a slave step of which an exterior diameter of the slave piston becomes narrower, a housing inside surface, a housing step of which an interior diameter of the housing becomes narrower, and a slave outside surface of the slave piston at an opposite side of the master piston, wherein an orifice is formed in the slave piston so as to continuously connect the brake chamber with a slave chamber, and wherein the slave outside surface of the slave piston and an inside end surface of the insertion hole are slidably in contact and the housing inside surface and external circumference of the slave piston are slidably in contact.