HYDRAULIC CIRCUIT FOR VALVE DEACTIVATION

Methods and systems are provided for deactivating a valve actuation mechanism. In one example, a system may include a hydraulic gallery that may deliver a restricted flow of hydraulic fluid from a hydraulic flow restrictor to a pressure relief valve within a valve deactivation oil control valve, and during a second condition may deliver an unrestricted flow of hydraulic fluid from the valve deactivation oil control valve to the hydraulic flow restrictor. The hydraulic flow restrictor may comprise two vertical bores within the camshaft carrier that are fluidically coupled via a restrictive groove on the bottom surface of the camshaft carrier. 本发明提供种用于停用气门驱动机构的方法和系统。在个示例中，系统可以包括液压油道，该液压油道可以从液压流动限制器输送限制流动的液压流体至气门停用油控制阀内的泄压阀并且在第二状况期间可以从气门停用油控制阀输送非限制流动的液压流体至液压流动限制器。液压流动限制器可以包含凸轮轴支架内经由凸轮轴支架的底面上的限制槽流体地连接的两个竖直孔。