| 摘要 |
A system and method for performing partial cylinder cut-off of an internal combustion engine is provided, the system including a rocker arm including first and second arms that are selectively joined together; a rocker arm connecting unit operated by hydraulic pressure and which performs the operation of selectively joining the first and second arms of the rocker arm; a separation-preventing unit interposed between the rocker arm and the rocker arm connecting unit, the separation-preventing unit preventing the separation of the rocker arm from the rocker arm connecting unit; and a hydraulic pressure supply unit controlled by an electronic control unit to supply and exhaust hydraulic pressure to and from the rocker arm connecting unit, the electronic control unit performing control of the hydraulic pressure supply unit according to comparisons made between received signals of vehicle state and pre-installed data.
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