Patent ID: 7040265

Claim:
An engine having an arrangement for deactivating a predetermined cylinder, the engine comprising: a cylinder block; a main oiling circuit with passages formed internal to the cylinder block; a deactivating lifter positioned internal to the cylinder block and arranged to be selectively actuated upon flow of oil to the deactivating lifter at a pressure substantially of the main oiling circuit; a lifter oil gallery control circuit formed internal to the cylinder block for providing oil to the deactivating lifter additional to oil provided to the lifter from the main oiling circuit, and the lifter oil gallery control circuit is arranged so that an oil flow path from the main oiling circuit to the deactivating lifter extends internal to the cylinder block; and a control valve in fluid communication with the main oiling circuit and the lifter oil gallery control circuit; wherein the control valve is arranged to allow selective flow of oil at a pressure substantially of the main oiling circuit from the main oiling circuit to the lifter oil gallery control circuit to control actuation of the lifter.