| 摘要 |
PROBLEM TO BE SOLVED: To provide a stopping system operable with one valve per each bank of cylinders while continuing to keep phase conditions necessary for appropriately stopping-reoperating the cylinders. SOLUTION: A valve operating system for an internal combustion engine is provided with a camshaft 14 driving a plurality of intake and exhaust valve operators 22, 26 which may be selectively disabled through operation of a valve system including a hydraulic phase shifter. The hydraulic phase shifter is integrated with the camshaft 14 and connected between a high pressure oil pump 42 and at least the valve operator 22. The hydraulic phase shifter allows one group of valves, such as an exhaust valve 34, to be disabled before another group of valves, such as an intake valve 30. COPYRIGHT: (C)2009,JPO&INPIT
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