| 1. | Continuously variable valve timing ( CVVT ) works on the intake side.
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| 2. | Variable valve timing is fitted to the later " M62TU " variants.
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| 3. | The Jaguar AJ-V6 engine is similar but adds variable valve timing.
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| 4. | See Valve timing, Variable valve timing, and Continuously variable valve timing.
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| 5. | The introduced VVT-i optimizes cam and valve timing to reduce emissions.
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| 6. | By using cylinder liners the engine's double overhead camshafts and variable valve timing.
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| 7. | This engine features NVTCS ( Nissan's Valve Timing Control System ).
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| 8. | Both are motivated by in-line six-cylinder engines with highly efficient variable valve timing.
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| 9. | Electronic Variable Valve Timing was introduced in the ( Alfetta ).
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| 10. | See Valve timing, Variable valve timing, and Continuously variable valve timing.
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