ASTORIA, OR – Cylinder-deactivation technology, popular with several major auto makers as a means to enhance engine economy, has little value in real-world driving and is not worth pursuing, Ford Motor Co. officials say. The technology shuts down half the engine’s cylinders when they are not needed, resulting in better fuel economy, say manufacturers that use it. General Motors Corp. initially coined its technology Displacement on Demand (DoD), but since has renamed it Active Fuel ...
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