Expect Cylinder Shutdown on I-4s: Fully variable valvetrains make cylinder deactivation simple add-on for OHC 4-cyl. engines

摘要

CYLINDER DEACTIVATION, A FUEL-SAVING technology that has made V-8-powered pickups and SUVs more palatable for economy-minded buyers, is on the brink of resurgence. With a corporate average fuel economy mandate of 35.5 mpg (6.6 L/100 km) taking effect in 2016, the two primary suppliers of electronically controlled cylinder-deactivation (CD) systems each tell Ward's they have about 20 programs in the works with OEM customers.