DOE Vehicle Technologies Program

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Negative Valve Overlap: A Key to Controlling Lean, Gasoline Auto-Ignition?

Post, October 21, 2013 • By Richard Steeper The drive for cleaner, more efficient engines has pushed research toward low-temperature gasoline combustion (LTGC) strategies that offer hope of achieving mandates for ultra-low engine-out emissions. Such strategies typically exploit auto-ignition to avoid the high-temperature flames associated with spark ignition. However, this approach makes LTGC control a...