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

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 difficult challenge, especially during part-load…

Lyle Pickett Named SAE Fellow

Lyle Pickett has been named a Fellow of the Society of Automotive Engineers (SAE). Established in 1975, the Fellow grade honors and recognizes important engineering, scientific, and leadership achievements to enhance the status of SAE’s contributions to the profession and to society. Lyle was selected based on his pioneering research on direct-injection engine fuel sprays…