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Laser Ignition for Lean-Burn Engines

Researchers at the National Energy Technology Laboratory have successfully operated a laser-spark lean-burn natural gas reciprocating engine. Development of lean-burn engines is driven by demand for higher efficiencies and lower emissions, but delivering the high energy required to ignite an ultra-lean mixture destroys even the hardiest spark plugs. Plug durability is rapidly becoming a barrier issue. According to team leader Mike McMillian, laser-spark ignition solves heat loss problems and provides focused energy capable of ignition even under ultra-lean conditions unignitable with conventional systems.
 
Media contact: David Anna 412/386-4646, david.anna@netl.doe.gov