New Laser Igniter Might Be Beginning of the End for Classic Spark Plug

: Scientists have developed a laser that's small and tough enough to work in the combustion engine of a vehicle yet powerful enough to ignite the fuel-air mixture that drives combustion cylinders. The researchers say that laser-ignited combustion engines could be more fuel efficient than traditional spark-plug ones: Unlike spark plugs, which transmit their sparks in milliseconds, lasers transmit energy within nanoseconds. Inventor Takunori Taira says that "timing---quick combustion---is very important. The more precise the timing, the more efficient the combustion and the better the fuel economy." Why Now: The new laser used in this laser igniter can withstand the harsh environment of an engine because it’s made from ceramic powders, which are stronger, more thermally conductive, and more durable than conventional lasers, say the inventors. Lasers vs Sparks: