Laser ignition: The better alternative to spark plugs?: Page 3 of 3

June 28, 2019 //By Bill Schweber
laser ignition
A research team replaced the conventional spark-plug ignition of the gasoline engine with a laser-based system, yielding improvements in engine performance and reduced emissions.

With a lean, non-stoichiometric air-fuel ratio (λ~1.25) that leaves unburned air after combustion, the corresponding numbers were 29% increase in engine brake power, 21% decrease in BSFC, and 30% CO reduction.

The development of this LI system was done by a team comprising Romanian-based researchers from the National Institute for Laser, Plasma, and Radiation Physics, the Renault Technologie Roumanie, and the University Politehnica of Bucharest. Their Optics Express paper “On the improvement by laser ignition of the performances of a passenger car gasoline engine” provides full details of the laser-based electro-optical design, along with performance graphs and analysis of the above-cited metrics and many others.

This article first appeared in Electronic Design -

Read also: 

Plasma spark plug allows economical, clean gasoline engines

Will laser ignition replace the venerable spark plug?


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