Precision drilling of fuel injector micro-holes

  • 14-Feb-2013 12:04 EST

Developed in part through a U.S. Department of Energy grant with Delphi Automotive and Microlutions, the R-Drill 200 from Raydiance is a laser-based machining solution for drilling micro holes in gasoline direct-injection (GDI) fuel injectors. The packaged solution includes a femtosecond laser (pulse duration in the 1-999 femtosecond regime), 3-D beam-scanning components, and micro-hole application software that provides a turnkey GDI workstation with the capability of drilling holes in less than a second. The R-Drill’s precision allows holes the size of a human hair in fuel injector spray nozzles to control spray volumes, increasing fuel efficiency up to 30%. While traditional precision drilling systems can damage the part while drilling, the R-200 platform’s femtosecond lasers machine material without generating heat. Material is removed to specification, preventing postprocessing steps and improving accuracy and cost-effectiveness. Bundled software enables the system to be configured to drill to exact geometries in a single step.

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