J. A. Spanogle, H. H. Foster
naca-tn-382
Jun 1931
This report presents test results obtained during an investigation of the performance of a single-cylinder, high-speed, compression-ignition test engine when using multiple-orifice fuel-injection valve nozzles in which the number and the direction of the orifices were varied independently.
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http://naca.central.cranfield.ac.uk/reports/1931/naca-tn-382.pdf