solid injection

Compare air injection.
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British Dictionary definitions for solid injection

solid injection

noun
  1. injection of fuel directly into the cylinder of an internal-combustion engine without the assistance of an air blast to atomize the fuelAlso called (in a petrol engine): direct injection Compare blast injection
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012