Direct injection: A fuel injection system for diesel engines, wherein the fuel is injected directly into the combustion chamber, onto the top of the piston. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostDirect ignition Next PostDisplacement