Tappets: The components to convert the rotary motion of the camshaft into reciprocating up and down motion of the push rods. 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 PostTailpipe Next PostThermal Efficiency – Indicated thermal efficiency or brake thermal efficiency