Water jacket: Passage around the engine cylinder for the circulation of coolant. These arc cast as integral parts of the cylinder block and head. 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 PostWankel engine Next PostWheel motor