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Tomislav Skračić, MA Undergraduate English Course for MARI NE ENGINEERS 3rd Semester

Tomislav Skračić, MA Undergraduate English Course for MARI NE ENGINEERS 3rd Semester. Essential reading: SPINČIĆ, A., PRITCHARD, B, An English Textbook For Marine Engineers 2 ., Pomorski fakultet, Rijeka 2009.

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Tomislav Skračić, MA Undergraduate English Course for MARI NE ENGINEERS 3rd Semester

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  1. Tomislav Skračić, MAUndergraduate English Course forMARINE ENGINEERS3rd Semester Essential reading: SPINČIĆ, A., PRITCHARD, B, An English Textbook For Marine Engineers 2., Pomorski fakultet, Rijeka 2009. LUZER, J., SPINČIĆ, A., Gramatička vježbenica engleskog jezika za pomorce, Pomorski fakultet, Rijeka 2003.

  2. Marine diesel engine – cross section

  3. Lesson 1Cylinder and Crankcase KEY WORDS crankcase (n.) - kućište koljenaste osovine bore (n.) - provrt, promjer cilindra liner (n.) - košuljica cilindra cooling water jacket - vodeni plašt cast iron - lijevano željezo casing (n.) - kućište overhaul (n.) - remont, temeljiti popravak, tehnički pregled, 'klasa' cylinder casting - kućište / blok cilindra fairly - poprilično withstand (v.) - izdržati, podnijeti stress (n.) - naprezanje, opterećenje resistance (n.) - otpor heat flow - strujanje topline, odvod topline

  4. Lesson 1Cylinder and Crankcase KEY WORDS cylinder head - glava cilindra cylinder cover - poklopac cilindra stud (n.) - usadni vijak, 'pržunjer' nut (n.) - matica gas-tight seal - plinonepropusna brtva tensile load - vlačno opterećenje entablature (n.) = under piston space - gornji dio stalka motora articulated - sastavljen od dijelova, zglobno spojen jack bolt - vijak glave motora tie bolt - kotveni vijak thrust bolt, tie bolt - vijak temeljnog ležaja preopterećen na tlak tie rod - kotvena šipka koja uzdužno spaja sve komponente

  5. Lesson 1Cylinder and Crankcase KEY WORDS bearing (n.) - ležaj bedplate (n.) - temeljna ploča column (n.) - stalak column (n.) = guide shoes for the cross-head - klizna staza križne glave frame (n.) - okvir, postolje gas pressure - tlak plinova steel member - čelični dio compression (n.) - kompresija, pritisak crankshaft (n.) - koljenasta osovina, radilica multi-throw shaft - višecilindarska koljenasta osovina low grade fuel - gorivo loše kvalitete

  6. Lesson 1Cylinder and Crankcase • DEFINITION OF A FRAME • The engine load carrying part that includes: • cylinder block • crankcase • bedplate (or base) • sump (or oil pan) • end plates

  7. Cylinder and Crankcase DEFINITION OF A CYLINDER BLOCK A cast iron casing which encloses / houses cylinder liners and supports heads.The heads are tightly secured by studs and nuts to the cylinder block.

  8. Crankcase - DEFINITION The crankcase is a housing for the crankshaft and provides space for its rotation. • Material • cast steel • cast steel & welded steel plates • Location A column or frame, mounted on the bedplate, forms the engine crankcase. • Connection • Bedplate to frames - by steel tie rods / long tie bolts • Cylinder covers to cylinder liners - by strong studs anchored in the cylinder block (M.A.N.)

  9. Crankcase • CRANKCASE EXPLOSION • Causes • Oil droplets are formed by oil splashing from the bearings mix with air. This mixture does not readily burn or explode unless there are overheated parts within the crankcase and presence of fuel oil. • Prevention • Proper maintenance, correct lubrication, cleanliness. • Safety arrangements • Crankcase explosion relief valves; • Inert gas flooding system; • Crankcase mist detector

  10. Crankcase • CRANKCASE EXPLOSION • Consequences • Minor explosion, flames, pressure shock wave (ruptures in crankcase doors) • Major explosion – widespread damage. • Actions • Stop engine until it cools down.

  11. Bedplate (Base) • DEFINITION • Main strength part providing rigid support for the main bearings and crankshaft. • STRUCTURE • longitudinalbox structures withstiffening membersandwebs • transverse membersorgirders • STRESSES • Heavy stressesin operation; • While supporting themain bearingsandbolts.

  12. Bedplate (Base) • FUNCTION • To support the frame and all working parts. • To collectcrankcase lubricating oiland return it to thesump / draining tank.

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