1. 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. Tomislav Skračić, MA Undergraduate English Course for MARINE ENGINEERS 4th Semester

2. LESSON 10 AIR AND EXHAUST SYSTEMS AND TURBOCHARGERS

3. Lesson 10 Air and Exhaust Systems and Turbochargers KEY WORDS turbocharger (n.)- turbopuhalo turbocharging (n.)- prednabijanje nozzle ring- prsten sapnice annular form- prstenast oblik outlet casing- dimnjak diminish in thickness- čija se debljina smanjuje impeller (n.)- impeler diffuser (n.)- razdjelnik, difuzor stationary blade- statorska (nepomična) lopatica impart (v.)- predati, prenijeti charge air cooler = intercooler- rashladnik zraka exhaust gas boiler = economiser- kotao za ispušne plinove

4. 1.GENERAL The power of any diesel engine is determined by the amount of fuel burnt in each cylinder per cycle and the speed at which it can run. The quantity of air provided by turbocharging is so great that the amount of fuel burnt per cylinder is not limited on this account but because of the temperature that can be withstood by exhaust valves, cylinder heads and pistons. Diesel fuel requires about 14.5 times its own mass of air for its complete combustion.

5. 2. TURBOCHARGER FUNCTIONS a) Pressure charging b) Scavenging The more oxygen during the engine compression stroke, the larger the amount of fuel to be ignited and therefore an increased engine output developed.

6. 3. TURBOCHARGER DEFINITION Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine. 4. OPERATION  exhaust gases (waste gases)

8. 3. TURBOCHARGER DEFINITION Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine. 4. OPERATION  exhaust gases (waste gases)  turbine (turbine wheel)

9. Turbine wheel

11. 3. TURBOCHARGER DEFINITION Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine. 4. OPERATION  exhaust gases (waste gases)  turbine (turbine wheel)  centrifugal compressor ( compressor; air compressor )

17. 3. TURBOCHARGER DEFINITION Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine. 4. OPERATION  exhaust gases (waste gases)  turbine (turbine wheel)  centrifugal compressor ( compressor; air compressor )  intercooler (charge air cooler)