1. LESSON TEN

2. AIR AND EXHAUST SYSTEMS AND TURBOCHARGERS

3. 1.GENERAL

4. 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.

5. 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.

6. 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.

7. 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. 2. TURBOCHARGE FUNCTIONS

8. 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. 2. TURBOCHARGE FUNCTIONS a) Pressure charging

9. 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. 2. TURBOCHARGE FUNCTIONS a) Pressure charging b) Scavenging

10. 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. 2. TURBOCHARGE 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.

11. 3. TURBOCHARGER DEFINITION

12. Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine.

13. 3. TURBOCHARGER DEFINITION Turbocharger is a turbine driven air compressor powered by exhaust gases from the internal combustion engine. 4. OPERATION

14. 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 )

16. 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 )

19. 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 )

27. 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 )