Ini adalah tugas mata kuliah Teknologi Motor Bensin tentang Exhaust Brake.
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Ini adalah tugas mata kuliah Teknologi Motor Bensin tentang Exhaust Brake.
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Universiti Kuala Lumpur Malaysian Institute of Aviation Technology
RECIP. ENGINE EXHAUST SYSTEM Adnan ayman kwedr 53211216137 6Bme1 QUIZ 1. How many types of Exhaust system in reciprocating engine? Short stack (open system) sy stem) Collector system 2. On which of the exhaust exhau st system that non-supercharged engine generally used? Short stack 3. What are the advantages of short stack? its removal and installation is simple, just by hold down nuts and clamps 4. What are the disadvantages of short stack? no silencing capability. as aircraft side-slipped, cold air could flow into these stacks and warp (bend/twist) the exhaust valve. 5. What are the disadvantages of collector system? raises the back pressure of the exhaust system, the gain in horsepower from turbo-supercharging more than offsets the loss in horsepower that results from increased back pressure. 6. How do you install exhaust system with spring loaded ball joints? must be tightened in such way that it is loose enough for expansion but tight enough to prevent leakage 7. What is the function of slip joint in radial engine exhaust system? alignment of exhaust components.
expansion and contraction when engine is running thus eliminate leakage. 8. Why the discharged end of the exhaust collector is cut tapered a ‘bayonet’? to reduce noise of discharge exhaust gases 9. What is the purpose of mufflers? to reduce noise of discharge exhaust gases from exhaust collector 10. Why the muffler with the stainless steel shroud is referred as the heat exchanger? Because the heated air from the exchanger used for: cabin heat de-ice or anti-ice 11. How does the exhaust augmentor functions? it uses the velocity of exhaust gases to produce venturi effect to draw airflow over the engine 12. What is the purpose of augmentor vane in some exhaust augmentor? direct cooling air to the magnetos and the generator. 13. Reciprocating engine exhaust system that have sloppy weld beads which protrude internally are unacceptable since they cause_ local hot sports 14. What types of nuts are used to hold exhaust system to the cylinder heads on reciprocating engines? Brass or heat-resistant nuts 15. Excessive carbon deposit (coke) build-ups may cause the waste gate valve to stick in the __closed ____ position and causing __overboost ____ condition. 16. What three things that could be caused by exhaust failure? EXHAUST FAILURES. a. A primary reason for most exhaust system failures is inadequate and infrequent inspections/checks and the lack of routine and preventive maintenance between inspections. Exhaust systems deteriorate for the following reasons:
(1) Engine operating temperatures. (2) Vibration which causes metal fatigue in areas of stress concentration and wear at joints or connections. (3) Engine backfiring and unburned fuel in the muffler.
You have just replaced a section of exhaust pipe and are now going to run the engine and check for the leaks. What should you look for? Firewall seals 17.
18. What type of material can you use to mark on exhaust systems? Non-lead markers 19. What is the purpose of a slip joint in an exhaust collector ring? it aids in alignment and absorbs expansion. 20. Cracks in reciprocating exhaust systems are most likely to form at welded or clamped areas and at the flanges.
