Exhaust Systems Flashcards
(23 cards)
Name two types of reciprocating engine exhaust systems
Short stock and collector system
What drawback in using collector type exhaust systems is more than offset when used on turbocharged engines
Loss of horsepower due to exhaust system back pressure
What could result if the internal baffles or diffusers in an exhaust system fail
The flow of the exhaust gasses could be restricted resulting in a loss of engine power
What type of exhaust system is used on turbocharged engines
Collector system
What kind of material is normally used to make muffler shrouds found in the exhaust system
Stainless steel
How do you inspect internal baffles and diffusers of an exhaust system
Disassemble the exhaust system as necessary and visually inspecting the components
Why is an exhaust system failure considered a severe hazard
It can result in carbon monoxide poisoning, loss of engine power or fire
What could happen if lead, zinc, or galvanized marks are made on an exhaust system
Can cause a change in the structure which could result in cracks when heated
What happens if the heat exchanger leaks exhaust gasses into the induction system
There is loss of engine power
What is an indication of an exhaust gas leak
A flat gray or sooty black deposit in the area of the leak
Where are the most common places to find cracks in an exhaust system
At welding or clamped areas and at the flanges
What is a common cause of turbocharger waste gate sticking
Coke deposits or carbon buildup
What are exhaust system coke deposits
Excessive carbon buildup
Why are turbocharged exhaust system leaks very damaging at high altitudes
Pressure differential will cause the leaks to escape with torch like intensity
What is the result of changing the exhaust nozzle area of a turbine engine
engines performance and EGT changes
Name the components of a typical turbine exhaust nozzle
Tail cone, exhaust ducts and support struts
What is the purpose of thrust reversers
They help decelerate an aircraft after landing
How much thrust do the thrust reversers produce compared to the engines full forward thrust
A lot less
What are the two most commonly used type of thrust reversers
Clamshell and cascade
How are ceramic coated exhaust stocks cleaned
By degreasing only
What are the probes in a turbine exhaust pipe used for
measures exhaust gas temperature and pressure
What is the purpose of the exhaust system
removes high temperature noxious gases
How much thrust do the thrust reversers produce compared to the engines full forward thrust
A lot less
