Exhaust Systems Flashcards
Name two types of reciprocating engine exhaust systems
Short stack and collector system
What is the purpose of the exhaust system?
To remove high temperature gasses
What drawback in using collector type exhaust systems is more than offset when used on turbocharged engines?
The loss of horsepower due to the 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?
The collector system
What kind of material is usually used to make the muffler shrouds found in the exhaust system?
Stainless steel
How do you inspect the internal baffles and diffusers of an exhaust system?
By disassembling the exhaust system as necessary and visually inspecting the components
Why is an exhaust system failure considered as 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?
They can cause corrosion to the structure, which could result in cracks when heated
What happens if the heat exchanger leaks exhaust gases into the induction system?
There is a 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 welded or clamped areas and at the flanges
What is a common cause of turbocharger waste gate sticking?
Coke deposits or carbon buildup
Why are turbocharged exhaust system leaks very damaging at high altitudes?
Pressure differential will cause the leak to escape with torch-like intensity
What are exhaust system coke deposits?
Excessive carbon buildup
