Possible causes of exhaust valves Burning/Failing Prematurely
Mainly there are 2 possible reasons-
Source of fuel
- Fuels of Venezuelan origin tend to have higher vanadium content causes high temp. corrosion
- Vanadium is in soluble form and hence cannot be reduced by centrifuging or filtration
- Keep the operating temperatures below 500 0C to avoid this problem.
Overhauling
- Ensure overhauling is done by engine makers’ authorized workshops
- They have records of previous overhaul and will use the right method and material
Stresses on Exht V/V-
Answer:
- Thermal
- Mechanical
- Combine