Reciprocating engines Flashcards
Dynamic damper purpose on crankshaft
They reduce engine vibration
What types of bearing are generally found in reciprocating engines
Plain, ball and roller bearings
Are the connecting rods used in each cylinder of a radial engine the same
No, radial engines use master and articulating rod assemblies
Name the different parts of piston rings
oil control, compression and oil scraper
where should piston rings gaps be installed relative to each other and why
Compression ring gaps should be staggered so that they do not align. this prevents excessive blow by
what could result from incorrectly installed piston rings
Excessive oil consumption
what purpose de oil control rings serve
they regulate the thickness of the oil film on the cylinder walls
what is used to help prevent valve surge or floating in an aircraft engine
two or more springs are used on each valve
On engines with hydraulic valve lifters, what should the running valve clearance be
Zero
what is the purpose of the valve overlap
it allows better volumetric efficiency and lowers cylinder operating temperatures
