2006-12-01 12:17:56 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
K-Y Jelly
2006-12-01 12:20:52 · answer #1 · answered by Scythian1950 7 · 0⤊ 0⤋
Depends on the engine.
Some engines have a small hole drilled in the piston rod on the thrust side of the crack shaft journal - this hole squirts a small stream of oil constantly as the engine is running. This small stream of oil is directed onto the piston skirt and cylinder wall on each revolution.
Other engines rely on a splash system - as the rod rotates, the lower portion of the rod actually splashes the oil onto the cylinder wall.
You also must remember that as the engine is running, oil is being squeezed out of every clearance (main and rod bearings, cam bearings, etc) and the crankcase is a virtual mist of oil.
2006-12-01 20:53:45 · answer #2 · answered by LeAnne 7 · 2⤊ 0⤋
Saudi Arabia
2006-12-01 20:19:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
uh--oil--from the oil pump...
2006-12-01 20:19:35 · answer #4 · answered by Clycs 4 · 0⤊ 0⤋
oil?
2006-12-01 20:19:56 · answer #5 · answered by michael_gdl 4 · 0⤊ 0⤋
oil?
2006-12-01 20:19:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋