PRIN. OF INTERNAL COMBUSTION ENGINES - OD1619 LESSON 2/TASK 2
also fed oil under pressure from the pump.
Oil passages are drilled in the
crankshaft in order to lead oil to the connecting rod bearings.
deliver oil from the main bearing journals to the rod bearing journals.
engines, these openings are holes that index (line up) once for every crankshaft
In other engines, there are annular grooves in the main bearings
through which oil can feed constantly into the hole in the crankshaft.
pressurized oil that lubricates the connecting rod bearings goes on to lubricate
the pistons and walls by squirting out through strategically drilled holes. This
lubrication system is used in virtually all engines that are equipped with
semifloating piston pins.
FULL FORCE-FEED LUBRICATION SYSTEM.
d. Full Force-Feed Lubrication System (figure 63).
In the full force-feed
lubrication system, all of the bearings mentioned in paragraph 5b on page 76 are
lubricated by oil under pressure.
This includes main bearings, rod bearings,
camshaft bearings, and the complete valve mechanism. In addition, the full force-
feed lubrication system provides lubrication under pressure to the pistons