The oil reservoir in the front cover provides a constant supply of oil to a high-pressure oil pump mounted to the backside of the front cover. Oil drawn from the oil reservoir is constantly refilled by the engine lubrication system.
The gear-driven, high-pressure oil pump delivers oil through a high-pressure oil hose, through a cylinder
head passage into the high-pressure oil manifold beneath the valve cover. The manifold distributes to the top of each fuel injector.
When the OPEN coil for each injector is energized, the injectors use high-pressure oil to inject and atomize fuel in the combustion chambers. To end injection, the CLOSE coils are energized. Exhaust oil exits through two ports in the top of the fuel injectors, then drains back to sump.
