System for lubricating a crankshaft

A system for lubricating a crankshaft of an engine, comprising:

• a first main journal comprising a first main journal housing and a first shaft;
• a first main journal oil passage extending at least partially through the first shaft;
• a first pin journal comprising a first pin journal housing and a first crank;
• a first oil passage extending at least partially through the first crank, the first oil passage in fluid communication with the first main journal oil passage;
• a second pin journal comprising a second pin journal housing and a second crank;
• and
• a second oil passage extending at least partially through the second crank, the second oil passage in fluid communication with the first main journal oil passage;
• a second main journal comprising a second main journal housing and a second shaft;
• a second main journal oil passage extending at least partially through the second shaft;
• a third main journal comprising a third main journal housing and a third shaft;
• a third main journal oil passage extending at least partially through the third shaft;
• a third pin journal comprising a third pin journal housing and a third crank;
• a third oil passage extending at least partially through the third crank, the third oil passage in fluid communication with the second main journal oil passage;
• a fourth pin journal comprising a fourth pin journal housing and a fourth crank;
• and
• a fourth oil passage extending at least partially through the fourth crank, the fourth oil passage in fluid communication with the third main journal oil passage;
• a third crank web rotatably coupled to the second main journal and the third pin journal, the third oil passage extending through the third crank web;
• a fourth crank web rotatably coupled to the third main journal and the fourth pin journal, the fourth oil passage extending through the fourth crank web;
• a fourth main journal comprising a fourth main journal housing and a fourth shaft;
• a fifth main journal comprising a fifth main journal housing and a fifth shaft;
• a fifth main journal oil passage extending at least partially through the fifth shaft;
• a sixth main journal comprising a sixth main journal housing and a sixth shaft;
• a sixth main journal oil passage extending at least partially through the sixth shaft;
• a fifth pin journal comprising a fifth pin journal housing and a fifth crank;
• and
• a fifth oil passage extending at least partially through the fifth crank, the fifth oil passage in fluid communication with the fifth main journal oil passage.

A system for lubricating a crankshaft of an engine, comprising:

• a first main journal, a second main journal, a third main journal, a fourth main journal, and a fifth main journal configured to rotate about a longitudinal axis;
• a first pin journal positioned between the first main journal and the fifth main journal, the first pin journal fluidly isolated from the fifth main journal;
• a second pin journal positioned between the first main journal and the second main journal, the second pin journal fluidly isolated from the second main journal;
• a third pin journal positioned between the second main journal and the third main journal, the third pin journal fluidly isolated from the third main journal;
• and
• a fourth pin journal positioned between the third main journal and the fourth main journal, the fourth pin journal fluidly isolated from the fourth main journal.