Balance shaft gear carrier drive

An engine drive assembly comprising:

• a camshaft gear;
• a first idler rear engaged with the camshaft gear;
• a crankshaft gear engaged with the first idler gear;
• a second idler gear assembly engaged with the crankshaft gear;
• and
• a balance shaft gear engaged with the second idler gear;
• wherein the crankshaft gear drives the camshaft gear via the first idler gear and the crankshaft gear drives the balance shaft gear via the second idler gear assembly, wherein the camshaft gear, first idler gear, crankshaft gear, second idler gear assembly, and balance shaft gear are supported with a balance shaft housing, the balance shaft housing including a balance shaft housing centerline, and wherein the camshaft gear, first idler gear, crankshaft gear, and balance shaft gear are each disposed along the balance shaft housing centerline.

A balance shaft gear carrier drive including:

• a balance shaft housing;
• a camshaft gear supported by the balance shaft housing;
• a first idler gear engaged with the camshaft gear;
• a crankshaft gear engaged with the first idler gear, the crankshaft gear supported by the balance shaft housing;
• a balance shaft gear;
• and
• a second idler gear assembly, the second idler gear assembly including a crankshaft idler gear engaged with a balance shaft idler gear, the crankshaft idler gear engaged with the crankshaft gear and the balance shaft idler gear engaged with the balance shaft gear;
• wherein the crankshaft gear drives the camshaft gear via the first idler gear and the crankshaft gear drives the balance shaft gear via the second idler gear assembly;
• and wherein the crankshaft idler gear includes a crankshaft idler gear centerline and the balance shaft idler gear includes a balance shaft idler gear centerline, the crankshaft idler gear centerline and balance shaft idler gear centerline disposed along a block centerline.

A balance shaft gear carrier drive, including:

• a balance shaft housing;
• a camshaft sear supported by the balance shaft housing;
• a first idler gear engaged with the camshaft gear;
• a crankshaft gear engaged with the first idler gear, the crankshaft gear supported by the balance shaft housing;
• a balance shaft gear;
• and
• a second idler gear assembly, the second idler gear assembly including a crankshaft idler gear engaged with a balance shaft idler gear, the crankshaft idler gear engaged with the crankshaft gear and the balance shaft idler gear engaged with the balance shaft gear;
• wherein the crankshaft gear drives the camshaft gear via the first idler gear and the crankshaft gear drives the balance shaft gear via the second idler gear assembly;
• and wherein the crankshaft idler gear includes a crankshaft idler gear centerline and the balance shaft idler gear includes a balance shaft idler gear centerline, the crankshaft idler gear centerline and balance shaft idler gear centerline not disposed along a block centerline.