Importance

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Abstract

In an internal combustion engine, a large volume of lubricant is desirable to increase service intervals and thus reduce maintenance costs. Large lubricant volumes typically require an undesirable increase in engine size. A cylinder block assembly for an internal combustion engine in accordance with this invention comprises a cylinder block, a primary lubricant reservoir or sump below the cylinder block, and a secondary lubricant reservoir at a side of the cylinder block. The secondary lubricant reservoir may be formed as a pannier oil tank by sealably attaching an apron to a side of the cylinder block. A fluid passage extending between the secondary lubricant reservoir and the primary lubricant reservoir is closeable by a valve and is adapted to permit lubricant flow from the secondary lubricant reservoir to the primary lubricant reservoir when open. The secondary lubricant reservoir increases the oil capacity of the cylinder block.

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First Claim