Oil-cooled cylinder block with water-cooled bridge
AssigneeFord Global Technologies, LLC
InventorsRick L. Williams, Joseph Norman Ulrey
Life of this patent
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Abstract
Systems are provided to providing water to the bore bridges of a cylinder block that contains an oil cooling system. An oil-cooled cylinder block may be desirable to aid in rapidly increasing engine temperature during engine warm-up, but high local temperatures may exist in the bore bridges in between adjacent cylinders, thereby leading to adverse performance. To control the high local temperatures while maintaining rapid engine warm-up, systems are proposed to provide water coolant from the cylinder head into cross-drilled passages located in the bore bridges of the cylinder block while cooling the rest of the cylinder block with oil or a different coolant.
Claims6
A system, comprising:
- a cylinder head with a water cooling passage;
- and
- an oil-cooled cylinder block coupled to the cylinder head and having an oil passage that does not fluidly connect to the cylinder head, the water cooling passage traversing a bore bridge positioned between a first cylinder and a second cylinder and passing into the cylinder block and then back into the cylinder head, the water cooling passage including an inlet and an outlet located along a surface of the oil-cooled cylinder block, the inlet and outlet positioned between oil passages located along the surface, the surface contacting the cylinder head.
Dependencies are inferred from the claim text.