Internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsDarren J. Grennall, John Rowley, Paul N. Turner, Derek Banks, Mark Fowler, Mark Danby
Life of this patent
Estimating the term…
Abstract
A cylinder block for an internal combustion engine which, in use, supports a rotary crankshaft 40, the block having pairs of opposed lock width surfaces 37 formed thereon for forming an interference fit with respective co-operating lock width surfaces 38 on the crankshaft bearing caps 34 which in use are secured to respective bearing cap support surfaces 36 also formed on the block 31. The lock width surfaces 37, 38 are spaced from the respective bearing cap support surfaces 36 so as to improve stress cracking resistance of the block 31.
Claims10
A cylinder block for an internal combustion engine adapted to support a rotary crankshaft, comprising:
- bearing cap support surfaces formed on the block;
- crankshaft bearing caps adapted to be securable to said bearing cap support surfaces formed on the block, said crankshaft bearing caps having lock width surfaces;
- and
- pairs of opposed lock width surfaces formed on the block, said opposed lock width surfaces forming an interference fit with said lock width surfaces on said crankshaft bearing caps, wherein said lock width surfaces are spaced from the respective bearing cap support surfaces such that portions of the lock width surfaces are adapted to align with the apex of the crankshaft bearing cavity in the bearing cap.
Dependencies are inferred from the claim text.