Cylinder block for an internal combustion engine
US5474040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2001/106
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cylinder block for an internal combustion engine includes a bolt boss located between cylinders, the bolt boss being connected to a common wall portion of a siamese bore wall structure by a double bridge structure including a lower bridge and an upper bridge located above the lower bridge. Since a composite moment E.sub.0 acting on the bolt boss during the tightening of a head bolt is directed in a plane including the common wall portion, the composite moment can be born by the common wall portion which has a very large rigidity in a direction perpendicular to the row of cylinder bores. As a result, deformation of the bolt boss is suppressed, and deformation of the cylinder bore and inclination of the top deck are also effectively suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.