Cylinder block structure
US7077095B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Dec 24, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F7/0007
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cylinder block structure with a small number of ribs is provided which can favorably prevent the deformation of a crankshaft bearing portion. In a cylinder block having bolt holes formed on the upper surface for connecting a cylinder head with bolts, arcshaped coupling surfaces formed on the rear end surface for mounting a housing, such as a transmission housing, and a crankshaft bearing portion formed in the central part between the lower ends of the coupling surfaces, the upper parts of the coupling surfaces 5 are joined into an arch-shape by an arch-shaped rib, the lower ends of right and left bosses are extended and connected to the lower parts of the arch-shaped rib, and right and left main radial ribs extend from the outside of the lower end of the bolt hole boss to the center of the crankshaft bearing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.