Cylinder block manufacturing method for multi-cylinder engine
US8104175B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jun 7, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4927
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a cylinder block for a multi-cylinder engine is disclosed herein. The cylinder block includes a crankcase and cylinder bores disposed therein separated by cylinder walls. The crankcase is adapted to receive a crankshaft and includes crank chambers disposed therein separated by partition walls. Each of the crank chambers of the crankcase corresponds to one of the cylinder bores of the cylinder block. The cylinder bore side of each partition wall has a honing runoff portion thinner in section than the crankshaft side thereof such that a step face results in the partition walls. Further, a runoff groove is formed in the partition walls of the crank chambers, and also a communication hole is formed at least partially within the runoff groove in at least one of the partition walls to enable communication between crank chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.