Method and device for ensuring the safety in a free piston machine
US4142485A · kind A · utility
Inventors
Key dates
| Filing date | Oct 27, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Oct 27, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S60/91
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to the safety against shocks in a free piston machine. The engine section of a unit operating according to the Diesel cycle and air-cooled runs the risk of supplying an important amount of energy to the piston, so that the latter might knock against the cover of the bounce cylinder or chamber. The constructional elements (stroke and diameters) of the machine are calculated in a manner such that their ratios cause, as a result of expansion, the ignition to stop before the dead point on the bounce section side (curve 12) knocks against the cylinder. Application: compressor with 2-stroke Diesel engine, having a one-piece movable member, and air-cooled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.