Gas-dynamic pressure wave machine with exhaust gas bypass
US4488532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B33/42
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas-dynamic pressure wave machine with an exhaust gas bypass (11) which includes a flap (12) provided in the bypass (11) which opens with higher engine speeds in order to limit the peak pressure in the internal combustion engine (9). A flap control is provided via a pressure box (14) with a process pressure, for example, exhaust gas pressure, as the controlling dimension. The process pressure is coupled with a constant pressure such as a vacuum or excess pressure for altitude compensation and temperature compensation in such a manner that the process pressure is to be raised by the same amount with a decreasing atmospheric pressure. For this purpose, the pressure box (14) is divided into first and second separate chambers (16, 17) by means of a diaphragm (15) and the process pressure acts on the first chamber while the second chamber is maintained under a constant pressure. The diaphragm (15) acts on the flap (12) through a plurality of rods (19-23).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.