| (19) |
 |
|
(11) |
EP 0 947 680 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
27.10.1999 Bulletin 1999/43 |
| (43) |
Date of publication A2: |
|
06.10.1999 Bulletin 1999/40 |
| (22) |
Date of filing: 29.01.1997 |
|
| (51) |
International Patent Classification (IPC)6: F02B 71/00 |
|
| (84) |
Designated Contracting States: |
|
CH DE DK FI GB LI SE |
| (30) |
Priority: |
30.01.1996 NO 960402
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
|
97902766.1 / 0877858 |
| (71) |
Applicant: KVAERNER ASA |
|
1324 Lysaker (NO) |
|
| (72) |
Inventors: |
|
- Forde, Magnar Jarle
7562 Handhamaren (NO)
- Kvamsdal, Rolf
7041 Trondheim (NO)
|
| (74) |
Representative: HOFFMANN - EITLE |
|
Patent- und Rechtsanwälte
Arabellastrasse 4
81925 München
81925 München (DE) |
|
| |
|
|
|
Remarks: |
|
This application was filed on 06 - 07 - 1999 as a divisional application to the application
mentioned under INID code 62. |
|
| (54) |
Free-piston gas generator |
(57) Improvement in diesel free-piston gas generators with, e.g., a cylinder in which
there are provided two pistons, which are moved synchronously towards or from each
other. At the ends of the cylinder the cylinder and the pistons define a combustion
chamber which can be connected to a pipe for the supply of high-energy exhaust gas
to a consumer thereof. According to the invention, the device comprises at least one
exhaust gas valve, which is arranged in an exhaust gas port provided in the cylinder
section, which port constantly communicates with the combustion chamber. The exhaust
gas valve is operated by an activator which is controlled, e.g., by a computer which
via sensors very rapidly establishes values for operating parameters for the gas generator.
Furthermore, the cylinder portion of the buffer chamber comprises a component which
is movable relative to the rest of the cylinder portion, by means of which component
the volume of the buffer chamber is variable.