GB889509A - Improvements in or relating to a free piston engine - Google Patents
Improvements in or relating to a free piston engineInfo
- Publication number
- GB889509A GB889509A GB40756/58A GB4075658A GB889509A GB 889509 A GB889509 A GB 889509A GB 40756/58 A GB40756/58 A GB 40756/58A GB 4075658 A GB4075658 A GB 4075658A GB 889509 A GB889509 A GB 889509A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pistons
- piston
- cylinder
- cushion
- cylinders
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B71/00—Free-piston engines; Engines without rotary main shaft
- F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
- F02B71/06—Free-piston combustion gas generators per se
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
889,509. Free piston compressors and gas generators. BURION, E. P. Dec. 17, 1958 [Dec. 20, 1957], No. 40756/58. Classes 7(1) and 7(2). A free piston engine comprises two similar movable assemblies displaceable in opposition and each including two motor pistons associated with a compressor piston which is provided with at least one jacket delimiting a cylinder for a fixed piston, the fixed piston serving to enclose a charge of gas in the cylinder to thus form a power accumulator in which the gas is compressed during a driving stroke so that the movable assemblies are brought towards each other after the driving stroke which latter occurs during combustion in two parallel motor cylinders enclosing the motor pistons of the two movable assemblies. As shown the two cylinders 5 and 6 communicate with each other at their middle part via a chamber 11 into which an injector 12 injects. Injection by the injectors 13, 14 occurs primarily and injection into the chamber 11 by the injector 12 occurs later. The injector 12 may be omitted. The fuel pump may be worked off the synchronizing mechanism. A by-pass from the fuel pump cylinder may be regulated according to the compression pressure of the engine. The left hand piston assembly comprises two driving pistons 35, 36 and a compressor piston 37. The piston 37 comprises cushion cylinders 38, 39. The right hand piston assembly is similar to the left hand assembly. The pistons 35, 36a may be slightly longer than the pistons 36, 35a so that the scavenging ports 7, 7a are slightly closed before the closing of the exhaust ports 8, 8a. The scavenging ports may be nearer the piston than the exhaust ports. The pistons 35 and 36a can be of slightly different lengths to improve scavenging in the chamber 11. The cushion pistons may be mounted as shown in Fig. 1 or rigidly mounted (Fig. 5). In Fig. 5 the interior of the pistons is air-cooled. The amount of return power of the cushion cylinders may be varied by known means. As shown in Fig. 3, the synchronizing mechanism may comprise a rack 48 which is integral with the cushion cylinder 39. Alternatively the synchronizing mechanism may comprise a system of connecting rods and cranks.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR889509X | 1957-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB889509A true GB889509A (en) | 1962-02-14 |
Family
ID=9377161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40756/58A Expired GB889509A (en) | 1957-12-20 | 1958-12-17 | Improvements in or relating to a free piston engine |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB889509A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500804A (en) * | 1968-12-16 | 1970-03-17 | Anton Braun | Free piston engine |
WO2017198578A1 (en) * | 2016-05-17 | 2017-11-23 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free piston device |
US10605081B2 (en) | 2016-05-17 | 2020-03-31 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free-piston device and method for operating a free-piston device |
US10612380B2 (en) | 2016-05-17 | 2020-04-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free piston device and method for operating a free piston device |
US10890070B2 (en) | 2016-05-17 | 2021-01-12 | DEUTSCHES ZENTRUM FüR LUFT-UND RAUMFAHRT E.V. | Free piston device |
-
1958
- 1958-12-17 GB GB40756/58A patent/GB889509A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500804A (en) * | 1968-12-16 | 1970-03-17 | Anton Braun | Free piston engine |
WO2017198578A1 (en) * | 2016-05-17 | 2017-11-23 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free piston device |
US10605081B2 (en) | 2016-05-17 | 2020-03-31 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free-piston device and method for operating a free-piston device |
US10612380B2 (en) | 2016-05-17 | 2020-04-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Free piston device and method for operating a free piston device |
US10844718B2 (en) | 2016-05-17 | 2020-11-24 | DEUTSCHES ZENTRUM FüR LUFT-UND RAUMFAHRT E.V. | Free piston apparatus |
US10890070B2 (en) | 2016-05-17 | 2021-01-12 | DEUTSCHES ZENTRUM FüR LUFT-UND RAUMFAHRT E.V. | Free piston device |
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