EP 3458681 A1 20190327 - FREE PISTON DEVICE
Title (en)
FREE PISTON DEVICE
Title (de)
FREIKOLBENVORRICHTUNG
Title (fr)
DISPOSITIF À PISTON LIBRE
Publication
Application
Priority
- DE 102016109046 A 20160517
- EP 2017061516 W 20170512
Abstract (en)
[origin: WO2017198578A1] The invention relates to a free piston device comprising a piston (42) which is arranged in a movable manner back and forth along an axis (26). The piston receiving area (24) comprises a combustion chamber (50) which is delimited by a wall (32). The free piston device (10) comprises a cooling device (74) which is arranged on the piston receiving area (24) for cooling the wall (32). The cooling device (74) has a cooling channel (76) which is arranged radially on the exterior of the wall (32) for a cooling medium in order to improve the cooling function, said cooling channel having a first cooling region (78) and a second cooling region (80) at axially opposite sides of an outlet opening (36). The cooling channel (76) additionally has at least one third cooling region (82) which fluidically connects the first cooling region (78) and the second cooling region (80) along the axial extension of the outlet chamber (92) and is positioned radially outside of the outlet chamber (92) at least in some sections.
IPC 8 full level
F01B 11/02 (2006.01); F01B 11/00 (2006.01); F01P 3/00 (2006.01); F01P 3/02 (2006.01); F02B 63/04 (2006.01); F02B 71/00 (2006.01)
CPC (source: EP US)
F01B 7/02 (2013.01 - US); F01B 11/007 (2013.01 - EP US); F01B 11/02 (2013.01 - EP US); F01P 3/00 (2013.01 - US); F01P 3/02 (2013.01 - EP US); F02B 71/00 (2013.01 - EP US); F02B 71/04 (2013.01 - US); F02B 75/282 (2013.01 - US); F02B 63/041 (2013.01 - EP US); F02B 2075/025 (2013.01 - US)
Citation (search report)
See references of WO 2017198578A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017198578 A1 20171123; CN 109154192 A 20190104; CN 109154192 B 20210112; DE 102016109046 A1 20171123; EP 3458681 A1 20190327; EP 3458681 B1 20210428; US 10844718 B2 20201124; US 2019085693 A1 20190321
DOCDB simple family (application)
EP 2017061516 W 20170512; CN 201780029932 A 20170512; DE 102016109046 A 20160517; EP 17723377 A 20170512; US 201816192266 A 20181115