Global Patent Index - EP 2171212 B1

EP 2171212 B1 20120502 - ROTARY PISTON ENGINE

Title (en)

ROTARY PISTON ENGINE

Title (de)

KREISKOLBENMOTOR

Title (fr)

MOTEUR À PISTONS ROTATIFS

Publication

EP 2171212 B1 (DE)

Application

EP 08785918 A

Priority

  • EP 2008058659 W
  • AT 4542007 U

Abstract (en)

[origin: WO2009013110A1] The invention relates to a rotary piston engine (1), comprising engine shafts (2, 3) which are mounted in an engine housing (4) and which are rotatable about two rotational axes (14, 15) and which drive a drive shaft (13), wherein in each case one compressor piston (7a, 7b) and one working piston (8a, 8b) is mounted so as to be rotatable about each of the rotational axes (14, 15), wherein the compressor pistons (7a, 7b) and working pistons (8a, 8b) are substantially ring-shaped and wherein the compressor piston tracks (11a, 11b) and the working piston tracks (12a, 12b) are ring-shaped grooves. In order to obtain a high level of compression efficiency and engine efficiency, in each case one sealing edge (63) is provided on the piston heads (34), wherein the curvature of the piston heads (34) corresponds to the profile of a rolling curve which cuts the sealing edge (63) of a compressor/working piston (7a, 7b, 8a, 8b) in the track intersection region (62, 62') out of the cross section of the counterrotating compressor/working piston (7a, 7b, 8a, 8b), and wherein the sealing edge (63) of the one compressor/working piston continuously scrapes, as it passes the track intersection region (62, 62'), against the piston head (34) of the respectively opposite compressor/working piston.

IPC 8 full level

F01C 1/12 (2006.01); F01C 21/10 (2006.01); F01C 21/18 (2006.01)

CPC (source: EP)

F01C 1/12 (2013.01); F01C 1/123 (2013.01); F01C 11/002 (2013.01); F01C 21/10 (2013.01); F01C 21/18 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

AT 10063 U1 20080815; AT 556194 T 20120515; EP 2171212 A1 20100407; EP 2171212 B1 20120502; WO 2009013110 A1 20090129

DOCDB simple family (application)

AT 4542007 U 20070720; AT 08785918 T 20080704; EP 08785918 A 20080704; EP 2008058659 W 20080704