Global patent index - EP 1082534 A1

EP 1082534 A1 2001-03-14 - PISTON-CYLINDER ARRANGEMENT

Title (en)

PISTON-CYLINDER ARRANGEMENT

Title (de)

KOLBEN-ZYLINDER-ANORDNUNG

Title (fr)

ENSEMBLE PISTON-CYLINDRE

Publication

EP 1082534 A1 (DE)

Application

EP 99917969 A

Priority

  • DE 19815989 A
  • DE 19815988 A
  • EP 9902400 W

Abstract (en)

[origin: WO9958839A1] The invention relates to a guide arrangement, especially for a piston-cylinder arrangement, comprising a cylinder (3) in which a bearing section of a piston (2) can be displaced axially along its inner bore (5) configured as a piston bearing surface (6) and a piston (2) to which a connecting rod can be coupled by means of a pin. At least two cylindrical and peripheral bearing sections (9a, 10a) radially delimiting the piston (2) and serving as support on the bearing surface (6) of the cylinder (3) are releasably arranged on said piston (2) by means of two parts (7, 8) of the piston (2), at least one of which penetrates a central opening of the bearing sections (9a, 10a). The forces and torques are evenly distributed on the at least two bearing sections in the axial extension of the piston (2) in such a way that the bearing sections are arranged outside the axle of the pin and at least one section (9a) of the at least two bearing sections (9a, 10a) is completely arranged on one side of the axle of the pin (20) and at least the other section (10a) of the at least two bearing sections (9a, 10a) is completely arranged on the other side of the axle of the pin (20). In addition, the bearing sections (9a, 10a) are fixed at a fixed reciprocal axial distance (11) in relation to each other. Force is transmitted from the pin to the bearing sections (9a, 10a) exclusively through the central parts (7, 8) of the piston (2). A favorable tribologic pairing is achieved in that one of the materials of the pairing bearing section (9a, 10a) guide surface (6) is chosen from the group comprising polycrystalline diamond, amorphous hydrocarbon, tetragonally coordinated hydrocarbon and metal-containing hydrocarbon and in that the other material of the pairing is selected from the group comprising mesophase graphite and ultrafine grain graphite.

IPC 1-7 (main, further and additional classification)

F02F 3/00; F16J 1/02; F16J 9/28; F16J 10/04

IPC 8 full level (invention and additional information)

F02F 3/00 (2006.01); F16J 1/02 (2006.01); F16J 9/28 (2006.01); F16J 10/04 (2006.01)

CPC (invention and additional information)

F16J 9/28 (2013.01); F02F 3/0084 (2013.01); F16J 1/02 (2013.01); F16J 10/04 (2013.01); F05C 2201/021 (2013.01); F05C 2201/0433 (2013.01); F05C 2201/0448 (2013.01); F05C 2203/0882 (2013.01)

Citation (search report)

See references of WO 9958839A1

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI SE

EPO simple patent family

WO 9958839 A1 19991118; AU 3605799 A 19991129; DE 19980856 D2 20010913; EP 1082534 A1 20010314

INPADOC legal status

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20011031

2001-03-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20010104

2001-03-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE ES FR GB IT LI SE