Title:
往復動ピストン装置、特に、内燃機関の滑り軸受監視方法及び装置
Document Type and Number:
Japanese Patent JP4261776
Kind Code:
B2
Abstract:
A reciprocating piston machine, especially an internal combustion engine, comprises at least one cylinder (Z1, Z2, Z3) having a displaceable piston (13) that is connected to a crankshaft (1) via a connecting rod (9). A thermocurrent (I) is generated when a lubricating film (5) is broken between bearing parts which move relative to one another and which are comprised of different electrically conductive materials, and is generated due to a temperature gradient on such a plain bearing (2a, 10, 11). The thermocurrent (I) is used as a control signal in a control device (14). In order to differentiate between different plain bearings (2, 10, 11) and/or bearing states, the curve of this generated thermocurrent (I) is composed by enlarging and spreading according to the angle of rotation of the crankshaft (1), and the curve obtained is interrogated during a complete operating cycle in order to determine significant symptoms of the plain bearings.
Inventors:
David, Steadham
Application Number:
JP2000613927A
Publication Date:
April 30, 2009
Filing Date:
March 24, 2000
Export Citation:
Assignee:
Electrical Engineering Company, Limited
International Classes:
G01M99/00; F01M1/16; F01M11/10; F02D45/00; F16C3/14; F16C17/24; F16N29/04; G01M13/04
Domestic Patent References:
| JP60109699A |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Koichi Fujii
Kojiro Yoda
Arihara Koichi
Matsushima Tetsuo
Koichi Fujii
Kojiro Yoda