Global Patent Index - EP 1051467 A1

EP 1051467 A1 2000-11-15 - MARINE LUBRICANT FOR TWO-STROKE ENGINE

Title (en)

MARINE LUBRICANT FOR TWO-STROKE ENGINE

Title (de)

SCHMIERMITTEL FÜR SCHIFFSZWEITAKTMOTOREN

Title (fr)

LUBRIFIANT MARIN POUR MOTEUR DEUX TEMPS

Publication

EP 1051467 A1 (FR)

Application

EP 99901656 A

Priority

  • FR 9900181 W
  • FR 9801127 A

Abstract (en)

[origin: FR2774387A1] The invention concerns a lubricant for a two-stroke slow speed crosshead marine engine, powered with a fuel with sulphur content not less than 1 %, consisting of a mixture of distillates used as lubricating bases containing x wt.% of dispersing additive of the succinimide type, y wt.% of an overbased detergent additive of the sulphonate type, and z wt.% of an overbased detergent additive of the phenate type. The invention is characterised in that x, y and z are selected in the intervals 0.5</=x</=2.5, 3.5</=y</=10 and 11</=z</=24.5 such that 15</=x+y+z</=36 and 1.5</=y/x</=13, the BN of the lubricant, determined according to the ASTM D-2896 standard, is not less than 70 mg KOH/g, and the speed at which sulphuric acid is neutralised by the lubricant, defined by the maximum speed of pressure increase of a closed chamber, with its walls covered with a film of said lubricant from 80 to 100 mu m thick, maintained at 100 DEG C, wherein is introduced a known amount of sulphuric acid, has a value not less than 11 x 10 <2> Pa/s at 100 DEG C.

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

C10M 163/00

IPC 8 full level (invention and additional information)

C10M 163/00 (2006.01); C10N 30/04 (2006.01); C10N 40/26 (2006.01); C10N 60/14 (2006.01)

CPC (invention and additional information)

C10M 163/00 (2013.01); C10M 2207/28 (2013.01); C10M 2215/28 (2013.01); C10M 2219/046 (2013.01); C10M 2219/089 (2013.01); C10N 2230/12 (2013.01); C10N 2240/105 (2013.01)

Citation (search report)

See references of WO 9938940A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2774387 A1 19990806; FR 2774387 B1 20001201; AT 222943 T 20020915; CA 2320332 A1 19990805; DE 69902631 D1 20021002; DE 69902631 T2 20030410; DK 1051467 T3 20030106; EP 1051467 A1 20001115; EP 1051467 B1 20020828; ES 2179614 T3 20030116; JP 2002501974 A 20020122; PT 1051467 E 20030131; US 6528459 B1 20030304; WO 9938940 A1 19990805

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