(19)
(11) EP 3 652 283 A1

(12)

(43) Date of publication:
20.05.2020 Bulletin 2020/21

(21) Application number: 18752274.3

(22) Date of filing: 11.07.2018
(51) International Patent Classification (IPC): 
C10M 139/00(2006.01)
C10M 141/12(2006.01)
(86) International application number:
PCT/IB2018/055112
(87) International publication number:
WO 2019/012447 (17.01.2019 Gazette 2019/03)
(84) Designated Contracting States:
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 States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 14.07.2017 US 201762532426 P

(71) Applicants:
  • Chevron Oronite Company LLC
    San Ramon, CA 94583 (US)
  • Chevron Oronite Technology B.V.
    3196 KD Vondelingenplaat (NL)
  • Chevron U.S.A. Inc.
    San Ramon, California 94583 (US)

(72) Inventors:
  • ELLIOTT, Ian G.
    San Ramon, California 94583 (US)
  • HOGENDOORN, Richard
    3196 KD Rotterdam (NL)
  • GUNAWAN, Theresa Liang
    San Ramon, California 94583 (US)
  • TSANG, Man Hon
    San Ramon, California 94583 (US)
  • CHERPECK, Richard E.
    San Ramon, California 94583 (US)
  • MARIA, Amir Gamal
    San Ramon, California 94583 (US)
  • THOMAS, Andrew Michael
    San Ramon, California 94583 (US)

(74) Representative: Haseltine Lake Kempner LLP 
Redcliff Quay 120 Redcliff Street
Bristol BS1 6HU
Bristol BS1 6HU (GB)

   


(54) LUBRICATING OIL COMPOSITIONS CONTAINING ZIRCONIUM AND METHOD FOR PREVENTING OR REDUCING LOW SPEED PRE-IGNITION IN DIRECT INJECTED SPARK-IGNITED ENGINES