LUBRICANT COMPOSITIONS FOR DIRECT INJECTION ENGINES

    公开(公告)号:CA2924893A1

    公开(公告)日:2015-03-26

    申请号:CA2924893

    申请日:2014-09-19

    Applicant: LUBRIZOL CORP

    Abstract: ABSTRACT The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and a metal overbased detergent. The metal overbased detergent may be selected from sulfonate detergents, phenate detergents, and salicylate detergents, especially sulfonate detergents with a metal ratio of at least 5. Date Recue/Date Received 2021-05-21

    LUBRICATING COMPOSITION CONTAINING A SALT OF A CARBOXYLIC ACID

    公开(公告)号:CA2836598A1

    公开(公告)日:2012-12-20

    申请号:CA2836598

    申请日:2012-06-14

    Applicant: LUBRIZOL CORP

    Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity and an amine or ammonia salt of a carboxylic acid compound where said carboxylic acid is characterized in that it is functionalized with a hydroxy-substituted aromatic moiety. The invention further relates to methods of lubricating an internal combustion engine by supplying the described lubricating composition to the internal combustion engine. The invention further relates to the use of the salt of the carboxylic acid compound as an antiwear agent or an antioxidant.

    STABILIZED BLENDS CONTAINING FRICTION MODIFIERS

    公开(公告)号:CA2834701A1

    公开(公告)日:2012-11-29

    申请号:CA2834701

    申请日:2012-05-21

    Applicant: LUBRIZOL CORP

    Abstract: The present invention relates to functional fluid compositions containing friction modifiers, and specifically stable compositions containing friction modifiers with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and friction modifiers derived from hydroxy-carboxylic acids, where the friction modifier is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.

    LUBRICATING COMPOSITION CONTAINING A DISPERSANT

    公开(公告)号:CA2799740A1

    公开(公告)日:2011-11-24

    申请号:CA2799740

    申请日:2011-05-19

    Applicant: LUBRIZOL CORP

    Abstract: The invention provides a lubricating composition containing a copolymer comprising units derived from monomers (i) a-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified and amidated with an alcohol and an aromatic amine respectively, and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine.

Patent Agency Ranking