Fuel oil composition
    25.
    发明授权
    Fuel oil composition 失效
    燃油组成

    公开(公告)号:US06733550B1

    公开(公告)日:2004-05-11

    申请号:US09040911

    申请日:1998-03-18

    Abstract: The invention provides a fuel oil composition comprising a major proportion of liquid hydrocarbon middle distillate fuel oil having a sulphur concentration of at most 0.05% by weight, and a minor proportion of a dispersant additive obtained by reacting, in a molar ratio A:B in the range 4:3 to 1:10, (A) a polyalkenyl derivative of monoethylenically unsaturated C4-C10 dicarboxylic acid material in which the number average molecular weight (Mn) of the polyalkenyl chain is in the range from 850 to 1150 with (B) a polyamine of general formula H2N(CH2)m—[NH(CH2)m]n—NH2  (1) where m is in the range from 2 to 4 and n is in the range from 1 to 6; a process for the preparation of such a fuel composition, and a method of operation a compression-ignition engine with enhance injector cleanliness using such a fuel oil composition.

    Abstract translation: 本发明提供了一种燃料油组合物,其包含硫浓度为至多0.05重量%的液体烃中间馏分燃料油的主要比例,以及少量的分散剂添加剂,其通过使A:B的摩尔比 范围4:3至1:10,(A)单烯属不饱和C4-C10二羧酸材料的聚链烯基衍生物,其中聚链烯基链的数均分子量(Mn)在850至1150的范围内,与(B )一般形式的多胺m在2至4的范围内,n在1至6的范围内; 用于制备这种燃料组合物的方法,以及使用这种燃料油组合物来操作具有增强的喷射器清洁度的压燃式发动机的方法。

    Method for controlling engine deposits in a direct injection spark ignition gasoline engine
    26.
    发明授权
    Method for controlling engine deposits in a direct injection spark ignition gasoline engine 有权
    用于控制直喷火花点火汽油发动机中的发动机沉积物的方法

    公开(公告)号:US06475251B1

    公开(公告)日:2002-11-05

    申请号:US09796876

    申请日:2001-02-28

    Inventor: Majid R. Ahmadi

    CPC classification number: C10L1/238 C10L1/146 C10L1/198 C10L1/2387 C10L10/04

    Abstract: A method for controlling engine deposits in a direct injection spark ignition gasoline engine which comprises operating the engine with a fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and an effective deposit-controlling amount of a fuel additive composition comprising: (a) an aromatic ester compound of the formula: or a fuel soluble salt thereof, wherein R is hydroxy, nitro or —(CH2)x—NR5R6, wherein R5 and R6 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms and x is 0 or 1; R1 is hydrogen, hydroxy, nitro or —NR7R8, wherein R7 and R8 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R2 and R3 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; and R4 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000; and (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline range.

    Abstract translation: 一种用于控制直喷式火花点火汽油发动机中的发动机沉积物的方法,其包括用包含在汽油范围内沸腾的主要量的烃的燃料组合物和有效的沉积物控制量的燃料添加剂组合物来操作发动机,所述燃料组合物包含:(a )下式的芳族酯化合物或其燃料可溶性盐,其中R是羟基,硝基或 - (CH 2)x -NR 5 R 6,其中R 5和R 6独立地是氢或具有1至6个碳原子的低级烷基,x是 0或1; R 1是氢,羟基,硝基或-NR 7 R 8,其中R 7和R 8独立地是氢或具有1至6个碳原子的低级烷基; R2和R3独立地是氢或具有1-6个碳原子的低级烷基; 并且R 4是平均分子量在约450至5,000范围内的聚烷基; 和(b)具有至少一个碱性氮原子和足够数量的氧化烯单元的聚(氧化烯)胺,以使聚(氧化烯)胺可溶于在汽油范围内沸腾的烃。

    Fuel oil compositions
    28.
    发明授权
    Fuel oil compositions 失效
    燃油组成

    公开(公告)号:US06402797B1

    公开(公告)日:2002-06-11

    申请号:US09298578

    申请日:1999-07-28

    Abstract: This invention provides a fuel oil composition comprising a major amount of a fuel oil and a minor amount of an additive comprising at least one fuel oil-soluble alkyl or alkoxy aromatic compound wherein at last one group independently selected from alkyl and alkoxy groups of 1 to 30 carbon atoms is attached to an aromatic nucleus and at least one carboxyl group and optionally one or two hydroxyl groups are attached to the aromatic nucleus; a process for the preparation of such a fuel oil composition; and the use of such a fuel oil composition as fuel in a compression-ignition engine for controlling wear rate in the fuel injection system thereof.

    Abstract translation: 本发明提供一种燃料油组合物,其包含主要量的燃料油和少量的包含至少一种燃料油溶性烷基或烷氧基芳族化合物的添加剂,其中最后一个独立地选自烷基和烷氧基的基团为1〜 30个碳原子连接到芳香核,并且至少一个羧基和任选的一个或两个羟基连接到芳香核; 制备这种燃料油组合物的方法; 以及在压燃式发动机中使用这种燃料油组合物作为燃料的燃料喷射系统中的磨损率。

Patent Agency Ranking