SYSTEM AND METHOD FOR PURGING FUEL FROM A FUEL INJECTOR DURING START-UP

    公开(公告)号:WO2004092570A3

    公开(公告)日:2004-10-28

    申请号:PCT/US2004/011345

    申请日:2004-04-09

    Abstract: A fuel system for use in an internal combustion engine includes a plurality of fuel injectors, each injector including at least one capillary flow passage, the at least one capillary flow passage having an inlet end and an outlet end, a heat source arranged along the at least one capillary flow passage, the heat source operable to heat a liquid fuel in the at least one capillary flow passage to a level sufficient to convert at least a portion thereof from the liquid state to a vapor state, and a valve for metering fuel to the internal combustion engine, a controller to control the power supplied to the heat source of each of the plurality of fuel injectors to achieve a predetermined target temperature, a sensor for use in determining engine air flow and a sensor for measuring a value indicative of degree of engine warm-up of the internal combustion engine. According to a further aspect of the present invention, an initial liquid fuel pulse is purged from the fuel injector while the intake valve is in a substantially closed position so as to further minimize hydrocarbon emissions at startup.

    CONTROL METHOD AND APPARATUS FOR USE IN AN ALCOHOL FUELED INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    CONTROL METHOD AND APPARATUS FOR USE IN AN ALCOHOL FUELED INTERNAL COMBUSTION ENGINE 审中-公开
    用于酒精燃料内燃机的控制方法和装置

    公开(公告)号:WO2005042965A1

    公开(公告)日:2005-05-12

    申请号:PCT/US2004/036281

    申请日:2004-10-29

    Abstract: A method for controlling a fuel system of an internal combustion engine (810). The method is employed with a fuel system having a source (710) of alcohol-containing liquid fuel, at least one fuel injector (900), a heat source for heating the liquid fuel in the at least one fuel injector (900), the heat source capable of heating the liquid fuel to a level sufficient to convert at least a portion thereof from the liquid state to a vapor state and a metering valve operable to achieve a range of flow rates characterized by a valve open versus valve closed duty cycle. The method includes the steps of metering a predetermined amount of fuel based on engine operating conditions, controlling power supplied to the heat source of the at least one fuel injector (900) to achieve a target temperature, determining alcohol concentration of the fuel and adjusting the power supplied to the heat source of the at least one fuel injector based on the alcohol concentration determination. A method of determining alcohol concentration and a fuel system for use in an alcohol fueled internal combustion engine is also provided.

    Abstract translation: 一种用于控制内燃机(810)的燃料系统的方法。 该方法与具有含醇液体燃料源(710)的燃料系统一起使用,至少一个燃料喷射器(900),用于加热至少一个燃料喷射器(900)中的液体燃料的热源, 热源,其能够将液体燃料加热到足以将其至少一部分从液态转化为蒸汽状态的水平,以及计量阀,其可操作以实现以阀打开与阀关闭占空比为特征的一定范围的流量。 该方法包括以下步骤:基于发动机操作条件计量预定量的燃料,控制供应至少一个燃料喷射器(900)的热源的功率,以达到目标温度,确定燃料的酒精浓度并调节 基于醇浓度测定,供给到至少一个燃料喷射器的热源的功率。 还提供了一种确定酒精浓度的方法和用于醇燃料内燃机的燃料系统。

    FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    燃油喷射器内燃机

    公开(公告)号:WO2003083281A1

    公开(公告)日:2003-10-09

    申请号:PCT/US2003/009128

    申请日:2003-03-24

    Abstract: A fuel injector for vaporizing a liquid fuel for use in an internal combustion engine. The fuel injector includes at least one capillary flow passage (12) , the at least one capillary flow passage (12) having an inlet end (14) and an outlet end (16), the capillary flow passage comprises a channel formed within a monolithic body produced from a material selected from the group consisting of ceramics, polymers, metals and composites thereof or a multi-layer ceramic body, a fluid control valve (18) for placing the inlet end of the at least one capillary flow passage (12) in fluid communication with the liquid fuel source and introducing the liquid fuel in a substantially liquid state, a heat source (20) arranged along the at least one capillary flow passage, the heat source (20) operable to heat the liquid fuel in the at least one capillary flow passage (12) to a level sufficient to change at least a portion thereof from the liquid state to a vapor state and deliver a stream of substantially vaporized fuel from the outlet end of the at least one capillary flow passage.

    Abstract translation: 一种用于汽化用于内燃机的液体燃料的燃料喷射器。 燃料喷射器包括至少一个毛细管流动通道(12),所述至少一个毛细管流动通道(12)具有入口端(14)和出口端(16),所述毛细管流动通道包括形成在整体式 由选自陶瓷,聚合物,金属及其复合物或多层陶瓷体的材料制成的主体,用于放置至少一个毛细管流动通道(12)的入口端的流体控制阀(18) 与所述液体燃料源流体连通并且以基本上液态的方式引入所述液体燃料,所述热源(20)沿着所述至少一个毛细管流动通道布置,所述热源(20)可操作以加热所述液体燃料 至少一个毛细管流动通道(12)至足以将其至少一部分从液体状态改变到蒸汽状态的水平,并从所述至少一个毛细管流动通道的出口端输送基本上蒸发的燃料流。

    DIRECT INJECTION GASEOUS FUEL ENGINE WITH IGNITION ASSIST
    6.
    发明申请
    DIRECT INJECTION GASEOUS FUEL ENGINE WITH IGNITION ASSIST 审中-公开
    直喷喷枪燃油发动机

    公开(公告)号:WO2004046520A1

    公开(公告)日:2004-06-03

    申请号:PCT/CA2003/001723

    申请日:2003-11-07

    Abstract: An internal combustion engine and a method of operating same is provided with direct injection of gaseous fuel into a combustion chamber and an ignition assist apparatus disposed within the combustion chamber. An ignition assist apparatus disposed within the combustion chamber comprises an electric incandescent ignitor with a sleeve disposed around the ignitor and a catalytic alloy. The catalytic alloy comprises a first catalytic element with a greater affinity for oxygen than that of a second catalytic element, and the second catalytic element having a greater affinity for the fuel than that of the first catalytic element.

    Abstract translation: 提供内燃机及其操作方法,其中将气体燃料直接喷射到设置在燃烧室内的燃烧室和点火辅助装置中。 设置在燃烧室内的点火辅助装置包括具有布置在点火器周围的套筒的电白炽点火器和催化合金。 催化合金包含对氧的亲和性高于第二催化元素的第一催化元素,第二催化元素比第一催化元素对燃料具有更大的亲和力。

    MULTIPLE CAPILLARY FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    MULTIPLE CAPILLARY FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    用于内燃机的多毛细管燃油喷射器

    公开(公告)号:WO2005042964A1

    公开(公告)日:2005-05-12

    申请号:PCT/US2004/036130

    申请日:2004-10-29

    CPC classification number: F02M53/06 F02M51/0639

    Abstract: A fuel injector for vaporizing a liquid fuel for use in an internal combustion engine. The fuel injector includes a plurality of capillary flow passages, each of the plurality of capillary flow passages having an inlet end and an outlet end; a heat source arranged along each of the plurality of capillary flow passages, the heat source operable to heat the liquid fuel in each of the plurality of capillary flow passages to a level sufficient to change at least a portion thereof from the liquid state to a vapor state and deliver a stream of substantially vaporized fuel from each outlet end of the plurality of capillary flow passages; and a valve for metering substantially vaporized fuel to the internal combustion engine, the valve located downstream of each outlet end of the plurality of capillary flow passages. The fuel injector is effective in reducing cold-start and warm-up emissions of an internal combustion engine.

    Abstract translation: 一种用于汽化用于内燃机的液体燃料的燃料喷射器。 燃料喷射器包括多个毛细管流动通道,多个毛细管流动通道中的每一个具有入口端和出口端; 沿着所述多个毛细管流动通道中的每一个布置的热源,所述热源可操作以将所述多个毛细管流动通道中的每一个中的液体燃料加热至足以将其至少一部分从液体状态改变为蒸气的水平 并且从多个毛细管流动通道的每个出口端输送基本上蒸发的燃料流; 以及用于向内燃机计量基本上蒸发的燃料的阀,该阀位于多个毛细管流动通道的每个出口端的下游。 燃油喷射器有效地减少内燃机的冷启动和预热排放。

Patent Agency Ranking