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    • 8. 发明申请
    • Cold start fuel control system
    • 冷启动燃油控制系统
    • US20050016500A1
    • 2005-01-27
    • US10624228
    • 2003-07-22
    • Jonathan BorgShigeru OhoFrank HuntAyumu Miyajima
    • Jonathan BorgShigeru OhoFrank HuntAyumu Miyajima
    • F02D37/02F02D41/02F02D41/06F02D41/36F02D41/40F02D43/00F02D45/00F02M71/04F02N99/00F02P5/15
    • F02D41/3094F02D37/02F02D41/0255F02D41/064F02D41/402F02P5/1506Y02T10/46
    • An engine startup fuel control system for use with an internal combustion engine of the type having a plurality of combustion chambers, an air intake passage fluidly connected to each combustion chamber and a source of fuel. The system includes a multipoint fuel injector associated with each combustion chamber in which the multipoint fuel injector has an inlet connected to the fuel source and an outlet fluidly connected to the intake air passageway adjacent its associated combustion chamber. A cold start fuel injector also has an inlet connected to the fuel source and an outlet connected through a cold start passageway with each combustion chamber. A processing circuit selectively activates the multipoint fuel injectors as well as the cold start fuel injector. The processing circuit determines the air/fuel mixture introduced by the cold start fuel injector into each combustion chamber during engine startup and then selectively activates the multipoint fuel injectors to achieve a predetermined air/fuel mixture in each combustion chamber during engine startup. The processing circuit also variably retards the ignition of the combustion charge within at least one of the combustion chambers to achieve faster heating of a catalytic converter. Furthermore, the cold start fuel injector is optionally activated in a plurality of spaced subpulses for each combustion charge provided to each combustion chamber.
    • 一种与具有多个燃烧室的类型的内燃机一起使用的发动机起动燃料控制系统,流体连接到每个燃烧室的进气通道和燃料源。 该系统包括与每个燃烧室相关联的多点燃料喷射器,其中多点燃料喷射器具有连接到燃料源的入口和与邻近其相关联的燃烧室流体连接到进气通道的出口。 冷启动燃料喷射器还具有连接到燃料源的入口和通过每个燃烧室的冷启动通道连接的出口。 处理电路选择性地激活多点燃料喷射器以及冷启动燃料喷射器。 处理电路在发动机启动期间确定由冷启动燃料喷射器引入到每个燃烧室中的空气/燃料混合物,然后选择性地启动多点燃料喷射器,以在发动机起动期间在每个燃烧室中实现预定的空气/燃料混合物。 处理电路还可变地阻止至少一个燃烧室内的燃烧装料的点火,以实现催化转化器的更快的加热。 此外,冷启动燃料喷射器可选地为设置到每个燃烧室的每个燃料电荷以多个间隔的子脉冲激活。