公开(公告)号：EP1500807A3

公开(公告)日：2006-11-29

申请号：EP04017353.6

申请日：2004-07-22

申请人： Hitachi, Ltd.

发明人： Borg, Jonathan ,  Oho, Shigeru ,  Hunt, Frank Warren ,  Miyajima, Ayumu

IPC分类号： F02D41/06 ,  F02D41/30 ,  F02N17/00

CPC分类号： F02D41/3094 ,  F02D37/02 ,  F02D41/0255 ,  F02D41/064 ,  F02D41/402 ,  F02P5/1506 ,  Y02T10/46

摘要： The invention relates to an engine startup fuel control system for use with an internal combustion engine (20) of the type having a plurality of combustion chambers (30), an air intake passage (34) fluidly connected to each combustion chamber (30) and a source of fuel (44). The system includes a multipoint fuel injector (42) associated with each combustion chamber (30) in which the multipoint fuel injector (42) has an inlet connected to the fuel source (44) and an outlet fluidly connected to the intake air passageway (34) adjacent its associated combustion chamber (30). A cold start fuel injector (60) also has an inlet (62) connected to the fuel source (44) and an outlet (64) connected through a cold start passageway (68) with each combustion chamber (30). A processing circuit (48) selectively activates the multipoint fuel injectors (42) as well as the cold start fuel injector (60). The processing circuit (48) determines the air/fuel mixture introduced by the cold start fuel injector (60) into each combustion chamber (30) during engine startup and then selectively activates the multipoint fuel injectors (42) to achieve a predetermined air/fuel mixture in each combustion chamber (30) during engine startup. The processing circuit (48) also variably retards the ignition of the combustion charge within at least one of the combustion chambers (30) to achieve faster heating of a catalytic converter. Furthermore, the cold start fuel injector (60) is optionally activated in a plurality of spaced sub-pulses (112) for each combustion charge provided to each combustion chamber (30).

公开(公告)号：EP1500807A2

公开(公告)日：2005-01-26

申请号：EP04017353.6

申请日：2004-07-22

申请人： Hitachi, Ltd.

发明人： Borg, Jonathan ,  Oho, Shigeru ,  Hunt, Frank Warren ,  Miyajima, Ayumu

IPC分类号： F02D41/06 ,  F02D41/30 ,  F02N17/00

CPC分类号： F02D41/3094 ,  F02D37/02 ,  F02D41/0255 ,  F02D41/064 ,  F02D41/402 ,  F02P5/1506 ,  Y02T10/46

摘要： The invention relates to an engine startup fuel control system for use with an internal combustion engine (20) of the type having a plurality of combustion chambers (30), an air intake passage (34) fluidly connected to each combustion chamber (30) and a source of fuel (44). The system includes a multipoint fuel injector (42) associated with each combustion chamber (30) in which the multipoint fuel injector (42) has an inlet connected to the fuel source (44) and an outlet fluidly connected to the intake air passageway (34) adjacent its associated combustion chamber (30). A cold start fuel injector (60) also has an inlet (62) connected to the fuel source (44) and an outlet (64) connected through a cold start passageway (68) with each combustion chamber (30). A processing circuit (48) selectively activates the multipoint fuel injectors (42) as well as the cold start fuel injector (60). The processing circuit (48) determines the air/fuel mixture introduced by the cold start fuel injector (60) into each combustion chamber (30) during engine startup and then selectively activates the multipoint fuel injectors (42) to achieve a predetermined air/fuel mixture in each combustion chamber (30) during engine startup. The processing circuit (48) also variably retards the ignition of the combustion charge within at least one of the combustion chambers (30) to achieve faster heating of a catalytic converter. Furthermore, the cold start fuel injector (60) is optionally activated in a plurality of spaced sub-pulses (112) for each combustion charge provided to each combustion chamber (30).

摘要翻译： 本发明涉及一种用于与具有多个燃烧室（30）的类型的内燃机（20）一起使用的发动机启动燃料控制系统，流体连接到每个燃烧室（30）的进气通道（34）和 燃料源（44）。 该系统包括与每个燃烧室（30）相关联的多点燃料喷射器（42），其中多点燃料喷射器（42）具有连接到燃料源（44）的入口和与进气通道（34）流体连接的出口 ）邻近其相关联的燃烧室（30）。 冷启动燃料喷射器（60）还具有连接到燃料源（44）的入口（62）和通过冷启动通道（68）与每个燃烧室（30）连接的出口（64）。 处理电路（48）选择性地激活多点燃料喷射器（42）以及冷启动燃料喷射器（60）。 处理电路（48）在发动机启动期间将由冷启动燃料喷射器（60）引入的空气/燃料混合物确定到每个燃烧室（30）中，然后选择性地启动多点燃料喷射器（42）以实现预定的空气/燃料 在发动机启动期间在每个燃烧室（30）中的混合物。 处理回路（48）还可变地阻止至少一个燃烧室（30）内的燃烧装料点火，以实现催化转化器的更快加热。 此外，冷启动燃料喷射器（60）任选地对于设置到每个燃烧室（30）的每个燃料电荷以多个间隔的子脉冲（112）启动。