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    Fuel injection system
    1.
    发明公开
    Fuel injection system 有权
    燃油喷射系统

    公开(公告)号：EP1688613A2

    公开(公告)日：2006-08-09

    申请号：EP06110960.9

    申请日：1999-06-11

    申请人： VOLVO LASTVAGNAR AB

    发明人： Yudanov, Sergi

    IPC分类号： F02M61/20 ,  F02M47/02

    CPC分类号： F02M61/205 ,  F02M47/02 ,  F02M57/025 ,  F02M57/026 ,  F02M63/0029

    摘要： The present invention relates to a fuel injection system for an internal combustion engine with a fuel injector, said injector comprising an inlet port (2); a spill port (3); a pressure intensifier comprised of a piston (6) forming a working chamber (10) and a plunger (7) forming a compression chamber (12), wherein the working chamber (10) is adapted to be connected either to the inlet port (2) or to the spill port (3) according to the commands from an engine management system in order to enable the pressure intensifier (6, 7) to perform injections; a nozzle (14) with a needle (15), a locking chamber (17), a means (16) biasing the needle to close the nozzle and an outlet chamber (18) connected to the compression chamber (12); a non-return valve (19), the inlet of the non-return valve (19) being connected to the inlet port (2) and the outlet of the non-return valve (19) being connected to the compression chamber (12); a cut-off channel (20) connected to the nozzle locking chamber (17); a control channel (22); an additional control valve (23) installed between the control channel (22) and the spill port (3); a link channel (24) connecting the control channel (22) to the inlet port (2). The invention is characterized in that the flow areas of the link channel (24) and the additional control valve (23) are such that when the additional control valve (23) is open the pressure in the control channel (22) becomes less than the pressure upstream of the link channel (24); said plunger (7) being adapted so as to connect the cut-off channel (20) to the compression chamber (12) at an injection cut-off position of the plunger (7) and adapted to connect the cut-off channel (20) to the control channel (22) at other positions of the plunger (7). By means of the invention, an improved fuel injector having an increased range of electronic control of an injection curve shape, improved stability of fuel delivery and a simplified design is accomplished.

    摘要翻译： 用于内燃机的燃料喷射系统技术领域本发明涉及一种用于具有燃料喷射器的内燃机的燃料喷射系统，所述喷射器包括进气口（2）; 溢油口（3）; 包括形成工作室（10）的活塞（6）和形成压缩室（12）的柱塞（7）的增压器，其中工作室（10）适于连接到入口端口（2） ）或根据来自发动机管理系统的命令至溢出口（3），以便使增压器（6,7）能够执行注射; 具有针（15）的喷嘴（14），锁定室（17），偏压针以关闭喷嘴的装置（16）和连接至压缩室（12）的出口室（18）; （19），所述止回阀（19）的入口连接到所述入口端口（2）并且所述止回阀（19）的出口连接到所述压缩腔室（12），所述止回阀 ; 连接到所述喷嘴锁定室（17）的切断通道（20）; 一个控制信道（22）; 一个安装在控制通道（22）和溢流口（3）之间的附加控制阀（23）; 将控制通道（22）连接到入口端口（2）的连接通道（24）。 本发明的特征在于，连接通道（24）和附加控制阀（23）的流动面积使得当附加控制阀（23）打开时，控制通道（22）中的压力变得小于 在连接通道（24）的上游的压力; 所述柱塞（7）适于在所述柱塞（7）的注射切断位置处将所述切断通道（20）连接到所述压缩室（12）并且适于连接所述切断通道（20） ）在柱塞（7）的其他位置处连接到控制通道（22）。 借助于本发明，实现了具有增大的喷射曲线形状的电子控制范围，改进的燃料输送稳定性和简化的设计的改进的燃料喷射器。

    Fuel injection system
    3.
    发明公开
    Fuel injection system 有权
    燃油喷射系统

    公开(公告)号：EP1688613A3

    公开(公告)日：2006-10-11

    申请号：EP06110960.9

    申请日：1999-06-11

    申请人： VOLVO LASTVAGNAR AB

    发明人： Yudanov, Sergi

    IPC分类号： F02M61/20 ,  F02M47/02

    CPC分类号： F02M61/205 ,  F02M47/02 ,  F02M57/025 ,  F02M57/026 ,  F02M63/0029

    摘要： The present invention relates to a fuel injection system for an internal combustion engine with a fuel injector, said injector comprising an inlet port (2); a spill port (3); a pressure intensifier comprised of a piston (6) forming a working chamber (10) and a plunger (7) forming a compression chamber (12), wherein the working chamber (10) is adapted to be connected either to the inlet port (2) or to the spill port (3) according to the commands from an engine management system in order to enable the pressure intensifier (6, 7) to perform injections; a nozzle (14) with a needle (15), a locking chamber (17), a means (16) biasing the needle to close the nozzle and an outlet chamber (18) connected to the compression chamber (12); a non-return valve (19), the inlet of the non-return valve (19) being connected to the inlet port (2) and the outlet of the non-return valve (19) being connected to the compression chamber (12); a cut-off channel (20) connected to the nozzle locking chamber (17); a control channel (22).

    摘要翻译： 用于内燃机的燃料喷射系统技术领域本发明涉及一种用于具有燃料喷射器的内燃机的燃料喷射系统，所述喷射器包括进气口（2）; 溢油口（3）; 包括形成工作室（10）的活塞（6）和形成压缩室（12）的柱塞（7）的增压器，其中工作室（10）适于连接到入口端口（2） ）或根据来自发动机管理系统的命令至溢出口（3），以便使增压器（6,7）能够执行注射; 具有针（15）的喷嘴（14），锁定室（17），偏压针以关闭喷嘴的装置（16）和连接至压缩室（12）的出口室（18）; （19），所述止回阀（19）的入口连接到所述入口端口（2）并且所述止回阀（19）的出口连接到所述压缩腔室（12），所述止回阀 ; 连接到所述喷嘴锁定室（17）的切断通道（20）; 一个控制信道（22）。