公开(公告)号：EP0384882A3

公开(公告)日：1991-04-03

申请号：EP90630054.6

申请日：1990-02-23

申请人： AIL CORPORATION

发明人： Brisbon, Eric S. ,  DiCarlo, Jeffrey P. ,  Cavanaugh, John B. ,  Karlson, Ross S.

IPC分类号： F02M47/02 ,  F02M45/00

CPC分类号： F02M57/026 ,  F02M45/00 ,  F02M47/02 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466

摘要： Accumulator injector comprising a needle valve (30), an accumulator chamber and an amplifier chamber (64) in communication with the source of pressurized fuel, the end (74) of the valve (30) being subjected to the pressure in the amplifier chamber (64). An amplifier piston (70') is provided for boosting the pressure in in the amplifier chamber (64) and in the accumulator chamber. A duct (80') extends from a valve assembly (82) along side of and spaced from the amplifier cylinder (72) and communicates with the cylinder (72) by means of a smaller lower port (106) and a larger upper port (108). By restricting the rate of movement of the amplifier piston (70') upwardly, the pressure in the amplifier chamber (64) and hence in the accumulator chamber is relieved at a slower rate, hence changing the rate of opening of the needle valve (30) and the rate of fuel injection. The initial fuel flow from the end chamber (116) through the small port (106) produces a pilot injection. The injection rate is controlled by restricting the pressure decay in the amplifier chamber (64).

公开(公告)号：EP0384882A2

公开(公告)日：1990-08-29

申请号：EP90630054.6

申请日：1990-02-23

申请人： AIL CORPORATION

发明人： Brisbon, Eric S. ,  DiCarlo, Jeffrey P. ,  Cavanaugh, John B. ,  Karlson, Ross S.

IPC分类号： F02M47/02 ,  F02M45/00

CPC分类号： F02M57/026 ,  F02M45/00 ,  F02M47/02 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466

摘要： Accumulator injector comprising a needle valve (30), an accumulator chamber and an amplifier chamber (64) in communication with the source of pressurized fuel, the end (74) of the valve (30) being subjected to the pressure in the amplifier chamber (64). An amplifier piston (70') is provided for boosting the pressure in in the amplifier chamber (64) and in the accumulator chamber. A duct (80') extends from a valve assembly (82) along side of and spaced from the amplifier cylinder (72) and communicates with the cylinder (72) by means of a smaller lower port (106) and a larger upper port (108). By restricting the rate of movement of the amplifier piston (70') upwardly, the pressure in the amplifier chamber (64) and hence in the accumulator chamber is relieved at a slower rate, hence changing the rate of opening of the needle valve (30) and the rate of fuel injection. The initial fuel flow from the end chamber (116) through the small port (106) produces a pilot injection. The injection rate is controlled by restricting the pressure decay in the amplifier chamber (64).

摘要翻译： 蓄能器喷射器包括与加压燃料源连通的针阀（30），蓄压室和放大器室（64），阀（30）的端部（74）在放大器室（... 64）。 提供了放大器活塞（70'），用于升高放大器室（64）和蓄能器室中的压力。 管道（80'）从阀组件（82）沿着放大器气缸（72）的侧面和间隔延伸，并通过较小的下部端口（106）和较大的上部端口（106）与气缸（72）连通 108）。 通过向上限制放大器活塞（70'）的移动速度，放大器室64中的压力，因此在蓄能器室中的压力以较慢的速度释放，因此改变针阀（30）的打开速率 ）和燃油喷射速率。 从端室（116）通过小端口（106）的初始燃料流量产生引燃喷射。 通过限制放大器室（64）中的压力衰减来控制喷射速率。