| 摘要 |
The fuel injection system has one high-pressure fuel pump ( 10 ) with a pump work chamber ( 22 ) and one fuel injection valve ( 12 ), communicating with the pump work chamber, for each cylinder of the engine. The fuel injection valve ( 12 ) has a first injection valve member ( 28 ), by which at least a first injection opening ( 32 ) is controlled, and which is movable in an opening direction ( 29 ) counter to a closing force by the pressure generated in the pump work chamber ( 22 ). Inside the hollow first injection valve member ( 28 ), a second injection valve member ( 128 ) is guided displaceably, by which at least a second injection opening ( 132 ) is controlled, and which is movable by the pressure prevailing in the pressure chamber ( 40 ) in an opening direction ( 29 ) counter to a closing force; the second injection valve member ( 128 ) is acted upon at least indirectly by the pressure prevailing in a fuel-filled control chamber ( 50 ), which pressure is generated, as a function of operating parameters of the engine, by a feed pump ( 52 ) such that the second injection valve member ( 128 ) either remains in its closed position, or can open. |
