| 摘要 |
An injection system for an internal combustion engine having a plurality of cylinders is known which has a hydraulic pump with a delivery outlet to which a delivery line common to the cylinders is connected, and a plurality of injection units each of which is associated with a different cylinder and, in normal drive operation, can be controlled pulsewise by connection with the delivery line. There is also known an exhaust-brake system having a plurality of decompression valves each of which is associated with a different cylinder and, in brake operation, can be controlled pulsewise outside the exhaust stroke, in particular at the end of the compression stroke, by alternate pressure action on and pressure relief of the hydraulic actuating element. The purpose is to create a system with which, at little expense and at favorable cost, the "injection" and "exhaust-brake" functions can be satisfied. This is achieved by a plurality of valve arrangements, each of which is associated with a different cylinder and in normal drive operation connects the injection unit and the in brake operation the hydraulic actuating element on the corresponding cylinder, with proper timing, to the delivery line.
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