| Popis: |
In this chapter, the engine control structure for spark ignition (SI) and compression ignition (CI) engines is examined. First, a general overview of engine control is given. A suitable architecture is presented which can be used to handle the demanding requirements on process control. By the use of hierarchization and modularization, the complex interaction of the various components can be tackled. For both the SI and the CI engine, a typical hardware setup is presented. Based on the two examples, the main control loops are introduced for both combustion concepts. The goals of the control tasks are outlined and exemplary sensitivities of the controlled values on the actuated values are shown. Specifically, the tasks within the air path, the ignition path, the combustion path, and the aftertreatment path are investigated. |
