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Engine Mapping: The development of any control system comes from knowledge of the plant, or system to be controlled. In the case of the automobile engine, this knowledge of the plant (the engine) comes primarily from a process called engine mapping.
For engine mapping, the engine is connected to a dynamometer and operated throughout its entire speed and load range. Measurements are made of the important engine variables while quantities, such as the air/fuel ratio and the spark control, are varied in a known and systematic manner.
Such engine mapping is done in engine test cells that have engine dynamometers and complex instrumentation that collects data under computer control.
| From this mapping, a mathematical model is developed that explains the influence of every measurable variable and parameter on engine performance.
The control system designer must select a control configuration, control variables, and control strategy that will satisfy all performance requirements (including stability) as computed from this model and that are within the other design limits such as cost, quality, and reliability. | | :: Recommended Reading / Videos :: | | | |
| :: Recommended material containing aditional info about Engine Mapping :: |
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