Patent ID: 6338018
Filing Date: 2002-01-08
Classification: F02D

Abstract:
A method of commissioning an internal combustion engine controlled by an electronic engine control unit, the method comprising:mapping a selected engine operating parameter over a range of engine speeds and loads so as to obtain optimum values for said selected engine operating parameter for different speeds/load combinations, said mapping process involving the steps of: (a) defining a speed/load mapping table and generating a graphical display of a corresponding speed/load grid comprising a plurality of cells arranged in a grid, each cell corresponding to a particular speed/load combination in the speed/load mapping table, each unmapped cell in the grid being displayed in a first visually distinct manner and each mapped cell being displayed in a second visually distinct manner; (b) selecting an unmapped cell in said speed/load grid for mapping and displaying said selected unmapped cell in a fourth visually distinct manner; (c) driving the engine as close as possible to the selected speed/load combination; (d) displaying the current value of said selected engine operating parameter; (e) adjusting the value of said selected engine operating parameter to thereby obtain an optimum value for said engine operating parameter at said selected speed/load combination; (f) saving the optimum value at said selected speed/load combination in the speed/load mapping table; and, (g) repeating steps (b) to (f) until the selected engine operating parameter has been mapped for all desired cells in the speed/load grid.