M INDEX DETERMINATION SYSTEMS AND METHODS FOR WIEBE FUNCTIONS

摘要

A parameter determination system includes first and second difference modules, a ratio module, and an M index module. The first difference module determines a first crankshaft angle of a combustion event of an engine, determines a second crankshaft angle of the combustion event of the engine, and determines a first difference between the first and second crankshaft angles. The second difference module determines a third crankshaft angle of the combustion event of the engine, determines a fourth crankshaft angle of the combustion event of the engine, and determines a second difference between the third and fourth crankshaft angles. The ratio module determines a ratio of the first difference to the second difference. The M index module determines an M index value for the Wiebe function based on the ratio and displays the M index value on a display.

主权项

1. A parameter determination system comprising:
a first difference module that determines a first crankshaft angle of a combustion event of an engine, that determines a second crankshaft angle of the combustion event of the engine, and that determines a first difference between the first and second crankshaft angles; a second difference module that determines a third crankshaft angle of the combustion event of the engine, that determines a fourth crankshaft angle of the combustion event of the engine, and that determines a second difference between the third and fourth crankshaft angles; a ratio module that determines a ratio of the first difference to the second difference; and an M index module that determines an M index value for the Wiebe function based on the ratio and that displays the M index value on a display.