公开(公告)号：US20160115877A1

公开(公告)日：2016-04-28

申请号：US14525297

申请日：2014-10-28

Applicant: GM Global Technology Operations LLC

Inventor： CHAO F. DANIELS ,  Xu Han

IPC: F02D35/02 ,  F02P9/00 ,  F02D37/02

CPC classification number: F02D35/028 ,  F02D35/023 ,  F02D35/025 ,  F02D37/02

Abstract: 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.

Abstract translation: 参数确定系统包括第一和第二差分模块，比率模块和M索引模块。 第一差模块确定发动机的燃烧事件的第一曲轴角度，确定发动机的燃烧事件的第二曲轴角度，并且确定第一和第二曲轴角度之间的第一差。 第二差分模块确定发动机的燃烧事件的第三曲轴角度，确定发动机的燃烧事件的第四曲轴角度，并确定第三和第四曲轴角度之间的第二差。 比率模块确定第一差异与第二差异的比率。 M索引模块根据比例确定Wiebe函数的M索引值，并在显示屏上显示M索引值。