公开(公告)号：US20070100534A1

公开(公告)日：2007-05-03

申请号：US11590850

申请日：2006-11-01

申请人： Machiko Katsumata

发明人： Machiko Katsumata

IPC分类号： G06F17/00

CPC分类号： F02D41/1497 ,  F02D35/023 ,  F02D35/024 ,  F02D35/026 ,  F02D2200/0402 ,  F02D2200/1004 ,  F02D2200/1006

摘要： The invention minimizes the man-hours required to develop a map that estimates the torque of an internal combustion engine. The method according to the invention includes making a torque estimation model that defines the relation between indicated torque and characteristic values that represent the flow of gas and the combustion state in an internal combustion engine; determining the value of a parameter that relates to a heat-generation rate (dQ/dθ), which is the rate of change in a heating value Q in a cylinder with respect to the crank angle θ, based on an operating condition of the engine; calculating the heat-generation rate under the desired operating condition; estimating the indicated torque of the internal combustion engine with the torque estimation model, using the heat-generation rate. The method according to the invention results in more accurate control over the operating state of an internal combustion engine.