| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately detect torque fluctuation of an internal combustion engine in a hybrid vehicle. <P>SOLUTION: A torque fluctuation detection device 1 of the internal combustion engine is provided with a current detection means 47 for detecting a current through a motor generator 21, a travelling resistance detection means 44, 45, 46 for detecting travelling resistances of the vehicle 100, a first torque estimation means 31 for estimating an engine torque of the internal combustion engine 11 based on the detected current, a first torsion angle calculation means 31 for calculating a torsion angle of a damper based on the estimated engine torque and detected travelling resistances, a second torsion angle calculation means 31 for calculating a torsion angle based on respective rotation angles of crankshaft 111 and an input shaft 231, and a correction value determination means 31 for determining a correction value of damper characteristics of the damper 24 based on the torsion angle calculated by the first torsion angle calculation means and the torsion angle calculated by the second torsion angle calculation means. <P>COPYRIGHT: (C)2010,JPO&INPIT |
