Document Type and Number:
Japanese Patent JP4251039
Kind Code:
B2
Abstract:
To correctly detect a crank angle under such a condition that an influence by a manufacture error of a rotor mounted on a crankshaft is eliminated, to thereby estimate a combustion state of an internal combustion engine correctly.
There are provided: a crank angle sensor 38 for detecting the crank angle and the rotor 39; a combustion state quantity acquisition means to acquire the quantity of combustion state (estimated illustrated torque Ti) showing the combustion state of each cylinder based on the crank angle; a deviation acquisition means to classify all the cylinders of the internal combustion engine into a plurality of cylinder groups according to the estimated illustrated torques Tiand to acquire the steady deviation ΔT generated between the estimated illustrated torques Ticorresponding to the respective cylinder groups; and a combustion state quantity correction means to correct the estimated illustrated torque Tibased on the deviation ΔT.
COPYRIGHT: (C)2005,JPO&NCIPI
Application Number:
JP2003295581A
Publication Date:
April 08, 2009
Filing Date:
August 19, 2003
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D45/00; G01M15/04; F02D41/22; F02P5/15; G01M15/00
Domestic Patent References:
Attorney, Agent or Firm:
Hideki Takahashi
Hidekazu Onishi
Mamoru Takada
Atsushi Hirayama
