| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the variation of the sensitivity of cylinder pressure sensors provided at a plurality of cylinders. SOLUTION: This calibrating device for the cylinder pressure sensor includes a means S103 for measuring cylinder pressure at each cylinder at predetermined two points of timing by means of the cylinder pressure sensors, a means S104 for calculating the differential pressure of the measured cylinder pressure at each cylinder, and a means S108 for calculating sensor sensitivity correction coefficients of the cylinder pressure sensors of the cylinders other than a predetermined reference cylinder on the basis of the differential pressure of the predetermined reference cylinder and the differential pressure of the cylinders other than the reference cylinder. Based on the cylinder pressure sensor of the reference cylinder, the sensor sensitivity correction coefficients of the cylinder pressure sensors of the cylinders other than the reference cylinder are calculated and the variation of the sensor sensitivity between and among the cylinders can be eliminated. COPYRIGHT: (C)2008,JPO&INPIT
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