| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle engine control device improving degradation in control accuracy because output voltage of a constant voltage power circuit part in which electricity is fed from an on-vehicle battery to generate predetermined constant voltage output is fluctuated by fluctuation in internal temperature. SOLUTION: The constant voltage power circuit part 111 in which the electricity is fed from the battery 101 to generate constant voltage output supplies voltage Vcc to an analog sensor group 104, a multichannel A/D converter 114, and a microprocessor 110a or the like. Output of a temperature sensor 112b installed near the constant voltage power circuit part 111 is stored in a nonvolatile memory 120 as comparison temperature data T at an adjusted delivery time. Voltage fluctuation characteristic data by a temperature change of the constant voltage power circuit part 111 and a detection fluctuation characteristic data following the voltage fluctuation of the analog sensor group 104 are stored in advance to correct fluctuation in digital conversion value following fluctuation in temperature near the constant voltage power circuit part 111. COPYRIGHT: (C)2006,JPO&NCIPI
|
