| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst energization control device capable of achieving cost reduction by restraining the flow of a large current without impairing the early activation of a catalyst. <P>SOLUTION: The catalyst energization control device applied to a catalyst device (EHC) constituted carrying a catalyst on a base material includes a duty control means for performing duty control so that power supplied to the base material is target power when the base material has such a characteristic (NTC characteristic) that an own electric resistance value decreases accompanied by a rise of a temperature, and an power shortage computing means for computing a shortage S1 in the total supply power to the target total power in an power shortage period B1 until a catalyst temperature rises to a temperature at which a resistance value that can input target power is obtained after the start of energization to the base material. The catalyst energization control device carries out the replenishment control of performing duty control to supply power higher than the target power in a period (replenishment period B2) until the shortage S1 is replenished after the lapse of the power shortage period B1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
